Dahlquist DQ-10 capacitor values?

If the caps you want to replace are not leaking or malfunctioning, one idea is to bypass them with a very small value, like a .01 uf, high quality cap. Bypass just means solder new cap leads to old cap leads, just in case you have not done this before. You don't need to know the values of your existing caps to do this, and it should be a good improvement. Madisound has a good selection of poly caps that will work if you choose this route. If not, you need to buy a meter from Radio Shack, desolder, and measure your caps to get the values.

You can use a capacitance meter to measure them but you will have to remove them from the circuit.

i just built new boards for my dq-10's. new caps & resistors and reused the inductors. i know the values and have a schematic if our speakers are around the same age. don't know for sure what changes, if any were made to newer models. mine are pretty much first run (old) speakers. they weren't even imaged from the factory. the only difference i found on the schematic that i have compared to the actual crossover was some speaker phasing. you'll have to check yours, but all runs and values were identical. let me know if i can help and i'll send you a print.

Brian, have you noticed a sound difference after rebuilding the crossovers? Would you be willing to share the schematic and component values? I would very much appreciate that. I just bought a pair of first generation DQ-10s (1975, not imaged). I'm toying with the idea of rebuilding.

Go here for a crossover schematic.
http://www.diyhifi.org/forums/viewtopic.php?t=291

I am still looking for my instructions from 1978 when I upgraded mine.