G87 Posted August 25, 2023 Share Posted August 25, 2023 (edited) 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 Edited August 25, 2023 by G87 1 Quote Link to comment Share on other sites More sharing options...
jjptkd Posted August 25, 2023 Share Posted August 25, 2023 5 hours ago, G87 said: 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)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 ou I believe @Dave A is the resident 456 expert haven't seen him here for awhile you might find him on eBay 2 Quote Link to comment Share on other sites More sharing options...
TasDom Posted August 25, 2023 Share Posted August 25, 2023 1 hour ago, jjptkd said: I believe @Dave A is the resident 456 expert haven't seen him here for awhile you might find him on eBay Or on AK https://audiokarma.org/forums/index.php?forums/the-klipsch-korner.131/ 3 Quote Link to comment Share on other sites More sharing options...
OO1 Posted August 26, 2023 Share Posted August 26, 2023 On 8/25/2023 at 12:26 PM, G87 said: Klipsch, stick with klipsch passive crossovers Quote Link to comment Share on other sites More sharing options...
Deang Posted August 26, 2023 Share Posted August 26, 2023 @G87 I’m authorized to build vintage networks for Klipsch - normally Heritage - but I have OEM parts to build these if you’re interested. 1 1 Quote Link to comment Share on other sites More sharing options...
G87 Posted August 27, 2023 Author Share Posted August 27, 2023 Thanks guys. @Deang PM sent. Quote Link to comment Share on other sites More sharing options...
Woofers and Tweeters Posted January 5 Share Posted January 5 On 8/25/2023 at 12:26 PM, G87 said: 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. I have had a pair of KP456 with 'refreshed' x-overs for a while and just this week put them back into my main listening room. I would love to go to active networks for the same as you. What did you end up using? Quote Link to comment Share on other sites More sharing options...
OO1 Posted January 5 Share Posted January 5 On 8/27/2023 at 10:24 AM, G87 said: Thanks guys. @Deang PM sent. good choice Quote Link to comment Share on other sites More sharing options...
Invidiosulus Posted January 16 Share Posted January 16 An active DSP and a pair of amps would run that setup with ease. The Dayton DSP-408 is super cheap and easy to use and offers a lot of features. The Dayton DSP doesn’t specifically offer room correction but there are ways to calculate some room averages with REW and generate EQ settings. If you are interested in tweaking crossovers, active or passive, you really need to get a calibrated mic and learn to use REW to take measurements. Otherwise you are shooting in the dark. On 1/5/2024 at 7:30 AM, Woofers and Tweeters said: I have had a pair of KP456 with 'refreshed' x-overs for a while and just this week put them back into my main listening room. I would love to go to active networks for the same as you. What did you end up using? Quote Link to comment Share on other sites More sharing options...
Woofers and Tweeters Posted January 16 Share Posted January 16 20 minutes ago, Invidiosulus said: An active DSP and a pair of amps would run that setup with ease. The Dayton DSP-408 is super cheap and easy to use and offers a lot of features. The Dayton DSP doesn’t specifically offer room correction but there are ways to calculate some room averages with REW and generate EQ settings. If you are interested in tweaking crossovers, active or passive, you really need to get a calibrated mic and learn to use REW to take measurements. Otherwise you are shooting in the dark. Thanks I went with a Xilica XP3060 a couple of years ago. I still don't have the amps that I want, but most of the time I don't listen very loud. 2 Quote Link to comment Share on other sites More sharing options...
Klipsch Employees Trey Cannon Posted March 17 Klipsch Employees Share Posted March 17 If you still have questions....I may be able to help. 3 Quote Link to comment Share on other sites More sharing options...
SpeakersFTW Posted April 10 Share Posted April 10 (edited) Nixed. Edited April 10 by SpeakersFTW Quote Link to comment Share on other sites More sharing options...
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