Class d sub - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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
Reply
 
Thread Tools Search this Thread
Old 8th December 2002, 03:23 PM   #11
Rarkov is offline Rarkov  England
diyAudio Member
 
Rarkov's Avatar
 
Join Date: Aug 2002
Location: North East, UK
Send a message via ICQ to Rarkov Send a message via Skype™ to Rarkov
It is not easy to build a class d from discrete components. Firstly, you need an extremely fast sawtooth or triangle wave. That usually requires an opamp at least. You need a comparator to generate the PWM there's another high speed opamp. After that you need under/over sampling protection etc etc and then you have the discrete output that all the circuits have. In other words you still have to have chips unless you make up discrete opamps...but these are not really in the signal path (apart from the comparator). You shouldn't really take noise into consideration (by comparing discrete/chip) since you are totally dismantling the signal anyway! You will get far better results from an H-bridge driver or dedicated Class D driver...and it'll be a whole lot safer!

Gaz
  Reply With Quote
Old 9th December 2002, 08:30 AM   #12
hacknet is offline hacknet  Singapore
diyAudio Member
 
Join Date: Nov 2002
Location: sg
i will look into class h
  Reply With Quote
Old 9th December 2002, 09:38 AM   #13
diyAudio Member
 
Join Date: May 2002
Location: Switzerland
hi hacknet

The subwoofer-modules i meant in an earlier post are made by the German manufacturer RCM Akustik.
They seem to be quite cool (in more than one sense) but they don't come cheap.
The 300 Watt one is about 300 Euros for example.

http://www.rcmakustik.com/eng/rcm_rahmen.htm
look under Products => Detonation => Datasheet


Regards

Charles
  Reply With Quote
Old 9th December 2002, 08:12 PM   #14
diyAudio Member
 
Join Date: Apr 2002
Go to
http://www.classd.org/

Mueta chips looks very interesting for electrostatic loudspeakers.
  Reply With Quote

Reply


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
1500W RMS Class D PCB - which Class D Driver Chip is it ? mosfetsound Class D 11 1st April 2011 11:17 AM
Can a Class AB PP amp be said to be operating in Class A at low signal levels? ray_moth Tubes / Valves 19 23rd January 2009 07:52 PM
How about a round-up of Class A kit power amps, or collectable vintage class A? Brisso57 Solid State 4 14th February 2007 10:30 AM


New To Site? Need Help?

All times are GMT. The time now is 08:02 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2