Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

The Phonoclone and VSPS PCB Help Desk
The Phonoclone and VSPS PCB Help Desk
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th May 2019, 09:08 PM   #4141
daemonsgr is offline daemonsgr  United Kingdom
diyAudio Member
 
Join Date: Jun 2014
Location: London (UK) / sometimes Greece
Hi all,

Im half way there (drilling and finalising is at least the 50% :P )

A couple of questions:
Can I put all inputs, outputs and power XLR all at the back?
XLR in the middle (lower than mid horizon) and in/out left and right.

As you can see my box is a bit tight and I pushed the boards towards the front to leave space at the back.

Will I get interference?
Attached Images
File Type: jpg DSC03689.jpg (362.6 KB, 191 views)
  Reply With Quote
Old 10th May 2019, 01:52 AM   #4142
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
The Phonoclone and VSPS PCB Help Desk
@daemonsgr

Your case is too small. Even if you get it all hooked up and working, it will cause you much pain and grief. Trust me. Been there, done that.

What I recommend though is to mount the XLR and RCA on the side face of the case as you have it pictured, rather than the back. The XLR goes on near the filter caps, the input RCA furthest away, and the output RCA next to the input, with the ground lug about middle.

See attached photos for various photos of builds in my bad old days before I started using reasonable sized cases.

The important point is to route the input wires well away from anything resembling unregulated power, while keeping the input wires as short as possible.
Attached Images
File Type: jpg DSC_0982s.jpg (211.4 KB, 198 views)
File Type: jpg DSC_8194.jpg (243.0 KB, 195 views)
File Type: jpg pc2.jpg (89.6 KB, 189 views)
__________________
RJM Audio | phonoclone.com
  Reply With Quote
Old 11th May 2019, 05:39 AM   #4143
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
The Phonoclone and VSPS PCB Help Desk
For the first time in ages the VSPS web page has been given an update.

The decision to remove the Allen Wright time constant has been propagated back to the project page, so the boards and the project circuits are consistent again.
__________________
RJM Audio | phonoclone.com
  Reply With Quote
Old 12th May 2019, 05:39 PM   #4144
WntrMute2 is online now WntrMute2  United States
diyAudio Member
 
WntrMute2's Avatar
 
Join Date: Jan 2010
Quote:
Originally Posted by daemonsgr View Post
Hi all,

Im half way there (drilling and finalising is at least the 50% :P )

A couple of questions:
Can I put all inputs, outputs and power XLR all at the back?
XLR in the middle (lower than mid horizon) and in/out left and right.

As you can see my box is a bit tight and I pushed the boards towards the front to leave space at the back.

Will I get interference?
I have to agree with Richard. Your case seems way too small. Not that you can't cram all the stuff in there but you are making it tough to keep stray signals from influencing desired signals.
My last build with no wire twisting or extra shielding is as quiet as can be. Wires are spaced away from each other both horizontally and vertically. Worked far better than anticipated. Case is 11" x 9" x 2 1/4".
Attached Images
File Type: jpg IMG_20190421_131109.jpg (996.9 KB, 159 views)
  Reply With Quote
Old 12th May 2019, 09:01 PM   #4145
daemonsgr is offline daemonsgr  United Kingdom
diyAudio Member
 
Join Date: Jun 2014
Location: London (UK) / sometimes Greece
Yeap ill have to rethink my plan!
As I have the chassis I was planning to at least try. Usually it goes wrong the first time so my next order will be bigger.
  Reply With Quote
Old 13th May 2019, 12:02 AM   #4146
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
The Phonoclone and VSPS PCB Help Desk
Quote:
Originally Posted by WntrMute2 View Post
Wires are spaced away from each other both horizontally and vertically. Worked far better than anticipated. Case is 11" x 9" x 2 1/4".
Neverless it is good practice to twist the positive and return wires together to minimize inductive noise pickup.
__________________
RJM Audio | phonoclone.com
  Reply With Quote
Old 13th May 2019, 09:09 AM   #4147
daemonsgr is offline daemonsgr  United Kingdom
diyAudio Member
 
Join Date: Jun 2014
Location: London (UK) / sometimes Greece
Quote:
Originally Posted by rjm View Post
Neverless it is good practice to twist the positive and return wires together to minimize inductive noise pickup.
Plastic or metal (brass) standoffs all around?
I dont believe ground plane is touching. So no ground loops?!
  Reply With Quote
Old 14th May 2019, 12:40 AM   #4148
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
The Phonoclone and VSPS PCB Help Desk
Quote:
Originally Posted by daemonsgr View Post
Plastic or metal (brass) standoffs all around?
I dont believe ground plane is touching. So no ground loops?!
The mounting holes are isolated from the ground plane / circuti common - a deliberate decision - so the standoffs can be metal or not it doesn't matter. The boards are connected to the chassis explicitly via the GND pad.
__________________
RJM Audio | phonoclone.com
  Reply With Quote
Old 17th May 2019, 06:29 AM   #4149
tribute is offline tribute  Australia
diyAudio Member
 
Join Date: Oct 2017
Default Powering the PhonoClone

Hi, I am thinking of buying your P/Clone kit. Can I power them using a 24 VDC 25W Ultra Low noise supply. Then use two of these (1 / board) transistors to provide the +/- voltage to the boards.

2pcs TLE2426CLP - Texas Instruments - Voltage References 1/2Railvtl G | eBay

Cheers
  Reply With Quote
Old 18th May 2019, 12:56 PM   #4150
rjm is offline rjm  Japan
Richard Murdey
diyAudio Member
 
rjm's Avatar
 
Join Date: May 2004
Location: Kyoto
The Phonoclone and VSPS PCB Help Desk
Sure. I mean a virtual ground is never as good as the real thing, but it should work just fine all the same.
__________________
RJM Audio | phonoclone.com
  Reply With Quote

Reply


The Phonoclone and VSPS PCB Help DeskHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 03:58 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki