"If you know subwoofers, you know about Velodyne." -Corey Greenberg Home Theater Technology/February 1995 Face Off: Comparison of five subwoofers ".the HGS-10 can be used in settings where a larger, more conventional subwoofer would be unacceptable. In addition, its performance is good enough that it's worth considering even if space is not an issue. Just be prepared to watch your friends' jaws drop when you tell them the bass they're hearing is coming from that little box." -Robert Deutsch Stereophile Guide to Home Theater/September 1998 "In general, the Velodyne (HGS-12) could play slightly louder, and often cleaner, than the Sunfire." "The Velodyne HGS-12 was an excellent performer whose output and bass extension were competitive with those of much larger subwoofers. With its compact size, sturdiness, good looks, and low distortion, it warrants serious consideration." -D.B. Keele, Jr. Audio/ June 1998
HGS 10 & 12 Owner's Manual
Velodyne Acoustics, Inc. 1070 Commercial St. Suite #101 San Jose, CA 95112 408.436.7270 voice 408.436.7276 fax Service Department - Ext. 3019 Product Questions - Ext. 3070 Web Site: http://www.velodyne.com E-mail: velodyne@earthlink.net
High Gain Servo-Controlled
Audio/Video Subwoofer System
Printed on recycled paper.

#63-617 Rev. B

Other Velodyne Subwoofer Products:

F Series

FSX-12 FSR-10 FSR-12 FSR-15 FSR-18

VA-X Series

VA-8100X VA-1012XII VA-1250X

CT Series

CT-80 CT-100 CT-120 CT-150
To request literature on any of these products call 1-800-VELODYNE

INSTALLATION

WORKSHEET
IMPORTANT SAFETY INSTRUCTIONS

CAUTION

RISK OF ELECTRIC SHOCK DO NOT OPEN

Date: _____________

MODEL# ________________
Caution: To reduce the risk of electric shock, do not remove cover (or back). No user-serviceable
Installed by: _____________________ Phone: _______________ Volume Setting: ____________ Low Pass X-Over: _________ Hz Output Level (dB): _________ Phase Pos.: 0 ________ 180 ________
parts inside. Refer servicing to qualified service personnel. The lighting flash with arrowhead symbol is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons. The exclamation point symbol is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the subwoofer.
1. 2. 3. 4. 5. 6. 7. 8. Read Instructions -- All safety and operating instructions should be read before the subwoofer is operated. Retain Instructions -- The safety and operating instructions should be retained for future reference. Heed Warnings -- All warnings on the subwoofer and in the operating instructions should be adhered to. Follow Instructions -- All operating and use instructions should be followed. Water and Moisture -- The subwoofer should not be used near water -- for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, near a swimming pool or the like. Carts and Stands -- The subwoofer should be used only with a cart or stand recommended by the manufacturer. Wall or Ceiling Mounting -- The subwoofer should be mounted to a wall or ceiling only as recommended by the manufacturer. Ventilation -- The subwoofer should be situated so that its location or position does not interfere with its proper ventilation. For example, the subwoofer should not be situated on a bed, sofa, rug, or similar surface that may block the ventilation openings; or placed in a built-in installation such as a bookcase or cabinet that may impede the flow of air through the ventilation openings. Heat -- The subwoofer should be situated away from heat sources such as radiators, heat registers, stoves, or other subwoofers that produce heat. Power Sources -- The subwoofer should be connected to a power supply only of the type described in the operating instructions or as marked on the subwoofer. Power-Cord Protection -- Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against them, paying particular attention to cords at plugs, convenience receptacles, and the point at which they exit from the subwoofer. Caution: To prevent electrical shock, match wide blade of plug to wide slot, fully inserted. Cleaning -- The subwoofer should be cleaned only as recommended by the manufacturer. Nonuse Periods -- The power cord of the subwoofer should be unplugged from the outlet when left unused for a long period of time. Object and Liquid Entry -- Care should be taken so that objects do not fall and liquids are not spilled onto the enclosure. Damage Requiring Service -- The subwoofer should be serviced by qualified service personnel when: a. The power-supply cord or plug has been damaged. b. Objects have fallen or liquid has been spilled into the subwoofer. c. The subwoofer has been exposed to rain. d. The subwoofer does not appear to operate normally or exhibits a marked change in performance. e. The subwoofer has been dropped or damaged. Servicing -- The user should not attempt to service the subwoofer beyond what is described in the operating instructions. Overloading - Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock. Replacement parts - When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer or have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards. Safety Check - Upon completion of any service or service of repairs to this product, ask the service technician to perform safety checks to determine that the product is in proper operating condition. All other servicing should be referred to qualified service personnel.

40Hz - 120Hz 40Hz - 120Hz (12 dB/octave initial, 48 dB/octave ultimate) 0 / / watts RMS/2400 peak 1250 watts RMS/3000 peak 10", high-excursion 2" max. 12", high-excursion 2" max. 310oz.(19.3 lbs.) 310oz. (19.3 lbs.) Tandem 3" push-pull Tandem 3" push-pull Line-level Line-level Line-level, 80Hz up Line-level, 80Hz up

VORSICHT

HGS-12
14" x 14.5" x 14"

Two years

51 lbs. 45 lbs.

SPECIFICATIONS

17. 18. 19.

Low Pass Crossover

Phase Amplifier (Class D) Woofer (forward firing) Magnet Structure Voice Coil Inputs Outputs Warranty (parts & labor) Weight (approx.)
Cabinet (W/H/D w/o grille) Frequency Response Harmonic Distortion Subsonic Filter High Pass Crossover
Specifications are subject to change without notice.
20Hz - 120Hz +/- 3 dB <1% (typical) 20Hz or 35Hz

HGS-10

11" x 11.5" x 11"
Troubleshooting & Service
If you should experience a problem with the operation of your subwoofer, please check all of the following before seeking service. Following is a simple troubleshooting guide to assist you. 1. 2. 3. 4. 5. Verify unit is plugged in and power outlet used is active. Is auto turn on/off set properly? Is unit receiving an input signal from your source? Have all controls on subwoofer (volume, crossover, phase, etc.) been properly set? If unit has been running at high levels for an extended period of time, one of the protection circuits may be engaged. Has the built-in amplifier overheated? Is your power line voltage sagging under heavy use? If the protection circuitry is active, the unit may cycle on and off until operating parameters return to normal. Under more serious conditions, the unit may shut off completely. Normal operation will return upon cooling, but you may be required to unplug the unit momentarily. The following conditions require service by a qualified technician: 1. The power cord has become damaged. 2. The unit does not appear to operate normally or exhibits a marked change in performance. 3. The unit has been exposed to water. 4. Some part of the cabinet or circuitry is physically damaged.
IMPORTANTES CONSIGNES DE SECURITE

Velodyne Service Department: (408) 436-7270 Ext. 3019
Thank you for purchasing a Velodyne!

continued.

Congratulations!
Congratulations on your purchase of a Velodyne subwoofer system. This system represents the absolute state of the art in accurate low frequency reproduction. We believe this to be one of the finest subwoofers available anywhere! In this new subwoofer, we have combined our radical new driver & amplifier designs to obtain our traditionally accurate sound while increasing efficiency and output to new standards. This exceptional subwoofer will provide you with years of unparalleled listening pleasure. Enjoy!
conventional non-servo systems. While the input signal is being sent to the amplifier which powers the driver, a continuous signal representing cone motion is being sent to a comparator circuit. This circuit constantly adjusts for any deviation between the input signal and the subwoofer's output. This self regulation results in extreme control over cone movement, and very accurate low distortion sound. To provide the power for driving this massive loudspeaker, we incorporated an extremely efficient Class D switching amplifier. This new amplifier features our patent pending energy recovery circuit design which drastically reduces wasted energy (heat) as compared to traditional switching designs. One that is capable of running cool to the touch and providing 1000 or 1250 watts (RMS - depending on the model) of power! At typical listening levels, the HGS produces less than 1% harmonic distortion with input signals extending to 20Hz. At higher levels the distortion barely exceeds 1%, far better than any conventional design currently on the market. This combination provides you with the best combination of clean, deep, accurate bass, without making any sacrifice to distortion.

Caution!

Please observe the following instructions to insure safe and proper system operation. Warning! To prevent fire or shock hazard, do not expose this equipment to rain or moisture. To avoid electrical shock, do not open speaker enclosure or amp chassis cover. Please observe all warnings on the equipment itself. There are no user serviceable parts inside. Please refer all service questions to your authorized Velodyne dealer. Prior to installation Please unpack the system carefully! This unit is heavy. Use caution when lifting or moving to avoid injury. Remove all staples used to seal the carton as they can scratch the cabinet. Please save the carton and all packaging materials for future use. Packing this unit in any other carton may result in severe damage when shipping. Please take a moment to record the serial number and date/location of purchase in the space provided on the warranty card for future reference. Important Note: Do not move unit while plugged in!

Care of your subwoofer

Do not use any harsh detergents or chemicals to clean the cabinet. Abrasives, detergents, or cleaning solutions may damage the finish on the cabinet. We recommend using a damp cloth to clean the cabinet. During normal conditions, your new subwoofer may be left on continuously without any problems. The unit is equipped with a signal-sensing turn on/off that will automatically turn on the unit when a signal is present at the inputs and turn off the unit after several minutes when there is no longer any signal at the inputs. If you plan to leave the subwoofer unused for an extended period of time, we recommend that you unplug the unit.
systems, particularly home theater systems. Even at 1 watt, many conventional units produce several percent distortion. Secondly, the odd order, higher harmonics are much more offensive to the human ear than the closer 2nd harmonic. An interesting result of this reduced distortion is that some of the bass, when played over an extremely accurate subwoofer system, seems to actually be missing. The truth, however, is that the "missing" bass was never there to begin with! Distortion products of conventional woofers actually add to the bass spectrum making it appear louder than recorded. This is due to the additional and unwanted harmonics (distortion) of the fundamental signal. While conventional subwoofers offer little to combat distortion products, we at Velodyne have developed another way.
Product Features & Controls
10" or 12" subwoofer with tandem 3" voice coils & 310 oz. motor Built-in 1000/1250 watt (RMS) high efficiency class D amplifier Accelerometer based servo control system for extreme accuracy Adjustable (40 to 120Hz) low-pass crossover (defeatable) Multiple staggered low-pass crossovers; 12dB/octave initial, 48dB/octave ultimate Line-level (RCA) inputs & outputs 80 Hz high-pass crossover output Signal sensing auto turn on/off (defeatable) Variable volume control Selectable phase control (0 or 180) Selectable subsonic filter (20Hz or 35Hz) Frequency response of 20Hz - 120Hz +/- 3dB Detachable power cord Anti-clipping circuit prevents over excursion & amp clipping Optional remote control with power, volume and mute functions
The Velodyne servo-control solution
The Velodyne HGS subwoofers produce sound in the same manner as conventional loudspeakers: a cone-shaped piston is forced to move by means of a linear motor. However, this is about the only conventional part of the subwoofer. We determined that conventional motors are unacceptable when called upon to produce the amount of linear motion we desired. This inadequacy led us to design an improved motor structure by incorporating two coils, operating out of phase in a push-pull configuration within two magnetic gaps & suspended by dual spiders for even greater linearity. We designed this motor to produce over one inch (1-1/4" to be exact) of linear motion, with a maximum mechanical limit of 2" peak to peak. Also, with this unique configuration, the distortion products are reduced by a factor of two over conventional single coil structures with dramatically improved cone control. This driver alone would result in less distortion than any other non servo design. After optimizing every remaining part of the loudspeaker, we then turned to the electronics. As in our other servo products, we then incorporated closed-loop accelerometer based servo-control of the loudspeaker. At the heart of this control system is a low mass accelerometer rigidly attached to the voice coil. The accelerometer continuously monitors cone motions, providing a feedback signal for the servo control circuitry. This high-gain system is designed to improve linearity and reduce distortion approximately 30 times over

Installation

Your new Velodyne servo subwoofer provides for a number of installation options. Read all the installation information below in order to determine which installation option is best for your system. Remember to perform all installation procedures with subwoofer unplugged!!! Inputs Your new subwoofer is equipped with line-level inputs. Use the LINE LEVEL jacks when connecting your subwoofer to a pre-amp, signal processor, line-level crossover, or receiver with pre-amp level outputs. If your receiver/electronics does not have RCA type line level outputs, you must use a high to low level adapter. Consult the dealer where you purchased the unit for further details.
Volume control This control allows you to balance the output from the subwoofer to the main speakers/ amplifier in your system. This control should be set to achieve similar output level from both the main speakers and subwoofer when listening to music. A good starting point for the volume control is 4 or 5 dots from minimum. Low-pass crossover- 40 to 120Hz The line-level inputs sum the left and right channels together, with the resulting signal passing through an adjustable low-pass crossover before being amplified. The crossover control allows you to adjust the upper limit of the subwoofer's frequency response from 40 to 120Hz. The subwoofer's output will be reduced above the frequency you set this control to. You should set the crossover frequency to obtain a smooth and seamless transition from the subwoofer to the main speakers in your system. If your main speakers are smaller units with limited low frequency output, you may wish to choose a higher frequency (such as 100-120Hz) than you would with larger speakers which have greater low frequency output. With larger speakers, you might start with this control set lower, such as 80Hz. A bypass switch is also provided if you wish to use an external crossover. If you are not using an external crossover, we recommend that you use the one provided within the unit for optimum performance! Phase adjustment- 0/180 This control allows you the "reverse" the phase of the subwoofer's output signal 180 to correct for any possible mismatch & resulting cancellation between the subwoofer and your main speakers/amplifier. To adjust, simply listen to the system with music playing. Then move the switch from one position to the other and listen for a change in low frequency output. The correct position will have a greater amount of apparent low frequency output. Subsonic- 20Hz/35Hz This adjustment alters the low frequency limit of the subwoofer. In certain movie theater installations which suggest that the extreme low bass be limited, move the switch position to 35Hz and the response will be attenuated below this frequency.

Protection circuitry

Your new subwoofer is equipped with special protection circuitry to provide maximum performance with greatest reliability. The unit is protected against: 1) Overdriving the speaker or amplifier. 2) Overheating the amplifier. 3) Excessive drop in power line voltage. The first type of protection circuitry which prevents overdriving of the speaker or amplifier operates constantly without being audible under most situations. In some extreme situations (sustained high output levels such as pro sound usage), the unit may shut down momentarily. This indicates operation of the thermal or undervoltage protection circuitry. If this should happen, you should reduce the volume setting or shut the unit off until normal operating conditions return. You may also want to plug the unit into a different wall outlet, as dropping power line voltage will be most noticeable under strenuous conditions.

Distortion in loudspeakers
Nonlinear distortion is a problem which plagues all speakers. This particular type of distortion is a common problem in subwoofers, which must move large amounts of air to produce adequate levels of deep bass. Nonlinear distortion is defined as any form of distortion that moves energy from one portion of the audio frequency spectrum to another. When a single tone is applied to a nonlinear system, the result is harmonic distortion. In which some of the energy leaves the system at multiples of the original frequency. When multiple tones are applied, intermodulation tones are produced, usually as simple combinations of the input frequencies. Generally, 3% distortion is considered a reasonable amount for speakers. This means that 3% of the total energy leaving the speaker is at frequencies other than the intended input signal. Most subwoofers on the market today however, produce much more than 3% distortion at common listening levels. Many models we have tested produce greater than 20% distortion @ 20Hz when driven to 100dB. This is a typical output level obtained in many 8

Placement

True subwoofers operate at extremely low frequencies which are primarily omni-directional. While it is recommended that the subwoofer be placed on the same plane as the satellite speakers, room and system conditions often dictate otherwise. Keep in mind that frequency response and output level can be drastically influenced by placement, depending on the acoustic properties of the listening room. Typically, the optimum location for a subwoofer is tucked away in a corner of your listening room. This location will usually provide the greatest output levels with optimum low frequency extension. The worst location for a subwoofer it typically far away from any walls, and close to the center of your room. Avoid these locations when possible. When using a pair of Velodyne subwoofers in stereo, it is preferable to place each subwoofer by the satellite of the same channel. Caution! This subwoofer has electronics built into the cabinet. Do not place the cabinet next to sources of heat such as furnace registers, radiators, etc. Do not place the unit near sources of excessive moisture, such as evaporative coolers, humidifiers, etc. The power cord should be routed in such a way that it will not be walked on, pinched, or compressed in any way that could result in damaging the insulation or wire. Regardless of where you install your Velodyne subwoofer, it must remain in an upright position (woofer facing forward). Using, shipping, or otherwise storing the subwoofer in any other position for an extended period of time may result in damage to the unit not covered by warranty. Certain types of televisions are particularly sensitive to stray magnetic fields. If your television produces distorted colors after installing your subwoofer, simply increase the distance between your television and the subwoofer, until normal color and operation is returned.

Crossover switch- In/Out This switch allows the electronic crossover circuitry to be removed from the signal path. This is preferable in certain installations which route the signal through external processors with a crossover circuit of their own, such as the new digital units. Simply move the switch to OUT to disengage the built in crossover. For all other installations which do not have a separate electronic crossover we recommend you leave the internal crossover IN to provide optimum performance. Auto turn on function With this function in the "auto" position, your subwoofer can be safely left with the main power switch on continuously. The subwoofer will turn itself on automatically when an audio signal is present. If no signal is present for approximately 15 minutes, the unit will switch to standby mode. While in standby mode, your subwoofer will draw very minimal power. This function can be disabled by leaving the switch in the "on" position. Remote sensor This connection allows for hook-up of the optional remote control receiver. With this optional receiver plugged in you will be able to utilize the functions of the remote to control power, volume and mute functions. Place the infrared receiver within direct line of sight from your usual listening position. Detachable power cord Allows for easy replacement should the original be damaged. Optional Infrared remote control The optional remote control unit allows for convenient adjustment of select subwoofer functions. The power button turns the unit on/off. The volume +/- buttons on the remote allows you to increase or decrease the output volume of the unit relative to the setting of the main volume control on the rear panel. The middle reset button returns the remote volume control to neutral, output level will then be determined by the manual volume control setting. Initial setup of the unit should be performed with the remote volume at neutral, while you adjust the manual volume knob to match playback levels. The mute button silences the unit. If you choose to utilize the remote to turn the unit on/off, we suggest setting the auto turn on switch to the on position. This deactivates the sensing circuitry allowing the remote to have total control of unit power.
NOTE: Two AAA batteries are required & included for operation. If the remote control operating range deteriorates, please check batteries for deterioration. Do not leave remote placed on heat generating items, such as amplifiers.
When installed in this fashion, your satellite speakers will be crossed over at 80Hz which removes the lower bass from your amplifier and speakers, enabling them to do a better job reproducing high frequencies. By utilizing this method, you will have a bi-amplified system, gaining improved power and headroom for your system. Subwoofer outputs The Velodyne subwoofer is designed to operate using the full range audio signal for input when using the built-in crossover. Some processors/receivers, have a "subwoofer out" jack that is internally filtered and designed to be used with a conventional amplifier and speaker. In some rare cases, combining both an external crossover and the one internal to the subwoofer may result in low output and increased noise. In these installations you may need to bypass the internal crossover in either the processor or Velodyne subwoofer. In some installations, simply setting one crossover to a higher frequency (such as 120 Hz) will restore maximum performance. To bypass the subwoofer's internal crossover when the unit is being fed a low pass signal from another crossover, simply locate the switch marked X-over, OUT - IN on the rear panel of the subwoofer and set to the OUT position. This will eliminate the internal crossover from the signal path. Note. If not using an external crossover, you should use the built-in crossover for optimal performance.

Line-level connection

Figure 1 shows connection to a pre-amplifier's main outputs and returning them to your amplifier inputs.
Figure 1: Installation using line-level inputs

SUBWOOFER VOLUME

LOW-PASS CROSSOVER
PHASE MIN MAX 120 Hz 80Hz HIGH-PASS OUTPUT 40 Hz

SUBSONIC

X-OVER

REMOTE

0 - 180 20z - 35Hz

OUT - IN

AUTO - ON

SENSOR

INPUT L

117 V ~ 60 Hz 10 A

CAUTION: UNPLUG UNIT BEFORE MOVING

CAUTION!

SERVO HGS-SERIES
AVIS: RISQUE DE CHOC ELECTRIQUE-NE PAS OUVRIR

VELODYNE ACOUSTICS, INC.

TANDEM 3" PUSH-PULL MOTORS 310 oz. MOTOR STRUCTURE PATENTED HIGH GAIN SERVO

Serial # Label

Interconnect cables
When installing your new Velodyne subwoofer using the line level connections, you should always use shielded phono cables. There are many decent cables available today, most any of which will work perfectly well. We do recommend that you keep the length of cable as short as possible to avoid any potential noise problems. When routing cables, try to keep them away from equipment which generates significant noise such as industrial or digital equipment.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE
U.S. Patent # 4,727,584 & 4,573,189

PRE-AMP

MAIN OUTPUTS LEFT RIGHT

AMPLIFIER

MAIN INPUTS LEFT RIGHT MAIN OUTPUTS RIGHT LEFT

TO SATELLITE SPEAKERS

HGS-X Series
HGS-10X, HGS-12X and HGS-15X
Since 1983, when Velodyne revolutionized subwoofers with its patented High Gain Servo technology, reviewers and consumers have praised their superior performance. The tradition continues with the HGS-X Series delivering Velodynes world-famous powerful, accurate, low distortion bass from incredibly small, easy to place or custom install cabinets. The High Gain Servo system controls Velodynes unique Dual Tandem Voice Coil drivers powered by a Class D amplifier that delivers more than 3000 watts of peak power. Without question, the HGS-X Series are the most powerful, precise and affordable servo-controlled subwoofers on the market today.

HGS-15X

Features
High Gain Servo control for accuracy A flexible high quality crossover system Selectable subsonic filter Infrared remote control (optional) Adjustable low-pass filter Subwoofer Direct crossover by-pass Phase adjustment
ERS Amps - Unprecedented Power
To power these incredible subwoofers, Velodyne uses a digital switching amplifier, capable of producing 1250 watts RMS and over 3000 watts peak. Unlike conventional designs, the HGS-X Series incorporates Velodynes patented Energy Recovery System that converts over 95% of the incoming current to usable power with minimal heat buildup.
High Gain Servo - Lowest Distortion
Only Velodynes High Gain Servo technology can deliver less than 1% distortion all the way down to 20 Hz and below. This patented Velodyne technology utilizes a tiny sealed accelerometer that is mounted to the voice coil, measuring the actual motion of the speaker cone 3,500 times a second. The data is fed into a processor where it is compared to the input signal and any discrepancies are corrected instantaneously. The distortion that produces the boomy, muddy bass of competitive subwoofers is virtually eliminated in the HGS-X Series. The result is deep, dynamic bass that you can actually feel.

HGS-12X

Dual Tandem Voice Coil - Linear Motion
Non-linear cone movement causes a high level of mechanical distortion and sloppy, muddy bass performance. Velodyne conquers this common cause of distortion with its unique Dual Tandem Voice Coil design. This system creates a linear excursion of 1 peak-to-peak with a 2 maximum. A two section magnetic structure in a push-pull configuration with a two segment voice coil wound out of phase generates less than half the distortion of conventional motor designs, and is capable of four times the heat dissipation, contributing to Velodynes distinctive tight, accurate, low distortion sound.

Specifications

Amplifier - Class D Woofer Voice Coil Excursion Magnet Structure Cone High Pass Crossover Low Pass Crossover

HGS-10X

1250 watts RMS/ 3000 watts peak 10" forward firing (8" piston diameter) 3" Dual Tandem push-pull 2" maximum 310 oz (19.3 lbs.) Kevlar reinforced passive 80 Hz (6dB/octave) 40 Hz-120 Hz (12 dB/octave initial, 48 dB/octave ultimate) Yes - Subwoofer Direct Yes Line Level 20-120 Hz +/- 3 dB 20 Hz or 35 Hz 0 or 180 Yes Yes Less than 1% Optional 45 lbs. (20 kg) 11" x 11" x 11" 28.75 x 27.5 x 27.5
1250 watts RMS/ 3000 watts peak 12" forward firing (9.7" piston diameter) 3" Dual Tandem push-pull 2" maximum 310 oz (19.3 lbs.) Kevlar reinforced passive 80 (6 dB/octave) 40 Hz-120 Hz (12 dB/octave initial, 48 dB/octave ultimate) Yes - Subwoofer Direct Yes Line Level 20-120 Hz +/- 3 dB 20 Hz or 35 Hz 0 or 180 Yes Yes Less than 1% Optional 60 lbs. (27 kg) 14" x 14" x 15" 37 x 35 x 39
1250 watts RMS/ 3000 watts peak 15" forward firing (12.7" piston diameter) 3" Dual Tandem push-pull 2" maximum 380 oz (24 lbs.) Kevlar reinforced passive 80/100 Hz (6 dB/octave) 40 Hz-120 Hz (12 dB/octave initial, 48 dB/octave ultimate) Yes - Subwoofer Direct Yes Line and Speaker Level 18-120 Hz +/- 3 dB 15 Hz or 35 Hz 0 or 180 Yes Yes Less than.5% Optional 95 lbs. (43 kg) 19 7/8" x 18" x 17 7/x 45 x 45
Crossover By-pass Anti-Clipping Circuit Inputs and Outputs Frequency Response Subsonic Filter Phase Auto On/Off High Gain Servo Distortion Remote Control Weight Cabinet: (H/W/D) (cm) (includes grill & feet)
Velodyne Acoustics, Inc. 345 Digital Drive Morgan Hill, CA 95037 (408) 465-2800 www.velodyne.com
Copyright 2004 Velodyne Acoustics, Inc. Specifications subject to change without notice. Other trademarks or registered trademarks are property of their respective owners. April 2004, Rev A