amp overheating.

i just upped the nob under input controls up to just below half, its sounding about as loud as previous, found which does the sub and lowered that a lot.

how are you ment to know how far you can push the speakers?

when they set it up in the begining they set its loudest to about 27 without distorting, ive gone to 25.

all of the other nobs are set to zero, ive no idea what any of them do.
 
utajoker said:
both sides of the amp

51fef56a.jpg


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The high pass filter for channels 1 and 2 is set at 50Hz by the look of it (though I can't see the low mark on the dial). It should be the value at which the sub's low pass filter is set, which for some gay reason looks to be 150Hz. This should be more like 80-100Hz (to start with). Otherwise your fronts are trying to play very low bass tones in addition to your sub, and your sub shouldn't be playing up to 150Hz.

Your 'mode' switches are set correctly.

The outputs are wired correctly.

Start by setting the low pass value vertical at 100Hz and set the high pass filter to be the same (turn it clockwise until it's at about 100Hz). If you have a digital crossover on your head unit, use this instead and set both pass filters to be 'flat'.

1. Turn phase and bass boost all the way down to zero, which it looks like they are.

2. Turn the level (gain) down to zero on front and rears.

3. Make sure the input sensitivity switches are not selected, i.e. at their outermost position. This is only an attenuator used to bring pieces of the system in line with each other. It basically determines whether or not to reduce the strength of the input signal, which you don't want to do. It looks like both of these are correct.

4. Turn head unit volume up to 75% of maximum.

5. Using a typical CD, increase front and rear gains independently (marked 'level' on your amp) until they're as loud as you'd want them. If you need to go beyond 25% gain or so, increase the input sensitivity until it is loud enough.

6. See if it sounds ok.

If the amp is no longer overheating, there must have been a problem with the rear speakers. I suggest getting the rears connected to the head unit's rear channels, as many others have.

The remark about the problem being due to the quality of the music on your iPod is one of the most stupid things I have ever heard.
 
Thats hilarious. They probably had an engineer who was really good who has now left and the rest of them are cowboys.

Refund all the way baby.
 
i just called in again to get the amp set up better, he has tweaked it while i was sat listening to it, so on the way home i have a good listen and im still not happy with it.

while i was talking to him i said i think i will just get it all taken out and a refund but he said i doubt he will do that because it all works.

and they are still adamant that the distortion in my music is whats causing it to work harder and overheat, apparently 320k mp3s arnt good enough and listening to cds will cure the problem.
 
utajoker said:
and they are still adamant that the distortion in my music is whats causing it to work harder and overheat, apparently 320k mp3s arnt good enough and listening to cds will cure the problem.
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"Only two things are infinite, the universe and human stupidity, and I’m not sure about the former." I'd be tempted to call their bluff burn a CD full of sine waves and pink noise. This isn't as silly as it sounds, in fact sine waves can stress an amp far more than music ever will due to the lack of dynamics.
 
if i go back and ask for a refund tomorrow and they just say no, what part of the sales of goods act do i need to refer to?

basicaly the list of events goes as follows.

1- get amp and speakers installed etc

few days

2- take back because of amp shutting down.

10 days gap due to working or them not having booking space.

3- get fan fitted as they guarantee it will stop the overheating problem

next day go back and book in for next week

4- take back again, they test, claim its my music, disconnect rear speakers which will obviously stop the overheating but they ahve altered the amp settings and it now sounds rubbish.
 
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utajoker said:
if i go back and ask for a refund tomorrow and they just say no, what part of the sales of goods act do i need to refer to?
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I'm not really sure really, I think there's one which states product must be fit for purpose, and it looks like it's pretty clear cut in this case.
 
mp3s are fine ive got my 4-channel amp in the spare wheel well and its never over heated even when its 30+ degree, out in italy and driving for 6hours!

Had a pair of fans exhausting/pulling in the air last year, didnt bother this year and still fine (there is a largish pair of holes which had rubber grommets that i took out).

don't know what wrong with your set-up but it shouldn't be like this.
 
Can you elaborate on 'it now sounds rubbish'? Fronts? Sub? Sound quality? Too quiet, too loud, what?

You can't get a refund just cause you've been fobbed off for a bit, as now they have rectified the situation as far as they're concerned. Sale of goods provides for an opportunity to rectify the situation before refund is given, as far as I'm aware.

The amp is no longer overheating so that's not grounds for a refund.

You don't like the sound, but without playing with the settings, you'll not know if it's cause they've set the amp up incorrectly or it's just crap equipment.

They say that the warranty is void if you play with the amp settings, but you can always just revert them to how they are in the picture if you need to take it back.

One thing - it's hard to tell in that picture, but it looks like they have now reduced the input sensitivity of the rear channels by pushing that knob in.
 
basically, it sounds really harsh, the music doesnt sound as full as it did before.its a bit like standard speakers with a standard head unit but louder without the distortion. its hard to describe exactly how it sounds.

looking at that picture ive posted it looks like he has marked were the gain is set to incase i do alter anything then he can check and know.

maybe if someone can explain what all of the nobs do and advise on how to go abot setting up i ca have a fiddle to see what i can do.
 
well i decided not to mess with it and went out with a proper cd in to see what its like, within a minute or so i smelt some burning and upon sniffing the speakers they smell quite bad of burn. have rung them to tell them and im going back tomorrow morning.
 
utajoker, if you can't get a refund and decide not to take it any further with the shop, get in touch.

I don't class myself as an expert by any stretch of the imagination but getting the system checked over and set-up by someone who isn't a complete numpty sounds like it could be a good idea.

I'm only down the road from you and wouldn't mind popping over if you needed a hand.
 
agw_01 said:
utajoker, if you can't get a refund and decide not to take it any further with the shop, get in touch.

I don't class myself as an expert by any stretch of the imagination but getting the system checked over and set-up by someone who isn't a complete numpty sounds like it could be a good idea.

I'm only down the road from you and wouldn't mind popping over if you needed a hand.
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i appreciate the offer, will see how tomorrow goes.

i assume the burning smell is the end of the speakers? or is it just a warning they are being pushed to much?
 
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