I did play on the mod, replace the existing OpAmp to OpAmp627 and 2 more (cant remember model). Sound improves a lot after that.
New Perpetual P1/P3 configuration
I have been busy modding a P-3A for a customer, who also asked me to design a new I2S cable. Since this is a proto, I am doing this for free for him.
Anyway, here is what I discovered:
After the P3 mods, the P1/P3 in typical configurations sounds a bit better, but the P3 still sounds better alone, and with the mods, MUCH better, with one exception. If I connect the I2S cable ONLY to the P1, the P3 imaging gets even better with horns becoming more coherent and solid. The cable I made improves this even more with better HF extension. I am not sure what the P1 is doing for the P3 in this configuration (which I call #5), but I really like it. I will be doing some scope probing this afternoon to try to determine what is happening.
Anyway, here is what I discovered:
After the P3 mods, the P1/P3 in typical configurations sounds a bit better, but the P3 still sounds better alone, and with the mods, MUCH better, with one exception. If I connect the I2S cable ONLY to the P1, the P3 imaging gets even better with horns becoming more coherent and solid. The cable I made improves this even more with better HF extension. I am not sure what the P1 is doing for the P3 in this configuration (which I call #5), but I really like it. I will be doing some scope probing this afternoon to try to determine what is happening.
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