DIY Audio Projects Forum
 NEW  Matt presents bias and operation data for the 6V6 tube in SE operation - 6V6 Single-Ended (SE) Ultra Linear (UL) Bias Optimization.

DIY Audio Projects Forum

Welcome to the DIY Audio Projects Message Forum. Use these forums to discuss Hi-Fi audio and to share your DIY Audio Projects. Registration is free and required to post messages and view the file attachments. Registration will only take a minute and registered users do not see any advertisements. After you have completed the online registration process, check your email (including spam/junk folder) for the verification email to activate your account. New members are under moderation - so your posts will not be visible until approved by a moderator. See the Read Me 1st, Forum RULES and Forum FAQ to get started on the forum.

It is currently 22 Jan 2021, 08:38

All times are UTC - 6 hours [ DST ]

Post new topic Reply to topic  [ 1 post ] 
Author Message
 Post subject: Aux Input Old CD Players
PostPosted: 22 Nov 2014, 22:15 

Joined: 22 Nov 2014, 22:09
Posts: 1
Hello forums, Ive been working on adding aux inputs to some old cd players i got laying around doing nothing, so far i got the required info of one of them and i understand a good portion of it:

Datasheet: ... A4227.html

The In1 and In2 are obviously L/R channels but i got a bit lost on the GND one, should i use the PREGND or im missing something?.

Also, is the PRE-GND related to the Vcc, or AC, ground of the device? or its something completely different with a good chance of frying the mp3 player/cellphone?


Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 1 post ] 

All times are UTC - 6 hours [ DST ]

Who is online

Users browsing this forum: No registered users and 5 guests

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  
DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Op-amp Projects :: DIY Phono Projects :: DIY Cable Projects :: Hi-Fi Audio Schematics
© - Terms of Service - Privacy Policy