SpeakerTalk Forum Index SpeakerTalk
This forum has been set up to facilitate discussion of 1970s KEF speakers and drive units. The owner of the Forum has no connection with KEF Audio.
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 

That 3 page KEF 104-2 crossover schematic some of us have...

 
Post new topic   Reply to topic    SpeakerTalk Forum Index -> KEF speakers
View previous topic :: View next topic  
Author Message
ColinR
Über Contributor 1000+


Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Tue Jun 20, 2006 9:02 pm    Post subject: That 3 page KEF 104-2 crossover schematic some of us have... Reply with quote

It looks as if it's a bi-wired version - it's not Shocked .

Although the drawing is dated 25-6-91, it's of the circuit from the second single wired version, SP2050 SNo ?~4000-?.

There are some minor inconsistencies between the topography on page one and the actual pcb, but as I've suggested before the drawing is a test piece of some kind as it does not include an image of the printed circuit.

I have a photograph of an earlier, different circuit with a S-STOP, SNo ~500.

So, there were probably four crossover varients in total for the 104-2 Cool .


Last edited by ColinR on Wed Jun 21, 2006 10:03 am; edited 1 time in total
Back to top
View user's profile Send private message
proffski
Über Contributor 1000+


Joined: 22 Aug 2003
Posts: 1296
Location: Tewkesbury UK

PostPosted: Wed Jun 21, 2006 12:49 am    Post subject: Re: That 3 page KEF 104-2 crossover schematic some of use ha Reply with quote

Colin, my memory fails me, did I send you a copy of the 104/2 schematic?

If I did then it certainly is for the bi - wire version. I'll see if I have any other variants hiding away in my archives anywhere.
Back to top
View user's profile Send private message Send e-mail
ColinR
Über Contributor 1000+


Joined: 31 Jul 2004
Posts: 1175
Location: Staffordshire

PostPosted: Wed Jun 21, 2006 8:33 pm    Post subject: Reply with quote

Quote:
did I send you a copy of the 104/2 schematic


Yes and I sent you the other two pages Smile .

Quote:
then it certainly is for the bi - wire version


This is where I'm having problems, getting contented grunts from single wired varient owners with 110013A pcb's where all the components match and "it's different to mine" from bi-wired speaker owners.

So, is the 110113A pcb bi-wired varient a production version, if so what serial number range does it apply to?
Back to top
View user's profile Send private message
proffski
Über Contributor 1000+


Joined: 22 Aug 2003
Posts: 1296
Location: Tewkesbury UK

PostPosted: Wed Jun 21, 2006 8:58 pm    Post subject: Reply with quote

Ah yes, it all comes back now. I'll see if I can can up now with all four variants, that shuld lessen the grunting...
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    SpeakerTalk Forum Index -> KEF speakers All times are GMT + 1 Hour
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group