ANK AudioKits Forum

ANK AudioKits support forum

Return to ANK AudioKits Forum

Audio Note Kits Forum

RE: DAC Kit 2.1 Level C output level

75.150.159.9

AstroSonic

In Reply to: RE: DAC Kit 2.1 Level C output level posted by AstroSonic on April 08, 2009 at 17:58:14

That was 1.62vrms (not p-p), and into 100k, 10k and 3.3k resistive loads.

Bob

Follow Ups:

RE: DAC Kit 2.1 Level C output level - powerlion@mail.ru 22:50:40 04/10/09 (2)
Did you measure output level from Digital board? We are trying to understand where's the problem-in the analog stage or digital. My output weak - 0,75 V RMS. Is there levels' diagram of DAC? Unfortunately, Brian didn't answer me.
Thank you
Sergey
- RE: DAC Kit 2.1 Level C output level - AstroSonic 09:27:56 04/12/09 (1)
  Sergey,
  
  The DAC 2.1x Signature (production model) appears to differ substantially from the DAC Kit 2.1 Level C Signature. That being the case, the specifications, including the 3v rms output level, cannot be assumed to be the same. The AudioNote Kits website does specify "2.5 v rms both channels" for the DAC Kit 2.1 Level C.
  
  Since the CDs that came with the kit may not have a reference level signal (maybe just a 1kHz signal for signal tracing and circuit debugging - per Brians response below) we really have no way to compare voltage measurements from the 2 DACs (mine and yours), or to verify that they meet the output specification. For the same reason, I have not measured the output from my digital board. There is no means of comparison unless we are using the same level signal (or know what the signal level is on each CD).
  
  Even though my kit does not produce 2.5 v rms using the included CD, it still does a superb job of driving my passive preamp and 45 SET power amplifier. Does your kit drive your system to adequate levels? If so, I would not worry about it.
  
  If your kit is not adequately driving your system, what is it connected to (preamp/input impedance)? If both channels share this problem, then the cause is likely to be shared by them as well: either incorrect power supply voltages or a parts substitution at the same circuit location in both channels. In addition to the power supply voltages which you measured, it would probably be useful to know what the dc voltage is on each plate and cathode of the analog output stage (4 triodes total).
  
  Brian is far and away THE expert here on the AudioNote kits that he sells. Working with him is your best chance of solving your DAC problem. The lack of a functional email address for you (according to AudioAsylum) will make this dificult.
  
  Good luck,
  
  Bob
  - RE: DAC Kit 2.1 Level C output level - powerlion@mail.ru 23:29:05 04/12/09 (0)
    Thank you, Bob. Brian answered me already. He explain me reason of this problem. We will go with changing resistors on Digital Board.
    I have Oto Line SE with AZ-Twos speakers. System is balanced well and I very love this sound.
    
    Sergey

Post a Followup:

FAQ

Post a Message!

Forgot Password?

Moniker (Username):
Password (Optional):
	Remember my Moniker & Password (What's this?) Eat Me
E-Mail (Optional):
Subject:

Message:	(Posts are subject to Content Rules)

Optional Link URL:
Optional Link Title:
Optional Image URL:
Upload Image:
E-mail Replies:	Automagically notify you when someone responds.

To view your new posting or follow-up, click on the RELOAD or REFRESH button on your browser.

This post is made possible by the generous support of people like you and our sponsors:

Sonic Craft