Help with M&K S1

slick.one

slick.one

Active Member
I just picked up a nice pair of old M&K S1 sattelites. These are the ones with the Peerless tweeters and without the mid and tweeter adjustments. All four drivers work in the pair but one speaker has lower output from its woofers. What do you guys suspect is going on and how should I proceed with a solution?
THANKS!
 
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Possibly a bad solder connection or loose wire. First I would check the wiring between the input terminals and the crossover and from crossover to woofers. If there is an intermittent or just high impedance connection somewhere, that could explain it.
 
Are they wired in series or parallel? Or do they have completely different outputs from the crossover? Some speakers with dual woofers have them crossed at different frequencies.

Do you have a meter? Disconnect the woofers (mark the wires so you can get them back right) and check the resistance of each voice coil by itself. They should be the same and if it's an 8 ohm speaker, probably about 5-6 ohms DCR unless they're 4 ohm woofers in series.
 
Poking around the web, these 1) are highly thought of and 2) look to have rather complicated crossovers which may have some big electrolytic caps. Could be the culprit.

Are they S1 or S1B?

M&K has been making speakers for a looooong time. Learned all about em last year when I came across an original DBE Sub (Double Bottom End), one of the earliest home subs, about 1973. Actually traded some emails with Ken Kreisel. Those guys pioneered the sub/sat thing.
 
Mine are actually S-1A. They have the Peerless tweeters as opposed to the Vifas. The two woofers are crossed the same, I'm pretty sure. I'm a big fan of M&K and currently own a pair of S-100B's with an S-125 Center and S-80 surrounds. I also have a beat up pair of S-85, a V-90 and MX-70 subs. I've always wanted a pair of S-1(A,B, or C). Got a real nice pair of original stands with the S-1As. I have a piece of junk Rat Shack meter and just last week decided I needed something that actually works!
 
You can always remove the drivers and hook them up directly to a source material that you can easily judge output by ear. Then, hook them up and listen for a minute... see if the drivers alone sound low compared to one another. If not, you know it's most likely a crossover or solder issue. Just be sure to pick a source material that doesn't have excessive bass.
 
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