Just when I thought I might start to understand, I pulled this bundle of wires out of a 27year old set of ALBA speakers. Can anyone figure out what is going on here?
They sound ok but lacking in top perhaps. the "tweeter" is a 2" paper cone!
BTW sorry about the symbols. Standard AutoCAD. Does anyone know where to get a set of SI symbols?
They sound ok but lacking in top perhaps. the "tweeter" is a 2" paper cone!
BTW sorry about the symbols. Standard AutoCAD. Does anyone know where to get a set of SI symbols?
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I think I get it . The components are being used by both drivers at once. The tweeter becomes a coil for the woofer's circuit
So I get a 2nd order butterworth hi pass, and a band pass. Like these.
http://www.carstereo.com/help/Articles.cfm?id=9
Is it ok to do that? Can an inductor work properly with 2 jobs?
Using the calculator and the 20uF value for the cap I guess the crossover frequency is 700Hz. Am I thinking correctly?
If I swapped the paper tweeter for a nicer 8ohm dome. Would the change of inductance make a big change?
So I get a 2nd order butterworth hi pass, and a band pass. Like these.
http://www.carstereo.com/help/Articles.cfm?id=9
Is it ok to do that? Can an inductor work properly with 2 jobs?
Using the calculator and the 20uF value for the cap I guess the crossover frequency is 700Hz. Am I thinking correctly?
If I swapped the paper tweeter for a nicer 8ohm dome. Would the change of inductance make a big change?
phase_accurate said:
It's somewhat of a series crossover, but since the resistor in series with the tweeter is so large a value, the tweeter does not output anything. Could the cap have been in parallel with the resistor instead?
Bill Fitzpatrick said:
Why isn't it a series XO bill... sure looks like it to me. That it has the extra C on the tweeter is kinda weird.
dave
soongsc said:
My member record got corrupt today -- it was like i dies, so i figured time for a new avatar -- this one is called "The Lawyer"
dave
HOLD THE PHONE!!!!!!
The lights are on now. That last band is gold not brown. So the resistor is 4.7 not 470.
It is deffinatly in series soongsc.
The lights are on now. That last band is gold not brown. So the resistor is 4.7 not 470.
It is deffinatly in series soongsc.
Pbassred said:
No
soongsc said:
Caught you again. Twice in one day. Excellent.
planet10 said:
Because the tweeter isn't functioning.
Pbassred said:
That's how i read it right from the 1st... a dB or 2 of attenuation.... with a series XO, it isn't as simple as just reducing its value to get more top, since changinging its value will change the XO point.
dave
sorry for newbee question guys but in series XO does woofer's back EMF affect the work of a tweeter or not?
regards
regards
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