On-board subwoofer amps - limited shelf life ?


Both me and my hi-fi godfather purchased subwoofers for 2-channel systems in 2000, I got a PSB Subsonic 5, he got a Monitor Audio FB 210 for his Monitor Audio speakers.

Both our subwoofers failed this year, mine a victim of a power surge, his blown up by his teenager sons.

Are subwoofer amps worth replacing/difficult to replace? Do we have to go up to the REL/Velodyne level to get a longer lasting sub? Anybody have good things to say about Von Schweikerts, James, or Supercubes? Thanks ahead of time.
feaoce

Showing 3 responses by johnk

I think the problem lies with stand bye modes on afordable sub plate amplifiers many of my sub amps run hot even in stand bye, since amps on pretty much always and sub amplifiers in general dont seem to have enofe heat sink area they heat up causing early amp failers.When you look at prices that many subwoofers go for its no wonder they dont use high quality amplifiers.I have seen posts about REL amp problems but so far no velodynes.As far as replacement amps if you can find a plate amplifier that fits cut out on back of your sub you can change them out with little trouble.Madisound or parts express stock sub plate amps.
undertow the sub amps I have are digital and still run hot as all heck. I have never seen a sub amp fail due to vibration but I have seen many fail due to heat.
The dig plate amp that runs hot is a keiga. I have had 6 now all the 1000 watt run hot even on stand by, madisound had early units fail keiga made a few changes, but I could cook a egg on it;) When its running not so hot, but on stand by heat builds so I just turn it off and on when needed.I have had good luck with hypex plates still enjoy the big keigas just worry how long they will last.