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

Digital Source Digital Players and Recorders: CD , SACD , Tape, Memory Card, etc.

Lampizator Sound Card
Lampizator Sound Card
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
Thread Tools Search this Thread
Old 13th December 2012, 09:09 AM   #1
Feagil is offline Feagil  South Africa
diyAudio Member
Join Date: Apr 2012
Default Lampizator Sound Card

Hi everyone

I am trying to modify my Asus Xonar Stx sound card with the Lampizator upgrade and I need some help understanding the balanced outputs. The PCM1792 has a Iout+ and Iout- for the left and right channel respectively. I think I understand I need to make 4 Lampizator circuits to convert each of those I outs in to differential Voltage outputs. The ground of the lampizator circuit must be tied to each channel's ground on the PCM1792. My amplifier currently only has inputs for RCA Single ended inputs.

How do I take these four Vouts from the I/V stage and convert them in to Single ended?

Or is there a way to take the differential output at the chip and make it single ended before the Lampizator (saving me 2 valves)? I have heard you sometimes tie I- to ground but I worry about damaging my sound card.

The link for the DAC's datasheet is here.

Thanks so much for the help.

  Reply With Quote
Old 13th December 2012, 10:13 AM   #2
lcsaszar is offline lcsaszar  Hungary
diyAudio Member
Join Date: Mar 2004
Location: Budapest, Hungary
A current output can be safely grounded.
  Reply With Quote
Old 13th December 2012, 08:23 PM   #3
Feagil is offline Feagil  South Africa
diyAudio Member
Join Date: Apr 2012
Thanks Oshifis, I suppose you are right. If I do ground Iout- would that mean Iout+ will output the whole of the signal? I can then simply build a Lampizator for the 2 Iout+ pins and ground the Iout- pins without any loss of signal quality?

Balanced outputs might be nice to have when I have the budget / knowledge to make a preamp that can take balanced inputs so I might make the 4 outputs in the end. If I do can I still simply use the Iout+ pins for the single ended RCA outputs and leave the Iout- going through the small resistor for the Lampizator without signal quality loss?

Thanks again for the help.

  Reply With Quote


Lampizator Sound CardHide 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
how to mix sound from notebook and external sound card and get headphones output burence73 Headphone Systems 17 29th December 2012 07:58 PM
Creative Sound Blaster X-Fi sound card w/upgrade GOWA Swap Meet 0 12th August 2012 09:05 PM
FS: LampizatOr Digi Lampizator kits (2) Gopher2K Swap Meet 0 7th June 2012 07:08 PM
PC sound card sound chips kaluchka Chip Amps 6 20th June 2011 03:48 PM
How Lampizator CD tube player sound? Akita Digital Source 71 13th January 2011 07:47 AM

New To Site? Need Help?

All times are GMT. The time now is 11:46 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio