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 28th October 2013, 11:08 PM   #21
diyAudio Member
 
Join Date: Aug 2005
I am interested in 1-2 pairs of boards for sure.
And I am interested in the 4OHM discussion as well

Cheers!
  Reply With Quote
Old 28th October 2013, 11:57 PM   #22
PMI is offline PMI  United States
diyAudio Member
 
Join Date: Feb 2013
Location: Milwaukee, Wisconsin
Quote:
Originally Posted by metallicus69 View Post
I am interested in 1-2 pairs of boards for sure.
And I am interested in the 4OHM discussion as well

Cheers!
I added your name to the list. Perhaps the question in regard to 4-ohm speakers should be, how much power does it make sense to design for?

I have been thinking of this as a "small" amp. Sort-of like a sports car. You avoid some of the pitfalls of bigger heavier vehicles, precisely because it is small, so good performance does not cost much.

The most obvious answer to more power without changing the design much is to use the ALF16N/P devices, but it will no longer be low cost.
  Reply With Quote
Old 28th October 2013, 11:59 PM   #23
diyAudio Member
 
Join Date: Mar 2007
Location: Bandung
Quote:
Originally Posted by JOHN BALI View Post
Yes the component selection is good start...
1. I see some other CFA-amp use 2-3watt feedback resistor
see NX-amp by Bonsai
now where I can find these dale resistor
so 0.5watt is minimum if we go for higher supply (this what I thought).

-snip
Regards
Hallo bli John, on F5 (i think it CFA too) use 4 x 3 watt resistor.
I think it depend on current passing through on the resistor not depend on voltage, hence it call CFA. CMIIW
PMI, any schematic ?


Didiet
  Reply With Quote
Old 29th October 2013, 12:01 AM   #24
PMI is offline PMI  United States
diyAudio Member
 
Join Date: Feb 2013
Location: Milwaukee, Wisconsin
Quote:
Originally Posted by didiet78 View Post
PMI, any schematic ?
Still reviewing it.
  Reply With Quote
Old 29th October 2013, 01:22 AM   #25
diyAudio Member
 
still4given's Avatar
 
Join Date: Oct 2004
Location: Victorville, CA
I've been playig my TO-3 VSSA on 4 ohm and 37V rails for a few days now without any issue that I can see. What should I be looking for to know if there is a problem?

Thanks, Terry
  Reply With Quote
Old 29th October 2013, 02:04 AM   #26
PMI is offline PMI  United States
diyAudio Member
 
Join Date: Feb 2013
Location: Milwaukee, Wisconsin
Quote:
Originally Posted by still4given View Post
I've been playig my TO-3 VSSA on 4 ohm and 37V rails for a few days now without any issue that I can see. What should I be looking for to know if there is a problem?

Thanks, Terry
Those are Jason's boards, so I would ask him, but if there was a problem, you would probably know it by now.
  Reply With Quote
Old 29th October 2013, 02:16 AM   #27
diyAudio Member
 
jkuetemann's Avatar
 
Join Date: Dec 2010
Location: Paris, Ontario
Quote:
Originally Posted by still4given View Post
I've been playig my TO-3 VSSA on 4 ohm and 37V rails for a few days now without any issue that I can see. What should I be looking for to know if there is a problem?

Thanks, Terry
The magic blue smoke would be set free if there were an issue. The MOSFETs are really quite forgiving and rugged, given the dynamic nature of music I would not expect any issues with your set-up. For testing with full power sines use 8 ohm.
__________________
---Jason Kuetemann---
When the student is ready, the master appears. VSSA Boards Available Here

Last edited by jkuetemann; 29th October 2013 at 02:18 AM.
  Reply With Quote
Old 29th October 2013, 03:27 AM   #28
diyAudio Member
 
still4given's Avatar
 
Join Date: Oct 2004
Location: Victorville, CA
It's not even breaking a sweat. This is a very impressive amp. I just built a speaker switch so I could do an easy blind test with my amps. I have to tell you, the peeceebee doesn't take a back seat to any of my amps. I am using a B1 mezemerize and an X-BoZoZ for volume controls. I have been amazed how close all the amps are when their volumes are equalized. To my surprise, the peeceebee has a bigger soundstage than my Honey Badger. It really is an amazing design.
  Reply With Quote
Old 29th October 2013, 05:27 AM   #29
diyAudio Member
 
meanman1964's Avatar
 
Join Date: Oct 2006
Location: Belgium the land of chocolate
Quote:
Originally Posted by PMI View Post
30~35V into 4 ohms, if you want to stay safe, but you could push it quite a bit, if you wanted to. With care, you can make some assumptions about the average current, and calculate back from that. most people want the extra power for dynamic range, not to blast out a continuous 1KHz sine wave at maximum power (chuckle).

edit:

I am planning on making a couple small board orders, and for now I am just keeping a list of interested people.
Two boards for me too
  Reply With Quote
Old 29th October 2013, 06:44 AM   #30
diyAudio Member
 
Join Date: Jul 2010
Location: Cacak
Two pcbs for me!
  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
PCB Through Hole Repair crazifunguy Parts 6 19th October 2011 02:54 AM
Looking for through-hole PCM2704 DIY PCB tommy_o Parts 2 2nd June 2011 01:56 PM
Making plated through-hole PCB rozon Parts 2 1st May 2009 01:57 AM
PCB Hole Size ptah Parts 10 30th November 2006 01:51 AM
How to remove thru-hole IC from multi-layer PCB? Alexandre Parts 20 21st February 2006 09:32 AM


New To Site? Need Help?

All times are GMT. The time now is 04:11 AM.


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