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In Reply to: RE: OPA2134 vs OPA2604 vs OPA2107 posted by jk on December 27, 2016 at 20:54:55
If my memory is correct DQLP1 has active low-pass and passive high-pass.
Pardon my question but why play with opamps if you only "hear" them on the low bass section? Can you really hear a difference between opamps at those frequencies?
Follow Ups:
Hi, great question. I am using Alon brand stereo subs. Alon, now called Nola, is owned by Carl Marchisoto the engineer who designed the Dahlquist DQLP1. Yes, oh boy yes, the sound from the subs changes with different options amps.
I recently spoke to carl about increasing the gain on the active low pass side, turns out to be just a resistor change. I mentioned to him I was running an accurus amp for the subs. He remembered that I own an Aragon 4004 too. He advised me to put the 4004 in. Wow, he was right. It makes a big improvement.
So long way of answering, yes it makes a noticeable improvement.
Wow, I'm having battles with this android. It inserts word corrections that confuse my message.
Above I tried to say I loved how it sounded. Regarding the 2604 in the DQLP1. Sorry for the confusion.
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