Audio gurus, whats happening?! Haven't been in here in a while, as everything has been going great with the new system until now. Here is what I have installed:

Alpine MRV-F450 Amp w/ front channels running Infiniti Perfects.

Last weekend I popped open my doors to set the little jumpers in the crossovers to the -4dB position b/c the highs from the tweets were killing me! Since then, everything has sounded great w/ the highs in check and getting my EQ tuned so everything is in balance. But twice now I have had the amp go into protect mode, which shuts off the fronts until I turn the HU off and back on. The first time it happened I thought I had blown them out! That first time was from user error, but yesterday it was caused by some highs in a certain track.

Question is: do I need to make a gain adjustment on the amp since I moved the jumpers to the -4dB position in the crossover? It only makes sense, but I wanted to get more authoritative opinions


Lastly: search feature is terrible: "Amp Safe Mode" title only search returns 23 pages of threads

 

ttt

So no ideas here?

 

What was the "user error" the first time? Also are the Highs wired at 2 OHMS or 4 OHMS? Sounds like your audio section in the amp is drawing excessive current or you have a faulty protection circuit. Couldn't tell with out looking over the setup an possibly benching the amp.

 

is your amp 2 ch or 4 ch
how many pair of speakers is this amp runnning
what ohm are the speakers that this amp is running

 

The amp is 4 channel. The fronts are running the Infiniti 6.1 Perfect components at 75W @ 2 ohms. The rear channels are bridged and are running my sub @ 300W. This hadn't happened until I switched the jumpers on the Infiniti crossover from 0dB to -4dB, so as to lower the harsh highs. I used the stock speaker wiring during install, except from the crossover to the speaker wiring harness in the door.

The user error the first time: I have the PAC-SWIX so that I could retain steering wheel control. There is a delay on the buttons; I went to turn the volume up, held it too long to overcome the delay, and it jumped up past my gain level.

Thanks for your replies, fellas.

 

try puttin the crossovers back were they were set before just to see if problem was related to that

 

i ahve never seen highs adjustment cuasing an amp to go into protect mode, i say:

1. faulty wiring

2. faulty wiring in the xover

3. faulty amp

 

Could the gain be to blame? When I first tuned the system, I had a tuning .mp3 for highs; played it while I raised the gain on the amp until it started to clip (tone change), then turned it down one notch to where it wasn't clipping.

I am going to try to reproduce the problem tomorrow using the same track, turn the gain down on the amp, repeat. I would hate for it to be faulty anything , as this stuff is a pain in the azz, so I am going to see first if it is something I did wrong in the set up.