Def Tech Supercube 3 amp replacement - ICEpower Module

[john65b]

Hey all,

I have now repaired the amp on my Def Tech Supercube III four times - there appears to be a problem in preamp section and replacement preamp is around $185. I believe the separate 1000 watt (really?) amp module to be OK.

I am thinking of ripping both units out and just dropping a ICEpower 200ASC unit in wired direct to the rca input.

My thinking is i really dont mess with phase, volume, crossover frequency, and and think wired direct should be ok, as HT receiver has a Subwoofer out that I can use to control the signal level to the module. As a sub, issues with impedance matching - HF rolloff, etc is not an issue...

Bad idea? Need that attenuation pot before the amp? Could it have a full power thump on startup / shutdown?

Also concerned about amp module in enclosed sub causing fire? I would be using the signal sense for standby mode...

Anyone done this?

 

[NBPK402]

I recently saw where a sub amp went bad, and the fix was to wire the speaker directly to the speaker terminals on the sub amp internally. Then you just find an external power amp to hoop up between your AVR, and the sub.

 

[john65b]

yes, I could do an external amp between AVR and sub, but would rather keep the module in the sub...nice and tidy

 

[john65b]

Ahh, just replaced the preamp for $180...all good again.