Finally got around to dropping in the third sub today, and switching over to my APSM-1500 Amp. Running 3 12" 4ohm subs, at 1.34ohms in parallel and I've set the gains with a DMM to 500watts rms. When I set it using the 50hz tone, I set it to 30/40 (volume) on my head unit so I know that would be my 500wrms limit and I never go over it. When playing music and I go down to 29/40 it never goes into protect, only at 30/40. It goes into protect for about 3 seconds then starts up again, continues playing the track until it encounters another bass hit it doesn't like.
I have done the big 3, got an 85 Amp alternator and a standard battery (says high performance on it if that's worth anything). I had a volt meter checking the voltage while playing and it didn't always cut out at the lowest Vdrop. Sometimes it cut out at 1V of vdrop, or even at 0.2V under. So it isn't dipping low enough for that to be the problem.
Before today I was running 400wrms at 2 ohms fine on a class AB amp I have, heated up like hell. Dropped the APSM in today, runs incredibly cool but goes into protect fairly often.
I noticed playing songs which peaked at around 40hz with constant bass notes it cut out maybe 40% of the time, but then trying a song with bass hits around 26hz it cut out every time the volume was at 30/40. (Anything under 30 and it works fine).
Inb4 "it's an audiopipe", made this setup on a budget so it's second hand gear except for the amp.
Any help/tips are greatly appreciated, should be getting some 4awg wire in the mail soon and I'll be running the system at 1000wrms so I need to get this sorted. The amp I'm using it only 8awg now hence my 500wrms limit on the power.
Cheers.
edit: more info
This happens both with the car stationary and moving, so there can't be any loose connections, I've checked them all and they're all bolted down well.
I have only played the system with the car turned on, don't wan't to bump it on the battery and not have enough juice left to not be able to start the car.
Also the sound tracks I'm using aren't clipped for the most part, definitely not when it was going into protect. I rebass my music so I just checked and where it cut out, clipping from the mp3 didn't cause it. (been looking online and someone suggested this could've been the problem)
Bass Boost is also switched off on everything, off on amp and head unit, I never use it.
Each sub is in its own 1.85cf chamber in the box ported tuned to around 31.5hz.
I have done the big 3, got an 85 Amp alternator and a standard battery (says high performance on it if that's worth anything). I had a volt meter checking the voltage while playing and it didn't always cut out at the lowest Vdrop. Sometimes it cut out at 1V of vdrop, or even at 0.2V under. So it isn't dipping low enough for that to be the problem.
Before today I was running 400wrms at 2 ohms fine on a class AB amp I have, heated up like hell. Dropped the APSM in today, runs incredibly cool but goes into protect fairly often.
I noticed playing songs which peaked at around 40hz with constant bass notes it cut out maybe 40% of the time, but then trying a song with bass hits around 26hz it cut out every time the volume was at 30/40. (Anything under 30 and it works fine).
Inb4 "it's an audiopipe", made this setup on a budget so it's second hand gear except for the amp.
Any help/tips are greatly appreciated, should be getting some 4awg wire in the mail soon and I'll be running the system at 1000wrms so I need to get this sorted. The amp I'm using it only 8awg now hence my 500wrms limit on the power.
Cheers.
edit: more info
This happens both with the car stationary and moving, so there can't be any loose connections, I've checked them all and they're all bolted down well.
I have only played the system with the car turned on, don't wan't to bump it on the battery and not have enough juice left to not be able to start the car.
Also the sound tracks I'm using aren't clipped for the most part, definitely not when it was going into protect. I rebass my music so I just checked and where it cut out, clipping from the mp3 didn't cause it. (been looking online and someone suggested this could've been the problem)
Bass Boost is also switched off on everything, off on amp and head unit, I never use it.
Each sub is in its own 1.85cf chamber in the box ported tuned to around 31.5hz.
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