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Ready-to-Run (RTR) SSR DC Speaker Protection and Delay GB
Ready-to-Run (RTR) SSR DC Speaker Protection and Delay GB
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Old Yesterday, 12:02 AM   #161
jwjarch is offline jwjarch  United States
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Location: San Leandro, CA
Just placed my pre-order as well! Thanks X!

xrk971 - 4 units - USA
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Old Yesterday, 12:22 AM   #162
xrk971 is online now xrk971  United States
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Ready-to-Run (RTR) SSR DC Speaker Protection and Delay GB
Quote:
Originally Posted by menlobob View Post
What's the advantage of this over a mechanical relay design?
No arcing which degrades contacts - and at worst, can weld contacts shut. No bounce, no noise, no mechanical wear - last forever.

No added distortion as I have shown.
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Old Yesterday, 05:51 AM   #163
xrk971 is online now xrk971  United States
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Ready-to-Run (RTR) SSR DC Speaker Protection and Delay GB
I just got the headphone amplifier version of this circuit to work.

Cheap as Chips OPA1688 Low-THD Muscle Amp

Click the image to open in full size.
1.00Vpp into 51ohms, Akitika 2ppm 1kHz source, FFT with SSR (4.4ppm THD):
Cheap as Chips OPA1688 Low-THD Muscle Amp-8x-opa1622-1000mvpp-51ohms-yes-ssr-jpg

Without SSR (4.2ppm THD):
Cheap as Chips OPA1688 Low-THD Muscle Amp-8x-opa1622-1000mvpp-51ohms-ssr-jpg
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