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The amplifier design incorporates an unregulated power supply for increased
dynamic headroom efficiency. The output stages of the Linear Power™452i
amplifier will deliver a significant increase in power into 2-ohm stereo loads.
Amplifier reliability is accomplished by the amplifier operation level being set at
approximately 50% of output transistors' rated power handling, even at this lower
impedance load. The 452i
channel, which allows the amplifier to bridge without the use of and external
bridging device such as a pre-amp or crossover. This feature will also allow the
amplifier to play in the channel mode.
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.
OVERSIZED FUSES IS DANGEROUS AND WILL VOID THE WARRANTY!
See specifications for proper fuse size. Do not install power fuse until amplifier
installation is complete.
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 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.
T
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MODEL 452i
(1989-MSRP $250.00)
OWNER'S MANUAL AND
INSTALLATION GUIDE
TECHNICAL DESCRIPTION
incorporates inverting capabilities on the right
©
WIRING
© 2008 Linear Power, Inc. - ALL RIGHTS RESERVED
LINEAR POWER™ is a trademark of Linear Power, Inc.
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WARNING: USING
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Summary of Contents for Linear Power 452i
- Page 1 INSTALLATION GUIDE TECHNICAL DESCRIPTION The amplifier design incorporates an unregulated power supply for increased dynamic headroom efficiency. The output stages of the Linear Power™452i © amplifier will deliver a significant increase in power into 2-ohm stereo loads. Amplifier reliability is accomplished by the amplifier operation level being set at approximately 50% of output transistors' rated power handling, even at this lower impedance load.
- Page 2 GMA-5, 5-amp fuse per channel. Some later model amps may use an ATC 5-amp fuse. IMPROPER FUSING WILL DAMAGE YOUR AMPLIFIER! 2-Channel Stereo Operational Diagram © 2008 Linear Power, Inc. - ALL RIGHTS RESERVED LINEAR POWER™ is a trademark of Linear Power, Inc.
- Page 3 Follow the polarity of the strip as described in the section above. A second set of satellites may be added for 2-ohm operation. 3-Channel Operational Diagram © 2008 Linear Power, Inc. - ALL RIGHTS RESERVED LINEAR POWER™ is a trademark of Linear Power, Inc.
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Page 4: Bridged Mono Operation
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. © 2008 Linear Power, Inc. - ALL RIGHTS RESERVED LINEAR POWER™ is a trademark of Linear Power, Inc. -
Page 5: General Troubleshooting
ATC-5 style, 5-amp fuse. Check all speaker wiring, or the speaker to insure against shorts, also check for proper speaker impedance. Remember, the fuse did not fail without reason! © 2008 Linear Power, Inc. - ALL RIGHTS RESERVED LINEAR POWER™ is a trademark of Linear Power, Inc. -
Page 6: Service Or Repair
3 4 5 5 L A N EL 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 © 2008 Linear Power, Inc. - ALL RIGHTS RESERVED... -
Page 7: Specifications
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 © 2008 Linear Power, Inc. - ALL RIGHTS RESERVED...