A New Take on the Classic Pass Labs D1 with an ESS Dac - Page 134 - diyAudio
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Old 14th November 2012, 06:54 PM   #1331
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Thanks for your efforts qusp; it's usually a thankless task - but it's very much appreciated.
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Old 14th November 2012, 06:56 PM   #1332
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Quote:
Originally Posted by qusp View Post
you spoke of increasing the input Z for the headamps, what about doubling the input for the poweramp? making it 2.4K? then i'd be happy enough with 10uf. this is why I wasnt really thinking about my own caps for a while and why I was leaving this to Pinnochio, but seemed like a good opportunity to get the pricing down, i'm fine for the LPUHP
I'm also interested to know the implications of doing such a modification. It will most certainly increase the noise if I'm not mistaken, but by how much? Or, more importantly, is the tradeoff worth it for getting better LF behaviour (for a speaker setup that is. Head amp is already covered thanks to higher input z)?

(Not that I expect the second question to be an easy one to answer...)

Or, we just buy twice as many 10uF caps

Last edited by Emphrygian; 14th November 2012 at 07:02 PM.
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Old 14th November 2012, 07:01 PM   #1333
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ZFoil

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Capacitors - Auricap XO

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Capacitors - Vcap CuTF for Bypass


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Enclosure

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Old 15th November 2012, 08:52 AM   #1334
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So, qusp, what are your thoughts on the enclosure? I read you suggested we get the sink tapped for 1xNTD1 + Salas or 2xNTD1. When you say Salas, are you thinking 4x Salas for the NTD1?

What about the back? I would like 2x XLR outputs, one USB input (pretty much the same as the XLR mounting holes as I will use Neutrik connectors), one toslink in and one IEC outlet. Somewhere I'd like a switch to turn the whole thing on; either a rocker at the back or an illuminated one on the front. For the former, a LED to show whether the whole thing is on would be nice on the front. A front display would be cool too, but I don't know when I'll have the time to get such a thing going so it's not necessary at all (for me).
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Old 15th November 2012, 09:37 AM   #1335
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board received

thanks
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Old 15th November 2012, 02:47 PM   #1336
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Quote:
Originally Posted by Emphrygian View Post
So, qusp, what are your thoughts on the enclosure? I read you suggested we get the sink tapped for 1xNTD1 + Salas or 2xNTD1. When you say Salas, are you thinking 4x Salas for the NTD1?

What about the back? I would like 2x XLR outputs, one USB input (pretty much the same as the XLR mounting holes as I will use Neutrik connectors), one toslink in and one IEC outlet. Somewhere I'd like a switch to turn the whole thing on; either a rocker at the back or an illuminated one on the front. For the former, a LED to show whether the whole thing is on would be nice on the front. A front display would be cool too, but I don't know when I'll have the time to get such a thing going so it's not necessary at all (for me).
Same for me but I would use a momentary illuminated Bulgin switch with AMB switch driver to turn the whole thing on. I've been using this combination for the longest time and it is really good.

Here's the switch I was thinking about and the switch driver
The ε24 Power Switch Driver Circuit
MPI002/28/D4 Bulgin | 708-1449-ND | DigiKey


As for the LCD hole, what would be good is that the chassis be ready, drilled and tapped but the LCD window not fully removed. Maybe leave 1/32" - 1/16" metal thickness so it would be easy to knock the piece out and sand/grind/whatever it.

Let me know if you're interested

Do
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DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III | Moon 380D DSD Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
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Old 15th November 2012, 03:30 PM   #1337
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Those who ordered in the US - boards and FETS arrived safely yesterday. Over the next couple of days I'll be getting these packed for redistribution. I'll be in contact re: shipping fees. My hope is to have them all ready to go out Monday morning.
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Old 15th November 2012, 03:46 PM   #1338
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Received boards and fets yesterday. Thanks Owen!!!

Really nice boards. Can't wait to get started on this

Do
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DACs : TPA Buffalo II + OPC's NTD1 I/V | TPA OPUS + IVY III | Moon 380D DSD Speakers : Jim Holtz Statements | Astasia SD | Tubasson Mark 2
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Old 15th November 2012, 04:18 PM   #1339
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Received my board Owen, thank you very much.
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Old 15th November 2012, 04:22 PM   #1340
opc is offline opc  Canada
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Glad to hear the boards are slowly starting to arrive!

All of this reminds me:

Algar_emi - I don't have your address... I've sent you an email that got bounced back, and a several PM's on here, none of which have been answered.

I did get your payment, but you did not include your address in the notes, so your package is still sitting on my desk without an address.

Please send me a note and let me know where to send your stuff.

Regards,
Owen
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