A New Take on the Classic Pass Labs D1 with an ESS Dac - Page 134

MisterRogers · 14th November 2012, 05:54 PM

Thanks for your efforts qusp; it's usually a thankless task - but it's very much appreciated.

Emphrygian · 06:02 PM

Quote:

Originally Posted by qusp

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

Emphrygian · 14th November 2012, 06:01 PM

ZFoil

Qusp
Pinnocchio
MisterRogers
Rolle
BigPandahk
Reenberg
lwif
analog_sa
atom6422
crazikid
flocchini
vitalica
hirez69
lm1no2
Coolhead
ccliu
macfixer
tehrkn
Blitz
Slartibartfasst
necplusultra
Regland
woresseo
Malvin
Greg Stewart
Emphrygian

Capacitors - Auricap XO

Pinnocchio
Bigpandahk
reenberg
lwif
atom6422
crazikid
MisterRogers
hirez69
lm1no2
Coolhead
ccliu
macfixer
tehrkn
necplusultra
Regland
woresseo
vitalica
Greg Stewart
Emphrygian

Capacitors - Vcap CuTF for Bypass

Keratherm

Pinnocchio
bigpandahk
Reenberg
Rolle
hirez69
lwif
atom6422
crazikid
flocchini
MisterRogers
lm1no2
Coolhead
ccliu
macfixer
tehrkn
kasey197
Blitz
Slartibartfasst
necplusultra
woresseo
Malvin
Greg Stewart
Emphrygian

Enclosure

Pinnocchio
Rolle
crazikid
MisterRogers
ccliu
qusp
woresseo
vitalica
Emphrygian

Emphrygian · 15th November 2012, 07:52 AM

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).

necplusultra · 15th November 2012, 08:37 AM

board received

thanks

pinnocchio · 15th November 2012, 01:47 PM

Quote:

Originally Posted by Emphrygian

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

MisterRogers · 15th November 2012, 02:30 PM

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.

pinnocchio · 15th November 2012, 02:46 PM

Received boards and fets yesterday. Thanks Owen!!!

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

Do

Jean-Charles · 15th November 2012, 03:18 PM

Received my board Owen, thank you very much.

opc · 15th November 2012, 03:22 PM

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

15th November 2012, 02:46 PM	#1338
pinnocchio Just DIY! diyAudio Member Join Date: Sep 2010 Location: Montreal	Received boards and fets yesterday. Thanks Owen!!! Really nice boards. Can't wait to get started on this Do __________________ PREAMPs : AMB α10 + JC-80 clone \| Balanced DCB1 \| AMPs: AMB β24 \| Aleph 5 \| Symef \| Hiraga \| ML-2 \| Fetzilla \| Telos 390 Clone DACs : TPA Buffalo II + NTD1 I/V \| TPA OPUS + IVY III Speakers : Jim Holtz Statements \| Astasia SD \| Tubasson Mark 2

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14th November 2012, 05:54 PM	#1331
MisterRogers Can you say Audio? diyAudio Member Join Date: Aug 2011 Location: Aliso Viejo, California	Thanks for your efforts qusp; it's usually a thankless task - but it's very much appreciated.

14th November 2012, 06:01 PM	#1333
Emphrygian diyAudio Member Join Date: Mar 2007	ZFoil Qusp Pinnocchio MisterRogers Rolle BigPandahk Reenberg lwif analog_sa atom6422 crazikid flocchini vitalica hirez69 lm1no2 Coolhead ccliu macfixer tehrkn Blitz Slartibartfasst necplusultra Regland woresseo Malvin Greg Stewart Emphrygian Capacitors - Auricap XO Pinnocchio Bigpandahk reenberg lwif atom6422 crazikid MisterRogers hirez69 lm1no2 Coolhead ccliu macfixer tehrkn necplusultra Regland woresseo vitalica Greg Stewart Emphrygian Capacitors - Vcap CuTF for Bypass Keratherm Pinnocchio bigpandahk Reenberg Rolle hirez69 lwif atom6422 crazikid flocchini MisterRogers lm1no2 Coolhead ccliu macfixer tehrkn kasey197 Blitz Slartibartfasst necplusultra woresseo Malvin Greg Stewart Emphrygian Enclosure Pinnocchio Rolle crazikid MisterRogers ccliu qusp woresseo vitalica Emphrygian

15th November 2012, 07:52 AM	#1334
Emphrygian diyAudio Member Join Date: Mar 2007	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).

15th November 2012, 08:37 AM	#1335
necplusultra diyAudio Member Join Date: Jan 2011 Location: sitting down	board received thanks

15th November 2012, 02:30 PM	#1337
MisterRogers Can you say Audio? diyAudio Member Join Date: Aug 2011 Location: Aliso Viejo, California	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.

15th November 2012, 03:18 PM	#1339
Jean-Charles diyAudio Member Join Date: Oct 2004 Location: Ste-Agathe des Monts	Received my board Owen, thank you very much.

15th November 2012, 03:22 PM	#1340
opc diyAudio Member Join Date: Oct 2004 Location: Ottawa, Ontario, Canada	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