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Rebuilding Crossovers

L

Lucsig

New Member

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I am refurbishing some vintage 2-way speakers (Goodmans Mezzo SL) and I would like to rebuild the crossovers using point to point rather than just recap the existing PCB. I traced the PCB circuit to work out the schematic, but something looks odd to me: it appears the is no filter on the signal to woofer. I’ve gone over it several times: the crossover only filters tweeter signal. Could this be? I’m not very experienced but this seems off.
 
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Wild guess here: Yes, it is possible on usually small speaker to simply protect the tweeter from low freqs and leave the woofer to run up as far as it will mechanically. I think the Dynaco A-25 only had ONE capacitor in the X/O to block lows to the tweeter.
 
Yes, that’s right! The A25 schematic looks similar to what I traced for the Goodmans Mezzo SL. In fact, it looks like the A25 and my Mezzo SL are very similar (10in woofer, same tweeter, similar cabinet size). Alright then, seems like I got it right. Thanks, aks For your help DesertRat.
 
Lucsig said:

​

I am refurbishing some vintage 2-way speakers (Goodmans Mezzo SL) and I would like to rebuild the crossovers using point to point rather than just recap the existing PCB. I traced the PCB circuit to work out the schematic, but something looks odd to me: it appears the is no filter on the signal to woofer. I’ve gone over it several times: the crossover only filters tweeter signal. Could this be? I’m not very experienced but this seems off.
Click to expand...
View attachment 3799342View attachment 3799342
Lucsig said:

​

I am refurbishing some vintage 2-way speakers (Goodmans Mezzo SL) and I would like to rebuild the crossovers using point to point rather than just recap the existing PCB. I traced the PCB circuit to work out the schematic, but something looks odd to me: it appears the is no filter on the signal to woofer. I’ve gone over it several times: the crossover only filters tweeter signal. Could this be? I’m not very experienced but this seems off.
Click to expand...

Lucsig said:

​

I am refurbishing some vintage 2-way speakers (Goodmans Mezzo SL) and I would like to rebuild the crossovers using point to point rather than just recap the existing PCB. I traced the PCB circuit to work out the schematic, but something looks odd to me: it appears the is no filter on the signal to woofer. I’ve gone over it several times: the crossover only filters tweeter signal. Could this be? I’m not very experienced but this seems off.
Click to expand...
 

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