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Klipsch RP150M modify crossover


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Hello Klipsch forum.

I'm thinking of upgrading the components in the crossovers in my RP-150M speakers, since they look a bit cheap.

See attached pictures.

The components I want to change is the capacitors and the resistors. 

The resistor to the tweeter/horn has a value of 11 Ohm, 10 W, and the capacitor is a 3,9 uF, 100V (both in series and the coil in paralel).

To the woofer, the capacitor has a value of 36 uF, 150V (in paralel with the coil).

I'll keep the coils for now.

I'm limited to available components in Norway (from Jantzen: Cross Caps and Superes resistors).

What do you think, should I change the resistors and the capacitors?

 

It will be the following components:

Superes 1,00 Ohm and 10,0 Ohm (in series), 10 W, 1% resistors

Jantzen Cross Cap 3,9 uF 400VDC 5% and Jantzen Cross Cap 36,00 uF 400VDC 5%

 

Thanks

 

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1112.jpg

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  • 4 months later...
  • 11 months later...

Is there an update…how did your upgrade turn out. I have the same speakers and have just bought all new crossover parts, Jentzen 36 cross caps. 3.9 superior z cap, Mundorf 11 ohm resistor and solen coils. Will work on them when time allows.

 

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Well I completed the rp 150m overhaul. After stripping them clean I installed some No-Rez all around inside where there were flat sides except the bottom, then added small strips of Dyna-Matt on the woofer stamped metal cage. The crossover with the new parts on a board took up the whole bottom of the cabinet. 
The conversion complete I’m pleased with the outcome. 
The sound stage opened up considerably, imaging is spot on. Bass is tighter, stand up bass is more present, defined.

Voices seem more natural, Nora Jones was a little thin on the un-modded speakers. She is more present now, fuller. 
“Explorations in space and time” sound stage was the entire front of the room, way outside of the speakers.

Put on John Coltrane and his sax and…wow. In general all the music seems cleaner, more present, more defined. 
I wasnt trying to change the frequency response curve, just tighten up and clean up the sound. So used the same parts values as the original. I think it worked.

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Well I completed the rp 150m overhaul. After stripping them clean I installed some No-Rez all around inside where there were flat sides except the bottom, then added small strips of Dyna-Matt on the woofer stamped metal cage. The crossover with the new parts on a board took up the whole bottom of the cabinet. 
The conversion complete I’m pleased with the outcome. 
The sound stage opened up considerably, imaging is spot on. Bass is tighter, stand up bass is more present, defined.

Voices seem more natural, Nora Jones was a little thin on the un-modded speakers. She is more present now, fuller. 
“Explorations in space and time” sound stage was the entire front of the room, way outside of the speakers.

Put on John Coltrane and his sax and…wow. In general all the music seems cleaner, more present, more defined. 
I wasnt trying to change the frequency response curve, just tighten up and clean up the sound. So used the same parts values as the original. I think it worked.

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I used 3 1”x3” heavy duty Velcro strips to hold the board down. I thought that might make it easier to get out if adjustments to the crossover were needed…as in by “pass cap”…😉

Also placed some fiberfill against the back wall before buttoning thing up.

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