Linear Power 4503IQ Owner's Manual And Installation Manual

PDF Download

Document

F O R T H E L O V E O F M U S I C

™

OWNER'S MANUAL AND

INSTALLATION GUIDE

4503IQ

(1995-MSRP $559.00)

4-CHANNEL MULTI-CONFIGURATION AMPLIFIERS

INTRODUCTION

The 4503IQ is a multi-channel amplifier providing both power and flexibility. The

4503IQ is rated at 50 watts per channel into both 2 and 4-ohm loads. The amp has an unregulated driven power supply for greater dynamic headroom. Each of the four channels in this amplifier has its own dedicated 12dB/octave crossover.

The mode of operation for the amplifier is user selectable, for one of three possible configurations - full range , bi-amp , or satellite . In the full range mode, all four channels cover the entire music spectrum. The bi-amp mode dedicates the front channels for a high pass output and the rear channels become the subwoofer output, electronically crossed over at 80Hz. In the satellite mode, both front and rear outputs are high pass outputs with the low pass RCA outputs active providing subwoofer information for a separate amplifier. These are also crossed over at 80Hz in the 4503IQ.

The outputs of this amplifier have inverted right channel outputs allowing the user to bridge the speaker outputs. Using a mixed stereo/mono configuration on both front and rear outputs offers a possibility of six-channel operation with this amplifier.

INSTALLATION

WIRING: Disconnect battery ground cable before making any power connections.

RED WIRE: +12 volts - Connect directly to battery positive terminal and should be fused within 18 inches of battery and another fuse where the connection to the amplifier is made. Remember to use the proper size fuses. Do not install power fuse until installation of amplifier is complete.

WARNING: USE OF OVERSIZED FUSES IS DANGEROUS AND WILL

DAMAGE YOUR AMPLIFIER.

LINEAR POWER™ is a trademark of Linear Power, Inc.

BLACK WIRE: Negative ground - Connect to clean unpainted metal surface on car chassis.

RED/WHITE WIRE: Remote turn on lead requires +12 volts; connect to power antenna lead from radio. When this is not available you may connect to a +12 volts wire that is on with the ignition on or in the accessory position.

RCA CONNECTIONS: Connect with quality-shielded patch cords from source, crossover, or any other sound processor.

MODE SELECTION: A switch, accessible through the plug on the bottom of the amplifier, selects one of the three operating modes for the amplifier. Position A

(satellite mode): both front and rear outputs are high pass (80Hz and above) in the 4503IQ . The subwoofer RCA output is active with subwoofer information for another amplifier being supplied, 80Hz and below in the 4503IQ.

Position B (biamp configuration): the front outputs are high pass, 80Hz and above in 4503IQ and the rear outputs become subwoofer outputs (80Hz and below). Position C is full range operation front and rear. NOTE: In all modes both front and rear inputs are required. You can use "Y" RCA connectors to accomplish this, if you are using only one RCA cable coming from the radio.

SPEAKER CONNECTIONS: The speaker connections are accomplished by connecting speaker wire to removable plugs. These plugs will accept up to a 12gauge speaker wire. Facing the plug while it is connected to the amplifier the polarity for both plugs in Left ( ), Left ( + ), Right ( ), Right ( + ) with the left plug being the front outputs and the Right being the rear outputs. The exception to this is when in Position B of the mode selector: the front speaker plug is your high pass output and the rear speaker plug is your low pass (or, subwoofer output).

MINIMUM OHM LOADS: Normal operation is 4 ohms per channel or 8 ohms mono. The amplifier will operate at 2 ohms per channel or 4 ohms mono but the following must be done: You must change the "power supply impedance matching connectors". Remove faceplate and bottom cover and locate toroid coil, just below it are two disconnects on taps marked "4" . Change them to "2" , replace cover and complete installation. Failure to change these connections can cause premature failure of your amplifier. NOTE: For speaker protection the

4253IQ has internal fuses. If there is no output check these fuses. Replace with the same size fuse (4 amp). Over fusing is easily detectable and will damage your amp.

GAIN ADJUSTMENT: There are two gain adjustments on the amplifier, one for front and one for rear. Follow these directions for both: Set the amp gain to minimum, turn the source up until it just starts to distort, then back down slightly.

This is the point where the output of the source is cleanest. Now adjust the amplifier gain up until it just starts to distort and back down slightly. This will allow the source and amp to reach maximum usable output at the same time.

LINEAR POWER™ is a trademark of Linear Power, Inc.

MOUNTING

1.The amplifier works best if it is kept as cool as possible. Mount in a position that allows air to flow freely through the fins. Be sure there is ample space above the amplifier to avoid trapping heated air rising from the amplifier. The amplifier should not be mounted upside down. Avoid mounting any amplifier in the dash or on the firewall to avoid noises being radiated directly onto the case.

2.The case of your amplifier is designed to act as a noise shield. To maintain this protection, be sure the metal case of the amp does not touch the metal of the car. Do not remove or damage the rubber grommets, which provide electrical insulation and vibration isolation.

OPERATION / ADJUSTMENT

For any system to operate at minimum distortion with minimum noise and still reach full power output, the equipment should be aligned to operate at the same point on the distortion curve at the same time. In a basic system, using a single amplifier, set the amp sensitivity adjustment to minimum, turn the deck up until it just starts to distort, then back down slightly. This is the point where the output of the deck is cleanest. Now, bring the sensitivity control of the amp up until it just starts to distort, and back it down slightly. This will allow the amp and the deck to reach maximum usable output at the same time.

GENERAL TROUBLESHOOTING

NO SOUND

Check all connections. Check main power fuses. Check accessory fuse. With a trouble light or meter, be sure +12v is present at the amplifier on the power wires and the red/white turn-on wire. Check for a good ground connection. Check by substitution, or other method, for proper operation of music source.

BLOWS FUSES check all connections to be sure power wires and speaker wires do not touch each other or ground. Re-check polarity of main power wires. Check impedance of speaker loads and setting of the internal power taps to insure proper match.

SHUTS OFF

As this amplifier is equipped with thermal and short circuit shut-down electronics, in the event of high ambient temperature or improper speaker impedances, the amp will turn itself off. To avoid damage to speakers, turn down the volume while waiting for the amp to turn itself back on. If this occurs repeatedly, use a fan to cool the amplifier and check for proper speaker loads and connections.

LINEAR POWER™ is a trademark of Linear Power, Inc.

SERVICE OR REPAIR

To obtain modification, service or repair, please contact our ONLY Authorized

LINEAR POWER™ Product Service Center :

T.I.P.S. INC.

3599 Old Brandon Road

Pearl, MS 39208

(601) 932-8477

E-mail: [email protected]

3 4 5 5 L A N E L L L A N E, P E A R L, M S 3 9 2 0 8 (6 0 1) 9 3 2 – 8 4 7 7

LINEAR POWER™ is a trademark of Linear Power, Inc.

™

SPECIFICATIONS

Rated output4/2 ohms

Rated THD 4 ohms

2 ohms

Damping factor 4 ohms

2 ohms

Signal to noise (Min/Max gain)

Channel separation (Min/Max gain)

Input sensitivity

Input impedance

Power Consumption

At Idle

4 ohms rated power

2 ohms rated power

Fuse rating

Dimensions HxWxL

4503IQ

4503IQ

50w/ch

.04%

.10%

280

150

100db/80db

78db/68db

150mV-5V

50Kohms

.5A

28A

35A

30A

2.25"x10.25"x9.25"

3 4 5 5 L A N E L L L A N E, P E A R L, M S 3 9 2 0 8 (6 0 1) 9 3 2 – 8 4 7 7

™

LINEAR POWER™ is a trademark of Linear Power, Inc.

Hello! I am an AI chatbot specifically trained to assist you with the Linear Power 4503IQ Owner's Manual And Installation Manual. I have thoroughly reviewed the document and can help you locate the exact information you need or explain the content in clear and simple terms. Whether you’re looking for guidance on specific features, troubleshooting steps, or general usage, feel free to ask your questions. The more details you provide about your concerns or needs, the more accurately and effectively I can assist you!

Assistant typing

Assistant terminated