Where have you got that opamp stuffed?
Had a google for it and the Texas instrument boys said this little fellow gave considerably better performance.
Operational Amplifier (Op Amp) - High Speed Amplifier (>=50MHz) - LMH6622 - TI.com
May or may not be of interest to you
Had a google for it and the Texas instrument boys said this little fellow gave considerably better performance.
Operational Amplifier (Op Amp) - High Speed Amplifier (>=50MHz) - LMH6622 - TI.com
May or may not be of interest to you
Back on thread. (No, I don't mind the hijack. Keep it up. I am learning a few things outside of my skill set.)
Swapped out the A10P's for A7.3's. Oh, my! Now I remember why the A7.3's have always been my favorite MA drivers. The A10's have been banished to the HT for a month. They either need way more break-in, or indeed the A7.3's are much smoother.
I was having a problem with a hole in the FR around 200Hz. I suspect a combination of floor and ceiling bounce. Offsetting the XO went a long way to fixing it. Usually, the gentler slope is put on the top, but I have 200Hz LR12 on the bottom and 150Hz LR48 on the top. The acid test for me is to run a cello up and down over the XO. Passed.
Second interesting finding, but I knew this all along. I EQ's the system flat 20-20K (well, 15K anyway). The overall sound was a bit flat and thin. So I built a F-M EQ curve in the music player with 6dB boost at 20Hz. It's wonderful! I guess we are all bassheads at heart, aren't we?
A final note. Over at the MA forum, most everyone is clamoring for a very light paper woofer to put under their wide rangers. Got to have a "fast" woofer, you know. Darn it! My massive aluminum subs integrate beautifully with the A7's. Once you have felt a true 20Hz note, you can't go back.
Bob
Swapped out the A10P's for A7.3's. Oh, my! Now I remember why the A7.3's have always been my favorite MA drivers. The A10's have been banished to the HT for a month. They either need way more break-in, or indeed the A7.3's are much smoother.
I was having a problem with a hole in the FR around 200Hz. I suspect a combination of floor and ceiling bounce. Offsetting the XO went a long way to fixing it. Usually, the gentler slope is put on the top, but I have 200Hz LR12 on the bottom and 150Hz LR48 on the top. The acid test for me is to run a cello up and down over the XO. Passed.
Second interesting finding, but I knew this all along. I EQ's the system flat 20-20K (well, 15K anyway). The overall sound was a bit flat and thin. So I built a F-M EQ curve in the music player with 6dB boost at 20Hz. It's wonderful! I guess we are all bassheads at heart, aren't we?
A final note. Over at the MA forum, most everyone is clamoring for a very light paper woofer to put under their wide rangers. Got to have a "fast" woofer, you know. Darn it! My massive aluminum subs integrate beautifully with the A7's. Once you have felt a true 20Hz note, you can't go back.
Bob
I do like Bach's Cello Suites, have an EMI Classics recording by Paul Tortelier of suites 1 to 6... Yo-yo Ma certainly, Julian Lloyd Webber also
Just about to order a second pair of A7's for some sealed enclosures. I want to keep my FH3 fitted A7's where they are, as they're lovely sounding speakers. I only have a selection of old Mission speakers to compare them to, which just can't compete.
Just about to order a second pair of A7's for some sealed enclosures. I want to keep my FH3 fitted A7's where they are, as they're lovely sounding speakers. I only have a selection of old Mission speakers to compare them to, which just can't compete.
Well, let's see. My A7.3's have been in the HT for 2yr, say 4hr/day, 6days/week, 300 days/year. That's 14400hr. Yep. They are broke in!
Bob
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