Guys need help in finding out crossover layout. I can't understand the scheme fully especially in tweeter region.
As far as i can understand woofer works in that way:
As far as i can understand woofer works in that way:
An externally hosted image should be here but it was not working when we last tested it.
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That looks reasonable.
From the photos I'd say it's a pretty standard second order crossover. The resistors are likely for level adjustment.
If you trace the foil from the binding post, you will likely find a capacitor in series with a coil to ground... maybe a couple of resistors, leading to the tweeter.
I can't make out what 3 resistors do in tweeter network.
An externally hosted image should be here but it was not working when we last tested it.
One Suggestion;
Un-solder one end of each of those 5 resistors (& then stand them up towards the camera to minimize their profile within your next camera shot ).
Anyone helping you needs to see ( an unrestricted ) view of the backside of that PC board.
Use Hemostats as a heat-sink ( and gripper ) to pull free ( from the PCB ) the heated end of each resistor.
Un-solder one end of each of those 5 resistors (& then stand them up towards the camera to minimize their profile within your next camera shot ).
Anyone helping you needs to see ( an unrestricted ) view of the backside of that PC board.
Use Hemostats as a heat-sink ( and gripper ) to pull free ( from the PCB ) the heated end of each resistor.
I see 5 resistors ( obscuring one's vision ) on that PC board.
Why are you now talking about 2 Terminals?
Back to the beginning, once the schematic is fleshed out, what do you intend to do with that information?
I want to pull second terminal plate out of the speaker but can't do it. It is glued in its position very tightly. I saw many speakers but glued terminal plate is something new.
Back to the beginning, once the schematic is fleshed out, what do you intend to do with that information?
I want to upgrade crossover a little bit
. I have measured speakers and found out that DM 3/7 has some potential (good cabinets, high quality speakers) but crossover is not optimal. Yep. I came to the same conclusion
. The only thing i don't understand is R4 0.33Ohm resistor.
Ok, I can barely see it but it seems the 33 goes directly in parallel with the tweeter. This way, your meter is seeing it in parallel with each of the resistance of the other two resistors and the inductor in series.
Now, the smaller 2.2 looks to come from the (+) terminal. Where does the other end go?
Now, the smaller 2.2 looks to come from the (+) terminal. Where does the other end go?
I can't see exactly where other end of R4 goes. But I think it should be like this:
An externally hosted image should be here but it was not working when we last tested it.
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