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

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My new Alpine KTU-445U amplifier is not working

I followed all the instructions - as poorly as they are, and wired the yellow wire to the battery and the 2 blue/white control wires together to a switch. No sound? I connected the speakers to my other amplifier and they work.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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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

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SOURCE: Alpine mrp-m450 Amp won't stay on

Sounds to me like it might be the remote turn on because the first time i installed it, it did the same thing, and i found out that there is two blue wires coming out the stereo, one with a white stripe, i connected it to the blue wire, and it didnt work, then i connected it to the blue and white wire, and it worked. Well hope this solves your problem, goodluck.

Posted on Jul 06, 2009

etirbynnor
  • 655 Answers

SOURCE: Amplifier displays "CUR"

Hello anwbrown,

The "CUR" display means that the amp is drawing excessive current and the protection circuit is activating. Too low impedance or shorted speakers will cause the amp to draw excessive current.

The Alpine V12 is a Class D mono amp with only one set of speaker outputs. All versions, M301, M501, and M1001 are only stable to 2ohms. Assuming that all 6 of your connected subwoofers and speakers are 4ohm and they're all connected in parallel, the amp sees a .67 ohm load, far below it's rated impedance.

When brand new, the amp could probably operate at low to moderate volume levels without drawing excessive current. But as electronic components age, their tolerances change and they become less able to withstand excessive current or mismatched impedances.

I'd get a 4-channel amp and drive the 4" speakers off the front channels and the 6X9's off the rear channels. And just power the subs off the V12 making sure that they are connected to show a minimum load of 2ohms.

Hope this helps.

Posted on Jul 29, 2009

caroldon
  • 17129 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

  • 9 Answers

SOURCE: Im adding a alpine cda9884 headset with a ktp-445

how is the signal going from headunit to the power pack? Should have a harness from the power pack to the deck (h/u). then out to the factory harness in the jeep. remember there is an amp under rear seat so you need to bypass that to make everything work. yes the blue/white wire from deck to blue/white wire ath the power pack (amp) should be connected in order for the power pack to turn on.

Posted on Oct 20, 2010

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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
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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
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Go to the store and buy a mounting kit and wiring harness adapter that are for your car. There are alot to choose from and most are universal and come with instructions. You can get these at wal-mart or best buy. The mounting kit is meant to fill in the empty space left by the new aftermarket radio (your alpine). The alpine will have a metal sleeve around it. take this off and put it in the mounting bracket so it is flush. The sleeve will have little triangle shaped tabs on it. Bend these out so the sleeve cant fall out of the bracket or someone will be able to pull out your radio. Remove your stock radio by pulling off the trim around the radio. This is held on by clips, so be careful. There will be a couple of screws holding in the radio. Remove these and pull the radio out. Behind the radio there will be 1 or 2 wiring harnesses plugged into the radio. Unplug these. Then attach the wiring harness adapters you bought. These plug into the stock harness and have wires at the other end that are labeled. Wire the alpine wiring harness into the harness adapters that you plugged into the stock harness. If you want to you can unplug the harness from the alpine and wire it to the harness adapter before plugging it into the stock harness. The wiring diagram should be on the radio. If not the colors are pretty common.
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ORANGE = ILLUMINATION
BLACK = GND
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GREY/BLACK STRIPE = FNT SPKR RIGHT(-)
WHITE = FNT SPKR LEFT (+)
WHITE/BLACK STRIPE = FNT SPKR LEFT (-)
VIOLET = REAR SPKR RIGHT (+)
VIOLET/BLACK STRIPE = REAR SPKR RIGHT (-)
GREEN = REAR SPKR LEFT (+)
GREEN/BLACK STRIPE = REAR SPKR LEFT (-)
BLUE = PWR ANTENNA LEAD
BLUE/WHITE STRIPE = REMOTE TURN ON LEAD(FOR SUBWOOFER AMPLIFIER)
There may be RCA jack inputs in the back and these are for the subwoofer amp.
There will be a large black cable in the back and this is the antenna wire. Plug in the antenna wire from the back of the stock radio here. Yu may or may not need an adapter for this depending on the size difference between the wire and the hole it plugs into.
**Please note: if your car has a "premium" sound system that comes stock with an amplifier you will need to attach the power antenna lead from the alpine to the remote turn on lead on the harness adapter. If not when you turn on the radio/cd it will not turn on the stock amplifier and the speakers will not work.
I found this out with my 99 dodge avenger which has an Infinity stock radio. You can pop the trunk and look up at the back dash and see the small amplifier.
Once the radio is wired and the mounting bracket is installed, connect the harness adapter as well as the antenna wire. The new wiring harness adapter makes the wiring a little longer so you may have to stuff them back a little bit. Connect the harness from the alpine back into the back of the radio and slide the head unit into the metal sleeve until you hear a click. Before sucuring the mounting bracket and putting the trim back on it is a good idae to try the radio out so if there is something wrong you dont have to disassemble it again. When you buy the harness and bracket it will say on the packaging "nissan 84-94" or "Honda 83-99" or something similar. Look on the back for a complete list of compatable models.

Hope this was helpful. Please rate, and thanks!

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Alpine


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RED...12V+ IGNITION WIRE..can be joined where alpine red was connected
BLACK 12-, NEGATIVE....BODY GROUNDING
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