Phono pre-amp into DSP - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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

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 27th March 2013, 01:34 AM   #1
diyAudio Member
Join Date: Aug 2008
Default phono preamp gain settings for maximising S/N + dynamic range into DSP

Hi fellers

I have a turntable I've had for a while now, and a small amount of vinyl and I'd like to explore more. I've started down the slippery slope of discrete gear and so no longer have an integrated amp or any sort, except for an NAD I've been lent that has no phono stage. I'm putting together the parts for a PassDIY Pearl II.

My preamp will be a MiniDSP 2x8 and the system will be all active.

The DSP has a 2volts (or 0.9) RMS max input. I'd like to make the most of the S/N of the device, but would rather not have attenuators before it, although if I really must then I'll build some with fancy resistors.

My question to you all is: how much dynamic range should I allow for in the gain setting on the Pearl II?

I've looked around but still don't understand how to interpret the sensitivity ratings of cartridges; x mV @ 1kHz @5cm/s etc, but is this considered 0dB, or maybe -x dB relative to vinyl average levels? I'm going to allow for multiple gain settings to account for differences between MM and MC at least, and it wouldn't be hard to have even 5 gain settings available, but I still need to know what the peaks are going to be like.

Perhaps I'm going to have to build it, run with default and just measure and learn what the dynamic range needs are... and then live with attenuators.

thanks for your opinions


ps: i'm sorry for the useless thread title. I tried to change it but alas, it cannot be done.

Last edited by derwhalfisch; 27th March 2013 at 02:11 AM.
  Reply With Quote


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
Will phono pre > passive pre > amp work well enough? soldersmoker Analog Line Level 12 3rd September 2013 06:15 PM
Phono pre-amp, TT PSU, mic pre-amp build log ptheskil Analogue Source 0 7th May 2012 02:55 PM
How Can I connect A Balanced RIAA Phono Pre-Amp to a Phono Plug amp input jmartinbaugh Analogue Source 3 25th April 2011 01:24 PM
Phono pre amp nhuwar Tubes / Valves 2 11th December 2008 06:16 PM
Pre-pre; phono; pre line ;device discrete (bjt/fet) o op. amplifier GIPIONE Solid State 8 18th December 2005 09:09 PM

New To Site? Need Help?

All times are GMT. The time now is 08:09 AM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2