6 Channel Amp Wiring Advice - Page 2 - diyAudio
Go Back   Home > Forums > Commercial Sector > Vendor Forums > Audio Sector

Audio Sector Kits & PC boards from AudioSector

Reply
 
Thread Tools Search this Thread
Old 7th November 2011, 05:13 AM   #11
diyAudio Member
 
thunk303's Avatar
 
Join Date: Mar 2005
Location: Eltham, Melbourne, Australia
By the way, the mono OB sounds allot better than it looks..... lol
  Reply With Quote
Old 7th November 2011, 07:20 AM   #12
diyAudio Member
 
thunk303's Avatar
 
Join Date: Mar 2005
Location: Eltham, Melbourne, Australia
Does this look any good?
Would I need one for each Traffo?

Soft starting switch full kit for power amplifier ! | eBay
  Reply With Quote
Old 7th November 2011, 07:39 AM   #13
frank1 is offline frank1  United Kingdom
diyAudio Member
 
Join Date: Apr 2006
Location: Devon UK
Quote:
Originally Posted by thunk303 View Post
Hey Frank.

Smoothing of the psu or the metalwork or??

Dean
Hi Dean,
Nice work by the way.
What value smoothing capacitors on each amp?

Frank
  Reply With Quote
Old 7th November 2011, 08:49 AM   #14
diyAudio Member
 
thunk303's Avatar
 
Join Date: Mar 2005
Location: Eltham, Melbourne, Australia
Hey Frank.

Peter supplies 10uF Pana FC for what I think are the smoothing. I have around 30mm under the PSu boards so I can fit larger values if required.

Any suggestions for possible upgrades later on?

Dean
  Reply With Quote
Old 7th November 2011, 08:51 AM   #15
just another
diyAudio Moderator
 
wintermute's Avatar
 
Join Date: Aug 2003
Location: Sydney
Blog Entries: 22
Hi Dean, looks nice! I've moved to AudioSector as suggested/requested

edit: It looks like there is 1500uF smoothing capacitance per rail, however it is implemented on the amp board rather than on the ps board (none on the PS board as far as I can see). I ran my LM3886 with 1,00uF / rail for over a year without any problem. I recently added an additional 4,700uF per rail (total 5,700uF) this reduced the hum on the output a little (it was very low to start with, virtually inaudible literally had to put my ear up to the speaker cone to hear it at full volume) other than that I didn't really notice any difference. I think 1500uF per rail should be fine.

Tony.
__________________
Any intelligence I may appear to have is purely artificial!
Some of my photos

Last edited by wintermute; 7th November 2011 at 08:59 AM. Reason: add comment about smoothing capacitance
  Reply With Quote
Old 7th November 2011, 09:20 AM   #16
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by AndrewT View Post
For 220/240Vac I suggest a pair of series connected CL60 for the transformer Primary.
This pair could reliably start up a 1200VA transformer, or three 400VA transformers, but will run hot some of the time.
......................... every transformer has it's own close rated fuse.
Quote:
Originally Posted by thunk303 View Post
Each transformer has its own fuse and switch
not necessary. One mains switch, one mains fuse, one mains chassis connected to PE. Then 3 fuses supplying three transformers.
Quote:
so I can use/disable 2/4/6 channels depending on whats connected.
only if that is what you can use.

Quote:
This also allows/requires me to use a separate CL60 for each transformer. If 2 in series is enough for all 3 400VA traffo's then would 1 each work well?
NO !!! a pair @ ~30r will behave very differently starting 1200VA than a single @ ~15r will do for 400VA. Completely differently.
15r seems to work for medium size transformers on 110/120Vac, but not well enough on 220/240Vac. Too little current limiting at the higher voltage supply.
__________________
regards Andrew T.

Last edited by AndrewT; 7th November 2011 at 09:22 AM.
  Reply With Quote
Old 7th November 2011, 10:35 AM   #17
diyAudio Member
 
thunk303's Avatar
 
Join Date: Mar 2005
Location: Eltham, Melbourne, Australia
I love it when Andrew gets excited

Thank you Tony for the move, and thanks for the input on the caps.

So, just to clear things up...

1. The back panel has already been built, so each transformer has its own switch and its own fuse, I don't want to change that. Which means that when i implement inrush limiting I need to deal with each transformer separately.

2. I am not sure what you mean by 'only if that is what you can use'? I can switch any one of the three pairs on separately with this setup?

3. I always appreciate your technical experience/input Andrew but telling me what 'not to do' is only half the answer. Hopefully I have explained what I have and would love to find out what I 'do" need to do with that to limit current inrush. Are you saying the CL60 is underrated or overrated? Are you saying I should use 2 in series for each transformers with 240v input?

Please read this with the respect intended.

Cheers
Dean

Last edited by thunk303; 7th November 2011 at 10:39 AM.
  Reply With Quote
Old 7th November 2011, 12:08 PM   #18
diyAudio Member
 
thunk303's Avatar
 
Join Date: Mar 2005
Location: Eltham, Melbourne, Australia
Speaker inputs and outputs wired and soldered today, good to finally seeing it all come together.

Also got the wood for the Delta15LFA H baffles today.

Dean
  Reply With Quote
Old 7th November 2011, 12:27 PM   #19
AndrewT is offline AndrewT  Scotland
diyAudio Member
 
Join Date: Jul 2004
Location: Scottish Borders
Quote:
Originally Posted by AndrewT View Post
For 220/240Vac I suggest a pair of series connected CL60 for the transformer Primary.
Quote:
Originally Posted by thunk303 View Post

3.................. find out what I 'do" need to do with that to limit current inrush. ..................... Are you saying I should use 2 in series for each transformers with 240v input?
__________________
regards Andrew T.
  Reply With Quote
Old 7th November 2011, 12:30 PM   #20
Einric is offline Einric  United States
diyAudio Member
 
Einric's Avatar
 
Join Date: Feb 2011
Location: Bozeman, MT
Awesome work, I am looking to do the same thing as you.
I already have 2 channels going and love them.
I hope you don't mind if I borrow your layout for my own.
It will facilitate clean wiring and a compact footprint.
  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
Advice on internal wiring upgrade for a pair of B&W 800D's soundengine355 Multi-Way 71 3rd August 2011 08:32 PM
Help wiring power to 3 channel amp with one plug chevy2410 Chip Amps 57 30th May 2007 06:28 PM
Need advice for a 4 channel amp Maxxarcade Chip Amps 7 4th May 2007 09:21 AM
I'm wiring my 4 channel 8 parallel LM4780 boards... check my wiring :) Audiophilenoob Chip Amps 9 16th August 2005 04:37 AM
Wiring a 2-channel, 250watt max car amp in home Gigas-VII Solid State 5 4th July 2004 04:55 AM


New To Site? Need Help?

All times are GMT. The time now is 07:10 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