Mono blocks, or separate power supply? - 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 29th July 2012, 09:19 PM   #1
Jay is offline Jay  Indonesia
diyAudio Member
 
Join Date: Feb 2003
Location: Jakarta
Default Mono blocks, or separate power supply?

For sound quality, which one will be better: 2 mono-blocks, or one case for amps and the other case for power supply (there will be on-board decoupling as well). All cases are Philips standard.

Because PS cable wont be long, amp case will always be stacked on top of PS case (Or should I make the cable longer?)

For mono-blocks, most probably also be stacked on top of each other to save space.

One benefit for separate PS I think is I can include PS for preamp, tho I'm not sure about it.
  Reply With Quote
Old 29th July 2012, 10:13 PM   #2
diyAudio Member
 
lanchile's Avatar
 
Join Date: Sep 2008
Location: AREA 51
sound quality? well, first it depends on the design of you amp, if money is not a problem for you then I will go for one case for amps and the other case for power supply. I have seen people using four chassis for a stereo amp. and I have seen amps using one chassis that are excellent too. in my case I went for one chassis to save money and I also wanted to build an integrated amp small but at the same time not sacrificing quality. take a look.
  Reply With Quote
Old 29th July 2012, 10:15 PM   #3
diyAudio Member
 
lanchile's Avatar
 
Join Date: Sep 2008
Location: AREA 51
This is my diy in one small chassis.
Attached Images
File Type: jpg 063.JPG (719.5 KB, 206 views)
File Type: jpg 012.JPG (673.6 KB, 197 views)
  Reply With Quote
Old 30th July 2012, 11:50 AM   #4
Jay is offline Jay  Indonesia
diyAudio Member
 
Join Date: Feb 2003
Location: Jakarta
Quote:
Originally Posted by lanchile View Post
if money is not a problem for you then I will go for one case for amps and the other case for power supply. I have seen people using four chassis for a stereo amp.
Thanks Lanchile. Yeah, "separate" seems to be the norm, no? From experience with prototypes, keeping transformer away clearly improve performance a lot. Also, stacking cases degrade performance a little bit. If PS is separated, I predict putting the cases side by side will be better than stacked on top of each other (which is what I wanted to do).

Money is a problem for me, but I have more than 10 of Philips cases/casings unused, because for this long I have only built prototypes

What I want to build is a good amp. It means class-A, no? That's why small casing like yours wont do it. The heatsink is already bigger than that, hehe.
  Reply With Quote
Old 30th July 2012, 08:44 PM   #5
diyAudio Member
 
Join Date: Apr 2010
Location: Coffs Harbour
Why not conventional monoblocs? Generally, a single channel has less problems with the PSU than a stereo pair and they are the preferred construction for European high-end DIY.
__________________
regards
  Reply With Quote
Old 30th July 2012, 08:56 PM   #6
diyAudio Member
 
KatieandDad's Avatar
 
Join Date: Nov 2011
Location: UK
For High Power connections, Speaker and Power, then shorter is best.

Best bet is for monoblocks located close to each speaker.
  Reply With Quote
Old 30th July 2012, 11:10 PM   #7
tvrgeek is offline tvrgeek  United States
diyAudio Member
 
Join Date: Dec 2009
Location: Md
The reason for a separate power supply is to get it away from the amp for induced hum rejection. Stacking is just about useless. Cables are not a problem, as you will have the main cap bank in the amp anyway.

One or two boxes may be dictated by how much heat sink you are needing. Two boxes lets you put them on both sides. 4 sides not two. I really don't care what "all the so and so" are doing. I look at the performance. I listen to my stereos. Actually, I go to great lengths to hide them from view. Besides, just because lemmings jump off a cliff, why should I? All those fancy milled aluminum cases are only their for bling. If you sell an amp for several grand, it is a requirement. Would you buy the same amp for $500 less if it was in a black painted Bud box? I would, but I am not normal.
  Reply With Quote
Old 30th July 2012, 11:30 PM   #8
Jay is offline Jay  Indonesia
diyAudio Member
 
Join Date: Feb 2003
Location: Jakarta
Quote:
Originally Posted by Ian Finch View Post
Why not conventional monoblocs? Generally, a single channel has less problems with the PSU than a stereo pair and they are the preferred construction for European high-end DIY.
Cool, then I'm now leaning towards this approach. If 2 channels in one casing I can use any one heatsink I have. For monoblocks I need 2 similar heatsinks or cut what I have now. That's, and some other implementation issues I need to solve.

Has stacking two monoblocks (ground is still isolated) been perceived inferior than side by side?

Quote:
Originally Posted by KatieandDad View Post
Best bet is for monoblocks located close to each speaker.
What do you mean close to each other? Shorter RCA cable from preamp? I always have a short RCA cable dedicated for stacked amps.
  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
Separate power supply chassis- with a difference! SHiFTY Tubes / Valves 14 21st January 2013 06:00 PM
Separate Power Supply Case nwboater Class D 5 27th June 2011 11:59 PM
Separate power supply - Umbilical Cord marcutan Tubes / Valves 39 27th January 2010 07:18 PM
separate chassis power supply onixuser Class D 2 4th March 2005 08:42 PM
Aelph-x separate power supply for drivers D3 Pass Labs 2 29th January 2004 01:32 PM


New To Site? Need Help?

All times are GMT. The time now is 12:36 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