I have Speakerlab .1's, 1's, 2's 2.5's and 7's that I want to recap and make them sing as they did in the 70's. Finding information on line has been disappointing. Does anyone have accurate capacitor information for each, and a procurement source for these crossover capacitors. Thanks.
Speakerlab Crossover Help
- Thread starter DJ Jim
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HI DJ Jim, and welcome to AK with your first post. If you plan on re-capping, you'll have to open them up eventually, and since you're already in possession of all five speaker models, the very best thing you can do is open them up and make notes and take pics of the innards. Then post pics and additional observations here in this thread (100KB file size max is perfect), and you'll begin to get all the specific help that you need. Best 'o' luck.
Thanks so much. I already have all but the Seven's open. Here is the crossover pic for the Speakerlab .1's. Right away I'm confused by the 16 microfarad for the mid's on one of the crossover boards, and the 24 microfarad for the mid's on the other crossover board. I referenced the 1980 Speakerlab catalog; and if I'm reading correctly, they should be 8 microfarad for the M608R mid's. Both crossover boards seem to have OEM capacitors, yet, in drastically different uF configurations for the mid's. Thus my confusion on what is correct. I am not a Tech'y and don't speak all the lingo, but I'm learning
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The resistor at upper right is definitely different too. And the number on the board. These are two different versions.
Surprised that a catalog would have schematics or part values - can you post a pic of that?
A lot of AKers like Dayton metallized polyprop 5% caps from Parts Express for values up to about 12-15 uf, then nonpolar electrolytics for the larger ones. PE has NPEs, or I've heard that Mundorf E-caps are really good and not very expensive. They can be found at Parts Connexion and Soniccraft.
But let's get your schematic sorted out first, that's hinky!
Surprised that a catalog would have schematics or part values - can you post a pic of that?
A lot of AKers like Dayton metallized polyprop 5% caps from Parts Express for values up to about 12-15 uf, then nonpolar electrolytics for the larger ones. PE has NPEs, or I've heard that Mundorf E-caps are really good and not very expensive. They can be found at Parts Connexion and Soniccraft.
But let's get your schematic sorted out first, that's hinky!
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Do the woofers look exactly alike? Speakerlab went through changes in driver suppliers at times and your "pair" of speakers might not be a pair at all but 2 singles from different production years. There were also 8 and 4 ohm versions of the .1's in 1979 & '80 but in 1981 only 8 ohm. But if the coils are the same value on both crossovers they are probably the same impedance.
Cheers,
James
Cheers,
James
Aha. If the woofers are different but are correct Speakerlab drivers (not replaced later by someone) then it's probably best to replace what's in there with the same values even though the two are different. Hopefully Speakerlab's goal with making those changes was to keep that model sounding close to the same throughout.