Go Back   Home > Forums > Amplifiers > Headphone Systems

Headphone Systems Everything to do with Headphones

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 25th June 2013, 02:11 PM   #1
roosar is offline roosar  United States
diyAudio Member
 
Join Date: Jun 2009
Default Radio Shack Digital to Analog Converter

Hello all--

I wanted to post some thoughts I had of my experience with the Radio Shack digital audio converter. I didn't find very much from googling, so I thought I'd put some (subjective) information out there for anyone else that might be interested or have some thoughts.

I play a ton of Xbox 360 and PS3 and was disappointed with the analog output from these systems (the 360 being worse than the PS3) into my cmoy headphone amp. So I decided to give the Radio Shack digital to analog converter a try--running optical PCM to the converter and using the RCA outs to drive my cmoy.

The first thing I did when I opened the box was toss the switching power supply in my parts bin and forget about it. I knew it needed a linear supply to sound good--so I hooked up a 6v power supply using an LM317 and a massive 6800uF cap paired with a 100nF on the input. The power supply is dead quiet when hooked up to the converter (mine is the Tangent design and has gain of 11--so low noise is imperative).

Next I cracked the case--the main 'Digital Audio Interface Receiver' chip is the Cirrus Logic 8416-CZZ. I don't know much about this chip, but it seems pretty much up to the task upon some subjective listening tests.

Once everything was wired up, I was VERY pleased with the result. Since the optical cable is plastic/glass it isolates the source from the DAC, which I found to be the culprit of much of the noise. One note to make is that the output level isn't as high a voltage as standard line level. I don't have a sensitive enough AC meter to measure a 1khz signal at -0 db but I'd guess it is in the 200mV range rather than around 1.25 volts. This works well for my headphone amp (at gain 11...ouch), but may be unable to drive some line level devices without a buffer stage with a bit of gain.

Overall the sound output when playing games is very pleasing to me. I'd be crushing my ears before I heard any of the noise floor from the DAC, and even then, it is just white noise--no buzzing or squealing.

Thanks for reading!


--Robert

Last edited by roosar; 25th June 2013 at 02:15 PM.
  Reply With Quote
Old 26th June 2013, 02:32 AM   #2
diyAudio Member
 
Speedskater's Avatar
 
Join Date: Sep 2002
Location: Lakewood, Ohio
What's the RadioShack part number? Is this a current model or is it vintage?
__________________
Kevin
  Reply With Quote
Old 8th July 2013, 02:07 AM   #3
roosar is offline roosar  United States
diyAudio Member
 
Join Date: Jun 2009
Default Part number

DA-710 is the listed model number on their website

Catalog number is 15-093
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Radio Shack Digital Wireless Audio Link Modifications gni Solid State 6 19th October 2013 03:29 AM
WTB: Radio Shack SPL meter (preferably digital) Frosteh Swap Meet 0 24th July 2012 08:45 PM
A question about the Radio-Shack (Tandy) 22-175b digital multimeter gaetan8888 Equipment & Tools 1 1st December 2007 01:26 PM
FS: Radio Shack Analog Sound Level Meter Javachip Swap Meet 2 23rd October 2007 02:58 PM
Digital to Analog converter condor655 Digital Source 4 15th May 2003 10:02 PM


New To Site? Need Help?

All times are GMT. The time now is 10:11 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2