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Surprising Pioneer CS-63 speakers

ymarko

Super Member
I know CS-63 are TOTL speakers and they are larger and older brothers of famous CS-99A, another TOTL speakers.
But maybe due to rarity (they were built only one 1970 year) they are not as well-known as 99A. There're also CS-63DX, more common then CS-63.

I got CS-63 as my birthday present to my collection long ago.
Today I finally had time to actually play them, so I moved them from collection room to music room.

I was totally blown away. I expected something maybe above average, but they actually played absolutely gorgeous sound that holds well against few-times-more-expensive speakers (as I always say, market value has nothing to do with sound).

The most surprising was the fact that CS-63 has at least the same efficiency as Klipsch Forte I, and probably even a bit more efficient.

Later I checked specs and I found Forte I is 98 dB (I believe it's too conservative, considering a small Heresy II, made on the same period, is 100).
Pioneer CS-99A = 97 db
Pioneer CS-63DX = 99 dB
I cannot find Pioneer CS-63 specs, but I think they should be about equal to CS-63DX.
For contrast, HPM-100 is only 92.5 dB.

Anyway, I didn't expect Pioneer CS-63 beats Klipsch Forte in efficiency, so I report it here.

When I have more time, I will test CS-63 versus CS-99A and HPM-100; it should be interesting.
 
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I have a pair of CS-77s. Similarly, they will produce a gigantic amount of sound from a very low-power amplifier. I wish they had a bit better treble, though they might need some refurbishing....
 
I know this is an older post, but I'm adding my 2 cents, as I've had a psir, and am about to snag another. I don't get the hate on these. I have JBL 4311B monitors, L-100 Centuries, Dynamo A-25, etc, so I know good sounding speakers when I hear them. If these are working properly, I think they are a great speaker. I also had a pair of CS-901 that I regret selling. These hung right there with the JBL. I can't speak for the dx model, but the CS-63 I had, sounded pretty dang good on my Sansui 9090db.
 
I have a pair of Pioneer CS-63DX and I recaped them. Running them with a Sansui 5000X they sound great! If you find a pair pick them up and do a re-cap on them you will be glad you did.
 
I’m interested in hearing what I should do to make sure these are “as new” again. I just found a pair of pioneer CS 63s in darn near mint condition here in SoCal. Been stored away upstairs in a hoarder’s bedroom unused since the were purchased in 1969 I was told. Made in Japan. Came with three albums still in their plastic wrapped sleeves from 1967-1968. John Mayal and the Bluesbreakers “Bare Wires;” the last album with the Bluesbreakers name. Paul Butterfield Blues Band “ In My Own Dream,” and Donovan In Concert Live at The Anaheim Convention Center (his first live album). They should sound great and maybe as intended on these. I’ve read good things. And they are heavy AF!IMG_3846.jpegIMG_3845.jpegIMG_3857.jpegIMG_3858.jpeg
 
@hmartincalle

Welcome to AK and here's hoping you enjoy your time here!

I would suggest pulling off the grill cover and inspect the components for any deterioration

They should look like this (random pic from the web)

Screen Shot 2024-02-16 at 8.02.20 PM.png

If they look good hook them up to some amplification at moderate levels and let them play for a few hours to break back in seeing as they having sitting idle for an extended period of time.

Don't judge them right away as any speaker of that vintage will need to get back up to speed.

If you decide they're keepers and plan on being your main speakers a lot of folks will suggest "recapping" the internal crossover as the 50 plus year old parts are more then likely past their shelf life and would benefit from new ones.

To give you an idea of what a crossover in these looks like here's a thread w/pics of a similar pair


Here's the schematic for your model

cs-63.jpg


What do you plan on pairing them with?
 
IMG_3846.jpegIMG_3845.jpegHey :) Thanks for the welcome, the info, and the encouragement. I thought I’d posted pics but being new here maybe I screwed it up. It’s possible you know. The speakers are perfect. Seems to me, if you went to Woodstock, you were also listening to music on something like this. As for condition: No bad surrounds or “foam.” It’s more a rubbery stuff that still looks new on the woofer. All others; the mid, tweeter, and horn also appear as new. No dented or damaged cones. I’m proficient at tackling DIY projects but am a noobie to replacing parts in speakers, amps, reading and understanding diagrams, etc. I am confident I can learn what’s what. My questions would be more toward finding the most original replacement or highest quality versions of same if I have to recap or do other things. I’d also be interested in parts that would be considered upgrades. I have a couple of amps and receivers. A Yamaha CR-800 is my everyday unit. I also have a great Sansui AU-317, and the whole Nakamichi PA-5 ensemble; amp and matching pre-amp, and tuner. I just picked up a Hafler DH-220 and am searching for a pre-amp. I might be getting a Yamaha 820. My main speakers are Maggie IIIs with the Nak gear. But when I find things like DCM Time Windows (currently using with the Yamaha) or these CS-63s I’ll use the Yamaha or the Sansui. The speakers are rated for 60 watts anyway so they’ll be fine. I appreciate your comments! Thank you.
 

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.. the mid, tweeter, and horn also appear as new. No dented or damaged cones. I’m proficient at tackling DIY projects but am a noobie to replacing parts in speakers, amps, reading and understanding diagrams, etc. I am confident I can learn what’s what. My questions would be more toward finding the most original replacement or highest quality versions of same if I have to recap or do other things. I’d also be interested in parts that would be considered upgrades.

They look great and here's hoping they don't need replacing. If and when you get to that point, there's a lot members here who can point you in the right direction and assist with the process.
 
I just picked up a very nice set as well om Wichita KS, I gave $300 for them what did you have to give for yours? Had to repair one horn and I recapped the crossovers with Dayton Audio grade caps. I will have to say these have the biggest improvement from crossover recap then any other speakers I have done. Really wakes them up!
The person I purchased them from give me a instruction manual, according to it they are rated at 104 db/watt efficiency.
 

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I just picked up a very nice set as well om Wichita KS, I gave $300 for them what did you have to give for yours? Had to repair one horn and I recapped the crossovers with Dayton Audio grade caps. I will have to say these have the biggest improvement from crossover recap then any other speakers I have done. Really wakes them up!
The person I purchased them from give me an instruction manual, according to it they are rated at 104 db/watt efficiency.
Thanks for the great information! I paid $60 for the pair. They were asking $150. I’d offered $50. It was early in the sale. I thought they’d hold firm but they didn’t. When I said $50 they said $60. It was an estate sale and I think they were itchy because traffic was slow.
 
I just picked up a very nice set as well om Wichita KS, I gave $300 for them what did you have to give for yours? Had to repair one horn and I recapped the crossovers with Dayton Audio grade caps. I will have to say these have the biggest improvement from crossover recap then any other speakers I have done. Really wakes them up!
The person I purchased them from give me an instruction manual, according to it they are rated at 104 db/watt efficiency.
Are you who has these for sale on Facebook marketplace? Just saw a set that appear to be in Wichita and was looking them up over here
 
I'm in Ottawa, KS. Just saw those on Marketplace. Really nice looking. What are the dimensions?
 
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