GT 40 - Car stereo BOSTON ACOUSTICS - Free user manual and instructions
Find the device manual for free GT 40 BOSTON ACOUSTICS in PDF.
| Product Type | Car Stereo |
| Brand | Boston Acoustics |
| Model | GT 40 |
| Color | Black |
| Dimensions (DIN) | Single DIN (approx. 7 x 2 inches) |
| Weight | 1.5 lbs (0.68 kg) |
| Power Supply | 12V DC (negative ground) |
| Maximum Power Output | 50W x 4 channels |
| RMS Power Output | 22W x 4 channels (per DIN standard) |
| Tuner Bands | AM/FM |
| CD Player | Yes |
| AUX Input | 3.5mm front or rear |
| USB Port | Yes (front panel) |
| Bluetooth | Yes (handsfree calling and audio streaming) |
| Remote Control | Included (wired or wireless) |
| Display Type | LCD with white backlight |
| Preamp Outputs | 2 pairs (front/rear) at 2V |
| Equalizer | 3-band EQ (bass, mid, treble) |
| Clock | 12/24 hour display |
| Security Code | Anti-theft with user-set code |
| Installation Size | Single DIN |
| Compatibility | Most vehicles with standard DIN slot |
| Warranty | 1 year limited |
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USER MANUAL GT 40 BOSTON ACOUSTICS
4-Channel, High-Current/High-Power Amplifier
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Line drawing of a Boston electronic device casing with ventilation grilles and ports (no text or symbols on the body)Boston
Boston Acoustics
Table of Contents
Parts List 3
Features and Specifications 3
Control Functions 4
Control functions (cont.) 5
Control functions (cont.) 6
Mechanical Functions 6
Control cover removal & reinstallation 6
Multi-position mounting feet 6
Mechanical functions (cont.) 7
Amplifier linking 7
Wire connection 7
Fuses 7
General Installation Precautions 8
Before you install 8
Battery & charging system 8
Wire routing 8
Installation—Amplifier Mounting 9
Choose the mounting location 9
Installation—amplifier mounting (cont.) 10
Passenger & trunk compartment mounting 10
Installation—Fuses & Wiring 10
Amplifier fuses 10
Wire gauge 10
Installation—fuses & wiring (cont.) 11
Power/B+ & power/ground connection 11
Remote input connection 11
Speaker output connection 11
Installation—fuses & wiring (cont.) 12
Mono subwoofer operation 12
Setup Tuning—Full-range Speakers 12
Music 12
Front & rear sensitivity controls 12
Front & rear crossover controls 12
Setup tuning—full-range speakers (cont.) 13
Head unit 13
Volume
Front input sensitivity control 13
Front crossover controls 13
Setup tuning—full-range speakers (cont.) 14
Q-factor adjustments 14
Rear input sensitivity & crossover controls 14
Setup Tuning—Rear Fill Speakers & Subwoofers 14
Subwoofer level control 14
Rear input switch 14
Setup tuning—rear fill speakers & subwoofers (cont.) 14
Head unit 15
Volume 15
Rear input sensitivity control 15
Rear crossover control 15
Phase 15
System Examples 16,17
Amplifier Troubleshooting Guide 18
Contact and Warranty Information 19
Parts List
Included Hardware
(1) owner's manual
(1) female quick-connect terminal for remote input
(1) 2mm hex wrench (for speaker input)
(1) 3mm hex wrench (for power input)
(4) mounting screws
Features and Specifications
GT-40 Features
| 4-Channel, High-Current Amplifier | Continuously Variable Crossover and Q-factor Settings |
| 2Ω Bridge Stable Operation | Selectable Highpass Front Channels |
| Power Increase with Input Voltage Rise | Selectable Mono/Stereo Rear Highpass (Rear Fill) or Subwoofer Lowpass |
| Advanced Cooling Allows Varied Mounting Positions | |
| Adjustable Feet for Varied Mounting Surfaces | Selectable Rear Channel Signal Derived from Front Channel Input |
| Security Cover Protects Control Settings | Optional Remote Bass Control |
| Enhanced Switching Assignments |
GT-40Specifications
| 14.4VDC Power | |
| @ 4 Ohms 4x55W | |
| @ 2 Ohms 4x90W | |
| @ 4 Ohms (dual-mono) 2x190W | |
| @ 2 Ohms (dual-mono) 2x240W | |
| 12.6VDC Power | |
| @ 4 Ohms 4x45W | |
| @ 2 Ohms 4x70W | |
| @ 4 Ohms (dual-mono) 2x140W | |
| @ 2 Ohms (dual-mono) 2x190W | |
| 14.4VDC Multi-channel Power 2x55W (4 ohm), 1x240W (2 ohm) | |
| 12.6VDC Multi-channel Power 2x45W (4 ohm), 1x190W (2 ohm) | |
| Frequency Response (-3dB) 10Hz–95kHz | |
| Signal-to-Noise Ratio (A Weighted) >100dB | |
| Dimensions 2 | ^1/_4 × 14^1/_8 × 8^1/_8 " (57 x 358 x 225mm) |
Control Functions
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3 5 9 12 10 STUDIO RANGE INVERSE REAR L-R FRONT INPUT OFF ON HISIPASS 300 300+ Hz - - - 6 STUDIO MIND OFF ON L-R REAF INPUT L SUBWOUTPER LEVEL OFF ON FILTER 300+ Hz - - - INPUT SENSITIVITY 2.8+ V 0.3 0.95+ Q-QF 1.1 0.1 L-REAR INPUTS REMOTE SURWOUTPER LEVEL INPUT SENSITIVITY 2.8+ V 0.3 4 MOND MOND L L R FRONT SPEAKER OUTPUT REAR SPEAKER OUTPUT GND ILE-14.WDC
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1 2 STATUS ON SAFE 11 7 8 12 MIME FRONT SPEAKER OUTPUT L H MIME REAR SPEAKER OUTPUT L H 13.8-14.1/DC t+ GND① FRONT RCA Inputs
RCA cables marked "FRONT" from head unit or from other line level device should be connected here. Use both inputs (L & R) for stereo.
② FRONT Remote Input
Use the supplied FEMALE quick connector to connect the REMOTE trigger lead from the head unit to the amplifier. Amplifier turns "ON" when head unit is turned "ON." One FEMALE .210" connector is supplied with amplifier.
③ FRONT Input Switch
In the left position, the L & R inputs go to the FRONT L & R channels of the amplifier. In the right position, the L & R inputs go to the FRONT and REAR L & R channels of the amplifier.
④ FRONT and REAR Sensitivity
Turn control clockwise to increase the amplifier sensitivity to incoming signals. Turn control counterclockwise to decrease the amplifier sensitivity.
⑤ FRONT Highpass Crossover Controls
To use 12dB/octave crossover, move switch to right-hand position. Highpass crossover frequency is adjustable from 20Hz to 350Hz by rotary control. (Moving switch to left-hand position will bypass crossover functions.)
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1 + 2 I
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STEREO L-R FRONT INPUT SEND INPUT REAR
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INPUT SENSITIVITY 2.6 • 0.3 V S
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OFF ON HIGHPASS 350 200 Hz 20Control Functions (cont.)
⑥ "Q" Control
"Q" Control is active when the highpass crossover is engaged and is centered on the selected crossover point. The range of operation is 0.7–1.2.
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| t (tuned crossover frequency) | Value | | ----------------------------- | --------- | | 1.295707 | +1.6dB | | 0dB | 0dB | | -3dB | -3dB |
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0.95 1.2 Q/HP 0.7⑦ REAR RCA Inputs
RCA cables marked "REAR" from head unit or other line level device should be connected here. Use both inputs (L & R) for stereo.
⑧ REAR Remote Input
This remote input is parallel to the FRONT remote input and does not need to be connected for the amplifier to operate. Use either remote input to turn the amplifier on. Do not connect 12V accessories to this input.
⑨ REAR Input Switch
In the left position, the L & R inputs go to the REAR L & R channels of the amplifier. In the right (MONO) position, the inputs are summed. Use this setting when the REAR channels are used with a subwoofer.
⑩ REAR Crossover Controls
To use highpass 12dB/octave crossover, move left switch to upper position. To use lowpass 12dB/octave crossover, move left switch to lower position. Highpass and lowpass crossover frequencies are adjustable from 50Hz to 350Hz by rotary control. Move filter switch to "ON" position to engage.
⑪ Status LED Indicators
GREEN indicates the normal operating condition; the amplifier is "ON." GREEN and RED together are normal when the amplifier is first turned "ON"; RED will turn off after a few seconds. When both GREEN and RED remain on, the amplifier is in thermal shutdown condition. RED only indicates a fault condition, "SAFE."
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7 + 8 I
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STEREO MONO L-R REAR INPUT L
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HP LP OFF ON FILTER 200 350 Hz 50
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STATUS ON SAFEControl Functions (cont.)
⑫ Subwoofer Level Control Port
Switch should be set to "OFF" when control circuit is not installed, (see optional "subwoofer level control" owner's manual).
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OFF SN SUBWOOPER LEVEL cover panelMechanical Functions
Recessed RCA Inputs
The input jacks are recessed into the body of the amplifier to provide clearance in tight mounting locations.
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1 inch-1 inchControl Cover Removal & Reinstallation
The cover panel is secured with two (2) captive coin-slotted screws. Coin-slotted screws allow a coin edge to be used as a screwdriver to remove the panel.
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Simple line drawing of a door with a hanging weight and an arrow indicating rotation (no text or symbols)Multi-position Mounting Feet
The mounting feet are designed to slide in both directions to clear installation obstructions on the mounting surface.
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Simple line drawing of a device with three buttons and an arrow indicating bidirectional movement (no text or symbols)WARNING! Before driving the mounting screws through any surface, be sure of what is behind that surface. Check for the gas tank, brake lines, and any vehicle wiring harness.
Vents (Side & Rear)
The cooling vents must be kept clear of obstructions once the amplifier is installed. Failure to do this could lead to premature thermal shutdown or amplifier failure.
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upper side vent Boston lower side vent6
Mechanical Functions (cont.)
Amplifier Linking
The design of the side panels enables multiple amplifiers to be used together without additional hardware.
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Technical line drawing of two identical rectangular electronic devices with mounting holes and indicator lights (no text or symbols)Wire Connection
Amplifier accepts stripped wire directly into the terminal blocks. Speaker outputs accept 8-gauge, and the DC power and ground accept 4-gauge. Tighten with supplied hex wrenches.
Fuses
Amplifier accepts standard AT-style automotive blade fuses.
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FUSE 2 x 25AGeneral Installation Precautions
WARNING! Before driving the amplifier mounting screws through any surface, be sure of what is behind that surface. Check for the gas tank, brake lines, and any vehicle wiring harness. Never run wires outside or under the vehicle or where they could become broken or interfere with the safe operation of the vehicle.
Before You Install
Before you install the unit, disconnect the negative (−) battery cable in the engine compartment of the vehicle. Doing so will prevent damage to both the electrical system of the vehicle and the amplifier during installation.
Battery & Charging System
In order for the amplifier to function correctly, the electrical system of the vehicle should be professionally checked for overall electrical capacity. When used, the amplifier will increase the demand on the battery and alternator. Therefore both should be thoroughly evaluated before installing the amplifier to ensure they are in normal operating condition and able to handle the increased demand the amplifier will present to the vehicle's electrical system.
Wire Routing
Do not run the power wire near any low-level signals or audio cables such as the RCAs from the head unit. (Noise can be introduced into the amplifier when this occurs.) It is helpful to diagram the wire layout first before any installation is attempted.
Installation—Amplifier Mounting
Choose the Mounting Location
Plan your installation so that the amplifier is mounted where adequate ventilation is available.
Never mount an amplifier in the engine compartment of a vehicle!
WARNING! Before driving the mounting screws through any surface, be sure of what is behind that surface. Check for gas tank, brake lines, and any vehicle wiring harness.
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13mm (1/2") 225mm (87/8")
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57mm (2½") 358mm (14½") -Installation—Amplifier Mounting (cont.)
Passenger & Trunk Compartment Mounting
If the amplifier is mounted under a seat, be sure that the vents do not become blocked. Do not allow seat padding or other obstructive material to press down on the amplifier.
All Boston GT amplifiers have top panel controls. If the amplifier is mounted under a seat, position the amplifier so the cover panel can be removed with the seat forward or back to allow adjustment of the audio settings.
When mounting in a trunk, choose a location that will be protected from sliding cargo or other materials. Mount the amplifier to solid surfaces only. Do not mount to plastic trim panels. Do not mount the amplifier with Velcro, double-stick tape, or by wedging into position. Amplifier should be mounted using the movable mounting feet and the provided mounting screws.
Installation—Fuses & Wiring
Amplifier Fuses
Although the amplifier has internal fuses, additional fusing should be provided at the battery on the positive (+) power wire going to the amplifier. An inline fuse should be installed at no more than 18" (46cm) on the positive (+) power wire. The rating of the inline fuse should equal the value of the internal fuses of the amplifier if only the amplifier is connected to this wire. If other devices are connected to this wire, the fuse value should be of sufficient capacity to handle the demand.
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FUSE 2 x 15AWire Gauge
The amplifier accepts up to 4-gauge stripped wire at the DC power and ground input terminals, and 4-gauge is recommended. Wire runs should be kept to the minimum practical length.
Installation—Fuses & Wiring (cont.)
Power/B+ & Power/GND Connection
Strip approximately 58 " (16mm) of insulation. The positive (+) power wire is installed into the amplifier terminal marked "B+." The negative (−) wire is installed into the terminal marked "GND." The ground wire should be as short as possible and connected directly to the chassis of the vehicle. Make sure that the chassis connection point is free of rust, grease, dirt, paint, and other materials that may insulate the ground wire from making proper connection. Tighten the B+ and GND terminals with the supplied 3mm hex wrench to secure the wire into the terminals. If the power wire must be routed through a drilled or existing hole, use a nylon panel grommet to prevent fraying the wire insulation. Failure to do so could lead to an electrical short if the wire insulation is worn through and the power wire is shorted to ground.
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Simple line drawing of a cable inside a circle, showing a wire and a gap (no text or symbols)Strip 5/8" (16mm)
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B+ GND 12.6-14.4VDCRemote Input Connection
Use the supplied FEMALE slide connector to connect the REMOTE trigger lead from the head unit to the amplifier. Crimp connector to wire from head unit that controls remote turn-on (refer to head unit owner's manual). Once the slide connector is crimped into place, carefully push connector onto recessed male REMOTE terminal adjacent to the RCA Input pair. Only one (1) remote turn-on terminal should be connected.
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Diagram showing a plug inserted into a device with two circular ports, connected to a cable (no text or symbols present)Speaker Output Connection
Prepare each wire by stripping approximately 58 " (16mm) of insulation. The positive (+) speaker wire is installed into the amplifier terminal marked "SPEAKER OUTPUT" / "+." The negative (−) speaker wire is installed into the amplifier terminal marked "SPEAKER OUTPUT" / "-" Tighten the "Speaker Output", "+" and "-" terminals with the supplied 2mm hex wrench to secure the wire into the terminals. If the speaker wires must be routed through a drilled or existing hole, use a nylon panel grommet to prevent fraying the wire insulation. Failure to do so could lead to an electrical short if the wire insulation is worn through and the speaker wires are shorted to ground.
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MONO L R FRONT SPEAKER OUTPUT
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MONO L R REAR SPEAKER OUTPUTInstallation—Fuses & Wiring (cont.)
Mono Subwoofer Operation
If the amplifier is to be bridged and used with a subwoofer connected to the REAR channels, use the "SPEAKER OUTPUT" terminals marked for mono use.
WARNING! Subwoofer impedance must not fall below 2 ohms when in MONO mode.
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2-ohm minimum + MONO - + L - + R - REAR SPEAKER OUTPUTSetup Tuning—Full-range Speakers
1) Music
The material chosen for head unit/amplifier system setup must be both clear in recording quality and dynamic in amplitude. Many audiophile "test" discs have musical tracks with both of these characteristics and should be used.
2) FRONT & REAR Sensitivity Controls
Turn controls all the way counterclockwise (minimum position). In this position, the amplifier will be less sensitive to the input signal from the head unit.
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INPUT SENSITIVITY 2.6 + 0.3 V 53) FRONT & REAR Crossover Controls
Crossovers should be turned off during this phase of set-up. Move the HIGHPASS and FILTER switches to the "OFF" position—with these settings, full-range signal is sent to the FRONT & REAR speaker outputs.
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OFF ON HIGHPASS 200 350 Hz 20FRONT crossover control
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HP OFF ON LP FILTER 350 200 Hz 50REAR crossover control
Setup Tuning—Full-range Speakers (cont.)
4) Head Unit
The head unit should have all controls such as bass, treble, balance, and fader set to the flat or centered position. The volume control should be at the minimum setting. If the head unit has any equalization or bass management features such as boost, they should be defeated at this time. Turn head unit on, and verify that the GREEN status LED is lit on the amplifier.
5) Volume
With the chosen musical track playing, turn the head unit volume control up until the maximum level of undistorted signal is heard from the speakers. (For most head units, this will be near the end of the volume control range.)
WARNING! A distorted signal from the head unit sent to the amplifier can cause loudspeaker failure at higher listening levels!
6) FRONT Input Sensitivity Control
Slowly rotate control clockwise until maximum undistorted playing level is heard from the speakers. Listen closely for bottoming from the speakers. If detected, rotate FRONT Input Sensitivity counterclockwise until it is eliminated.
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INPUT SENSITIVITY 2.6 | Category | Value | |---|---| | V | 0.2 | | 5 | 5 |7) FRONT Crossover Controls
To achieve higher undistorted playing levels from the front speakers, the FRONT crossover must be engaged. Rotate crossover control fully clockwise. The high-pass crossover point is now set at 350Hz. Rotate FRONT "Q" Control fully counterclockwise. Move crossover switch to the right (ON) position.
Slowly rotate FRONT input sensitivity control clockwise until maximum undistorted playing level is heard from the speakers. Listen closely for bottoming from the speakers. If detected, rotate FRONT input sensitivity control counterclockwise until it is eliminated. Slowly rotate FRONT highpass crossover control counterclockwise while listening for bottoming. You are lowering the
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OFF ON HIGHPASS 200 350 Hz 20crossover point, which means that more bass signal is being sent to the speakers. If bottoming is detected, Rotate FRONT input sensitivity control counterclockwise until it is eliminated and/or rotate the FRONT highpass crossover control clockwise to raise the crossover point.
Setup Tuning—Full-range Speakers (cont.)
8) FRONT "Q" Control
Once the FRONT highpass crossover point has been determined, use the FRONT "Q" control to increase the bass information centered around the crossover point.
Setting the front "Q" control is done in conjunction with setting the levels on the input sensitivity and highpass crossover frequency controls. You may find while setting the "Q" that bottoming may be detected in the front speakers; lowering the "Q" input sensitivity or raising the highpass crossover point will eliminate this. Minor adjustments to each setting are required to fine-tune the system.
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0.95 1.2 Q/HP 0.7Setting the "Q" is a subtle process. It is recommended that the "Q" setting be left in the 0.7 position and adjusted only after the input sensitivity and highpass crossover ranges are known. Small adjustments to the "Q" setting are all that are required to fine-tune the system.
9) REAR Input Sensitivity & Crossover Controls
Setting levels for the rear channels proceeds the same as for the front except for the elimination of the "Q" control settings. Crossover selector switch must be set to "HP" and filter switch must be set to "ON." If the loudspeaker being used is capable of full-range operation, filter should be set to "OFF."
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HP OFF ON LP FILTER 200 350 Hz 50Setup Tuning—Rear Fill Speakers
You may set the rear channels for summed mono operation from the L & R REAR RCA inputs by setting the REAR INPUT switch to the right-hand MONO position and then connecting the L & R REAR loudspeakers normally as you would for regular stereo operation. This configuration is beneficial for rear fill in some applications.
Setup Tuning—Subwoofers
1) SUBWOOFER LEVEL Control
Refer to subwoofer level control in owner's manual. If the control is not used, SUBWOOFER LEVEL switch must be set to "OFF."
2) REAR Input Switch
Move switch to the right-hand (MONO) position, the inputs are summed to mono. Connect the subwoofer to the REAR SPEAKER OUTPUT terminals marked for MONO operation. NOTE: Subwoofer impedance is 2 ohms minimum.
Setup Tuning—Subwoofers (cont.)
3) Head Unit
The head unit should have all controls such as bass, treble, balance, and fader set to the flat or centered position. The volume control should be at the minimum setting. If the head unit has any equalization or bass management features such as boost, they should be deactivated at this time. Turn head unit on, and verify that the GREEN status LED is lit on the amplifier.
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STATUS ON SAFE4) Volume
With the chosen musical track playing, turn the head unit volume control up until the maximum level of undistorted signal is heard from the speakers. For most head units, this will be at the end of the volume control range.
WARNING! A distorted signal from the head unit sent to the amplifier can cause loudspeaker failure at higher listening levels!
5) REAR Input Sensitivity Control
Turn controls all the way counterclockwise (minimum position). In this position, the amplifier will be less sensitive to the input signal from the head unit. Slowly rotate this control clockwise until maximum undistorted playing level is heard from the subwoofers. Listen closely for faults such as bottoming from the subwoofer. If fault is detected, rotate REAR input sensitivity control counterclockwise until fault is eliminated. At this point, the maximum undistorted subwoofer playing level has been defined.
6) REAR Crossover Control
Move the selector switch to "LP" and the FILTER switch to "ON." In this setting, lowpass signal is sent to the REAR speaker outputs.
7) PHASE
Subwoofer phase is relative to the front loudspeakers. Correct electrical phase does not always mean correct acoustic phase. Swap positive (+) and negative (-) connections at the speaker outputs where the subwoofer is connected to the amplifier. It is beneficial to listen to the subwoofer connected in both phase conditions. The subwoofer should be left in the condition in which the strongest bass response is noted.
System Examples
System A—Full-range Front with Full-range Rear
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Diagram of an electronic device connection showing power, ground, fuse, and terminal connections with labeled components.System B—Full-range Front with Rear Fill
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Electrical wiring diagram showing connections between a power connector, switch, and terminal blocks with labels for ground and fuse.System Examples (cont.)
System C—Main Speakers with Single Subwoofer (2Ω)
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Diagram showing connections between audio equipment and terminal devices, including a fuse and battery terminal with labeled components.System D — Main Speakers with Parallel 4Ω Subwoofers (2Ω load)
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Diagram of a device connection setup showing connections to front panel, display, and terminal with labeled components like fuse and ground connection.Amplifier Troubleshooting Guide
Status LEDs on Amplifier not Lit—Head Unit (Source) Turned "ON"
Verify
Remote turn-on wire from source to amplifier has proper voltage
Power (B+) connections at amplifier, terminal blocks, and battery are secure
Ground (GND) connections at amplifier and vehicle chassis are secure
Battery B+ fuse is OK
Amplifier fuse is OK
B+ at battery and B+ at amplifier have proper voltage
Status LEDs Lit, no Output from Speakers—Speakers in Normal Operating Condition
Verify
High-level cables from speaker(s) to amplifier are securely connected
RCA cables from amplifier to source are securely connected
Sensitivity adjustment on amplifier is correctly adjusted
Engine Noise from Speaker(s)
Turn source "OFF"
Disconnect RCA cables at amplifier
If noise stops, check equipment & cables leading to amplifier
Verify RCA cables are of good quality with no breakage to internal shields
RCA cables from source to amplifier are not run alongside power
Amplifier Output Distorted—Music not Recorded with Intentional Distortion
Verify Source output to amplifier is not distorted
Amplifier input sensitivity is correctly adjusted
Amplifier Shuts Down, Red and Green LEDs are Lit—Amplifier is in Thermal Protection Mode
Verify
Amplifier is mounted with adequate air circulation around vents
Amplifier does not have obstructions blocking back or side panel vents
Amplifier is not mounted under carpet
Speakers meet correct impedance for application (mono or stereo hookup)
Amplifier Does Not Turn "ON", and Red LED is Lit—Amplifier not Connected to a Shorted Speaker
Verify Speaker crossover is not defective
High-level cables from speaker to amplifier are not shorted
Amplifier Does Not Turn "ON", and Red LED Lit—Speakers, Crossovers, and Cable are OK
Amplifier requires service
Contact and Warranty Information
Limited Warranty (US)
For one (1) year from the date of purchase, Boston Acoustics will repair for the original owner any defect in materials or workmanship that occurs in normal use, without charge for parts and labor—when purchased from an authorized Boston Acoustics retailer.
If an authorized Boston Acoustics retailer installs your amplifier, the warranty will be extended one (1) additional year. Installation of the amplifier must be noted on the original purchase receipt. The receipt must be presented at the time a warranty claim is made.
Your responsibilities are to use the system according to the instructions supplied, to provide safe and secure transportation to an authorized Boston Acoustics service representative, and to present proof of purchase in the form of your sales slip when requesting service.
Excluded from this warranty is damage that results from abuse, misuse, accidents, shipping, or repairs or modifications by anyone other than an authorized Boston Acoustics service representative.
This warranty is void if the serial number has been removed or defaced.
This warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
If Service Seems Necessary
First, contact the dealer from whom you purchased the amplifier. If that is not possible, write to:
Boston Acoustics, Inc. 300 Jubilee Drive Peabody, MA 01960 U.S.A., or your authorized Boston Acoustics distributor
We will promptly advise you of what action to take. If it is necessary to return your unit to the factory, please ship it prepaid. After it has been repaired, we will return it freight prepaid in the U.S.A. and Canada.
Boston
Boston Acoustics
www.bostonacoustics.com
300 Jubilee Drive
Peabody, MA 01960 U.S.A.
(978) 538-5000
Boston, Boston Acoustics, and the Boston logo are registered trademarks of Boston Acoustics, Inc.
© 2003 Boston Acoustics, Inc. All rights reserved. Specifications subject to change without notice.
P/N 042-001548-2
