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Post by btreim on Oct 10, 2013 15:26:18 GMT -6
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Post by svart on Oct 10, 2013 15:53:02 GMT -6
Never heard of them before. Is this for dedicated listening, or just for boosting signals for musicians that are recording?
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Post by tonycamphd on Oct 10, 2013 17:05:38 GMT -6
looks pretty nice, i wonder at what frequency those cross talk and s/n specs were tested at?
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Post by jsteiger on Oct 10, 2013 21:19:17 GMT -6
Yeah that crosstalk spec seems like unobtainium to me.
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Post by btreim on Oct 11, 2013 8:52:01 GMT -6
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Post by svart on Oct 11, 2013 9:18:33 GMT -6
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Post by btreim on Oct 11, 2013 10:13:10 GMT -6
svart My knowledge of designing electronic circuits is pretty limited, so that's why I try to stick to kits. Is it completely out of the question to just use a breadboard with an IC instead of making a PC board?
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Post by svart on Oct 11, 2013 11:05:20 GMT -6
It might not be. That part is pretty small and the leads are small, which would make it difficult to solder, but there are other parts that might be easier, I don't know.
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Post by btreim on Oct 11, 2013 13:02:38 GMT -6
svart very true. I might just have to try the Brig out. It's probably best that I start with projects that have a general guide I can follow.
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Post by jimwilliams on Oct 13, 2013 12:40:26 GMT -6
I just build my own here. I have a couple of racks with them. I use a quality opamp, a CFA from National, the LME49713. I used Harris current buffers, the 5002's. Those are very linear, highly regarded and add 500 ma output current. No caps are used in the system, all direct coupled, no phase shift, zero degrees from 20~20k hz, THD is at .0006%, IMD is at .0002%. Slew rate is 2000v/us. Bandwidth is approximatly 30 mhz. Noise sits at around -110 dbu, not too bad. I used a quality power supply design and huge caps everywhere on the power supplies.
It has enough power to hurt tracking drummers. Usually I start off at around 2o'clock and wait....wait....wait...
for the drummer to feebly request, "is it possible to turn the cans down"?
It's so damn clean some don't ask, they never heard their drums sound so open and clear. It does have a useful effect, great drummers start doing "dances" on the cymbals and stuff, all excited by these new sounds they're hearing when they play.
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Post by tonycamphd on Oct 13, 2013 16:05:45 GMT -6
I just build my own here. I have a couple of racks with them. I use a quality opamp, a CFA from National, the LME49713. I used Harris current buffers, the 5001's. Those are very linear, highly regarded and add 500 ma output current. No caps are used in the system, all direct coupled, no phase shift, zero degrees from 20~20k hz, THD is at .0006%, IMD is at .0002%. Slew rate is 2000v/us. Bandwidth is approximatly 30 mhz. Noise sits at around -110 dbu, not too bad. I used a quality power supply design and huge caps everywhere on the power supplies. It has enough power to hurt tracking drummers. Usually I start off at around 2o'clock and wait....wait....wait... for the drummer to feebly request, "is it possible to turn the cans down"? It's so damn clean some don't ask, they never heard their drums sound so open and clear. It does have a useful effect, great drummers start doing "dances" on the cymbals and stuff, all excited by these new sounds they're hearing when they play. Hey Jim, would you consider building a rig for me? |
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Post by btreim on Oct 14, 2013 9:20:14 GMT -6
I just build my own here. I have a couple of racks with them. I use a quality opamp, a CFA from National, the LME49713. I used Harris current buffers, the 5001's. Those are very linear, highly regarded and add 500 ma output current. No caps are used in the system, all direct coupled, no phase shift, zero degrees from 20~20k hz, THD is at .0006%, IMD is at .0002%. Slew rate is 2000v/us. Bandwidth is approximatly 30 mhz. Noise sits at around -110 dbu, not too bad. I used a quality power supply design and huge caps everywhere on the power supplies. It has enough power to hurt tracking drummers. Usually I start off at around 2o'clock and wait....wait....wait... for the drummer to feebly request, "is it possible to turn the cans down"? It's so damn clean some don't ask, they never heard their drums sound so open and clear. It does have a useful effect, great drummers start doing "dances" on the cymbals and stuff, all excited by these new sounds they're hearing when they play. Sounds awesome. I wish I had the technical ability to conceive and execute something like this! |
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Post by tonycamphd on Oct 14, 2013 10:24:21 GMT -6
^ me too! that's why i asked, does that mean me an ben want one from jim? that's 2 lol 8)
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Post by btreim on Oct 14, 2013 11:00:38 GMT -6
^ me too! that's why i asked, does that mean me an ben want one from jim? that's 2 lol 8) Count me in! |
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Post by jimwilliams on Oct 15, 2013 9:05:03 GMT -6
Look up the apps notes for the Burrbrown buf634 at: www.ti.comBuild it as is, but use a quality low offset opamp like the LME49710. Add a servo if you use an opamp with DC offsets. You can use the buf634 as it's a DIP. I used the HA5002's mounted on a special Brown Dog adaptor. I also used the LME49713 CFA with a servo, no feedback caps on that opamp. Easy to make on a breadboard. The power supplies are more complicated than the headphone amp. |
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Post by wiz on Oct 30, 2013 16:29:05 GMT -6
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Post by keymod on Dec 15, 2013 15:44:51 GMT -6
JLM has a nice headphone amp kit listed on his website. Ooops, didn't see the Wiz already posted that
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Post by gar381 on Dec 28, 2013 1:39:13 GMT -6
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