Sign in to follow this  
Followers 0
twalkonline

KP 301 KP3.0A crossover questions

6 posts in this topic

I feel like an archeologist, unearthing things that no living person has ever seen!

First, does anyone have a schematic for this crossover? That would probably answer my questions. I found one for the KP 301-II, but this is different in several ways. I expected this one to look like a KP 201, crossover, but it does not.

I don't see anything I recognize as a poly switch, although there are a couple of components in the tweeter circuit that I can't identify. They are epoxy potted in little black plastic cases and have no markings. Anybody know what these are? This version does not have separate HF and LF inputs for bi-amping, but it has a separate fuse for the tweeter.

Would appreciate comments...

Share this post


Link to post
Share on other sites

After tracing the circuit, I've determined that the black epoxy potted mystery components have to be capacitors. Am guessing at values. The other caps are labeled 4J. Can't remember how that translates to uF.

Hope my sketch of circuit is legible...

post-51126-0-50980000-1387654101_thumb.j

1 person likes this

Share this post


Link to post
Share on other sites

I believe Bob Crites has the schematic. There's also a general schematic thread somewhere with many drawings. I know there's a 301 drawing in it but I don'y know if it's a 1 or a 2. You might try searching for it.

Share this post


Link to post
Share on other sites

should be a similar network here. Best regards Moray James.

post-44375-0-64700000-1387663424_thumb.j

Share this post


Link to post
Share on other sites

The 301 and 301 II are completely different.

Edited by CECAA850

Share this post


Link to post
Share on other sites

Thanks. It's most similar to the Chorus I, but not exactly. KP has additional low pass filter in the mid circuit. Have redrawn - I think it's correct this time.

post-51126-0-27860000-1387665146_thumb.j

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now
Sign in to follow this  
Followers 0