My Completed Krell KSA 50 Clone - Pics - 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 August 2005, 04:21 AM   #1
lgreen is offline lgreen  United States
diyAudio Member
 
lgreen's Avatar
 
Join Date: May 2003
Location: San Diego, USA
Default My Completed Krell KSA 50 Clone - Pics

Click the image to open in full size.


Click the image to open in full size.

Building this amp was really a great example of "community" here at DIYaudio.com.
Despite the fact that the "Krell KSA 50 PCB" thread has over 3600
posts a lot of very smart people read it every day and answered
highly technical (and basic, and stupid) quesitons. The Krell KSA 50 Build Wiki contains
all the basic technical information and resources. People on that
thread bend over backwards to help each other out. Its really
been something special, I was very impressed.

Anyway, on to the amp, a few pics were first posted in the
massive Krell thread, but that thread is pretty unmanageable so here we go.
  Reply With Quote
Old 8th August 2005, 04:24 AM   #2
lgreen is offline lgreen  United States
diyAudio Member
 
lgreen's Avatar
 
Join Date: May 2003
Location: San Diego, USA
Click the image to open in full size.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 8th August 2005, 04:27 AM   #3
lgreen is offline lgreen  United States
diyAudio Member
 
lgreen's Avatar
 
Join Date: May 2003
Location: San Diego, USA
Sorry about the size of pics, if you have dialup you are going to be sitting for a while.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 8th August 2005, 04:29 AM   #4
lgreen is offline lgreen  United States
diyAudio Member
 
lgreen's Avatar
 
Join Date: May 2003
Location: San Diego, USA
Default last pic for now

Click the image to open in full size.
  Reply With Quote
Old 8th August 2005, 04:35 AM   #5
lgreen is offline lgreen  United States
diyAudio Member
 
lgreen's Avatar
 
Join Date: May 2003
Location: San Diego, USA
Default info

Ok, so I'm still working on the cover.

Stats-

- switchable from low bias to high bias, currently biased at 50W/8
ohms into 8 for high bias and 20W (??) for low bias.
- heat sink temp is about 61 deg C for high and 50 for low, depending
on how you set the fans of course, but its not overly loud at these temps.
- 4 pairs of MJ21193/94 per channel
- 128,000 uF per channel, plays for >5 sec after turned off even at high bias.
- Aerogate 3 personal computer fan controller and temperature monitor.
This allows for 4 channels of temp to be monitored, and
for speed monitoring and conntrolling of 4 fans.
- two fans, one 40mm on the bottom blowing up and a 120 mm on the
top blowing up.
- Dual mono from the AC inlet onwards, even soft start is dual mono.
- two 700 VA xformers.
- weighs 70 lbs/ 32 Kg.
- 22 mV (left) and 28 mV (right) DC offset
- the amp is bolted to the bottom wood plate. This is to ensure that
the fan intake has sufficient clearance.
- after much debate I decided to keep the heat sinks live.

Just starting to listen to it now, I can tell bass is not going to be a problem.

I'd keep rambling and posting pics, but I already did that on my web site, click Here for a ton of pics and my running narrative.
  Reply With Quote
Old 8th August 2005, 08:32 PM   #6
MikeW is offline MikeW  United States
diyAudio Member
 
MikeW's Avatar
 
Join Date: Sep 2002
Location: North of Boston
Very nice. Good job. I am sure you will like the sound.
__________________
MikeW
  Reply With Quote
Old 20th August 2007, 12:45 PM   #7
Buzzy is offline Buzzy  Singapore
diyAudio Member
 
Join Date: Apr 2007
Was it difficult to build it ? May i know the estimated cost to build it ? It looks very powerful.
  Reply With Quote
Old 20th August 2007, 01:19 PM   #8
diyAudio Member
 
Join Date: Aug 2003
Location: Prague,Czech Republic
How I see, right angle isn't necessary in America....
  Reply With Quote
Old 20th August 2007, 02:26 PM   #9
diyAudio Moderator
 
pinkmouse's Avatar
 
Join Date: Apr 2002
Location: Chatham, England
Right angles are for squares!
__________________
Rick: Oh Cliff / Sometimes it must be difficult not to feel as if / You really are a cliff / when fascists keep trying to push you over it! / Are they the lemmings / Or are you, Cliff? / Or are you Cliff?
  Reply With Quote
Old 20th August 2007, 02:33 PM   #10
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
Loveing the woodwork.....
  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
Remake of my DoZ almost completed [pics] starbase218 Solid State 19 10th December 2006 07:47 PM
completed 5-channel UCD-180 (pics) cowanrg Class D 18 22nd November 2006 10:25 PM
pics of my diy-proj : clone krell-ksa100mkII hukou Solid State 34 15th October 2006 10:56 AM
DIY Turntable is completed- pics here InDaGroove Analogue Source 27 9th July 2005 11:36 PM
Completed Leach Amp pics wigginjs Solid State 3 4th August 2004 12:42 AM


New To Site? Need Help?

All times are GMT. The time now is 08:22 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