Question about Alpine New KTP-445U 4-channel Power Pack Amplifier

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How do I know if my Alpine KTU-445U amplifier is working.

I followed the wiring diagram - as poorly as it is, and connected all my speaker inputs and outputs correctly. I ran the yellow power wire to the battery and the 2 blue/white wires - one from the rear of the amp. and one from the front of the amp. together and connected to a powered accessory wire. I turned the power on and nothing! I connected the speaker outputs to another amp. and they work just fine. I'm not an electronics wizard, but it there some way to accurately determine if teh amp is bad?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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Shuttle83
  • 1139 Answers

SOURCE: Alpine pdx-1.1000

Hello Briankt69,

Ot two issues, First the AMP is going into a protection mode this means that it is drawing too much current. As netrecov said you need a capacitor, this will oppose the rapid current draw, by allowing the voltage to remain constant. However I would also sugget that you rewire the setup to manufatures specification and make sure that all grounds and supply leads are installed properly. Taking into mind the the 4awg wire has less cross sectional surface than the 2 or 0 AWG wire causing it to have more resistance this is power loss in this case (follow the specifications).

I hope this helps

Thank you,

Shuttle83

Posted on Apr 21, 2008

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  • 631 Answers

SOURCE: Wiring diagram for Alpine MRP-F300

From the Crutchfield site:

Owner's manual

You'll use fig.8 for the front speakers and fig.9 for the subs.

Posted on Sep 05, 2008

UpfrontAudio
  • 47 Answers

SOURCE: alpine amplifiers fade in and out durring high volume bass hits

main problem i think you are having is your loosing power when it kicks a note.. get a power cap! power caps feed your amps constant power! this will solve your problem :)

Posted on Apr 20, 2009

rteemon
  • 578 Answers

SOURCE: Alpine PDX 1.1000 low power output - sub not loud

system not configurate properly go to a pro and let them do for you you have good equipment just need to put together rite.for wht you have you can get better sound than that,,good luck

Posted on Jun 26, 2009

caroldon
  • 17130 Answers

SOURCE: Alpine 3530 Bridgeable 4 channel power amplifier

Use the left and right to connect the positive and negative to the respective speakers in the right and left. Please make sure of the polarity and so be cautious. next you can connect the sub woofer from the left and right channel as the amp is bridgeable. Use the lead to connect from the R- positve to L negative. test and check the phasing of the speakers, must get good low bass or else you can reverse the sub woofer and check again. If you ae having frint speakers connect accordingly the the other channel. Helpful Good day

Posted on Jul 13, 2010

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Is the converter powered or passive? Each RCA (red or white) connection represents a + and - speaker wire for one speaker or channel. So assuming you already have the amplifier you'll cut the speaker wire coming from the head unit. From the head unit speaker wires will attach to the input or hi-level connection on the converter. The other half of the wiring goes to the speakers in the doors. Those will go to the amplifier which is or should be fed by the RCA's on the hi-level converter box.
Passive coverters don't require 12v power but active ones will need 12v input from a remote signal such as from ignition circuit or a power antenna to turn the unit off and on so your battery isn't drained with the car off.

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Hooked up a kpt-445u amp it come on an play 2 minute then amp cutout


There is a short either within your speaker wires or amp connections causing your amp to overload. If it's not either mentioned, then most likely your amp is shorted internally which you will need to take to a shop for diagnosing.

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How to hook up alpine 3653?


Instructions
    • 1 Determine the distance between the system amplifier and the 2-way crossover. Cut this with the wire cutters. Strip 1/2 inch of insulation from the amplifier end of both speaker wires. Loosen the amplifier speaker screws with the appropriate screwdriver. Insert the bare wires under the terminals strips. The speaker wire with the writing or molded ridge is usually used as the positive wire. Tighten the wires down with the screwdriver.
    • 2 Route the wires within the vehicle, avoiding potential hazards such as floors, seatbelt areas, and anywhere where small stressing or abrasion may occur. This usually means under side trim or tucked within the dash. Secure any loose speaker wire with zip ties every 4 inches.
    • 3 Remove 1/2 inch of insulation from the crossover end of the wires. Locate the section of the speaker terminals labeled "INPUT" or "AMP." Insert the wires leading from the amplifier under this strip, following the same polarity used at the amplifier. Screw these down with the appropriate screwdriver.
    • 4 Cut lengths of wire to connect from the crossover to the woofer and tweeters. Strip 1/2 inch of insulation from both ends of the wires. Crimp a 16 gauge insulated connector onto the tweeter end of the speaker wire leading from the crossover. Insert the wires under the loosened screws labeled "TW" or "TWEETER." Tighten these back down to secure.
    • 5 Strip 1/4 inch of insulation from the wire pigtail leading to the tweeter. Insert this into the other end of the insulated connector, and crimp it securely. Repeat for both tweeters.
    • 6 Crimp a 16 gauge female spade terminal on the ends of the wires leading to the individual woofers. Slide these over the appropriate terminals on the woofer, again following the same polarity observed at the amplifier. Insert the crossover end of the wires into the "WF" or "WOOFER" terminal on the 2-way crossover. Tighten them back down to secure.


Read more: http://www.ehow.com/how_7175673_hook-up-alpine-2_way-crossovers.html#ixzz32AMgzu8S

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1 Answer

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1 Answer

I just bought Alpine car stereo CDE-100EUB but I'm having trouble connecting it to my old car toyota Rav 4 2004 model because the wire harness are different. also the alpine wires are more in numbers than...


Please let me know if you have any questions, and thanks for using FixYa.

2004 Toyota RAV4 Car Stereo Radio Wiring Diagram Alpine wire color
Radio Constant 12V+ Wire: Blue/Yellow yellow
Radio Ignition Switched 12V+ Wire: Gray red
Radio Ground Wire: Brown black
Radio Illumination Dimmer Wire: Green none
Radio Antenna Trigger Wire: N/A blue
Radio Amplifier Trigger Wire: N/A blue/white
Front Speakers Size: N/A
Front Speakers Location: N/A
Left Front Speaker Wire (+): Pink white
Left Front Speaker Wire (-): Purple white/black
Right Front Speaker Wire (+): Light Green gray
Right Front Speaker Wire (-): Blue gray/black
Rear Speakers Size: N/A
Rear Speakers Location: N/A
Left Rear Speaker Wire (+): Black green
Left Rear Speaker Wire (-): Yellow green/black
Right Rear Speaker Wire (+): Red violet
Right Rear Speaker Wire (-): White violet/black

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1 Answer

Wiring diagram for Alpine MRP-F300


From the Crutchfield site:

Owner's manual

You'll use fig.8 for the front speakers and fig.9 for the subs.

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1 Answer

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