Hey all,
Recently a guy gave me a couple old home-built speakers that I scrapped out for parts.
The passive crossovers were made by Peavey (and mis-matched), and I can't seem to find the specs on them.
I'm not sure how to describe them, as they seem to be some sort of 1st order-Low / 2nd order-High (??).
PV# 70501558, C1=2.0uF, L1=0.363mH, L2=0.60mH
PV# 30501592, C1=1.5uF, L1=0.342mH, L2=0.738mH
Can anybody decipher the xover freq's on these?
Regards,
JohnR
Recently a guy gave me a couple old home-built speakers that I scrapped out for parts.
The passive crossovers were made by Peavey (and mis-matched), and I can't seem to find the specs on them.
I'm not sure how to describe them, as they seem to be some sort of 1st order-Low / 2nd order-High (??).
PV# 70501558, C1=2.0uF, L1=0.363mH, L2=0.60mH
PV# 30501592, C1=1.5uF, L1=0.342mH, L2=0.738mH
Can anybody decipher the xover freq's on these?
Regards,
JohnR
The tweeter filter in the first option resonates at 6kHz and the second one at 7kHz. This isn't necessarily where it crosses but it gives a clue.
And that is about what I calculate for the high pass as a 2nd order.
But if I figure the low pass as a 1st order, I come up with 1800-2000-ish?
which means there will be a big "hole" in the middle?
Again, that is why I pose this question, I'm not familiar with this topology, and I'm quite certainly confused.
🤔
Perhaps there is some other interaction between the HP and LP that I don't understand?
JohnR
But if I figure the low pass as a 1st order, I come up with 1800-2000-ish?
which means there will be a big "hole" in the middle?
Again, that is why I pose this question, I'm not familiar with this topology, and I'm quite certainly confused.
🤔
Perhaps there is some other interaction between the HP and LP that I don't understand?
JohnR
The responses of the speakers aren't flat, we can only guess what the combined (filtered) responses are.
Knowing the impedance curve of the drivers involved could be helpful in plugging the numbers into a crossover calculation program
No,No,No...
Forget about speaker response and impedance curves, and what we "guess it might be"...
I want to understand this circuit in a theoretical 8 ohm load on each output.
I already tried plugging it into XSIM with FRD/ZMA files for a known tweeter and woofer, and it gave me a bizarre response.
there is something about this design that doesn't make sense.
Forget about speaker response and impedance curves, and what we "guess it might be"...
I want to understand this circuit in a theoretical 8 ohm load on each output.
I already tried plugging it into XSIM with FRD/ZMA files for a known tweeter and woofer, and it gave me a bizarre response.
there is something about this design that doesn't make sense.
The crossover frequency in the PR 15 is 3KHz.
Replacement crossover for Peavey PR15 PA speaker, model or item number 30501593.
Genuine Peavey X-over for PR15 passive PA speakers. This Peavey cross-over part number 30501593 replaces previous cross-over 70501558.
The genuine Peavey crossover board includes RX 14 HF driver protection, 2 x 6.3mm (1/4") female jack sockets and cabling to connect to the main PA speaker and the high frequency driver.
The x-over board has pre drilled holes for mounting onto the PR15 input socket panel.
Peavey crossover 30501593. Wiring is as follows:
Red: High Frequency Positive
Black: High Frequency Negative
Yellow: Low Frequency (Woofer) Positive
Blue: Low Frequency (Woofer) Negative
If your High Frequency Driver is not marked '+' or '-', there are bumps indicating positive and negative.
One bump is Positive, Two bumps is Negative
Replacement crossover for Peavey PR15 PA speaker, model or item number 30501593.
Genuine Peavey X-over for PR15 passive PA speakers. This Peavey cross-over part number 30501593 replaces previous cross-over 70501558.
The genuine Peavey crossover board includes RX 14 HF driver protection, 2 x 6.3mm (1/4") female jack sockets and cabling to connect to the main PA speaker and the high frequency driver.
The x-over board has pre drilled holes for mounting onto the PR15 input socket panel.
Peavey crossover 30501593. Wiring is as follows:
Red: High Frequency Positive
Black: High Frequency Negative
Yellow: Low Frequency (Woofer) Positive
Blue: Low Frequency (Woofer) Negative
If your High Frequency Driver is not marked '+' or '-', there are bumps indicating positive and negative.
One bump is Positive, Two bumps is Negative
well, that's a good reference for the 70501558/30501593,
I had found a document from Peavey containing most of that, but it did not include "3kHz".
but what about the 30501592?
I had found a document from Peavey containing most of that, but it did not include "3kHz".
but what about the 30501592?
