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Please read this installers guide
The Model 2150 commercial power amplifier is carefully engineered to provide superior sound quality. This guide will help you set up and operate your system properly.
Record your serial number here
Model 2150 commercial power amplifier: __________________________________________ Date of purchase _______________________ Retailers name _______________________ For ease in obtaining service, we recommend that you keep your purchase receipt, or a copy of the receipt, in this owners guide.
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2.0 Before You Begin

Thank you for purchasing a new Bose commercial power amplifier. It is backed by stateof-the-art engineering and manufacturing techniques to bring you the best in quality craftsmanship and reliable performance. The instructions presented in this installers guide are written for professionals who are familiar with the installation and operation of the equipment. If you are not, contact an authorized Bose Professional Products dealer.
2.1 Unpacking the amplifier
Carefully unpack your amplifier. Keep the original carton and packing materials for possible future use. Check for any visible signs of damage. If the amplifier appears damaged, do not use it. Notify Bose Product Support or your authorized Bose Professional Products dealer.
2.2 The Bose Model 2150 commercial power amplifier
The Bose Model 2150 commercial power amplifier is specially designed for commercial sound applications. Its rugged construction and low profile allow the amplifier to sustain heavy use with reliability and space-saving economy. Accurate sound and ample power make this amplifier ideal for critical listening applications. The Model 2150 amplifier is rated at 150 watts per channel into 4, 8, 25V, 35V, 50V, 70V or 100V. In bridged mono operation, it is rated at 300 watts. Sophisticated protection circuits have been designed into the amplifier to protect your system from unexpected faults. They also help protect the amplifier from excessive temperature, continuous current limiting, and shorted outputs. The balanced inputs of the amplifier use a high quality, high common-mode rejection differential amplifier for exceptional hum and noise rejection. In addition, the Model 2150 amplifier is equipped with an input module to allow for separate equalization of each channel (provided the correct equalization card is installed). Equalization cards (EQ cards) are available for all Bose professional loudspeakers requiring active equalization. A sample setup might involve one Model 2150 amplifier driving two channels of 402 loudspeakers in stereo mode. A second Model 2150 could be added to drive a 502B module. Alternatively, just one amplifier could be used to drive the 402 loudspeakers on one channel and the 502B module on the other channel. Many configurations are possible using the four loudspeakers above. This flexibility can be achieved by installing the EQ cards for the desired setup.

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3.0 Using The Amplifiers

3.1 Using the Bose Model 2150 commercial power amplifier
Once you have installed and wired the amplifier, follow these tips to get the most from it: Verify that all switches (STEREO/MONO, CLIPPING LIMITER, EQ BI-AMP/FULL RANGE AND LEVEL DEFEAT) are set to the mode you want. Turn down the amplifier controls when you power up the system for the first time. Then advance them slowly, one at a time, to verify that each channel is operating correctly. Set input level controls high enough to allow the preceding device to drive the amplifier to full output. Usually, this is wide open (fully clockwise). Write down the settings, either on paper or self-stick dots, and attach to the front of the amplifier. In bi-amplified (multi-amp) systems, start with the low frequency amps turned down or off. Check each frequency range from highest to lowest to make sure each loudspeaker component is operating correctly.

3.2 General precautions

Caution: Place the unit where it will be protected from heat and allow adequate ventilation. Place it away from direct heat sources, such as heating vents and radiators. Make sure the air can circulate freely behind, beside, and above the unit.
3.3 Mechanical considerations
The amplifier requires two 3.5" (8.9 mm) rack space units with a 16" (40.6 cm) inside depth (including the rear supports). When mounting, use four screws with washers to prevent marring the front panel. Neoprene rubber washers are a good choice because they grip the screw head and prevent the screws from backing out from vibration or during transportation.

3.3.1 Rear support

Caution: If either unit is rack mounted and the rack is transported, you must mechanically support the rear of the amplifier. You can place a shelf across the rear of the amplifier or use brackets in such a way as to support the rear of the unit.
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3.4 Thermal considerations
When the amplifier is used freestanding, no thermal considerations are necessary other than keeping sufficient ventilation around the unit. Bose Model 2150 amplifiers may be stacked directly on top of each other without spacer panels. If a Model 2150 amplifier is used with other amplifiers, be sure the heat output from the amplifier does not interfere with the adequate ventilation of the others. If the unit is rack mounted, allow for adequate ventilation exits in front of and behind the amplifier. When several amplifiers are mounted together in a rack, you may need to provide air inlets and a fan from the outside of the rack.
CAUTION: Do not allow the chassis to exceed the maximum operating temperature of 50 C. Be aware of conditions in an enclosed rack that may increase the temperature above room ambient conditions.
3.5 AC power considerations

3. Status indicators Figure 3

Thermal Protect Ready

Status indicators
Status indicators are visible for the following (See Figure 3): THERMAL A red light indicates when the amplifier temperature has exceeded its working limits. When the THERMAL LED illuminates, both channels of the amplifier will become muted. The amplifier will shut down and reset itself when conditions return to a safe operating temperature.
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3. Status indicators (cont.)
PROTECT A yellow light indicates if there is: 1. An over or under voltage condition 2. An over current condition 3. A short circuit Any of these conditions will immediately mute both channels on the amplifier. Check all connections and level settings. The amplifier will automatically shut down and reset itself when conditions return to a safe operating temperature. READY A green light indicates that the amplifier is on.
4. Network activity indicator
In the future a network compatible input card will be available for the amplifiers. When this card is installed, the network LED will flash yellow when the amplifier is receiving network information.

5. Standby indicator

The LED illuminates yellow when the amplifier is set to STANDBY (standby).

6. Power switch

The power switch has three positions (ON/OFF/STANDBY). When on, the READY indicators illuminate green. When off (middle position), no power reaches the unit and the sequencing function is not active. When set to STANDBY, the AC mains is connected to the standby circuit. The circuit awaits a 12V DC current to be supplied to the amplifier. When the DC current is detected, a triac allows the AC mains to be connected to the power supply, turning the amplifier on.
Note: Standby and Sequencing modes are activated at the amplifier only when using the standard input module.
See Section 4.3.1 for additional information regarding the sequence feature.

7. Removable rack ears

Caution: If you shelf-mount the amplifier, the rack ears can be removed. Once removed, replace the screws that fastened the rack ears to the chassis. This will maintain the structural integrity of the chassis.
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4.2 Rear Panel

RISK OF ELECTRICAL SHOCK DO NOT OPEN COVER, AUTHORIZED PERSONNEL ONLY.

Com 4 8

RISQUE DE CHOC ELECTRIQUE NE PAS OUVRIR CE CARTER, RESERVE AU PERSONNEL AUTORISE.
100V Com 70V 25V 35V 50V 4 8

100V 25V 35V 50V 70V

Use Class 2 Wiring
For bridged operation. Consult user manual.

WARNING

TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
IN FX ON CLIP ON HP 120 Hz IN FX ON CLIP ON HP 120 Hz
This device complies with part 15 of the FCC rules. Operation is subject to the following conditions: (1) This device may not cause harmful interference and (2) this device must accept any interference received, including interference which may cause undesired operation. Complies with Canadian ICES-003 Class A specifications.
RISK OF HAZARDOUS ENERGY! MAKE PROPER SPEAKER CONNECTIONS. SEE OPERATING MANUAL BEFORE USING.
INPUT IMPEDANCE 25K OHMS EACH LEG TO GROUND (TOTAL 50K OHMS BALANCED)

SEND RECEIVE

SEQUENCE

REMOTE LEVEL

AVERTISSEMENT
ENERGIE ELECTRIQUE DANGEREU SE. VOIR LANOTICE DE FONCTIONNEMENT.
120VAC, 4.6A max. 60 Hz 600W
OUT OFF OFF 80 Hz OUT OFF OFF 80 Hz

SND RCV COM CH2 CH1 +5V

INPUT CH 2
SEQUENCE EQUALIZATION ON CH1

INPUT CH 1

SERIAL No.: D.O.M.:

FX CH 2

SEND RECV SEND

FX CH 1

J20018292 +

Model 2150

BOSE CORPORATION FRAMINGHAM, MA 01701-9168 U.S.A.

CH2 CH2 EQ. OUT CH1

MADE IN U.S.A. OF DOMESTIC AND FOREIGN COMPONENTS.

PN# 1234567

1 Standard Input Module

4 Equalizer Present LEDs

7 Dip Switches
8 AC Power Sequence Connector 9 Remote Level Control 10 IEC Power Cord
2 Input Connectors 3 EQ Out Connectors

5 Speaker Outputs

6 Effects Loop
Input Modules 1. Standard input module
Through the use of the Bose input module (the standard module provided with the amplifier) and EQ cards, Bose Model 2150 amplifier can provide active equalization for Bose Model 8, Model 32, Model 32SE, 402, 502A, 502B and 802 Series II professional loudspeakers. Each channel of the input module has its own EQ card input connector, which allows independent equalization for each channel. For a view of the input module, refer to Figure 31 on page 28.

2. Input connectors

A combination 14" TRS/XLR input connector on the input module allows for either a 14" TRS (Tip-Ring-Sleeve) input or a XLR input. The input module quick-connect terminal block is wired in parallel with the TRS/XLR input connector. This allows for easy connection of stripped wires to the provided connector. Two parallel input connectors allow for simple connection of parallel amplifiers. Only one connection per channel can be used.
Note: When using the standard input module in mono mode, use CH 2 input only.
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4.2 Rear panel (cont.)

3. EQ out connectors
A 14" TRS output connector provides access to an equalized line level output signal for each channel. If equalizer cards are installed, this signal has passed through the internal equalizer, but has not passed through the amplifier itself. (For additional information on EQ cards, see Input Modules on page 10.) This is helpful if several devices are going to be driving similar Bose loudspeakers (402 loudspeakers, for example) with the same source signal. With EQ cards installed in the Model 2150 amplifier, the EQ OUT (output) of the amplifier can be connected to the line level inputs of additional devices driving the same type of Bose loudspeakers (e.g. 402 loudspeakers). Be sure to use EQ cards that correspond to the type of loudspeakers.
4. Equalizer present LEDs
When you install an equalizer card, the corresponding LED illuminates to indicate the presence of the card. Each channel can utilize a different card. For example, the Bose Model 2150 commercial power amplifier can have both a 402 and a 502B equalizer card installed. When you install a 502B card in either card position, it automatically selects the high frequency output of the other card. When a system uses two or more amplifiers, and you are using a 502B module, use the EQ BI-AMP/FULL RANGE switch to run in the bi-amp mode.
Note: When EQ cards are installed, the input module recognizes the cards and switches to the equalizer circuitry. If no cards are installed, the input module bypasses the equalizer circuitry and no LED will illuminate.
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100V Com Com 70V 25V 35V 50V 8 8

2 Input Connectors

4 Equalizer Present LEDs 5 Speaker Outputs 6 Effects Loop

3 EQ Out Connectors

5. Speaker outputs
Barrier block speaker outputs on each channel accommodate independent connections for 4, 8, 25V, 35V, 50V, 70V, and 100V. The COM tap is the negative connection () and the positive wire (+) connects to the desired load.

6. Effects loop

Independent serial effects (FX) Loops per channel allow you to add additional processing. The FX Loop is unbalanced and can accommodate levels up to +20dBu.

7. Dip switches

Figure 4

Dip Switches

Each channel has dip switches for Clip Limiter, High-Pass Filter and FX Loop.

Figure 5

Signal Path
120H HPF Signal Effects Input Module Electronic Switch 80 Hz HPF Electronic Switch Electronic Switch VCA Section Signal to Amp Output Stage
Master Level, Remote Level

CLIP ON

Send Always Hot! Configuration Dip Switch

CLIP OFF

HP OFF

OUT FX

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Effects Receive

120 Hz

Control Voltage Input

100V Com 70V 50V 25V 35V 50V 70V
5 Speaker Outputs 6 Effects Loop
8 AC Power Sequence Connector 9 Remote Level Control

10 IEC Power Cord

FX Loop in/out Engages or bypasses the FX loop. ON (on) allows signals to pass through the FX loop. OFF (off) closes the loop internally.
A four-pin barrier block connector is provided on each channel. The FX loop can be used to send and receive unbalanced signals from outboard signal processing equipment such as EQs, Delays, Limiters, etc. To activate the FX loop, set the dip switch to the ON position. The send pins (+ and ) are always active and can be used to daisy chain the signal from one amp to another amp via the receiving amplifiers normal input. The return pins are activated by the FX dip switch.
Clip limiter Select between ON and OFF. When set to ON, the clip limiter will engage when the output stage exceeds 0 dB, preventing output stage clipping. When set to OFF, there is no clip limiter in the signal chain. High-pass filter on/off Selects whether the high-pass filter is ON or OFF. When set to ON, the high-pass filter will default to the selection made on the 80Hz/120Hz dip switch. When set to OFF, there is no high-pass filter in the the signal chain. 120Hz/80Hz (12dB/octave high-pass filter) Selects the frequency for the high-pass filter. Selectable between 120Hz and 80Hz.
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8. AC Power sequence connector
A three-pin Euro style terminal and mating connector are supplied with each amplifier to allow the amplifier to be sequenced on or off remotely. This allows multiple amplifiers to be powered on or off locally by using the first amplifier as the on/off master. These terminals are located on the rear panel of the amplifier and are labeled SEQUENCE. The three terminals are from left to right and labeled ground, SND, and RCV (see Figure 6). The sequence feature can be used to turn on or off one or more Bose amplifiers. When used with more than one amplifier the sequence feature will turn the amplifiers on or off sequentially at about 0.5 second intervals. This will prevent a large turn-on surge through the AC mains supply that could possibly cause disruption of the flow of current through the AC mains.

Figure 9

Ground test procedure
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8. AC power sequence connector (cont.)
When mounting the amplifiers in a common rack, you should verify if the amplifiers chassis are sharing a common ground via the rack rails. To do this use a Digital Multi-Meter DMM to measure the DC resistance between the rack rail and the chassis ground of each unit. Set the DMM to measure DC resistance. Connect one probe to the rack rail and the other to the chassis ground terminal on the SEQUENCE terminal of the Bose 2150. If the DC resistance is greater than 0.2 ohms we recommend that you connect the chassis ground terminals of the sequence connector together in a daisy chain as in Figure 8. Repeat this for each Bose 2150 in the rack. You do not have to daisy chain the chassis grounds together if there is less than a 0.2 ohm resistance from the rail to the chassis ground of each unit. Let the rack rail be your chassis ground path.
Using other amplifiers in the power sequence: The Bose Models 1600 VI and 1800 VI can be used together with the Bose Model 2150 in a sequenced configuration.
However, as the sequence terminal on the Bose Model 1600 VI and 1800 VI has no chassis ground connector, whenever this manual references the chassis ground connector, you should replace it with some reliable ground connection point on the amplifier chassis, such as a screw that is used in fastening the chassis parts together. A good example would be the screws that retain the Bose input modules to the amplifier chassis. All other connections would be exactly as described in this discussion of sequencing hook-up procedures.
Note: For operation details regarding the Bose Model 1600 VI and the 1800 VI, please consult the respective user guides provided with those amplifiers.
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100V Com 70V 25V 35V 50V 50V 70V
9. REMOTE LEVEL (remote level) control
Use a 1k to 10k potentiometer, preferably with a reverse log taper. Identify the terminal of the pot to which the wiper is connected when the knob is set to the fully clockwise position. Connect this terminal to the RTN (ground return) terminal of the REMOTE LEVEL input plug. Connect the center terminal of the pot to the CH1 (or CH2) control voltage terminal of the REMOTE LEVEL input plug. The two channels are independently controlled by the voltages applied to the CH1 and CH2 terminals. Both control inputs can be connected together and driven off the wiper of one pot. Connect the remaining terminal of the pot to the +5V terminal of the REMOTE LEVEL input plug. This connection will set the control voltage to 0 with the knob fully clockwise (maximum level), 5V with the knob fully counterclockwise (minimum level). Inside the amplifier, a 0V control voltage corresponds to 0dB added attenuation (that is, added to the attenuation already set by the front panel level control for that channel). A 5V control voltage corresponds to 100dB added attenuation. The control voltage effect is dB linear: a 2.5V control voltage input will add 50dB of attenuation: the control characteristic is -1dB per 50mV.

REMOTE LEVEL control wiring recommendations For best results, use 24AWG (or larger) control wiring, especially for the +5V and RTN connections. Since 24AWG wire has DC resistance of 25mW per foot, using 1000 feet of 24AWG (total loop resistance of 50W) to make connection to a 5kW potentiometer will result in a 1% voltage drop. This will cause a reduction in the control voltage range. This voltage drop increases as more current is carried by the +5V and RTN conductors; for example, when the 5V line is used to light a remote LED indicating that the amp is ON.
In the example given above, an additional 10mA load on the +5V and RTN conductors will cause 10% reduction in control voltage range, yielding lower maximum level and higher minimum level. Within reason, conductor capacitance is not a problem since the control voltages are averaged in the amplifier and any additional RC delay will not be noticeable.
Note: Do not connect the RTN conductor to a ground reference at the remote control location. Ground potential differences will drive currents through the RTN line and cause unpredictable REMOTE LEVEL control performance.
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Com 8 4

Figure 10
Single remote volume control of Channels 1 and 2

Ch 1 and 2 COM

Return/+5V

Ch 1 and Ch 2

100V Com 70V 25V 35V 50V 8 4

Figure 11

Remote volume control of Channel 1

Ch 1 COM

Figure 12
Independent control of Channel 1 and Channel 2

Ch 2 COM

Ch 2 Zone 1

Ch 1 Zone 2

10. Power
Insert the power cord into a properly configured A/C power mains.
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5.0 Installation

5.1 Installing Bose EQ Cards
If your Bose loudspeakers require active equalization, follow these steps to install them in the Model 2150: 1. Turn the power switch to the OFF position.

Figure 13

Turning the power switch off
2. Remove all input card connections to the amplifier. Then, disconnect the power cord from the wall outlet and the amplifier.

Figure 14

Removing card connections and disconnecting the power
3. Remove the input card screws.

Figure 15

Removing screws
INPUT IMPEDANCE 25K OHMS EACH LEG TO GROUND (TOTAL 50K OHMS BALANCED) INPUT IMPEDANCE 25K OHMS EACH LEG TO GROUND (TOTAL 50K OHMS BALANCED)
SEND SEND RECEIVE RECEIVE

PUSH PUSH

INPUT CH INPUT CH
SEQUENCE SEQUENCE EQUALIZATION EQUALIZATION ON ON CH1 CH1

J20018292 + +1 1

CH2 CH2 CH2 CH2 EQ. OUT EQ. OUT CH1 CH1
4. Remove the input card and disconnect the ribbon cable.

Figure 16

1800 SERIES V PROFESSIONAL AMPLIFIER

ON CLIP 120 Hz ON HP IN FX
Remove card and disconnect ribbon cable
OFF 80 Hz OFF OUT OFF 80 Hz OFF OUT
SEND RECV COM CH1 CH2 +5V

J20018292

CH2 EQ. OUT CH1
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5.1 Installing Bose EQ Cards (cont.)
If your Bose loudspeakers require active equalization, follow these steps to install them in the Model 2150: 5. Install EQ card into the desired channel.
Note: If you are using the amplifier in dual mono or bridged mono mode, you must install the equalizer card in Channel 2.

Figure 17

Installing the EQ card

EQUALIZER CARD 502B

6. Place included label on input card.
MPEDANCE 25K OHMS EACH LEG TO GROUND (TOTAL 50K OHMS BALANCED)

Figure 18

Attaching labels
502A E Q CARD M8 EQ CARD M32 EQ CARD

502B E Q CARD 9702 H F

802 EQ CARD 9702 M F
7. Set the EQ BI-AMP/FULL RANGE switch and the STEREO/MONO switch. See sections 5.3.3 and 5.3.4 for additional details regarding these features.

Figure 19

Setting the switches

FR EE SP AC E

BU SI NE SS

MU SI C

SY ST EM
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If your Bose loudspeakers require active equalization, follow these steps to install them in the Model 2150: 8. Reconnect the ribbon cable.

Figure 20

Reconnecting ribbon cables
9. Install the input card.

Figure 21

100V Com 25V 35V 4 50V 8 70V
Installing the input card

QUENCE

ND RCV

COM CH2 CH1 +5V

SEND RECV
10. Reconnect input card screws.

Figure 22

Reconnecting the screws
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If your Bose loudspeakers require active equalization, follow these steps to install them in the Model 2150: 11. Connect all input connections to the amplifier, and line cord to the wall.

Figure 23

Connect all inputs and power cord

Figure 24

Turn the amplifier on
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5.2 Input wiring

You can use 14" phone jacks, XLR connectors, or quick connect terminal block connectors for the input signal with either unbalanced 2-conductor or balanced 3-conductor cables. Use shielded coaxial cable to conduct the signal from the source (mixer, equalizer, CD player) to the amplifier.

5.2.1 Balanced operation

For the 14" phone jack, use a 3-conductor TRS 14" phone plug. The tip of the plug carries the + (hot, non-inverting) side of the signal. The ring carries the (low, inverting) side of the signal. The sleeve is ground (see Figure 25).

Figure 25

14" phone jack balanced input connection
Tip + Sleeve (shield) Ring -

From Channel 2

From Channel 1
For the XLR jack, use a male XLR connector. Pin 2 carries the + (hot, non-inverting) side of the signal. Pin 3 carries the (low, inverting) side of the signal. Pin 1 is ground (see Figure 26).

Figure 26

XLR balanced input connection

GND(shield)

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5.0 Installation 5.2.1 Balanced operation (cont.)
For the quick connect terminal block, use the female connector provided. Pin 3 carries the + (hot, non-inverting) side of the signal. Pin 2 carries the (low, inverting) side of the signal. Pin 1 is ground (see Figure 27). When using the standard input module for either amplifier, you can reverse the polarity of the balanced inputs by changing four jumpers located on the input board, just behind the input connectors.

Figure 27

Quick connect terminal block balanced input connection
5.2.2 Unbalanced operation
For the 14" phone jack, use a 2-conductor (tip-sleeve) 14" phone plug. The tip of the plug carries the signal and the sleeve is ground. The ring connection in the jack is automatically grounded by the sleeve (see Figure 28).

The STEREO/MONO switch is located on the input board behind slot #2 of the standard input module (see Figure 31). For dual-mono operation, move the STEREO/MONO switch all the way to the left to the DUAL/MONO setting. Connect the input signal to CH 2 input (CH 1 input becomes disabled). Connect the speakers to the speaker outputs on the amplifier just as for normal stereo operation. Both speaker outputs will carry the signal connected to the CH 2 input.
Note: When changing settings, always disconnect the power cord.
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5.3 Output wiring (cont.)

5.3.3 Stereo/Mono switch

This switch selects between NORMAL STEREO (normal stereo), DUAL MONO (dual mono), or BRIDGED MONO (bridged mono) operation. It is located on the motherboard of the input module. For NORMAL STEREO operation, use CH 1 and CH 2 inputs. For DUAL MONO or BRIDGED MONO operation, use CH 2 input only. See the section on bridged operation for more information.

Figure 31

Stereo/Mono switch

NORMAL

DIAL MODE STEREO/MONO SWITCH
BRIDGE EQ BI-AMP FULL RANGE SWITCH

EQUALIZER FOR CHANNEL 1

EQUALIZER FOR CHANNEL 2
5.3.4 EQ BI-AMP/FULL RANGE switch
This feature allows the same equalizer card to be used for full range output and bi-amp output. This switch is located on the motherboard of the input module. The module must be removed to access this switch. To select the high frequency output from both equalizer cards, engage this switch (HF ONLY position). This feature is useful when configuring two or more amplifiers and a 502B module.

Figure 32

EQ BI-AMP/FULL RANGE switch

BRIDGE

EQ BI-AMP FULL RANGE SWITCH
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5.0 Installation 5.3.5 Stereo operation
The STEREO/MONO switch is located behind slot #2 of the standard input module (see Figure 31). For stereo operation move the STEREO/MONO switch to the middle position. Connect your stereo input signal to CH 1 and CH 2 inputs.
Note: This is the default setting on the input card.
Output wiring: Connect the positive (+) to the desired setting on CH 1 (4, 8, 25V, 35V, 50V, 70V, 100V); then connect the negative (-) to the Common (COM). Next, connect the positive (+) to the desired setting on CH 2 (4, 8, 25V, 35V, 50V, 70V, 100V); then connect the negative (-) to the Common (COM).

Appendix B: Specifications
Specifications for Bose Model 2150 Commercial Power Amplifier
Power Output Continuous average output power, both channels driven:
150W per channel into 4 at 1kHz with 0.5% or less THD 150W per channel into 8 at 1kHz with 0.5% or less THD 150W per channel at 100V into a 67 load at 1kHz with 0.5% or less THD 150W per channel at 70V into a 33 load at 1kHz with 0.5% or less THD
Bridged mono operation: 300W at 8 with 0.5% or less THD 300W at 16 with 0.5% or less THD 300W at 100V into a 33 load at 1kHz with 0.5% or less THD 300W at 70V into a 16 load at 1kHz with 0.5% or less THD Power consumption: 60W or less at idle, no input, maximum gain 125W with musical program at 18 rated power 250W with musical program at 13 rated power Power requirements: 485W @ 4 with a sinewave test tone, rated continuous power at maximum gain 500W @ 8 with a sinewave test tone, rated continuous power at maximum gain 525W @ 70V with a sinewave test tone, rated continuous power at maximum gain 525W @ 100V with a sinewave test tone, rated continuous power at maximum gain Net weight 35 lbs. ( 15.9 kg) Shipping weight 38 lbs. ( 17.2 kg)
Output configurations Audio output transformer taps per channel: 100V, 70V, 50V, 35V, 25V, 8, 4 Dynamic headroom 1.2 dB Full power bandwidth 30Hz to 20kHz @ 0.5% THD Frequency response 30Hz to 20kHz (-3dB) Channel separation >80dB @ 1kHz Input impedance 50k balanced; 25k unbalanced Sensitivity 0.775V for rated power @ 1kHz Maximum input + 20dBu (7.75 V)
Specifications for Bose Model 2150 Commercial Power Amplifier (cont.)
IM distortion 0.2% THD <0.5% rated power, <0.2% 1/8 rated power Signal - to - noise ratio >95dB A-weighted below full power bandwidth CMRR >80dB @ 1kHz Power requirements USA/Canada: 120V ~ 50/60 Hz, 600W International: 220-240V ~ 50/60 Hz, 600W Japan: 100V ~ 50/60 Hz, 600W Fusing/protection Mains internally fused. Amplifier thermal and short circuit protection Display 19 LED indicators per channel 1 amber NETWORK, 1 amber STANDBY, 2 green READY, 2 red THERMAL, 1 red PROTECT, 2 amber SIGNAL, 2 green -20dB, 2 green -12dB, 2 yellow -6dB, 2 red CLIP Size (H x W x D) 3.5"H x 19"W x 16"D (8,9cmH x 48,3cmW x 40,1cmD)

Bose Corporation

2002 Bose Corporation, The Mountain, Framingham MA 01701-9168 USA 264080 AM Rev.00 JN20950