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
  #1  
Old 6th July 2011, 09:12 PM
john & Jake the dog's Avatar
john & Jake the dog john & Jake the dog is offline
Senior Member
 
Join Date: Apr 2007
Location: Stockton on Tees North Ea
Posts: 750
Default 50 or 100k

Hi, now that I have taken the active components out of my system I need to control the kel84 power amp.
I have 50k and 100k blue Alps pots.
Is there any preference as to which I should use please.
__________________
john & who still runs rings round me
Reply With Quote
  #2  
Old 6th July 2011, 09:19 PM
Really Aardvark Really Aardvark is offline
Member
 
Join Date: Dec 2005
Location: Kent
Posts: 76
Default Re: 50 or 100k

I used a 50k alps, both shunted and straight, quite happily on the front of my kat6550 until I went active with a pre3
__________________
Cheers
GregS
Reply With Quote
  #3  
Old 6th July 2011, 09:23 PM
david counter's Avatar
david counter david counter is offline
Senior Member
 
Join Date: Dec 2005
Location: south west London
Posts: 1,505
Default Re: 50 or 100k

Hi John

I'd go with 100K it's what was standard on my kel84
__________________
David
"I always wanted to procrastinate, but I just never got around to it."






Reply With Quote
  #4  
Old 6th July 2011, 09:38 PM
john & Jake the dog's Avatar
john & Jake the dog john & Jake the dog is offline
Senior Member
 
Join Date: Apr 2007
Location: Stockton on Tees North Ea
Posts: 750
Default Re: 50 or 100k

hi thanks but in confusion now
I've just found the instructions for my 84 build and it includes a 50k but I can't remember what came with the kit
__________________
john & who still runs rings round me
Reply With Quote
  #5  
Old 6th July 2011, 09:43 PM
david counter's Avatar
david counter david counter is offline
Senior Member
 
Join Date: Dec 2005
Location: south west London
Posts: 1,505
Default Re: 50 or 100k

thinking about it, I seem to remember that Peter C did change it to 50K when he started WD, so if your's is a WD one then 50K is right
__________________
David
"I always wanted to procrastinate, but I just never got around to it."






Reply With Quote
  #6  
Old 6th July 2011, 10:44 PM
john & Jake the dog's Avatar
john & Jake the dog john & Jake the dog is offline
Senior Member
 
Join Date: Apr 2007
Location: Stockton on Tees North Ea
Posts: 750
Default Re: 50 or 100k

thanks David, that's cleared that up, I'll fit the 50
__________________
john & who still runs rings round me
Reply With Quote
  #7  
Old 26th July 2011, 09:41 PM
bikerhifinut bikerhifinut is offline
Senior Member
 
Join Date: Jan 2006
Location: Penrith, Cumbria
Posts: 1,128
Default Re: 50 or 100k

Either will work as well.
It's a high input resistance so theres no worries.

I've even had great results with a passive pre that used a 10k pot.
Reply With Quote
  #8  
Old 16th October 2011, 12:09 PM
Yellow's Avatar
Yellow Yellow is offline
Senior Member
 
Join Date: Jan 2006
Location: Littlehampton, W. Sussex
Posts: 157
Default Re: 50 or 100k

Quote:
Originally Posted by Really Aardvark View Post
I used a 50k alps, both shunted and straight, quite happily on the front of my kat6550 until I went active with a pre3
Hi,

Interested to hear how you found the difference between the active and passive? I'm running an active pre currently, and been thinking of moving to a passive for ages but never got around to it. My experience a long time ago, was not that favourable towards passives, but I have an open mind and would welcome any feedback on passive pre's feeding the KaT6550.

Cheers,

Neil.
__________________
Audio-Note CD2.1x/AN-V i/c. Audio-Note M1 with A-N Copper PIO caps & AN-V wire, WAD KaT6550, NAD C368 Hybrid Digital DAC Amplifier with BluOS - Mountain Snow Atlas 2 speaker cable. Bowers & Wilkins Nautilus 804
Reply With Quote
  #9  
Old 16th October 2011, 12:33 PM
john & Jake the dog's Avatar
john & Jake the dog john & Jake the dog is offline
Senior Member
 
Join Date: Apr 2007
Location: Stockton on Tees North Ea
Posts: 750
Default Re: 50 or 100k

Hi, I always prefer just a good quality volume pot.
I don't understand why a pre-amp is required with all it's circuitry when the signal from the cd player is a couple of volts, easily enough.
Only record decks would need pre-amplification and I'm sure that a small dedicated simple amplifier could bring it's signal up to line level.

My kel 84 just has an Alps and my DIY Ferrograph amp has just a blue Alps.

Simple is always best or that's what my GF say's to me, don't quite know what she's getting at
__________________
john & who still runs rings round me
Reply With Quote
  #10  
Old 16th October 2011, 01:16 PM
pre65's Avatar
pre65 pre65 is offline
Senior Member
 
Join Date: Jan 2006
Location: Ashen- Essex/Suffolk bord
Posts: 4,538
Default Re: 50 or 100k

Impedance matching is a big part of it.

A zero gain buffer could be a good idea if CD is your source.
__________________
Philip.

Everything in this post is my honest opinion based on what i thought I knew at that very moment in time.
Reply With Quote
Reply


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 08:19 PM.


Powered by vBulletin® Version 3.7.3
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright World Designs