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Amp cutting off


AASMDBASS

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Posted

I have an AQ 3500.1 and 1 18 smd... Have had them for 2 years and every once in a while if I play a song that has frequencies around 27hz, and the bass knob half up, the amp will shut off completely... The gain on the amp is right around half, and has been correctly adjusted with a DMM... My question is what would cause this to keep happening... It happened 3 times today and it's driving me insane... Electrically I have the stock battery under the hood, an XS Power D3100 secondary battery, big 3,and a DC power 270 amp alt, custom box at around 6cu ft tuned to 32hz... Please help, thanks

Also, iI don't know what noise a sub makes when it bottoms out, but to me, it sounds like that happens right before the amp shuts off...

Pioneer DEH 80PRS HU

Ascendant Audio SMD 18"

Audioque 3500.1D

XS Power D3100

Rockford T1 components

Rockford P400X4

Posted

Bass adjudted with a dmm does not equal correctly as you claim.

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Posted

Voltage at your amp when this happens? Verified all connections and RCAs are tight? What happens if you unplug your bass knob?

Posted

Voltage at your amp when this happens? Verified all connections and RCAs are tight? What happens if you unplug your bass knob?

Haven't checked it yet... But let's say the voltage is about 13...then what would you assume?

Pioneer DEH 80PRS HU

Ascendant Audio SMD 18"

Audioque 3500.1D

XS Power D3100

Rockford T1 components

Rockford P400X4

Posted

And the RCA are tight

Pioneer DEH 80PRS HU

Ascendant Audio SMD 18"

Audioque 3500.1D

XS Power D3100

Rockford T1 components

Rockford P400X4

Posted

Bass adjudted with a dmm does not equal correctly as you claim.

It was set at a car audio shop... I didn't do the install but they told me everything was set correctly and no clipping issues

Pioneer DEH 80PRS HU

Ascendant Audio SMD 18"

Audioque 3500.1D

XS Power D3100

Rockford T1 components

Rockford P400X4

Posted

Voltage at your amp when this happens? Verified all connections and RCAs are tight? What happens if you unplug your bass knob?

Haven't checked it yet... But let's say the voltage is about 13...then what would you assume?

You know what they say about assumptions

ASSUME Makes an ASS out of U and ME

Posted

Voltage at your amp when this happens? Verified all connections and RCAs are tight? What happens if you unplug your bass knob?

Haven't checked it yet... But let's say the voltage is about 13...then what would you assume?

You know what they say about assumptions

ASSUME Makes an ASS out of U and ME

Lol...I'm just looking for hypotheticals... If everything checked out voltage wise...

Pioneer DEH 80PRS HU

Ascendant Audio SMD 18"

Audioque 3500.1D

XS Power D3100

Rockford T1 components

Rockford P400X4

Posted

Then I'd go around the car with a wrench and verify all connections are tight. That includes any terminals on your box and the terminals+tinsels for your sub. Pull out your head unit, make sure the RCAs in there are tight as well.

If your bass knob accepts RCAs, check those are tight, Also wiggle them around to see if there is a loose connection inside the wire

If it's the kind that plug into the amp: Unplug it and see if the problem persists

Posted

When you say "bass knob" are you talking about the remote gain control that came with the amp? if it is an actual bass boost, turn it and leave it down. If your gains are set properly, you almost never have room for boosting any frequencies.

A DMM can't detect clipping so it is a bad tool to use to set gains with.

Are you running dual inputs on the amp?

There are 4 things that will put that amp into protect: Speaker shorts, DC offset, High/Low voltage, Thermal protection

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