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

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

Cartridge dynamic behaviour
Cartridge dynamic behaviour
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 Today, 08:51 PM   #481
Hans Polak is offline Hans Polak  Netherlands
diyAudio Member
Join Date: Mar 2005
Location: Blaricum
Originally Posted by jackinnj View Post
Gonna try outboarding this for the HP3577 and Bode100
Hi Jack,

Allow me to give you a simple tip.

With 50 Ohm for R19, the equivalent input noise at R19 for a 10Hz filter @3Khz and with the OPA2604 will be 38nV.
For a SNR of 35dB to give an accurate measuring result, the Signal will then have to be 2.1uV at R19. With this 50 Ohm resistor, voltage over the Cart will then be 400uV.

When replacing R19 by a 5K resistor, equivalent noise wil be 46nV with a 10Hz filter. For the same 35dB SNR you will need 2.6uV signal at this spot.
However signal over the cart will now be 5 uV, or 80 times lower as with the 50 Ohm resistor.

Your 3577 will calculate a wrong Inductance for the coil, that only has to be corrrected with a factor 100.

  Reply With Quote


Cartridge dynamic behaviourHide 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
PTC Behaviour jayam000 Solid State 11 4th May 2009 04:35 AM
F3 - LED behaviour Nicola Pass Labs 2 22nd August 2007 09:02 AM

New To Site? Need Help?

All times are GMT. The time now is 09:39 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio