World-Designs-Forum  

Go Back   World-Designs-Forum > World Designs > WD Amplifiers
Register FAQ Members List Calendar Gallery Today's Posts Mark Forums Read

WD Amplifiers For discusson of World Designs Amplifiers

Reply
 
Thread Tools Display Modes
  #11  
Old 31st July 2014, 01:26 PM
bob orbell bob orbell is offline
Senior Member
 
Join Date: Nov 2009
Location: kettering northants.
Posts: 2,049
Default Re: 6550 integrated amp

Hi Steve, as I remember it, the output cable is integral with the output transformers, as for the relay PCB I don't think it is of the same dimensions as the input holes on the 6550, so you need to fit it close by, or over the top of the phono input's on stilts with short wires, this PCB was designed for the WD amp's and fits over the phonos making direct connection. BOB
Reply With Quote
  #12  
Old 31st July 2014, 02:24 PM
Desmodromic's Avatar
Desmodromic Desmodromic is offline
Member
 
Join Date: Jun 2007
Location: Hertfordshire
Posts: 53
Default Re: 6550 integrated amp

Quote:
Originally Posted by bob orbell View Post
Hi Steve, as I remember it, the output cable is integral with the output transformers, as for the relay PCB I don't think it is of the same dimensions as the input holes on the 6550, so you need to fit it close by, or over the top of the phono input's on stilts with short wires, this PCB was designed for the WD amp's and fits over the phonos making direct connection. BOB
Which is why I recommended using the shielded cable. Start with getting the amp running in a fairly standard form before introducing such non standard parts/architecture....

Remember, Steve's new to all this.
Reply With Quote
  #13  
Old 31st July 2014, 03:16 PM
bob orbell bob orbell is offline
Senior Member
 
Join Date: Nov 2009
Location: kettering northants.
Posts: 2,049
Default Re: 6550 integrated amp

Ref. Steve's post page 10, he has acquired the input relay PCB and want's to fit it, if he asks for help I for one will try and help him, I agree starting from the base and working up is the best way to go, but it seems to me that he wants to fit the relay board now. BOB
Reply With Quote
  #14  
Old 31st July 2014, 03:17 PM
John Caswell John Caswell is offline
Super Moderator
 
Join Date: Dec 2005
Location: Wokingham, Berkshire
Posts: 1,599
Default Re: 6550 integrated amp

Hi Steve,
The simplest way to fit the relay board is to solder short (2") lengths of tinned copper wire (TCW) about 20SWG to the various pads on the PCB, decide how far away spaced you require it then bend them to match the sockets on the rear of the amplifier and then solder them in accordingly. You will only need one earth wire per channel. The control wires from switches to PCB should ideally be multicoloured for ease of identification.
Good quality thin coaxial wire for the signal outputs, plain copper or silver plated, your choice.
Make sure that you get the diodes on the relay board fitted the correct way round, make sure the DC supply from the heater rectifier is the correct way around.
I would also fit the relays in sockets for ease of replacement, that way you know they will never fail, whereas if you solder them in Sods Law says they will fail.
If in doubt ask here and someone will help out.

John
Reply With Quote
  #15  
Old 2nd August 2014, 09:01 PM
nixie 55's Avatar
nixie 55 nixie 55 is offline
Junior Member
 
Join Date: Jul 2014
Location: biddulph
Posts: 5
Default Re: 6550 integrated amp

HI folks
thanks for the information i had all ready talked to matthew about the fitting of the PCB relay board but i thought i would ask the question on the forum as some body might have come up with a better way or have some good tips like the fitting of the relays in sockets i went for the PCB relay board as it looks less work i hope

regards steve
Reply With Quote
Reply

Thread Tools
Display Modes

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
Forum Jump


All times are GMT +1. The time now is 12:18 AM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.
Copyright World Designs