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Old 15th October 2012, 10:25 PM   #501
billo44 is offline billo44  United Kingdom
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Finally got my FE RC build working today....
I will wait a week or so before getting too sentimental, but the sound is already very good after a few hours...
Thanks Dario, it's sounding good!
Bill
I've been using my FE build for a couple of weeks now, and it really sounds great.
Playing CD on a shigaclone through Peter Daniels NOS DAC, into a lightspeed then out into a pair of recently re-built Yamaha NS10 monitors (still on the bench).

I did try to disconnect the ground loop breakers from the FE modules as you suggested Dario, and I could hear no difference. I'll try that again later.

I'm not too keen on talking about how things sound, but... IMHO...
The soundstage (don't really like that term either, makes me think of a film set,...) is one of the key improvements of this build over the Rev C ultimate, very well defined sense of 3D from only two sources.
String instruments, like bass sound really good (Scott Le Faro, on Waltz for Debbie by Bill Evans), the bass is as warm as I could expect through fairly harsh NS10 speakers, you can hear all the frets and fingers, it's gorgeous.
Really good definition of most instruments (assuming they are well recorded), not too harsh, not too rich.
Very pleased! Really good sounds!

I did use the sockets for input to the boards, so I am able to try an Alps blue pot and various input capacitors in place of the current obligato and lightspeed combo, when I can find the time to stop listening...



Marra, I hope you find the problem soon, its worth persevering!

Thanks Dario!

Bill
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Old 15th October 2012, 10:32 PM   #502
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Originally Posted by billo44 View Post
I've been using my FE build for a couple of weeks now, and it really sounds great.
I'm happy you like the amp

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Originally Posted by billo44 View Post
I did try to disconnect the ground loop breakers from the FE modules as you suggested Dario, and I could hear no difference. I'll try that again later.
Good to know, so it seems the ground breaker has no evident impact on sound.

If you connect PGND to safety earth, on the contrary, soundstage suffer a lot.

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Thanks Dario!
You're welcome
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Old 16th October 2012, 10:19 AM   #503
Marra is offline Marra  United Kingdom
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I've reordered some components and replacing/resoldering all the smd's.Stuff should arrive tomorrow.
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Old 16th October 2012, 10:22 AM   #504
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I've reordered some components and replacing/resoldering all the smd's.Stuff should arrive tomorrow.
Why you want to replace all smd stuff?

SMD resistors are pretty sturdy...
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Old 16th October 2012, 10:48 AM   #505
bcmbob is offline bcmbob  United States
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Dario, do you have any information on how much heat the smd components can take? There is a good possibility I went overboard by reheating some pieces several times in an attempt to straighten the lay on the PCB.

I'm suspecting they might be related to the hum problem I'm having when attaching some pre/gain devices - even though the noise completely disappears with the FE - Mini 2496 combination.
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Old 16th October 2012, 11:15 AM   #506
Marra is offline Marra  United Kingdom
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My first attempt with smd's did'nt look very neat so I thought that instead of trying to straighten things out it would be easier to start from scratch.
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Old 16th October 2012, 11:20 AM   #507
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My first attempt with smd's did'nt look very neat so I thought that instead of trying to straighten things out it would be easier to start from scratch.
I understand.

Do whatever makes you feel more confident.

Can't wait to have your opinion when both modules will sing
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Old 16th October 2012, 11:21 AM   #508
Marra is offline Marra  United Kingdom
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I'm really looking forward to listening thats for sure.
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Old 16th October 2012, 11:24 AM   #509
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There is a good possibility I went overboard by reheating some pieces several times in an attempt to straighten the lay on the PCB.
It depends on how much time and how many reheating you've done.

Like most parts soldering time should not exceed 10 continuos seconds, I would say.

BTW, if parts measure right they should be fine.

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I'm suspecting they might be related to the hum problem I'm having when attaching some pre/gain devices - even though the noise completely disappears with the FE - Mini 2496 combination.
I'm a bit skeptic about that but you can try to replace those resistors with a reasonable expense.
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Old 16th October 2012, 12:26 PM   #510
bcmbob is offline bcmbob  United States
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I'm a bit skeptic about that but you can try to replace those resistors with a reasonable expense.
You are probably correct as evidenced by the Fe/MiniDac results. But at this point I'm willing to grab onto any excuse that comes along.
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