i dont understand whats going on here
Hifonics BXi1606D amp
2 RF Punch HX2s wired to 1ohm
PG Line Driver

ive been running this setup for abit now with no issues and nothing has changed in my setup including settings and now when i have the stereo going loud the amp goes into protection most of the time, sometimes it doesnt though and when it plays fine it sounds good like it always did

gain is only at half on the amp, line driver is pretty close to maxed out...any ideas whats going on here?

 

are the subs/coils ok?

 

im gonna goto the car in a few minutes to check with a DVM, that was my first guess but found it odd that it works sometimes or all the time if i turn the line driver down abit

 

Amps go into "protection" when their comparator circuit see current passing through the outputs past a designed limit.

Current can flow excessively because:

1) You have a short circuit in your speaker system. It can be as stupid as a strand of wire peaking out of a connector. Physically check all connections.

2) You have a sub that is toast. The voice coil may have sustained thermal damage and unwound off the former. This can cause it to rub on the pole, causing a short. It may be slight, but enough to cause an over-current situation.

The other option is that the protection circuitry in the amp is faulty.

There have been cases where poor current supply to the amp from your electrical system can cause this problem.

 

instead of 1ohm it reads 2.8, took 1 sub out and the one coil reads 4.7 and the other 1 VC reads NOTHING! i might cut teh dustcap off to see if something happened to the tinsel leads

 

thats your problem more than likely. a sub or a coil could be shorting out, thus, sending your amp into protection. or one coil could be out and imp drops below minimum.

 

Be carefull....I have seen a cople of hifonics, fail from nothing!!!!

If you have a blown sub...you have to check your gains and box tuning.

 

gain was only at 50% and box was 6.66 cubes @ 35Hz

 

50% doesn´t mean that it was ok...this control has to be adjusted depending on the voltage received from your deck...
Usually you can listen distortion if you use a 50 hz wave, when doing this setting.
I hope to be clear...

 

HEC what is the voltage coming out of the line driver? is it the PLD1 driver? your input voltage could be too high. You should not need more than 2-3 volts of input.