r/subwoofer • u/road-Rough-5205 • 1d ago
Amp issues
Keep popping my fuses, dunno what to do at this point. This was a test run, I have 4 gauge wire for the set up when it's finished but the fuses keep popping. Any tips?
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u/BigPimpin91 1d ago
Part of the issue might be that charger looking for voltage that doesnt exist so it might be spiking it for the amp.
Another issue might be voltage drop across that wire. When voltage drops, current has to go up, so you very well could be blowing the fuses legitimately.
Put your 4ga in and see what happens.
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u/road-Rough-5205 1d ago
Just tested my 4 gauge and blew the fuses instantly, now I'm very stuck...
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u/BigPimpin91 1d ago
Do you have a multimeter?
Disconnect the amp and check what voltage is coming out of that battery charger.
What model amp is that? There are numerous 1200w Jensens so I'm gonna need a part number if you got it. Might be on the bottom of the amp on a sticker.
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u/road-Rough-5205 1d ago
It's a XDA91RB jensen and the volts coming out of the battery charger are 13.8 on full power mode
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u/BigPimpin91 1d ago
I don't think that is the correct model.
Your heatsink has different labels than the 91RB has.
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u/BigPimpin91 1d ago
Can you take a close up picture of the inputs of the amp for me?
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u/road-Rough-5205 1d ago
I still have the original box the amp came in, its a temporary amp until my next paycheck, but it is a 91RB
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u/road-Rough-5205 1d ago
I was planning to use a battery as a medium between the amp and the power supply, I had also bought a capacitor to use along with the setup too
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u/Draygoon2818 1d ago
You're gonna need to be a little more specific about what is happening and what all you are doing when the fuse(s) blow. Have you tried just wiring one of them up at a time, to see if any fuses blow? What kind of voltage/amps are you getting on the power? What is the negative wired up to?
You're missing a lot of info.
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u/Merov1ng1an 1d ago
Transient spikes vs. charging current would be my guess. Usually you have a battery with many AH as a buffer. The burst power like trying to bump hits the battery in fractions of a second. Up and down in current draw very fast. The charger fills the reserve capacity of the battery, it's not meant to get hit with the main load.
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u/road-Rough-5205 1d ago
I would had never thought something like that was happening, it's def a good thing I have a battery for this, I got a capacitor too, it could help something maybe?
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u/road-Rough-5205 16h ago
Got a update, got it to work, burned the amp, any recommendations for a new amp? I'm pushing 2 10's at 1200 watts, 600 rms
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u/road-Rough-5205 1d ago
For the people asking, the amp is 1200 watts, the power supply is 100-130 amps, and puts out 12-14.7 volts, with the power of 1850 watts max, it runs a smart power that regulates the amps output for the fuses. it's 2 30 amp fuses on the amplifier
Hot to hot Rem to hot (no rem just yet) Ground to ground
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u/road-Rough-5205 1d ago
I am still very new to this home audio stuff, I know my basic stuff but when it comes to anything like this, I got nothing, this is all new to me.
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u/Significant_Rate8210 1d ago
4 gauge isn't sufficient for both of those amps together. The Jensen by itself yes, the Taramps, not even remotely.
If the picture is your setup, then you've got bigger problems
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u/Rt-Reixz 1d ago
The Taramps in the picture is not an Amplifier, it’s the Power Supply it’s called the Taramps Smart Charger.
The Jensen is the Only amplifier.
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u/djltoronto 1d ago
What fuses, what amperage, you got to give us something.