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Old 15th December 2012, 09:57 PM   #201
lhquam is offline lhquam  United States
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I need more voltage out of the IVY-III balanced outputs. How high can it go with higher values for R13-R16? I would like about 12 volts peak differential, with is about 8.5V RMS differential.


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Old 16th December 2012, 01:17 PM   #202
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Originally Posted by lhquam View Post
I need more voltage out of the IVY-III balanced outputs. How high can it go with higher values for R13-R16? I would like about 12 volts peak differential, with is about 8.5V RMS differential.
That's asking a bit too much (not enough headroom) You could get pretty close though as long as you use 15V rails and the impedance of the next stage is high.

I would try 470R at R13-R16 and see if that is enough gain for you. Those resistors should be closely matched to each other.

Cheers!
Russ
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Old 16th December 2012, 02:52 PM   #203
manudrz is offline manudrz  France
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How many U.fl cables do I need to connect a waveio to my b3se? 3 or 4 ? I don't know if I have to connect the master clock cable ... Thanks
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Old 16th December 2012, 03:33 PM   #204
manudrz is offline manudrz  France
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Ok answering myself, after reading this topic My thoughts on miniature coaxial RF connectors I don't know if it's a good idea to buy U'fl cables. But what kind of cables is the best for soldering I2S input from a waveIO card? Silver/Copper/PTFE ?

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Old 16th December 2012, 03:45 PM   #205
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I went for u.fl at the "WaveIO" and soldering at the buffalo end.
Tried soldering the u.fl's but it was a little bit tricky so I skipped that.

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Old 16th December 2012, 03:55 PM   #206
chryses is offline chryses  United States
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I was thinking about soldering both pin headers and u.fl connectors onto the B3-SE. Any reason I shouldn't?
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Old 16th December 2012, 03:59 PM   #207
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Yes, these things are tricky... I managed anyway... Have a WavIO board as well...
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Old 16th December 2012, 06:16 PM   #208
4est is offline 4est  United States
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Yes, these things are tricky... I managed anyway... Have a WavIO board as well...
As another Wave IO owner, it might help if you pre solder the ground ufl connections, and then tap the solder with the connector in place. Then use flux for the + pin on back. Maybe pre tin the + pin as well to get the solder to flow quick and easy.
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Old 16th December 2012, 07:51 PM   #209
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Tried soldering the u.fl's but it was a little bit tricky so I skipped that.
I made a short video on how to hand solder the u.fl connectors here: Hand-soldering u.fl connectors - YouTube

Hopefully it makes it a little easier. (Sorry for the shaking camera... I kept hitting it with my hand.)
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Old 16th December 2012, 08:13 PM   #210
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That's how I did it, but I was shaking a whole lot more i'm afraid
I've done smd before but one way or the other I found these parts difficult to solder.
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