diyAudio (
-   Pass Labs (
-   -   ONO; more MM gain, please! (

Cobra2 17th March 2009 03:21 PM

ONO; more MM gain, please!
I have a diy-(X)ONO, and would really like some more gain for MM.
For MC, there are 2 jumpers, but MM is fixed...
Any hints how to increase MM gain wil be most welcome!

Arne K

analog_sa 17th March 2009 03:27 PM

Reducing the 100ohm resistor R21 will help within limits. A lot of people have simulated the design so OLG must be well known. This will give you a hint of the max CLG before riaa gets affected. I am sure you can easily squeeze in an extra 10db.

Cobra2 17th March 2009 03:37 PM

Any guess how low I can go on R21?
+6-8dB would do the difference, I guess.

Arne K

analog_sa 17th March 2009 03:47 PM

The best answer would come from someone with a working simulation - a PM to Stefanoo may help. At +6db you should probably also raise the 220uF caps proportinately to the reduction in resistance if you are using them.

All times are GMT. The time now is 05:43 PM.

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