YST-SW1500 NEW PRODUCT BULLETIN

S u b w o o f e r

YST-SW1500
The YST-SW1500 uses Yamahas Advanced YST as well as brand new technologies such as QD-Bass to deliver exceptionally crisp, clean, powerful bass all the way down to 16Hz. The YST-SW1500 The YST-SW1500 has an extremely efficient, high-power amplifier built in, and uses an extra-long stroke, drivers that provide outstanding power with low distortion. The YST-SW1500 also introduces a Dual-Bias system with a 100mm (4") diameter voice coil for the ultimate in power and performance.
Ultra-Powerful Bass Gives Movies and Music a New Dimension of Excitement

1/6 (C/R/T/K)

1,000 Watts of Bass Power with Extreme Accuracy, Plus a Number of Advanced Control Functions.
QD-Bass (Quatre Dispersion Bass) technology Advanced YST (Yamaha Active Servo Technology) Remote control unit Extremely efficient amplifier with 1,000 W power and highly efficient power supply technology 30cm (12) extra-long stroke driver with Dual-Bias System 16Hz ultra low frequency reproduction BASS (Bass Action Selection System) LFE (Low Frequency Effect) input HPF (High Pass Filter) output Low (1W) standby power consumption
Subwoofers for the Digital Era Now that audio and video have largely moved to digital formats, the demands on speaker systems are greater than ever. The latest home theater systems, in particular, not only use high-performance DVD players, but also exploit the merits of advanced sound processing formats like Dolby Digital and DTS Digital Surround. Full audio enjoyment of these digital sources requires deep, clear bass response. This is especially true with 5.1 (6.1)channel sound, because the sixth channel is dedicated to the bass frequencies. That means you not only need a subwoofer, but a subwoofer capable of handling extremely low frequencies and high power levels, as well as accurately reproducing the high quality digital sound.

Subwoofer

Black finish available in some areas

2/6 (C/R/T/K)

QD-Bass Technology QD-Bass (Quatre Dispersion Bass) technology uses down-firing drivers with square, pyramid-shaped reflective plates to radiate the sound efficiently in four horizontal directions. The reflective plates (not used in competitors down-firing subwoofers) negate any effects caused by the floor surface and reduce resonance between sound waves reflected from the floor and the unit. Also, most other systems use circular cones, but by radiating in four directions to avoid the legs of the cabinet, QD-Bass reduces turbulence caused by reflection from the legs. Changing the height of the square pyramid varies the acoustic load,

QD-Bass Technology

permitting relatively simple high-cut adjustment and improved bandpass properties. The QD-Bass system provides extraordinary power and smooth frequency response from an extremely compact unit. It also allows greater freedom of placement, since the sound radiates with equal effectiveness in all directions. Advanced YST Yamahas patented Advanced Active Servo Technology (Advanced YST) generates incredible bass from small speaker enclosures. Advanced YST is the ideal method of combining amplifiers and speakers for maximum performance. This systems advanced negative impedance converters intelligently adjust the negative impedance generation as the speaker moves, creating a hard, rigid cone that prevents deep resonant waves from leaking out of the speaker cone. This means the full power of the waves is forced out through the air port, resulting in clear, powerful bass.
Advanced YST Brings You Super Bass.
The effectiveness of Advanced YST (Yamaha Active Servo Technology) is based upon two principles: the Helmholtz Resonator and negative-impedance drive. Active Servo Processing speakers reproduce the bass frequencies through an air woofer, which is a port or opening in the speaker cabinet. This port is used instead of, and performs the functions of, a conventional woofer. Low amplitude signals inside the cabinet can, due to the Helmholtz Resonance principle, be output from this port as high amplitude waves if the design is such that the size of the port and the volume of the cabinet are in a certain proportion. In addition, the wave amplitudes inside the cabinet must be precise and of sufficient power, in order to overcome the load presented by the air within the cabinet. This is accomplished by employing an amplifier that is capable of supplying special signals. If the electrical resistance of the voice coil could be reduced to zero, the movement of the speaker unit would become linear with respect to signal voltage. To achieve this, a special negativeimpedance output drive amplifier is used, so the impedances cancel out and become zero. By employing negative-impedance drive circuits, the amplifier is able to generate precise, low-amplitude low frequency waves with superior damping characteristics. These waves are then radiated from the cabinet opening as high amplitude signals. This amplifier/speaker combination is capable of reproducing an extremely wide range of frequencies with excellent sound quality and low distortion. The Advanced YST takes this concept a stop further by adopting Advanced Negative Impedance Converter (ANIC) circuits. These circuits allow the converter to dynamically vary in order to select the optimum values for speaker impedance variation. With these new circuits, Advanced Yamaha Active Servo Technology provides more stable performance and higher sound pressure levels than the former system, resulting in more natural and energetic bass reproduction.

High-Amplitude Bass Sound Port
Air Woofer (Helmholtz Resonator) Cabinet
Advanced NegativeImpedance Converter
Active Servo Processing Amplifier

Signals

Signals of Low Amplitude

3/6 (C/R/T/K)

25mm Real Wood Cabinet
The beautifully finished cabinet uses ultra-thick (25mm; 1") real wood for minimum resonance.

Advanced YST

A unique system in which the speaker and amplifier work together to cancel out impedance so the speaker unit has a perfectly linear motion.
High-Efficiency Power Amplifier and Power Supply The YST-SW1500 delivers high power outputs at deep bass levels, with excellent stability and low power consumption, even with their compact cabinets. This is made possible by highly efficient power amplifier technology and, in the YST-SW1500, a new power supply. The power amplifier achieves superior conversion efficiency by supplying maximum power (minimizing power loss) from the power transistors according to the output level. It delivers stable power output with high efficiency while minimizing power consumption and heat production. It does not require an output filter coil, resulting in extremely low noise and distortion. High speed transient response is also excellent. The YST-SW1500 also uses a new power supply that features superior load characteristics, minimal noise, higher efficiency and greater stability. Switching power supplies, commonly used in audio and other consumer products, are small and efficient, but suffer from noise problems, requiring additional components to solve. This

High Power Amplifier

The YST-SW1500 amplifier is extremely efficient and features an entirely new type of power supply with superior load characteristics, minimal noise, higher efficiency and greater stability.
power supply, however, holds the voltage and current levels to zero while the device turns on and off. This reduces noise to 1/30 of conventional switching power supplies. Power loss during switching is also reduced, enabling an incredibly high power conversion efficiency. Other advantages of this power supply include superb stability against power load fluctuations, large capacity, low impedance and silent operation. Extra-Long Stroke, Pure Spruce Dual-Bias Drivers These new drivers provide outstanding power with low distortion and are superior to conventional drivers for a number of reasons. Due to the use of a vertically aligned, dual magnetic circuit structure with

Extra-Long Stroke Drivers
Extra-long stroke, pure spruce multi-range drivers provide outstanding power with low distortion.
QD-Bass (Quatre Dispersion Bass) technology uses downfiring drivers with square, pyramid-shaped reflective plates to radiate the sound efficiently in four horizontal directions.

100mm diameter voice

YST-SW1500 Extra-Long Stroke Driver

4/6 (C/R/T/K)

coils, they are able to handle extremely high input power in a compact unit, with low radial distortion. Additionally, the vertically symmetrical gap magnetic flux density distribution reduces second harmonic (asymmetrical) distortion. Double spider construction also aids in handling high bass inputs without cone deformation. And the strong diecast frame firmly anchors the entire body including the magnetic circuit, guaranteeing a structure that will not fail under powerful forces.
Extra-Long Stroke Driver Construction
High-Strength 30cm (12") Spruce Cone Dust Cap Long Excursion Surround
optimum frequency response in each case. Ultra-Thick Real Wood Cabinet
Three-Way Mitered Construction

Baffle Board 45

Ultra-thick (25mm) real wood cabinet for minimum resonance. The beautiful wood finish is a handsome addition to any room.
Three-Way Mitered Construction Yamaha speakers have employed 45 mitered-joint construction at the cabinet corners and baffle/body joints for many years. On the YST-

Side Board

Conventional Mortised Construction
Baffle Board Conventional Mortising
SW1500, mitered construction is also used for the back panel, improving the tightness of the joints so that the entire cabinet behaves as a single rigid body. This reduces unwanted
High-Linearity Suspension with Double Spiders Dual-Bias Magnet System
vibration and helps realize the three key elements of ideal
Top Plate 100mm (3/8") Voice Coil Heavy-Duty Aluminum Diecast Frame Yoke Ferrite Magnets
home theater sound. Remote Control Unit This small, handy unit lets you control all the YST-SW1500 functions, including volume, high cut filter, BASS, phase and standby mode. It also allows you to memorize three groups of settings for quick recall.

Magnetic Density

1.5 Times
Conventional Magnet System Dual-Bias Magnet System
LFE Input and HPF Output The YST-SW1500 offers an LFE Input that causes the signal to bypass the low pass filter, providing more faithful reproduction without phase distortion. This is ideal for listening to movies. The HPF Output cuts the unnecessary low range signal component to the main speakers and ensures low intermodulation distortion, making it preferable for music listening. BASS The BASS (Bass Action Selection System) function lets you switch between Movie and Music modes, providing the

LFE (Low Frequency Effect) input terminals (INPUT 3) 2-way binding-post speaker terminals (banana-plug compatible) (INPUT 1)
YST-SW1500 Versatile Connection
I/O port (3.5mm stereo mini jacks) HPF (High Pass Filter) output terminals Line input terminals (L/R or mono) (INPUT 2)

5/6 (C/R/T/K)

YST-SW1500 Notable Features
Advanced YST (Yamaha Active Servo Technology) QD-Bass (Quatre Dispersion Bass) technology High 1,000 W output power Extremely efficient amplifier and highly efficient power supply 30cm extra-long stroke driver with Dual-Bias System 16Hz ultra low frequency reproduction BASS (Bass Action Selection System) LFE (Low Frequency Effect) input for more faithful reproduction without phase distortion HPF (High Pass Filter, 80 Hz/100 Hz) output for music listening Remote control unit 2-way binding-post speaker terminals (banana-plug compatible) Magnetic shielding Auto Standby with sensitivity selector (HIGH, LOW and OFF) Phase control (normal or reverse) Two input connections: speaker level or line level Ultra-thick (25cm) real wood cabinet with Yamaha Three-Way Mitered Construction for reduced additional resonance Low (1W) standby power consumption
YST-SW1500 Main Specifications
Output Power Input Terminals 1,000 W (5 ohms) INPUT 1 (speaker terminals), INPUT 2 (pin jack), INPUT 2 (pin jack) and I/O PORT (3.5mm mini jack) (SP) / INPUT 3 (PJ) (SP) / INPUT 3 (PJ) 1 V (50 Hz, 1 kW/5 ohms, L+R) 95 mV (50 Hz, 1 kW/5 ohms, L+R) 2.2 k-ohms 12 k-ohms HPF (High Pass Filter) Out (pin jack) and I/O PORT (3.5mm mini jack) 16160 Hz 40140 Hz (continuously variable) 30cm (12) extra-long stroke driver with Dual-Bias System 1W 420 x 511 x 448 mm 16-9/16 x 20-1/8 x 17-5/kg; 63.9 lbs.
Input Sensitivity INPUT 1 INPUT 2 Input Impedance INPUT 1 INPUT 2 Output Terminals
Frequency Response High Cut Filter Driver Standby Power Consumption Dimensions (W x H x D) Weight
For details please contact:
Dolby Digital and Double D are trademarks of Dolby Laboratories Corporation. DTS, ES and DTS Digital Surround are trademarks of Digital Theater Systems, Inc. Product designs and specifications are subject to change without notice.

Visit us at our website: http://www.yamaha.co.jp/

YAMAHA CORPORATION

P.O. Box 1, Hamamatsu, Japan

APB635CR-YSTSW1500@X29

6/6 (C/R/T/K)

YST -SW 500 1

Subwoofer System

OWNERS MANUAL

1-YST-SW1500(UB)PRE-f 1 02.9.2, 6:45 PM
IMPORTANT SAFETY INSTRUCTIONS

CAUTION

RISK OF ELECTRIC SHOCK DO NOT OPEN
Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Clean only with dry cloth. Do not block any ventilation openings. Install in accordance with the manufacturers instructions. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. pinched particularly at plugs, convenience receptacles, and the point where they exit from the apparatus.
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.
Explanation of Graphical Symbols
The lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert you to the presence of uninsulated dangerous voltage within the products enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point within an equilateral triangle is intended to alert you to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.
10 Protect the power cord from being walked on or
11 Only use attachments/accessories specified by the
WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

manufacturer.

12 Use only with the cart, stand, tripod,
bracket, or table specified by the manufacturer, or sold with the apparatus. When a cart is used, use caution when moving the cart/ apparatus combination to avoid injury from tip-over.
IMPORTANT Please record the serial number of this unit in the space below. MODEL: Serial No.: The serial number is located on the rear of this unit. Retain this Owners Manual in a safe place for future reference.
13 Unplug this apparatus during lightning storms or when
unused for long periods of time.
14 Refer all servicing to qualified service personnel.
Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
1-YST-SW1500(CA)PRE-c 2 02.9.4, 9:36 PM
FCC INFORMATION (for US customers)
1. IMPORTANT NOTICE : DO NOT MODIFY THIS UNIT! This product, when installed as indicated in the instructions contained in this manual, meets FCC requirements. Modifications not expressly approved by Yamaha may void your authority, granted by the FCC, to use the product. IMPORTANT : When connecting this product to accessories and/or another product use only high quality shielded cables. Cable/s supplied with this product MUST be used. Follow all installation instructions. Failure to follow instructions could void your FCC authorization to use this product in the USA. NOTE : This product has been tested and found to comply with the requirements listed in FCC Regulations, Part 15 for Class B digital devices. Compliance with these requirements provides a reasonable level of assurance that your use of this product in a residential environment will not result in harmful interference with other electronic devices. This equipment generates/uses radio frequencies and, if not installed and used according to the instructions found in the users manual, may cause interference harmful to the operation of other electronic devices. Compliance with FCC regulations does not guarantee that interference will not occur in all installations. If this product is found to be the source of interference, which can be determined by turning the unit OFF and ON, please try to eliminate the problem by using one of the following measures: Relocate either this product or the device that is being affected by the interference. Utilize power outlets that are on different branch (circuit breaker or fuse) circuits or install AC line filter/s. In the case of radio or TV interference, relocate/reorient the antenna. If the antenna lead-in is 300 ohm ribbon lead, change the lead-in to coaxial type cable. If these corrective measures do not produce satisfactory results, please contact the local retailer authorized to distribute this type of product. If you can not locate the appropriate retailer, please contact Yamaha Electronics Corp., U.S.A. 6660 Orangethorpe Ave, Buena Park, CA 90620. The above statements apply ONLY to those products distributed by Yamaha Corporation of America or its subsidiaries.

We Want You Listening For A Lifetime
YAMAHA and the Electronic Industries Associations Consumer Electronics Group want you to get the most out of your equipment by playing it at a safe level. One that lets the sound come through loud and clear without annoying blaring or distortion and, most importantly, without affecting your sensitive hearing. Since hearing damage from loud sounds is often undetectable until it is too late, YAMAHA and the Electronic Industries Associations Consumer Electronics Group recommend you to avoid prolonged exposure from excessive volume levels.
1-YST-SW1500(UB)PRE-f 3 02.9.2, 6:46 PM

CHECKING THE ACCESSORIES

Check your package to make sure it contains the following items. G Remote control G Batteries (size AA, UM-3, R6) G Grounding cable
G Power cable (U.S.A., Canada, Europe and Korean models only)
(U.S.A. and Canada models)
(Europe and Korean models)

For U.K. customers

If the socket outlets in the home are not suitable for the plug supplied with this appliance, it should be cut off and an appropriate 3 pin plug fitted. For details, refer to the instructions described below. Note: The plug severed from the mains lead must be destroyed, as a plug with bared flexible cord is hazardous if engaged in a live socket outlet.
SPECIAL INSTRUCTIONS FOR U.K. MODEL
IMPORTANT: THE WIRES IN MAINS LEAD ARE COLOURED IN ACCORDANCE WITH THE FOLLOWING CODE: Blue: NEUTRAL Brown: LIVE As the colours of the wires in the mains lead of this apparatus may not correspond with the coloured markings identifying the terminals in your plug, proceed as follows: The wire which is coloured BLUE must be connected to the terminal which is marked with the letter N or coloured BLACK. The wire which is coloured BROWN must be connected to the terminal which is marked with the letter L or coloured RED. Making sure that neither core is connected to the earth terminal of the three pin plug.

1-SW1500_UB.p65 4

2003.02.20, 11:58
Thank you for selecting this YAMAHA Subwoofer System.

English

CAUTION: Read this before operating your unit.
Please read the following operating precautions before use. YAMAHA will not be held responsible for any damage and/or injury caused by not following the cautions below.

To assure the finest performance, please read this manual carefully. Keep it in a safe place for future reference. Install this unit in a cool, dry, clean place away from windows, heat sources, sources of excessive vibration, dust, moisture and cold. Avoid sources of humming (transformers, motors). To prevent fire or electrical shock, do not expose this unit to rain or water. Never open the cabinet. If something drops into the set, contact your dealer. The voltage to be used must be the same as that specified on the rear panel. Using this unit with a higher voltage than specified is dangerous and may cause a fire and/or electric shock. To reduce the risk or fire or electric shock, do not expose this unit to rain or moisture. Do not use force on switches, controls or connection wires. When moving the unit, first disconnect the power plug and the wires connected to other equipment. Never pull the wires themselves. When not planning to use this unit for a long period (i.e. vacation, etc.), disconnect the AC power plug from the wall outlet. To prevent lightning damage, disconnect the AC power plug when there is an electric storm. Since this unit has a built-in power amplifier, heat will radiate from the rear panel. Place the unit apart from the walls, allowing enough spaces above, behind and on both sides of the unit to prevent fire or damage. Furthermore, do not position with the rear panel facing down on the floor or other surfaces. Be sure to allow spaces of at least 20 cm above, behind and on both sides of the unit. Do not cover the rear panel of this unit with a newspaper, a tablecloth, a curtain, etc. in order not to obstruct heat radiation. If the temperature inside the unit rises, it may cause fire, damage to the unit and/or personal injury. Do not place small metallic objects on this unit. Otherwise, the object may fall, possibly causing an injury. Do not place the following objects on this unit: Glass, china, etc. If glass etc. falls by vibrations and breaks, it may cause personal injury. A burning candle etc. If the candle falls by vibrations, it may cause fire and personal injury. A vessel with water in it If the vessel falls by vibrations and water spills, it may cause damage to the unit, and/or you may get an electric shock. Do not place this unit where foreign objects such as water drips might fall. It might cause a fire, damage to this unit, and/or personal injury. Never place a fragile object near the YST port of this unit. If the object falls or drops by the air pressure, it may cause damage to the unit and/or personal injury.

Never put a hand or a foreign object into the YST port located on the front of this unit. When moving this unit, do not hold the port as it might cause personal injury and/or damage to this unit. Never open the cabinet. It might cause an electric shock since this unit uses a high voltage. It might also cause personal injury and/or damage to this unit. When using a humidifier, be sure to avoid condensation inside this unit by allowing enough spaces around this unit or avoiding excess humidification. Condensation might cause a fire, damage to this unit, and/or electric shock. Super-bass frequencies reproduced by this unit may cause a turntable to generate a howling sound. In such a case, move this unit away from the turntable. This unit may be damaged if certain sounds are continuously outputted at high volume level. For example, if 20 Hz50 Hz sine waves from a test disc, bass sounds from electronic instruments, etc. are continuously outputted, or when the stylus of a turntable touches the surface of a disc, reduce the volume level to prevent this unit from being damaged. If you hear distorted noise (i.e., unnatural, intermittent rapping or hammering sounds) coming from this unit, reduce the volume level. Extremely loud playing of a movie soundtracks low frequency, bass-heavy sounds or similarly loud popular music passages can damage this speaker system. Vibration generated by super-bass frequencies may distort images on a TV. In such a case, move this unit away from the TV set. Do not attempt to clean this unit with chemical solvents as this might damage the finish. Use a clean, dry cloth. Be sure to read the TROUBLESHOOTING section regarding common operating errors before concluding that the unit is faulty. Secure placement or installation is the owners responsibility. YAMAHA shall not be liable for any accident caused by improper placement or installation of speakers.
Standby mode When this unit is turned off by pressing the STANDBY/ON button on the front panel, this unit consumes a small amount of power. This state is called the standby mode. This units power supply is completely cut off from the AC line only when the POWER switch is set in the OFF position or the AC power cable is disconnected. This unit features a magnetically shielded design, but there is still a chance that placing it too close to a TV set might impair picture color. Should this happen, move this unit away from the TV set. IFOR CANADIAN CUSTOMERS To prevent electric shock, match wide blade of plug to wide slot and fully insert. This Class B digital apparatus complies with Canadian ICES-003.

2-SW1500(UB) (02.9.2)a

02.9.2, 6:46 PM

CONTENTS

IMPORTANT SAFETY INSTRUCTIONS... II CHECKING THE ACCESSORIES.. IV CAUTION.. 1 FEATURES.. 2 PLACEMENT.. 3 CONNECTIONS.. 4 Connecting to line output (pin jack) terminals of the amplifier.. 4 Connecting to speaker output terminals of the amplifier.. 6 Connecting to H.P.F. OUTPUT terminals... 8 Ground connection. 10 Connecting the AC power cable. 11 AUTOMATIC POWER-SWITCHING FUNCTION.. 14 ADJUSTING THE SUBWOOFER BEFORE USE.. 15 Storing preset data of the VOLUME control etc.. 16 Frequency characteristics.. 17 ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY.. 18 TROUBLESHOOTING.. 19 SPECIFICATIONS. Back cover NOTES ABOUT THE REMOTE CONTROL.. 11 CONTROLS AND THEIR FUNCTIONS.. 12

FEATURES

This subwoofer system employs Advanced YAMAHA Active Servo Technology which YAMAHA has developed for reproducing higher quality super-bass sound. (Refer to page 18 for details on Advanced YAMAHA Active Servo Technology.) This super-bass sound adds a more realistic, theater-inthe-home effect to your stereo system. This subwoofer can be easily added to your existing audio system by connecting to either the speaker terminals or the line output (pin jack) terminals of the amplifier. For the effective use of the subwoofer, the subwoofers super-bass sound should be matched to the sounds of your main speakers. You can create the best sound quality for various listening conditions by using the HIGH CUT control and the PHASE button. You can make setting changes and adjustments for the subwoofer by using the remote control without moving from your listening position. The Automatic power-switching function saves you the trouble of pressing the STANDBY/ON button to turn the power on and off. You can select bass effect suitable for the source by using the B.A.S.S. button. The use of the H.P.F. OUTPUT terminals for connecting with the amplifier is effective for improving sound quality of your speaker system. This connection prevents sound output from the main speakers from muddying by filtering out low frequencies of input signals to be sent to the main speakers which are not suitable for reproducing low frequencies.

QD-Bass Technology

QD-Bass (Quatre Dispersion Bass) technology uses square, pyramid-shaped reflective plates to radiate the sound in four horizontal directions. E-2

PLACEMENT

: subwoofer,

: main speaker)

One subwoofer will have a good effect on your audio system, however, the use of two subwoofers is recommended to obtain more effect. If using one subwoofer, it is recommended to place it on the outside of either the right or the left main speaker. (See fig.) If using two subwoofers, it is recommended to place them on the outside of each main speaker. (See fig.) The placement shown in fig. is also possible, however, if the subwoofer system is placed directly facing the wall, the bass effect may die because the sound from it and the sound reflected by the wall may cancel out each other. To prevent this from happening, face the subwoofer system at an angle as in fig. or. Note There may be a case that you cannot obtain enough superbass sounds from the subwoofer when listening in the center of the room. This is because standing waves have been developed between two parallel walls and they cancel the bass sounds. In such a case, face the subwoofer obliquely to the wall. It also may be necessary to break up the parallel surfaces by placing bookshelves etc. along the walls.

2-SW1500_UB.p65

2003.02.20, 11:59

CONNECTIONS

Caution: Plug in the subwoofer and other audio/video components after all connections are completed.
All connections must be correct, that is to say L (left) to L, R (right) to R, + to + and to. Also refer to the owners manual for each of your components. The subwoofer can be connected to either the line output (pin jack) terminals or the speaker output terminals of the amplifier. Choose one of the ways shown in this section that is more suitable for your audio system. Also, refer to the owners manual of your component to be connected to the subwoofer. Basically, connect the subwoofer to the line output (pin jack) terminal(s) of the amplifier. (Refer to pages 4 and 5 for details.) If your amplifier does not have any line output terminal, connect the subwoofer to the speaker output terminals of the amplifier. (Refer to pages 6 and 7 for details.)
Connecting to line output (pin jack) terminals of the amplifier
To connect with a YAMAHA DSP amplifier (or AV receiver), connect the SUBWOOFER (or LOW PASS etc.) terminal on the rear of the DSP amplifier (or AV receiver) to the L/MONO INPUT2 terminal of the subwoofer. Connect the main speakers to the speaker output terminals of the amplifier. When connecting the subwoofer to the SPLIT SUBWOOFER terminals on the rear of the DSP amplifier, be sure to connect the L/MONO INPUT2 terminal to the L side and the R INPUT2 terminal to the R side of the SPLIT SUBWOOFER terminals.

Using one subwoofer

Right main speaker Left main speaker
Mono pin cable (not included) Subwoofer
REMOTE AUTO STANDBY H.P.F.OUTPUT LFE
OUTPUT INPUT HIGH LOW OFF 80Hz 100Hz

H.P.F.OUTPUT

NORMAL

OUTPUT

TO SPEAKERS

INPUT 3

INPUT 2

FROM AMPLIFIER

INPUT 1

80Hz 100Hz

POWER ON
Audio pin cable (not included)

SPLIT SUBWOOFER

Amplifier

SUBWOOFER (LOW PASS)

Using two subwoofers

OUTPUT H.P.F.OUTPUT

Right subwoofer

Left subwoofer

OUTPUT REMOTE AUTO STANDBY H.P.F.OUTPUT LFE

OUTPUT INPUT

80Hz 100Hz OUTPUT INPUT

POWER ON POWER ON OFF

AC IN AC IN
Connecting to the LFE (INPUT3) terminal(s)
If your amplifier can cut off high frequencies from the signals for sending to the subwoofer, connect the amplifier to the subwoofers LFE (INPUT3) terminal(s). This will bring you higher sound quality because the signal routing in the subwoofer is shortened bypassing the built-in HIGH CUT circuit.
Notes Some amplifiers have line output terminals labelled PRE OUT. When you connect the subwoofer to the PRE OUT terminals of the amplifier, make sure that the amplifier has at least two sets of PRE OUT terminals. If the amplifier has only one set of PRE OUT terminals, do not connect the subwoofer to the PRE OUT terminals. Instead, connect the subwoofer to the speaker output terminals of the amplifier. (Refer to pages 6 and 7.)
When connecting to a monaural line output terminal of the amplifier, connect the L/MONO INPUT2 terminal. When connecting to line output terminals of the amplifier, other speakers should not be connected to the OUTPUT terminals on the rear panel of the subwoofer. If connected, they will not produce sound.
Mono pin cables (not included)
Connecting to speaker output terminals of the amplifier
If your amplifier has only one set of main speaker output terminals

Connect the speaker output terminals of the amplifier to the INPUT1 terminals of the subwoofer, and connect the OUTPUT terminals of the subwoofer to the main speakers. Right main speaker Left main speaker

Subwoofer

POWER ON OFF

Speaker output terminals

If your amplifier has two sets of speaker output terminals
Right main speaker Subwoofer

Left main speaker

(Both A and B speaker outputs must be ON.)
Connecting to the INPUT1/OUTPUT terminals of the subwoofer
For connections, keep the speaker cables as short as possible. Do not bundle or roll up the excess part of the cables. If the connections are faulty, no sound will be heard from the subwoofer or the speakers, or both of them. Make sure that the + and polarity markings of the speaker cables are observed and set correctly. If these cables are reversed, the sound will be unnatural and lack bass. Caution Do not let the bare speaker wires touch each other as this could damage the subwoofer or the amplifier, or both of them.

How to Connect:

Red: positive (+) Black: negative ()
<U.S.A., Canada, Australia and Korean models only>
Banana Plug connections are also possible.
1 Loosen the knob. 2 Insert the bare wire. [Remove approx. 10 mm (3/8) insulation from the speaker wires.] 3 Tighten the knob and secure the wire.
1Tighten the terminal knob. 2Simply insert the Banana Plug connector into the terminal.
Connecting to H.P.F. OUTPUT terminals
The use of the H.P.F. OUTPUT terminals for connections with the amplifier will improve sound quality of your speaker system. The H.P.F. (High-Pass Filter) OUTPUT terminals of the subwoofer cut off frequencies below the selected frequency point from the input signals, and output high frequencies only. By connecting this terminal with the MAIN IN terminals of the amplifier, the main speakers reproduce high frequencies only. This will make the whole sound quality clear by preventing sound muddying between the main speakers and the subwoofer. * This connection can be made if your amplifier has PRE OUT and MAIN IN terminals or you are using separate amplifiers (pre-amplifier and main amplifier).

Notes There should be no large obstacles between the remote control and the main unit. If the remote control sensor is directly illuminated by strong lighting (especially an inverter type of fluorescent lamp etc.), it might cause the remote control not to work correctly. In this case, reposition the main unit to avoid direct lighting.
CONTROLS AND THEIR FUNCTIONS

Front panel

SUBWOOFER SYSTEM YST-SW1500
PRESET 2 MUSIC/MOVIE STANDBY/ON B.A.S.S. PHASE VOLUME HIGH CUT

40Hz 14Hz 0 10

PRESET 2
MUSIC/MOVIE STANDBY/ON B.A.S.S.

3 VOLUME

HIGH CUT

Rear panel

REMOTE AUTO STANDBY H.P.F.OUTPUT

q w e r

Remote control
STANDBY/ON button Press this button to turn on the power. Press again to set the subwoofer in the standby mode. * This button can be used only when the POWER (A) switch is set in the ON position. Standby mode The subwoofer is still using a small amount of power in this mode.
B.A.S.S. switch MUSIC/MOVIE button By pressing this switch to select the MOVIE mode, the bass sound in video software is faithfully reproduced. By pressing this switch to select the MUSIC mode, the bass sound in audio software is well reproduced. HIGH CUT control HIGH CUT UP/DOWN buttons Select the upper limit of the frequencies to be reproduced by the subwoofer. To adjust the control on the front panel, put a coin, etc. in the groove on the control and turn it.

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VOLUME control VOLUME UP/DOWN buttons Adjust the volume level. Turn the control clockwise or press the UP button to increase the volume. Turn the control counterclockwise or press the DOWN button to decrease the volume. To adjust the control on the front panel, put a coin, etc. in the groove on the control and turn it. Remote control sensor Receives signals from the remote control. Power indicator (LED) Lights up in green while the subwoofer is turned on. Lights up in red when the subwoofer is turned into the standby mode by the automatic power-switching function. MUSIC/MOVIE indicator (LED) Lights up in red when the MUSIC mode is selected, and in green when the MOVIE mode is selected. PHASE indicator (LED) Lights up in red when the PHASE button (J) is set in the regular mode, and in green when it is set in the reverse mode. PRESET 1/2/3 indicators (LED) Show which PRESET number (1, 2 or 3) is selected. (If the subwoofer is turned into the standby mode when one of these indicators are illuminated, no indicator will light up next time the subwoofer is turned on.) AC IN <U.S.A., Canada, Europe and Korean models only> Plug the included power cable into this socket. Never connect a power cable other than the included one to this socket. Also, never connect the included power cable to another unit. POWER switch Normally, set this switch to the ON position to use the subwoofer. In this state, you can turn on the subwoofer or turn the subwoofer into the standby mode by pressing the STANDBY/ON (1) button. Set this switch to the OFF position to completely cut off the subwoofers power supply from the AC line. REMOTE terminals These terminals are used for custom installation system. When the subwoofer is connected to the components for custom installation system, you can operate the subwoofer with the system remote control.

AUTO STANDBY (HIGH/LOW/OFF) switch This switch is originally set to the OFF position. By setting this switch to the HIGH or LOW position, the subwoofers automatic power-switching function operates as described on page 14. If you do not need this function, leave this switch in the OFF position. GND terminal Connecting this terminal to ground (GND) terminal of the receiver/amplifier can reduce a humming noise. (See page 10.) H.P.F. (High Pass Filter) OUTPUT switch Selects the upper limit of the frequencies to be cut off from the signals outputted at the H.P.F. OUTPUT terminals. Use this switch only when the H.P.F. OUTPUT terminals are used for connecting with the amplifier. (See page 8 for details) H.P.F. OUTPUT terminals These terminals cut off frequencies below the frequency point selected by the H.P.F. OUTPUT switch from the input signals and output higher frequencies.
INPUT3 (LFE) terminals The HIGH CUT control (3) has no effect on the signals inputted to these terminals. (See page 5 for details) INPUT2 terminals Used to input line level signals from the amplifier. (Refer to CONNECTIONS for details.) OUTPUT (TO SPEAKERS) terminals Can be used for connecting to the main speakers. Signals are sent directly from the amplifier to the main speakers by way of these terminals. (Refer to CONNECTIONS for details.) INPUT1 (FROM AMPLIFIER) terminals Used to connect the subwoofer with the speaker terminals of the amplifier. (Refer to CONNECTIONS for details.) PHASE button Normally press this button to select the reverse mode. However, according to your speaker systems or the listening condition, there may be a case when better sound quality is obtained by selecting the regular mode. Select the better mode by monitoring the sound. In the reverse mode, the PHASE indicator on the front panel lights up in green, and in the regular mode, it lights up in red. MEMORY button/PRESET buttons Used to store and recall the data for the B.A.S.S. [MUSIC/MOVIE] (2), the VOLUME [VOLUME UP/ DOWN] (4), the HIGH CUT [HIGH CUT UP/DOWN] (3) and the PHASE (J) adjustments. (See page 16.)
AUTOMATIC POWER-SWITCHING FUNCTION
If the source being played is stopped and the input signal is cut off for 7 to 8 minutes, the subwoofer automatically switches to the standby mode. (When the subwoofer switches to the standby mode by the automatic powerswitching function, the power indicator lights up in red.) When you play a source again, the power of the subwoofer turns on automatically by sensing audio signals input to the subwoofer. This function operates by sensing a certain level of low frequency input signal. Usually set the AUTO STANDBY switch to the LOW position. However, if the power is not switched to ON or STANDBY smoothly, set the switch to the HIGH position. In the HIGH position, the power will turn on even with a low level of input signal. But please be aware that the subwoofer may not switch to the standby mode when there is an extremely low input signal. * The power might turn on unexpectedly by sensing noise from other appliances. If that occurs, set the AUTO STANDBY switch to the OFF position. * This function detects the low-frequency components below 200 Hz of the input signals (i.e., the explosion in the action movie, the sound of the bass guitar or the bass drum, etc.). * The minutes required to switch the subwoofer to the standby mode might change by sensing noise from other appliances. This function is available only when the power of the subwoofer is on (by setting the STANDBY/ON button to ON). This function will not work if the subwoofer is turned into the standby mode by using the STANDBY/ON button. (The power indicator on the front panel goes off.)

ADJUSTING THE SUBWOOFER BEFORE USE
Before using the subwoofer, adjust the subwoofer to obtain the optimum volume and tone balance between the subwoofer and the main speakers by following the procedures described below.

VOLUME

Set the volume level on the amplifier to minimum, and turn on the amplifier and other components. Turn the VOLUME control to set the control to minimum (0). Make sure that the POWER switch on the rear panel is set to the ON position, then press the STANDBY/ON button to turn on the subwoofer.
* The power indicator lights up in green.
Press the PHASE button to select the regular or reverse mode which gives you the better bass sound.
Normally, select the reverse mode (so that the PHASE indicator on the front panel lights up in green). If the desired response cannot be obtained, select the regular mode (so that the PHASE indicator lights up in red).
Select MOVIE or MUSIC according to the played source.
MOVIE (when the MUSIC/MOVIE indicator on the front panel lights up in green): When a movie type source is played, the low-frequency effects are enhanced to allow the listener enjoy more powerful sound. (The sound will be thicker and deeper.) MUSIC (when the MUSIC/MOVIE indicator on the front panel lights up in red): When an ordinary music source is played, the excessive low-frequency components are cut off to make the sound clearer. (The sound will be lighter and reproduces the melody line more clearly.)
Play a source containing low-frequency components and adjust the amplifiers volume control to the desired listening level. Turn the HIGH CUT control (or press the HIGH CUT UP/DOWN buttons on the remote control) to set the control to the position where the desired response can be obtained.
Normally, set the control to the main speakers rated minimum reproducible frequency*. * The main speakers rated minimum reproducible frequency can be looked up in the speakers catalog or owners manual.
Once the volume balance between the subwoofer and the main speakers is adjusted, you can adjust the volume of your whole sound system by using the amplifiers volume control. However, if you change the main speakers to others, you must make this adjustment again.
Increase the volume gradually to adjust the volume balance between the subwoofer and the main speakers.
Normally, set the control to the level where you can obtain a little more bass effect than when the subwoofer is not used. If the desired response cannot be obtained, adjust the HIGH CUT control and the VOLUME control again.
For adjusting the VOLUME control, the HIGH CUT control and the PHASE button, refer to Frequency characteristics on page 17.
Storing preset data of the VOLUME control etc.
You can store preset data of the VOLUME control, the HIGH CUT control, the PHASE button and the B.A.S.S. switch as a set. Each of the three PRESET buttons on the remote control is used to store (and recall) one set of data. With this function, you can recall any preset data easily according to the source.

The level of input signal is too low. There is an influence of noise generated from external appliances etc.
The household breaker goes off.
The subwoofer consumes much electricity when a high level signal is inputted to the subwoofer. Direct sunlight or lighting (of an inverter type of fluorescent lamp etc.) is striking the remote control sensor of the main unit. The batteries of this remote control are too weak.
The remote control does not work.
The distance or range within which the remote control can be used decreases.
Replace the batteries with new ones.
Note When an excessive level of signal is inputted to the subwoofer for 5 to 15 minutes, the power indicator begins flashing to alarm you of the danger of damaging the power amplifier and speaker in this subwoofer system. If the signal input lasts for 5 minutes more, the subwoofer turns into the standby mode automatically.

SPECIFICATIONS

Type.. Advanced Yamaha Active Servo Technology Power Consumption.. 250W
Driver.. 30 cm (12) cone woofer Magnetic shielding type
Standby Power Consumption.. 1.0W
Dimensions (W x H x D). 420 mm x 511 mm x 448 mm Amplifier Output... 1 kW/5 (16-9/16 x 20-1/8 x 17-5/8)
Frequency Response.. 16 Hz160 Hz (10 dB)
Weight.. 29 kg (63 lbs. 15 oz.)
Power Supply U.S.A. and Canada models.. AC 120V, 60 Hz U.K. and Europe models. AC 230V, 50 Hz Australia model.. AC 240V, 50 Hz Korean model.. AC 220V, 50 Hz * Please note that all specifications are subject to change without notice.
YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA YAMAHA
ELECTRONICS CORPORATION, USA 6660 ORANGETHORPE AVE., BUENA PARK, CALIF. 90620, U.S.A. CANADA MUSIC LTD. 135 MILNER AVE., SCARBOROUGH, ONTARIO M1S 3R1, CANADA ELECTRONIK EUROPA G.m.b.H. SIEMENSSTR. 22-34, 25462 RELLINGEN BEI HAMBURG, F.R. OF GERMANY ELECTRONIQUE FRANCE S.A. RUE AMBROISE CROIZAT BP70 CROISSY-BEAUBOURG 77312 MARNE-LA-VALLEE CEDEX02, FRANCE ELECTRONICS (UK) LTD. YAMAHA HOUSE, 200 RICKMANSWORTH ROAD WATFORD, HERTS WD1 7JS, ENGLAND SCANDINAVIA A.B. J A WETTERGRENS GATA 1, BOX 30053, VSTRA FRLUNDA, SWEDEN MUSIC AUSTRALIA PTY, LTD. 17-33 MARKET ST., SOUTH MELBOURNE, 3205 VIC., AUSTRALIA