Re: Crest repair center needed
The strongest chain will always have a weakest link. The science of reliability engineering for power amps gets a little circular. After you beef-up, fuse, or parallel, every component that ever failed, you end up with a 20W power amp that weights 20#, and all the extra parts are just more things that could break. After decades of experience, reliable for a price that the market will support emerges.
You have already second-quessed the packaging. I can only say that even with perfect hindsight is it not quite that easy.
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Good luck with your pursuit. I trust you are also working to get the amps repaired and either back in service, or sell them if you no longer trust them.
JR
PS: Back a few decades ago I killed a bunch of brain cells, looking into what it would take to make a power amp that can't be blown up. I found back then you quickly get into diminishing returns for the extra money spent. Modern amps are generally more reliable for the simple reason that more efficient amp topologies generate less heat, and heat kills. MTBF drops in half for every 10'C temp rise, so cooler amps run longer (all else equal).
