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Missing channels I don't have ch. 37,38,39 and 40 radio stays on 27.365 why?

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Your amp is AKA: JUNK is blowed because ur antena wire (blue) gives u stations and thats why you have none as well as no channels outputs on your amp

Posted on Oct 25, 2008

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Ok I have an alpine mrv-m500 when I plug the RCA outputs from my head unit they only work if the inputs go across channels ex; left ch(1) right ch(2) or vice versa. When the RCA inputs are correctly...


what type of radio do you have? next in ur radios menu there mighht be a selection of using and amp or not u might to to adjust ur stereo selections for using amp/rca/wattage/loud.fader you get kinda where im going my kenwood and alpine both have this feature in the menu tab..goodluck

May 18, 2014 | Car Amplifiers

1 Answer

I have a kicker two ch amp and when I hook up my two 15s which ever sub I hook to the right CH flexes weird and don't sound like the one hook to the left CH


well what ampage is your amp ?? for example if its a 350 amp and you have two speakers at 200 each the sound quality will be **** in other words but if you have 1 thats 150 and 250 the less powered speaker is going to give out more sound. either that or one of the channels is broke or weak

Aug 23, 2012 | Car Amplifiers

2 Answers

ON MY Pioneer PRS-X720 Car Audio Amplifier WHEN I TRY TO HOOK UP THE BRIDGE LITTLE SOUNDS COMES OUT THE SPEAKERS I HAVE TWO 12S MTX THUNDER IN THEY ARE IN A 2OHMS BOX BUT WHEN I HOOK UP JUST ONE CHANNEL...


From the specs this amp can only handle 4ohms when bridged but can handle 2ohms when it's not bridged

Specifications
  • Continuous Power (20Hz-20kHz, 0.04% THD)
    • 2 ch: (4 Ohm) 100Wx2
    • 2 ch: (2 Ohm) 200Wx2
    • 1 ch: (4 Ohm) 400Wx1
  • Maximum Power (EIAJ)
    • 2 ch: (4 Ohm) 250Wx2
    • 1 ch: (4 Ohm) 750Wx1
  • Frequency Response: 10Hz - 50kHz (0,-1dB)
  • Total Harmonic Distortion: <0.01% (1kHz, 4 Ohm)
  • Signal-to-Noise Ratio: >105dB (IHF-A Weighted, at 1kHz)
  • Dimensions: 10-3/8" x 2-1/2" x 13-5/8"
Hope that helps.

Nov 08, 2010 | Pioneer PRS-X720 Car Audio Amplifier

1 Answer

I have 4/3/2 ch. alpine f-240 amp- i want to hook up four 6x8 3-way and one 12''sub. the amp has bass EQ on ch. 3. how would i hook it up and get the most power. can i put the 4 6x8 bridged all together...


run two 6x8s on each of the front channels of the amp. then depending on the sub you can bridge it on the rear channels.only if its a single four ohm. if its a dual 2 ohm sub run each coil on each channel. 1 coil-1channel. the other coil-the other channel. amp should run fine may run a little hot since it will be doing all it can do at a safe ohm load. just make sure it is mounted in a well vented area. should be safe.

Dec 25, 2009 | Alpine MRP-F240 Car Audio Amplifier

1 Answer

No output on channel B OF PEAVY2000AND1200


You missed something. Use the good channel (A) to compare resistance and or voltage readings against the defective channel. Obviously you've removed the dead short issues (AC fuse is holding) BUT your signal path is still askew. Any transistors/diodes under suspect should be removed from the circuit for proper testing....Glen

Apr 14, 2009 | Peavey AMPLIFIER, 1000 WPC, DDT, 8/4/2...

1 Answer

Why connect a car amp in series and will this help me?


Not sure if it's what was meant by previous poster. But if you're just driving the two subs off the 4 ch, and no other speakers, your best bet is to run pairs of bridged channels, ie use the 4 ch as a more powerful 2 ch amp. Then independently run one sub on each of these paired channels.

If you bridge all 4 channels (not sure if this is an option on this amp), and then run your subs in series, you will likely lose out compared to the peak power you could be seeing with two independently paired channels.

Dec 01, 2008 | Car Amplifiers

1 Answer

Missing right channel...


The head unit appears to be defective.

Jun 12, 2008 | Pioneer Car Amplifiers

1 Answer

Alpine PDX-4.100 3ch operation


use channel 1 and 2 as normal, use the positive from channel 3 and the negative for channel 4 as mono 1ch, your bridged output on the mono chan should be around 200watts at 4ohms.

Nov 25, 2007 | Alpine PDX-4.100 Car Audio Amplifier

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