Simple Symetrical Amplifier - Page 101 - 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 30th September 2011, 05:52 PM   #1001
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Andrew nothing silly , play music with alot of dynamics and you will blow an 10 amp output fuse the load is 1 ohm, academic and not unusual IMO...


You should get out more .............
  Reply With Quote
Old 30th September 2011, 06:19 PM   #1002
diyAudio Member
 
SOUND_Rays's Avatar
 
Join Date: Mar 2009
a.wayne,

What speakers do You need to drive with so low 1 ohm impedance?
  Reply With Quote
Old 30th September 2011, 06:27 PM   #1003
AndrewT is online now AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
If you blow a 10A output fuse you have done something really silly.
Quote:
Originally Posted by a.wayne View Post
Andrew nothing silly , play music with alot of dynamics and you will blow an 10 amp output fuse the load is 1 ohm, academic and not unusual IMO...
trying to play music into 1ohm speakers seems worse than really silly !
__________________
regards Andrew T.
  Reply With Quote
Old 30th September 2011, 08:48 PM   #1004
diyAudio Member
 
Lazy Cat's Avatar
 
Join Date: Sep 2007
Exclamation SSA Low Impedance HP

Quote:
Originally Posted by a.wayne View Post
Thanks LC,

awaiting the values necessary to hear an SSA at power .....
Here it is, SSA suitable to drive yours low Z speakers.

I suggest you to built two monoblocks solid as a rock and please provide good and fast thermal dissipation.

The worst output BJT SOA case is at 25 V output voltage on 1 ohm impedance, resulting in 625 W power dissipation on 6 outputs (104 W per one BJT) which is managable with a good heatsinking.

Regards Andrej
Attached Images
File Type: jpg SSA Low Impedance HP.jpg (803.6 KB, 1302 views)
File Type: jpg SSA Low Impedance HP PSU.jpg (621.9 KB, 1160 views)

Last edited by Lazy Cat; 30th September 2011 at 08:51 PM.
  Reply With Quote
Old 30th September 2011, 09:13 PM   #1005
Bigun is offline Bigun  Canada
diyAudio Member
 
Bigun's Avatar
 
Join Date: Jan 2009
Blog Entries: 2
Wow, look at them output transistors, 6 per side !

I name this circuit the "E-Type" - with the V12
Attached Images
File Type: jpg Jaguar-E-Type-Front-Bumper.jpg (127.2 KB, 978 views)
__________________
"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed." Robert M Pirsig.

Last edited by Bigun; 30th September 2011 at 09:15 PM.
  Reply With Quote
Old 30th September 2011, 10:09 PM   #1006
diyAudio Member
 
Join Date: Sep 2009
hey Lazy Cat, thanks for the help, its a personal foible of mine but id rather bend the legs out a bit rather than rearrange the board and swash all the tracks close together. i work it as about 2mm on each trans to get the faces touching.

as long as the face touch i don't see it as a problem, and i find the extra space around the tracks helps with me etching and drilling my own boards.

thanks again, steve.
  Reply With Quote
Old 30th September 2011, 10:12 PM   #1007
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center


Quote:
Originally Posted by Lazy Cat View Post
Here it is, SSA suitable to drive yours low Z speakers.

I suggest you to built two monoblocks solid as a rock and please provide good and fast thermal dissipation.

The worst output BJT SOA case is at 25 V output voltage on 1 ohm impedance, resulting in 625 W power dissipation on 6 outputs (104 W per one BJT) which is managable with a good heatsinking.

Regards Andrej
Thank you LC........... no i can go off and play ..........

Last edited by a.wayne; 30th September 2011 at 10:17 PM.
  Reply With Quote
Old 30th September 2011, 10:17 PM   #1008
a.wayne is offline a.wayne  United States
Sin Bin
 
Join Date: May 2008
Location: Front Row Center
Quote:
Originally Posted by AndrewT View Post
trying to play music into 1ohm speakers seems worse than really silly !

Your Ignorance is unbecoming Andrew , Grow up .....

"The test of the machine is the satisfaction it gives you. There isn't any other test. If the machine produces tranquility it's right. If it disturbs you it's wrong until either the machine or your mind is changed."

Robert M Pirsig.


Quote:
Originally Posted by Bigun View Post
Wow, look at them output transistors, 6 per side !

I name this circuit the "E-Type" - with the V12
LOL... I like it SSA-V12 .........................

Last edited by a.wayne; 30th September 2011 at 10:32 PM.
  Reply With Quote
Old 1st October 2011, 05:12 AM   #1009
diyAudio Member
 
Smiley 09's Avatar
 
Join Date: Sep 2009
Location: at Lake coast
Default Balanced I/P SSA -V12

Lazy Cat,

Thank You for the SSA V-12.
A masterpiece of its own .
Please, can You add the dedicated Balanced Input stage to this particular design that will make this SSA-V12 best of IT. . ...
  Reply With Quote
Old 1st October 2011, 05:45 AM   #1010
MiiB is offline MiiB  Denmark
diyAudio Member
 
Join Date: May 2005
Location: Denmark
smiley... Lc already made a balanced front-end.. just combine the two....and you have what your'e looking for...no need for spoon feeding there...
  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
Symetrical schematics are alike plague in Brazil, do you like them? destroyer X Solid State 151 1st July 2010 03:09 PM
Symetrical out low Zout karsten21 Tubes / Valves 5 1st February 2010 11:19 PM
going balanced/symetrical - what benefits? weissi Solid State 15 20th October 2007 09:06 AM
Symetrical field, is this? Raka Multi-Way 6 14th September 2003 02:21 PM
Non-symetrical SMPS output cm961 Parts 4 21st August 2003 11:27 PM


New To Site? Need Help?

All times are GMT. The time now is 10:05 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