First DIY Amp

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Hi,
r2 & r7 serve little purpose and could usefully be reduced by a factor of ten or even removed (linked out). It unbalnces the resistance seen by the inverting and non-inverting input pins.

On it's own C2 & C6 look to be too big but if they are coupled to the DC blocking caps in the source may be just about perfect.

However, I would fit a high quality (PP) 10uF cap in the pre-amp to feed my power amps and/or crossovers and then select the input cap to give my final 80 to 90mS roll-off (NFB=130 to 150mS & PSU=180 to 200mS).
 
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