Jimmy designs complete home theater systems, video switching, audio switching, audio tone/volume/balance, he provides a loop for special effects like 3D decoders, and power amplifiers, "regular" stereo and subwoofer.
The last two orders of Freescale (Motorola) act funny. He orders premium units, each one comes with it's own spec sheet. The specs are within norms for his previous but the power amps sound odd, hollow, sort of like left/right mixing giving sort of L-R. Even when he only drives one channel, or both channels in mono.
The mid range, ~1kHz to ~4kHz is "wonky."
He's my age and has been considering retiring, this might decide for him.
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But he enjoys his work. He is one of the few people I'd even consider going to this level of trouble.
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I warned him we are up against physics that neither of us understand nor have the training to understand.
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He has enough older stock to complete his current orders and isn't taking additional orders until/unless we can solve the problem.
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Oddly they work fine for sub-woofer amps and low level preamps.
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Somewhere I have a file devoted to snake oil smoke and mirrors. My favorite is a set of adaptors that allow the output of a AF power amp to a NEMA 15-R with matching NEMA 15-P to wires for the speaker so you can use a standard AC extension cord.
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The insanity was so intense I didn't believe it was real, so I ordered a set. They occupy a place of shame on my radio room wall.
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I love the "hand made porcelain speaker cable lifters." They hold the speaker cables off the floor, God knows dust mites might cause distortion.
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Although I think RCA connectors and 3.5mm connectors are both abominations and crimes against nature and man.