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KP 301 KP3.0A crossover questions


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#1 twalkonline

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Posted 21 December 2013 - 11:03 AM

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...
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#2 twalkonline

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Posted 21 December 2013 - 02:28 PM

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...

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#3 CECAA850

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Posted 21 December 2013 - 02:55 PM

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.


A Harmony One remote runs a............. Pioneer Elite KURO 150FD display. Anthem D2 pre-pro. 4 QSC PLX 1104 amps. Oppo BDP-80 Blu-ray player. Toshiba XA2 HDDVD player. IB sub with 4 Ascendant Audio 18" drivers powered by a Behringer EP-2500. 2 Klipsch Dean G'd RF-7's, 1 Dean G'd RC-7, 2 RS-7's and 2 RB-35's, all protected by a Furman Elite 20-PFi

Bedroom 1, Lascalas w/ ALK networks and Crites tweeters, Juicy Music modded Crown D-45, Njoe Tjoeb CD player and an Anthem TLP-1. Tuba 18 sub powered by a Behringer A-500.

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#4 moray james

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Posted 21 December 2013 - 05:04 PM

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

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#5 CECAA850

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Posted 21 December 2013 - 05:28 PM

The 301 and 301 II are completely different.


Edited by CECAA850, 21 December 2013 - 05:28 PM.

A Harmony One remote runs a............. Pioneer Elite KURO 150FD display. Anthem D2 pre-pro. 4 QSC PLX 1104 amps. Oppo BDP-80 Blu-ray player. Toshiba XA2 HDDVD player. IB sub with 4 Ascendant Audio 18" drivers powered by a Behringer EP-2500. 2 Klipsch Dean G'd RF-7's, 1 Dean G'd RC-7, 2 RS-7's and 2 RB-35's, all protected by a Furman Elite 20-PFi

Bedroom 1, Lascalas w/ ALK networks and Crites tweeters, Juicy Music modded Crown D-45, Njoe Tjoeb CD player and an Anthem TLP-1. Tuba 18 sub powered by a Behringer A-500.

Bedroom 2, Heresy II's with III upgrade, Carver TFM-15, Carver CT-6 and a Sony CDP C235.

Bedroom 3, under construction.

#6 twalkonline

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Posted 21 December 2013 - 05:32 PM

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.

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