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Roll Call: Who's building, built, or thinking of building a beta22?
Jan 20, 2010 at 10:48 AM Post #2,236 of 3,218
Got a question for oneplustwo.
How hot does the reg on your JT get running it from your sigma22.
I am pondering getting a balanced JT for my B22 and may have problems shoehorning another trafo into the dual sigma22 case.
I guess i only need a tiny transformer for it. Will have to look around for options.
My plain jane 23 step attenuator just does not give me the degree of volume control i would like.
 
Jan 20, 2010 at 12:08 PM Post #2,237 of 3,218
I've done it with a wallwart before due to lack of space, I didnt like the idea at the time but now I do. I power the attenuator and AC relays via it and there is some peace of mind knowing there isn't 240v constantly flowing in something I made!
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As a side note I have a really good range and granularity with a Goldpoint 50k attenuator, infact I haven't once become stuck between steps or wished for more range. I'm really quite suprised and when I started building I was willing to accept some quirks with it but there are none. About the same price as the JT and a ton less complex, the clicking of relays is _annoying_
 
Jan 20, 2010 at 4:59 PM Post #2,238 of 3,218
Hottuna - I haven't run it very long since I know that it's not supposed to take that much voltage. But it does get quite hot in the short time I do run it. The sigma24 board that amb has along with the specified trafo is a nice small easy solution. I may just go to radio shack and get a small chassis mount trafo and be done with it.

Magsy, did you just plug in a wallwart and feed the wire through a separate hole? Or did you tear apart a wallwart and scavenge the trafo from it to feed something?

As a side note, the JT from TPA is pretty cool. Lots of steps! The only thing I still have to get used to is all the clicking as the relays turn on and off.
 
Jan 20, 2010 at 8:40 PM Post #2,239 of 3,218
If we get out of question about amping IEMs, can anybody please answer on my original question?
Quote:

Originally Posted by Bína /img/forum/go_quote.gif
Can you say me, how much is 2 Channel beta (this is for single ended right?)? Only price for parts for desks in beta, I will use power supply build by one of czech builder.

Thanks for response.


 
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Jan 20, 2010 at 8:48 PM Post #2,240 of 3,218
Quote:

Originally Posted by Bína /img/forum/go_quote.gif
Can you say me, how much is 2 Channel beta (this is for single ended right?)? Only price for parts for desks in beta, I will use power supply build by one of czech builder.


what's a desk exactly?
 
Jan 20, 2010 at 9:01 PM Post #2,241 of 3,218
I'm assuming "desks" = "boards?" The glass jar audio kits are good proxies. Jeff has one beta board listed as $92.29 so a two channel kit sans power supply would be $200 or so depending on shipping/paypal fees, etc. (Enclosure and ancillaries would be additional of course.)
 
Jan 21, 2010 at 4:04 AM Post #2,246 of 3,218
IMG00028.jpg


My camera is out of action for a little bit, this is from my cellphone. :/

I don't think I'll be a very good judge of the amp. lolz. I believe I'll be biased. XD
 
Jan 21, 2010 at 4:22 AM Post #2,247 of 3,218
Quote:

Originally Posted by EugeneK /img/forum/go_quote.gif
Just got mine done. 30 minutes ago.


congrats and enjoy
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Jan 22, 2010 at 7:06 PM Post #2,249 of 3,218
whoops. Misread some of the specs.
 
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