Post your Solid State pics here. - Page 246 - 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 May 2012, 04:55 PM   #2451
redjr is offline redjr  United States
diyAudio Member
 
Join Date: May 2011
Location: Danbury, CT
Looks impressive. That appears to be a Par Metal enclosure?
  Reply With Quote
Old 8th May 2012, 06:07 PM   #2452
diyAudio Member
 
tangmonster's Avatar
 
Join Date: Jul 2007
Location: Cape Town
Quote:
Originally Posted by AndrewT View Post
What fuse rating does that allow reliable start up every time?
Does that fuse ever blow when the music is turned up to silly "party levels"?
What size of fuse did you finally select?
Haven't decided on a final fuse size. Heck i haven't even soldered the rca wires on yet :P

So far just bench testing. And letting it idle for long times checking the bias.

Currently I have a 7.5 Amp slow blow in it.

The enclosure base and lid is 1.6mm mild steel black powder coated and the face is 4.5mm natural anodized Alu. The faceplate is punched to keep costs low. (around the $100 for the entire case with faceplate if I can convert it to $ directly)

I designed this enclosure (135mm high 420mm wide and 300mm deep) and a few other sizes ( 95mm en 60mm high) for the South African Audio video forums as a group buy.

Click the image to open in full size.
  Reply With Quote
Old 9th May 2012, 03:22 AM   #2453
redjr is offline redjr  United States
diyAudio Member
 
Join Date: May 2011
Location: Danbury, CT
Good job. It looks very similar to the enclosure I used on my latest build, and the cases supplied by Par Metal here in the US.
  Reply With Quote
Old 9th May 2012, 10:15 AM   #2454
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
T7.5A is no protection at all.
That should start a 500VA without a soft start (500VA / 230Vac * 3 ~= 7.5A)
Soft start allows the 3 factor to be reduced to ~1

I would expect a 500VA to soft start on a T2A fuse and you may find that you can start and operate your amplifier with a T1.2A or T1.6A. That's why my first and third questions look similar but are actually asking for different information.
__________________
regards Andrew T.
  Reply With Quote
Old 9th May 2012, 10:24 AM   #2455
Bonsai is online now Bonsai  Taiwan
diyAudio Member
 
Bonsai's Avatar
 
Join Date: Jul 2003
Location: Taipei, Taiwan
A nice solid build tangmonster! Baie lekker ek se!
__________________
bonsai
Amplifier Design and Construction for MUSIC! http://hifisonix.com/
  Reply With Quote
Old 9th May 2012, 10:40 AM   #2456
diyAudio Member
 
tangmonster's Avatar
 
Join Date: Jul 2007
Location: Cape Town
Since I have 2 x 500va toroidals (each supplying a voltage rail).

I agree a 4 amp fuse will probably be good.

No reason to see how long a 3.15Amp fuse will last tho....

I'm sure I have some T3.15's so i'll try them next.

First I need to finish wiring...
  Reply With Quote
Old 9th May 2012, 10:42 AM   #2457
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Fuse each transformer separately.

The chances of the fault causing both to draw fault current at the same time is virtually impossible.
__________________
regards Andrew T.
  Reply With Quote
Old 9th May 2012, 01:30 PM   #2458
diyAudio Member
 
jacco vermeulen's Avatar
 
Join Date: Oct 2004
Location: At the sea front, Rotterdam or Curaçao
Send a message via Yahoo to jacco vermeulen
Quote:
Originally Posted by Bonsai View Post
Baie lekker ek se!
You should say it more often, Mr Russell.
__________________
The buck stops Here
  Reply With Quote
Old 10th May 2012, 08:22 AM   #2459
diyAudio Member
 
Join Date: Oct 2010
Location: Auckland NZ
JLH all finished

Click the image to open in full size.
Click the image to open in full size.
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 10th May 2012, 08:57 AM   #2460
Telstar is offline Telstar  Italy
diyAudio Member
 
Join Date: Dec 2007
Location: Italy
Change the RCA cable please
__________________
"The total harmonic distortion is not a measure of the degree of distastefulness to the listener and it is recommended that its use should be discontinued." D. Masa, 1938
  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



New To Site? Need Help?

All times are GMT. The time now is 11:26 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