Jaws021

Ok so i hooked up my new system..

Sounds super mad bad ass.. loud as hell with a very nice crispy sound to it.

Problem is.. one of my amps(1 out of 3) is shutting off..

It has this amp


These are its specs
4 Channel Amplification
Tri-Way Output Configuration:
4 x 250 Watts Output
2 x 500 Watts Bridged Output
2 x 250 Watts Front + 1 x 500 Watts Rear
1000 Watts Total Output
Polished Chrome Finish w/Plexiglass Panel
Remote Control Bass Booster (0~12dB @ 60Hz)
Fully Adjustable Electronic Crossover Network
Soft turn On/Off Circuit
2 Ohm Stereo Stable
Bridgeable into 4 Ohms
Dual MOSFET PWM Power Supplies
Variable Gain Control
Remote Turn On/Off
Hi/Lo Level Inputs
Power On LED Indicator
LED Protection Indicator
S/N Ratio: >90dB
THD: <0.04%
Frequency Response: 10Hz-30k Hz
Thermal, Overload & Short Circuit Protection
Dimensions: 2"H x 11"W x 12.2"L


Im using it right now as a 2 channel (bridged) to power my subs.

The only problem is that it keeps shutting off (that surge protector thingy) after i start raising the volume.

Ground is good and 12v is good as well.
The only problem is well.. i have 2 other amps hooked up.

Could it be its not getting enough juice?
This is the only amp that is bridged.

Also.. when im just testing it.. One sub is always hitting harder than the other. Ill switch channels on it.. and its still hitting harder than the other. I have also switched the wiring.. no change.
So its definantly not the wiring nor the speakers.
Also.. the lower i set the amp.. the more even the subs will hit (one is always hitting stronger than the other).

Im guessing the amp is not getting enough juice. I just bought a capacitor (not installed yet, as it is about 3 days away from me)
SPECIFICATIONS:
1 Farad Capacity
24 Volt Nominal -30 Volt Surge
Auto on/off Four-Digit Readout
blue LED Indicator Light
Electronic Polarity Protection Circuit
Over voltage Protection Circuit
Soft on/off Circuit
Mounting Brackets & Hardware

Do you guys think its just not getting enough juice? Or should i start looking at another amp?
I know its cheap.. but it does the trick.

Another reason why im guessing its not getting enough juice..
I checked the main 12V fuse (the one thats like 5-10" away from the battery), and the part of the fuse touching the battery side of the cable is dark and a bit melted..

Dam i hate audio wiring..

The rest of the sound system sounds clean and fine. The 2 other amps are hitting great (another legacy and 1 sony)

UltraTibby

That sounds like a lot of juice. What kind of battery do you have? Hint, Hint- Yellow top..... If you swap position on the amps does the one with the problem change?

a_gut

[quote]Thermal, Overload & Short Circuit Protection [quote/]

It could just be getting too hot. A 1000W amp feeding maximum power creates a LOT of heat. Also, check the impedence on your speakers. If you have the wrong impedence matched up with the amp, things don't act like they are supposed to.

MADTIB

I think a_gut has it right.

If your subs are 4 ohms each,and you have them wired to each other in parallel,then the total impeadance is 2 ohms.Having a 2 ohm load bridged on that amp isn't going to work.Most amps can only handle a 4 ohm load in bridged mode.

The specs on your amp says, "Bridgeable into 4 Ohms".

Wire the subs together in series then bridge.Or,wire them to the amp in normal stereo,and the problem should go away.

Jaws021

ok not to be a retard..

but can you please explain in detail how to wire it in series then bridged?

4 channels

4 channel outputs + and -

I just wanna make sure,.. this is were im 75% sure on things..

Im thinking i need to split the 2 channel outputs from the stereo into 4..
then run it like i would for 4 channels..

Then just bridge the wires together?

MADTIB

Parallel is like this:

Sub A+ to Sub B+
Sub A- to Sub B-......................................Then you take either sub A or B,and hook wires from the +/- to the +/- on the amp.Is this the way you have it connected right now?



First off,tell me if that's the way you have it right now, then we'll go from there.

Jaws021

ok theres 2 channels outputs from the stereo
i have the first one hooked up to channel 1 and the 2nd hooked up to channel 3 in the amp

first 12" is hooked up to the channel 1 positive and channel 2 negative

1. + - 2. + -
Positive wire negative wire

Channel 1 positive side is used.. and channel 2 negative side is used.
Channel 1 negative is not used. Channel 2 positive is not used.


I have the second sub hooked up the same way.. except its channel 3 and 4

Do i have to split the channels coming from the stereo to the amp into 4? using a Y

Then use both sides of the channel (on the amp going to the stereo)
Then just connect positives from both channel 1 and channel 2? and negatives from channel 1 and 2? together for one sub?

Then do the same with 3 and four?

Jaws021

Ok.. this sounds like
i hook up the subs together so they can share the same juice
So sub A + to sub b+
Sub a- to sub b-

Then..
I pick one and add another set of wires to go to the amp..

Now the only question.. how do i hook them up in the amp?

I have 2 channels coming from the stereo and 4 channels on the amp
Hook up 1 and 3?
Then just use up the + on channel 1 and the negative on channel 4 or 3?

Wouldint that make it 1 ohm?

Or do i ditch every channel except 1?
So Channel 1 i use both + and - and just forget about the other channels in the amp along with the spare channel from the stereo?

Ugh..
i hate stereos.

Sorry for the double posting.. jus trying to make things a bit neater by keeping the questions seperate.

MADTIB

You're kinda confusing me,dude.It sounds like you are talking about RCA's from the hu to the amp,at the same time of talking about how the subs are connected to the amp.

Lets concentrate on one thing at a time.First,the way the subs are wired to the amp.You have a 4ch amp for the subs,yes? It sounds like you have one sub bridged to ch's 1 and 2,and the other sub bridged to ch's 3 and 4.Is that right? Just wanna make sure,because I thought before that you had the subs connected to each other,then to the amp.


Square me away on this part, then tell me about how the RCA's are going from the hu to the amp(s).

Den_Eds

Heeey,

think this should be fixed :

Do i have to split the channels coming from the stereo to the amp into 4? using a Y

From the HU you'll have 1 x Right & 1 x Left goin to the amp, correct ?
When you bridge the amp use a Y splitter on those channels and connect the 1 x right & 1 x left from the HU to these Y's. Then connect the opposite of the Right Y to channel 1 & 3, the opposite of the Left Y goes to channel 2 & 4. Your subs are connected ok, I think...
Channel 1 use + channel 2 use -
Channel 3 use + channel 4 use -
Then like in one of the posts above it depends on your subs, what is the resistance of them and are they single coil or double coil ? Make sure that when you brigde them on the amp the resistance don't go below 4 Ohm.

Hope this helps You a bit further on the way.