Question about Competition INTERFIRE BIG BOY 2CH AMPLIFIER IFHB-23340C Car Audio Amplifier

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Amp will not turn on

I have an interfire if 4700b and it will not power on I switched the amp and it turns on

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  • Anonymous Mar 30, 2014

    I would like to know how many watts is the ib-4700b interfere amp an how to adjust the frequintsys



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Check all conections, check any fuses,it might be the amplifiers power supplys shot

Posted on Jan 09, 2009


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I hooked up my 2 dvc 12in subs to 1100 w interfire ib2900c 2ohm stable amp..however after hooked up subs make very loud bababababa sound when turned on ..what don i do to fix this?

It's in your rca lines or you are missing or don't have good enough ground to your amplifier or CD player. To check this simply unplug your RCA's at the radio it's your radio. If it dosent it's in your rcas

Oct 22, 2015 | Car Audio & Video

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How do I hook up my interfire ib2900c amp correctly??...hooked up 2 dvc 2 ohm 12" subs 2ohm stereo load..but all I get is loud blurring out sound forcing me to off..what do I do??

If the subs you have are 2 ohm DVCs, that usually means each voice coil is 2 ohms. Putting the DVCs in parallel will make the sub 1 ohm, which is beyond the capability of the amp (which is only stable down to 2 ohms per channel). Putting each subs DVCs in series (for a total of 4 ohms per channel) will at least allow the amp to operate properly, even though you will not be able to maximize the output power.

Oct 06, 2015 | Ohm Car Audio & Video

1 Answer

2-12 inch kicker comp 4ohms each to conect to a interfire a700.2 amp best wire setup so i dont keep getting a protection led when volume i increased...thanx n advance.

Turn the gain down and try that, usually 25-40 is all you want.

Also make sure the AMP is well ventillated, or it will overheat and cut off...

Id no - go, then wire it without a bridge, two wires from each channel to each speaker.

Jun 17, 2014 | Car Audio & Video

1 Answer

No bass

could be the speaker its hooked up to . try to disconnect the sub and see if the protect light goes out

Feb 06, 2010 | Competition INTERFIRE BIG BOY 2CH...

1 Answer

What kind of noise it will bang or should i go with class d amps

If you run a pair of subs to each amp at a 4ohm bridged load per amp you will get the full power of the amps delivered to your subs-roughly 450 watts per sub as punch amps are all under rated-that sh%&t gonna bump hard - thats an incredible setup from an equipment standpoint- i run 1600watts on a pair of 15z and its freaking obnoxiously LOUD and yours will be moving more air than my 15s so it should be just mind numbing - go for it !!!!!!!!

Jun 04, 2009 | Rockford Fosgate Punch 800a2 Car Audio...

1 Answer

When you turn the fan on in the 1 position with the a/c on the fan stops working. when the fan is switched into the 2, 3, 4 position the fan blows but the a/c cuts off. what is causing this?

something is being grounded, you need to retrace the wires and find out what is cousing the interfirance, if its not that then check the blower motor it will be located on the firewall.

Apr 28, 2009 | 1990 Mazda MX-6

1 Answer

How do i install an interfire IB2400c amp?

Hello blown1914,

That appears to be a good amp and should power your subs with no problem.

You will want to install a line-level converter to your stock speaker outputs and use RCA cables to the amp. Here's a link to SonicElectronix line-level converters. The PAC SNI-35 is OK if your stock radio has a remote turn-on lead. If not, you should probably look at the PAC TRUNK-LOC. It still a 2-channel line output converter but also includes a trigger output to power on your amp.

I tried Interfire's web site to see if they have a downloadable manual for your IB2400c amp. I could not find it, so it may be that it is no longer in print or no longer available.

You may want to go to their support page (link attached) and send them an email.

Hope this helps.

Apr 12, 2009 | Car Audio & Video

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Subwoofer in my car works only on tuner

I had the same problem. most radios have a power antenna wire and an amp turn on wire it sounds like your amps are being turned on by the power ant wire that loses power when you put a cd in try swapping the blue with blue and white wire this should solve it

Nov 19, 2008 | Sony CDX-GT300 CD Player

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