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Old 7th August 2012, 09:15 PM   #191
rondr is offline rondr  United States
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My first attempt working with SMDs. A Bal-SE version of The Wire with a PSU and a Sapphire in a 19" rackmount case. Pots are 10k.

RR
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Old 7th August 2012, 09:22 PM   #192
opc is offline opc  Canada
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Absolutely stunning! Now that's a finished project to be proud of

I honestly can't see a single thing that could be improved. You managed a great layout, that looks like an excellent balanced stepped attenuator, and you kept the output run nice and short with the transformer a decent distance from the board itself.

Kudos on the great work

You'll have to report back with listening impressions when you get around to it.

Cheers,
Owen
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Old 7th August 2012, 11:18 PM   #193
PelPix is offline PelPix  United States
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How would this thing handle my DAC's hefty 2VRMS output? I used an O2 for a while, but it slowly fried U1 without the highest possible voltage of converter.

Last edited by PelPix; 7th August 2012 at 11:22 PM.
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Old 7th August 2012, 11:23 PM   #194
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2VRMS ... no dramas here.

That really shouldn't be any drama with your O2 either though, I'd check the O2 before hunting for another amp if that is the only reason you're looking for another amp.

I've got an O2 and prefer my 'The Wire' headphone amp though ...
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Old 7th August 2012, 11:48 PM   #195
PelPix is offline PelPix  United States
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Quote:
Originally Posted by hochopeper View Post
2VRMS ... no dramas here.

That really shouldn't be any drama with your O2 either though, I'd check the O2 before hunting for another amp if that is the only reason you're looking for another amp.

I've got an O2 and prefer my 'The Wire' headphone amp though ...
I might have just had a bad U1
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Old 8th August 2012, 12:12 AM   #196
opc is offline opc  Canada
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Hi PelPix,

If you set the gain to 1 (which it is by default) and the rails to +/-15 or 16V then you could feed a full 9VRMS to the inputs without any issues.

2VRMS would not be an issue.

Cheers,
Owen
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Old 8th August 2012, 11:53 AM   #197
qusp is offline qusp  Australia
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yes, we do not have any troubles with clipping on standard (if slightly hot) line level input signals here …

great looking build rondr!
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Old 9th August 2012, 10:43 AM   #198
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Default Happy happy, Joy joy...

iirc, the O2 should be capable of handling upto 2.8VRMS before troubling the input section...

Can vouch for the Wire se-se being happy with 2VRMS from an ODAC and 2.16VRMS from a CD player.

Built up a second Wire & psu's last week, so while the iron was hot I replaced the 1K input resistors on my original build with 0R jumpers [used with an Alps RK27 10K pot]... Overall volume has increased slightly and it appears to have opened up the dynamic range of recordings a little more.

This last month I've been using The Wire for listening duties with movies also... the DD & DTS high-def tracks are amazing, shame I don't get this level of detailing from my AV amp. The fan on the projector probably doesn't help here either...

Over all am super happy with The Wire

Paul.
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Old 21st August 2012, 09:45 PM   #199
Mull3t is offline Mull3t  United States
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BuildMeSomething... did you mean 10k input resistors?

Finally finished my SE-SE. Bought a custom case from eBay and I'm quite happy. My only wish was that the amp was smaller but my choice for a power supply dictated a slightly larger case. Anyhow, things are going quite swimmingly with the amp. Here's some pics...


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Last edited by Mull3t; 21st August 2012 at 09:48 PM. Reason: Bad pics
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Old 22nd August 2012, 03:04 AM   #200
rondr is offline rondr  United States
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That's a great looking build Mull3t. Love the wood sides and the layout is fantastic. How's it sound once it's up to operating temp?
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