G87

Hell yeah thank you guys!!

Anyone know what horns these are? Seller says they're from Jubilees, but they're definitely not 402's, nor are they the grand HF from the 3-way Jubes. 2nd pic will be below in a reply.

Thanks guys. @Deang PM sent.

I recently acquired a set of 3 Klipsch KP-456 speakers with no LF or HF crossovers. (Sold that way for use in theaters with active crossovers/bi-amping....2 K-45-KP 15" woofers and 1 K-1132 on the K506 horn per cab) The LF crossover is very simple and if I understand correctly it only serves to achieve the 650hz crossover point and attenuate the LF to match the HF. So my real question is about the HF crossover - I know I can achieve the simple 12db/octave crossover with active digital or analog means...but does anyone know how simple it would be to EQ the HF digitally or otherwise? If there are huge dips and/or peaks, can DSP take care of those, or are allowable adjustments possibly not enough? (I've never tried DSP) I've emailed Klipsch, ALK, and Crites to see about ordering passive crossovers....but since I'm also interested in digital room correction and crossovers, I wanted to see how feasible this would be for the 456 HF. Attaching the schematic for the HF for reference. I've got 2 of them hooked up right now with a noisy old Crown VFX2A analog crossover (18db slope at 650hz) and they're showing MAJOR potential and sound really good with some treble boost, but I imagine they have some untapped potential that proper EQ'ing could bring out. Want to get them to their highest potential asap! Thanks KP-456-HF B-1.pdf

I noticed that! Explains the one 'missing' cap and the cap with split coating on the other speaker. They'll definitely be getting some Mills resistors soon. I got these from the original owner who ran them with a BIG Denon receiver that he bought at the same time. I don't remember the model number but it was rated at 170wpc. (had either 5 or 7 channels) He said he was in his twenties at the time, and didn't go in to details, but I think the crossovers tell the story pretty well.

Great, I won't. Thanks all.

Next question - the schematic specifies that all caps should be +/- 5%. How important do you guys think that is in the LF network? All the caps I ordered for the HF network are +/- 1% or 5%. But the LF caps I ordered are +/- 10%. Is that too much deviation in the LF network or is that acceptable? I was thinking on most speakers with a low crossover frequency from the woofer to the mid/tweeter, it wouldn't matter much for imaging....but since these woofers cross over at 1500hz (IIRC), the +/- 5% may be more important here..... Whatcha think?

Ahhh ok well that makes things a lot easier! Thanks yet again moray. (I'm G871 on AK)

@Deang I'm tagging you here because I know you're a crossover expert, but anyone else with input feel free to chime in! I ordered caps last night, but then realized that the ONLY 47uF electrolytics PE has are +/- 10% and only 100V. The stock caps are 5% and 150V, and I'm having trouble finding lower-priced caps that match. What if I combine 2 or 3 smaller caps with 50-75V ratings - would the V rating stack to 150+? I haven't covered every single base yet, but most - I'll keep looking in the meantime.

Hey np! I appreciate the offer and the effort. Sitting down to put the order in right now.

Ha np, I've done crossover work before so as long as I get the values right I'm good to go. I'll be replacing all the caps and possibly the resistors with Mills resistors, per @Deang's recommendation in another CF thread. I'll probably use Dayton Precision series poly metalized caps for the caps that are in-series in the HF network, and Dayton regular poly metalized caps for the caps that are not in-series in the HF network. I'm thinking I'll use Parts Express electrolytics for the LF network. Ah ok! No problem.

The 47uF stated in the schematic @wvu80 shared would make sense, because that's the value of the detached cap combo is. (33 + 14) Just didn't want to trust that initially since it didn't look factory... But if we can get a confirmation, I'll be putting an order in tonight! So excited

Whoa! An actual schematic! I looked all over the net for that last night. Your reasoning makes sense - from what I've read, V2 should have the clear wiring. But if Jirachi can get us a pic, we can have absolute confirmation! That would be wonderful!! On your V3's, if you can see a value on the cap in question (position C1 on the board) that would tell us for sure whether the schematic wvu80 shared is correct for my speakers. Hi Deang, I know from my reading that you're no stranger to crossovers - pleasure to have you here. I'm not understanding though - where are you getting the 33uF from?

I do have a DMM - I didn't know you could measure capacitance with one! I'll have to look in to that, thanks! Also, the smaller Erse cap isn't bulging but it's coating DOES look like it has melted and expanded, like bubbled up and then deflated, leaving it all deformed and wrinkled. So, maybe a good possibility that it did get hot enough somehow. Yeah I thought about that last night! Thinking I'll disassemble and check it out. Maybe tonight. Thanks y'all.