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Amp Connection, sub not working

I think the problem with my amp is the connection is faulty. where the two big cables go from the cd player to the amp the coloured plastic bit that is in the connection bit, one red and the other yellow, one of them is lose and moves about. would this be the reason the sub is not working as the amp seems to work???/

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Try to put a spliter RCA plug in the good hole on the amp!!! The splitter has to be 1 single male by 2 female endsAmp Connection, sub not working - 470.jpg

Posted on Jan 20, 2009

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I have 2 amps instalkled in my car one is sony 1200w 2 channel amp for speakers and one is solid audio f2500d for 3 subs my sound and every thing was good but suddenly from yesterday im having trouble when...


First disconnect the CD head unit from the sub amp and see if the other amp works. If yes, the problem is the wires to the amp, the amp itself, or the subs/sub wiring. If no, the problem is the head unit--probably an internal short.
If the other amp works with the sub amp disconnected, reconnect the sub amp to the head unit, but disconnect the sub wires from the amp. Try the CD player. If the amp goes to protect with no speaker wires attached, the amp is bad. If the amp is OK, the problem is the subs or sub wires. Hook the wires up to the amp again, but disconnect them from the speakers. Try the player again. If the amp goes to protect, the problem is the amp wiring. If not, the problem is the subs. Check the impedance of each sub using an ohmmeter to determine which amp is out of spec.
Please let me know if you have questions, and thanks for using Fixya.

Jun 11, 2011 | Solid Audio F2500D 1-Channel Amplifier Car...

1 Answer

I just bought two rockford fosgate t1 twelves duel voice coil 4ohm I'm running a old school alpine v12 1507 mrv 2channel. I want to bridge the amp to get the most out of these subs would it be better...


Hi there,
This amp should run comfortable at 2 ohms/channel. However, your dual voice coil subs are rated at 4 ohms. This means when you connect the 2 voice coils together in parellel (positive to positive and negative to negative both coils wired to one output) the amp will see 2 ohms. So if you connect both subs to one output then your amp will see 1 ohm (not good) If you run the voice coils in parellel but the subs in series then the 2 resistances (ohms) will be added together. So that way the amp will se 4 ohms. This is fine but the amp would push more power into 2 ohms. You can run one sub on each channel if you can split the head unit output to 2 outputs, problem is then you will be halving the amount of power to each channel. Personally I would probably be more inclined to run 1 sub on this amp and run another amp from the pre-outs on the first amp for the 2nd sub. Try to find another amp the same to run the second sub. Mind you, 2 of these amps will need some big power cable to run them but should shake your teeth out!
Hope this helps

May 08, 2011 | Alpine Car Amplifiers

1 Answer

NO BASS!!


1) Check the Subwoofer for continuity - At the subwoofer, one at a time, test the terminals for Continuity using your Digital Multi-Meter; if your DMM doesn't have a Continuity test, use the Resistance, or Ohms, test and check for Resistance in the Subwoofer Coil (be sure to disconnect the subwoofer wiring before performing these tests).
2) If they test out good, hook the wires back up and test the terminals at the terminal cup or at the Amp hookup if you didn’t use a terminal, don't hook it up to the amp yet. Sometimes the wiring inside the box can be a problem if it has come loose, or isn't making a great connection.
3) If you have a Sub or multiple Subs with Dual Voice Coils, or multiple Subs with Single Voice Coils, make sure your wiring is correct by checking here:
http://www.the12volt.com/caraudio/woofer_configurations.asp
4) Make sure there are no Hi-Pass filters, crossovers, or multi Channel switches enabled.
5) Replace your RCA cable/s with known working RCA cable/s from the Source/Head Unit to the Amplifier/s.
6) Check your Head Unit settings; make sure the Bass is turned up and/or the Subwoofer setting is turned On.
7) If you are still getting no or low output, try plugging in an MP3 player or CD player using a headphone to RCA adaptor and check for sound output. If there is still no or low output, your Amplifier outputs are probably burned out.

Jul 18, 2010 | Jl Audio 300/2 Car Audio Amplifier

2 Answers

My sony xplod 1200 whatt amps red light keeps coming on all the wires are good when it gos to hit it gos red


check your ohm load on the sub and see if your amp can do the same, That is why every time it shuts off into protection mode. Check your gain level on the amp to this is not a volume knob for your amp, It is to get both the amp and cd player on the same page. Hope this was helpfull

May 19, 2010 | Sony Xplod XM-554ZR Car Audio Amplifier

1 Answer

MTX Thunder 3401 not responding. Lit but no sound.


turn down music open sub box and put another speaker at wire and check again if work means sub is ok if not check the signal cable, and put there the speaker to try signal

Apr 05, 2010 | MTX Thunder 3401 Car Audio Amplifier

1 Answer

Is there a wiring diagram for the nikkai EAPA450 Amp


Hi, if you still need a photocopy of instructions email me mail@srands.co.uk

If you want instructions in brief this involves POWER CONNECTIONS, PHONO LEAD & SPEAKER CONNECTIONS:

POWER (At the same time when routing these wires, I would connect the PHONO LEADS from the car cd player to the amp, if your car cd player only has 1 preout (1red & 1 white) then you will need two phono splitters, a female to 2 males. Phono leads carry the unamplified sound from cd player to the amp):
~ Permanent 12V+ (Thick lead that is fused direct from battery all the way to the amp, wire must be 20a to 30a +, hence 1cm diameter wire, known as AWG8, Maplin sell cheaper kits then most)
~ Amp REMOTE (A thin insulated cable (5a is OK) from car cd player amp remote wire, this turns the amp on when the cd player is on, if your car doesn't have an amp remote wire, suggest nearest ignition supply or seperate switch that you turn on when you want to turn on the amp)
~ GrouND 12V- (Insulated lead (20a to 30a) to nearest part of unpainted car chassis such as interior panel screw hole, instead of an insulated cable all the way from the batery, this is common practise.

SPEAKER:
Each speaker has a - negative & + positive, these must connected correctly. The amp has 4 channel, 2 channel labeled as front, 2 channels labeled as rear. Using speaker wire, connect cable from amp to speakers. Note: Ensure the speakers being connected only receive sound from the amp (Not cd player as well, as would damage players or at the very least impair sound)
The amp has a feature called bridgeable this means a sub 8" or 10" sub can be powered by 'bridging' two channels. For example there are 2 ways to bridge power a Sub on the NIKKAI EAPA450:
i) Sub speaker wire positive + to channel RL and Sub speaker wire negative - to channel RR.
OR
ii) Sub speaker wire positive + to channel FL and Sub speaker wire negative - to channel FR.

Switches:
~ Bass boost, meant to be on for a channel if using sub, otherwise off.
~ X-over mode adjust hi/lo frequencies, only work if both x-over switches are on! Then adjust switch frequency knob, until it sounds right.
~ Gain (Volume knob) adjust volume knob up or down, until it sounds right!

NOTE:
You will need patience! many hand tools and parts such as: Wiring kit, fuse holder 20a/30a, Phono leads, speaker cable, Fork/ring connectors, wire strippers, wire cutters, set of screw drivers, also ueful to have zip ties to tdy excess cable and 'P' cable clips to tidy speaker wire to shelf, etc.

OK

Any more questions just email me mail@srands.co.uk

Dec 01, 2009 | Car Amplifiers

2 Answers

No sound protection light on.


Either blown subs, or bad amp.. Disconnect the subs, and try turning the amp on, if the amp is still in protect then your amp is bad, if the protect light goes off, then your subs are bad, or possibly wired at to low of an impedance, but I don't think that will trigger the protect on an Audiobahn amp.

Aug 21, 2009 | AudioBahn A2002T Car Audio Amplifier

2 Answers

Ok I just bought a used fosgate amp belive its a T10001b could be wrong its big has fan 3 led lights and some pioneer premier 10 flat subs think there 4ohm. I bought a brand new amp install kit 6gauge...


eyp, most of the time speaker connections blow and fuses wont stop that from happening. They are there to stop the mainboard from frying and not working at all. try running rca splitters to the operational side of the amp. run the sub on 1 channel. you will start hearing a difference but both sides will work. if not, run the splitters from the head unit and bridging it. these are the cheapest solution i could provide

Jul 27, 2009 | Rockford Fosgate Punch P5002 Car Audio...

3 Answers

Sony 1200 watt amp


What kind of deck to you have? Sometimes there's a setting for the subwoofer output that has to be turned on. How is the deck hooked up to the amp? Be sure of the normal things: -Make sure the sub is connected in side it's box -Make sure the RCA cables didn't come off the deck -Check every connection! Let me know and be sure to leave feedback or I don't get paid.

Oct 03, 2007 | Sony XM-2002GTR Car Audio Amplifier

1 Answer

Amp won't put out sound


Hello, if you leave me your email I can send you the user manual for this amp. Best regards, Arpi

Apr 10, 2007 | Sony XM-SD22X Car Audio Amplifier

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