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© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED 

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

 

 

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

 

4253IQ

 

(1995-MSRP $359.00)

 

 

OWNER'S MANUAL AND

 

INSTALLATION GUIDE

 

4-CHANNEL MULTI-CONFIGURATION AMPLIFIERS 

INTRODUCTION

 

The 4253IQ

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

 

4253IQ 

is rated at 25 watts per channel into both 4 and 2-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 

4253IQ.

 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 amplifier install is complete! 

WARNING: USE OF OVERSIZED FUSES IS DANGEROUS AND WILL 

DAMAGE YOUR AMPLIFIER. 

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