RetroSound SUB-8100 Active Bass subwoofer Instruction Sheet

Application: Any 12 Volt System

RetroSound

®

SUB-8100 Active Bass Subwoofer

Tools Needed

INSTRUCTION SHEET

Part Number

119-202 part Includes

1 - SUB-8100 subwoofer

4 - Mounting Brackets

1 - Wire & Wire Harness

1 - Remote Bass Control

18 - Installation Hardware

Adhesive tape

(for alternate installations where mounting brackets can’t be used) professional, or contact us via at [email protected] or call 909-364-1372 | 888-325-1555.

IMpORTANT! This device is a high-power audio amplifier intended for installation in vehicles with a 12-Volt negative ground electrical system. may cause damage to the amplifier or electrical system.

IMpORTANT! Disconnect the negative (-) battery cable before beginning to the starter mounting bolt or engine block and another to the vehicle chassis using at least a #8 gauge wire. Also make sure the alternator connections are secure and free from corrosion, rust or dirt.

amplifier in an inverted or upside down position. Select a mounting cables, fuel lines, fuel tanks, hydraulic lines or other vehicle systems or components.

MAMotorworks

Midamotorworks blog.autotainment.com

17082 N. US Hwy 45, p.O. Box 1368, Effingham, IL 62401

800.500.1500 • Worldwide: 217.540.4200 • FAX: 217.540.4800

www.mamotorworks.com • [email protected]

©Mid America Motorworks, Inc. All rights reserved.

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RetroSound

®

SUB-8100 Active Bass Subwoofer

(cont.)

STEp 1. Affix the Mounting Brackets to the bottom of the amp using the enclosed Mounting Bracket Bolts. (1A, 1B & 1C)

STEp 2. Use the enclosed Sheet Metal Screws to mount the powered sub to the desired location.

STEp 3. Refer to “End Panel Controls/Connections” for connection instructions.

End panel Controls/Connections

INSTRUCTION SHEET

Part Number

119-202

1A

1. pHASE: Adjust subwoofer polarity between 0 (normal) and 180 degrees

(reverse). At 0, the subwoofer is “in-phase” with the other speakers, meaning the subwoofer moves in/out along with the speakers. When reversed, the subwoofer moves in when the speakers move out. Reversing polarity may be useful depending on subwoofer placement and acoustics.

2. FREQ: The Low Pass Filter controls adjust the crossover point. The typical crossover setting is between 60Hz and 80Hz. Since musical tastes vary, you should play music that you would normally listen to in your vehicle, using the above settings as a starting point. If necessary, we suggest setting the crossover point by ear.

3. REMOTE LEVEL CONTROL INpUT: Plug included remote bass level control into this port

4. GAIN: The input level control (GAIN) matches the output of your radio to the input of the amplifier. To adjust the input gain after install, begin by turning the control all the way to the left. Play your input source (CD player, etc.), with the bass and treble settings flat, then slowly increase the volume until you begin to hear distortion. Adjust the volume back down until the distortion is no longer heard. Next, increase the amplifier GAIN slowly until you begin to hear distortion. Adjust the GAIN back down until the distortion is no longer heard. Your radio and amplifier levels are now matched.

1B

1C

Toll Free: 800.500.1500 • Worldwide: 217.540.4200 • www.mamotorworks.com • [email protected]

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RetroSound

®

SUB-8100 Active Bass Subwoofer

(cont.)

5. LOW INpUT L: White RCA connector for low level input.

LOW INpUT R: Red RCA connector for right low level input.

6. pOWER: The power LED provides a blue indication that the amplifier is turned on.

7. MAIN HARNESS: This harness contains power, ground, remote turn on and High level input speaker leads if your radio doesn’t have RCA connections you can use these leads to connect to your speaker wires so the amp receives your source signal.

NOTE: Connect only the low level (RCA) or high level input. Do not connect both at the same time.

INSTRUCTION SHEET

Part Number

119-202

Specifications

Power Supply

Voltage: 10.5 - 16.0 VDC

Idling Current (On): 0.4 A

Idling Current (Off ): <0.002 mA

Amplifier Stage

Output Power @14.4 V:

100 Watts RMS / 200 Watt Max

S/N Ratio: > 100 dB

Input Sensitivity: 100 mV - 6.0 V

Frequency Response: 50 Hz - 160 Hz

Total Harmonic Distortion: 0.1%

Filters

Low Pass Filter/Slope:

50 Hz - 160 Hz / 12dB

Phase Control (variable): 0-180

Other Specifications

Fuse: 10A x 1

Size: (W x H x L): 9.2 x 2.75 x 13.74 inches / 350 x 70 x 235 mm

Weight: 9 lbs / 4.08 Kg

Toll Free: 800.500.1500 • Worldwide: 217.540.4200 • www.mamotorworks.com • [email protected]

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RetroSound

®

SUB-8100 Active Bass Subwoofer

(cont.)

INSTRUCTION SHEET

Part Number

119-202

Troubleshooting guide

problem

Powered subwoofer will not turn on

(no Power on LED indicator)

No sound heard from unit but

LED power indicator is on

Unit blows fuses

Engine noise

Distorted audio output

Low audio Output

Weak bass response possible Cause

12 Volt Batt + wire not connected or incorrect voltage/remote wire not connected or incorrect voltage

Ground wire not connected

Fuse on Batt + is blown

Volume turned all the way down

Gain control on sub amp is turned down

Input signal not connected

Action to Solve problem

Check all connections for proper voltage with a volt meter. Voltage range:

12-15 volts.

Check ground connection.

Replace blown fuse.

Increase head unit volume/check volume level on head unit.

Increase gain control on end panel of sub amp.

Check low level inputs for proper connection.

Incorrect fuse rating Use fuses with correct 10 amp rating.

Batt + wire is touching chassis ground Check for pinched or shorted wire.

On-board subwoofer defective Check/replace subwoofer.

Not +12 Volts/car battery not connected Make sure the vehicle is + 12 volts and that the car battery is correctly connected to the vehicle.

Remote lead shorting Check the Remote lead to make sure it is not shorting out the amp.

Bad ground connection

Signal ground loop or RFI interference

Incorrect input signal type or input level is too high

Make sure the Sub-8100 unit is grounded to clean bare metal of the vehicle.

Re-route RCA cables from existing high current wiring.

Check connections and reduce/adjust input level.

Poor bass response Adjust phase control.

Check polarity of speaker wires if using high level input.

Incorrect input signal type or input level too low

Check connections and increase/adjust input level.

Low frequency output is out of phase Adjust phase control.

Check crossover adjustment.

Toll Free: 800.500.1500 • Worldwide: 217.540.4200 • www.mamotorworks.com • [email protected]