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

Solid State Talk all about solid state amplification.

nikko TRM-750
nikko TRM-750
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 11th November 2009, 03:23 AM   #11
diymax62 is offline diymax62  Italy
diyAudio Member
Join Date: Nov 2004
Location: Rome
Nico, great answer, I'll copy and paste in my electronic archives for future use!!
Paul, thanks for the information. I already saw the Elliot's page, but I didn't put it in relationship with your tone control. I think that the Crown IC150 preamp should be similar to the Nikko trm-750 stage, and I'll try to give it a look (if I'll find it...).
The schematics that I posted is referred to the line stage - tone control, it works but it has too much gain (I think 10+1, somewhat around 21-22 dB). The question was if I can be able to reduce the overall gain by about 10 dB, even if I loose the boost-cut linearity (really I tend to don't use tone control, and when I use it I apply a VERY small amount of "correction").
The schematics used in your headphone amp has too low gain for my needs, the optimum should be the Nico's last answer approach applied to non-inverting topology, (very educational and appreciated) with a focus to the overall gain.
I like the active component's minimalist approach of the non-inverting topology and I'd like to play with it.

Thanks again Nico and Paul for your precious information.


p.s.: I've just found the Crown schematics, very similar to the Nikko's one, but it seems a better sounding one due to the frequency choice (they look similar to Elliot's choice). If I'll not be able to reduce the gain in my Nikko, surely I'll play with the Crown's value to improve the control.
Here is the pages for the schematics link:

Last edited by diymax62; 11th November 2009 at 03:39 AM. Reason: additional information...
  Reply With Quote
Old 12th November 2009, 07:35 PM   #12
Nico Ras is offline Nico Ras  South Africa
diyAudio Member
Nico Ras's Avatar
Join Date: Nov 2005
Location: East Coast of South Africa
I am pleased that we could assist in some way, it is always a pleasure

Kindest regards

  Reply With Quote


nikko TRM-750Hide 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
Nikko Alpha 440 and 450 lazyjoe Solid State 1 6th August 2016 12:48 PM
Nikko Beta Ii east electronics Solid State 7 19th March 2010 06:45 AM
Who knows the Nikko Alpha II ? ginetto61 Solid State 4 20th October 2009 04:45 PM
Nikko Alpha 220 GEirin Solid State 4 17th April 2008 08:34 PM
Nikko NA2000 sasbgsas Solid State 0 22nd May 2007 10:23 AM

New To Site? Need Help?

All times are GMT. The time now is 02:25 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio