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I posted this on the Peavey Forum but thought I'd post here in case someone has thoughts.
I have a Peavey 410 TVX 4 ohm Bass cabinet.It has 4 10" speakers and a horn.It also has a filter network.Please read carefully. I want to use it with a STEREO Power Amp that is not capable of being bridged. The 2 top speakers are wired in series for 8 ohms. The two bottom speakers are wired in series for 8 ohms. Then the top pair and bottom pair are wired in parrellel for a final load of 4 ohms.This goes to the filter circuit board.There are 2 wires as well that feed the horn from this board.
What I want to do is un parrellel the top from the bottom run the bottom pair to an added jack and use the original jack to power the top pair and the horn.Two bottom speakers would be 8 ohms & top 2 would be 8 ohms.My thinking anyway is that the speakers are fed full range & that the circuit board is only a high pass filter to the horn. I doubt,but could be wrong, that it's an actual two way crossover.
Comments from the techs please.
Thanks!!!!!
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Your thinking about that board being a crossover is probably correct, if the horn is an electromagnetic and not piezo horn.
My question is, "Why do this?"
The power handling of the two speakers would be one half of the present rating.
What is the power capability of one channel of this amp when driving 8 ohms?
--Mac
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Quote:
Your thinking about that board being a crossover is probably correct, if the horn is an electromagnetic and not piezo horn.
My question is, "Why do this?"
The power handling of the two speakers would be one half of the present rating.
What is the power capability of one channel of this amp when driving 8 ohms?
--Mac
Mac I'm it's a filtering network of some sort one question is ,is it:
1. a crossover with highs going to the horn lows to the drivers
2. a high pass filter were highs go to the horn and full range to the drivers.
Did I mention that this is not a PA cab. It's and extended range bass cab. That's why I think High Pass.
Nothing will be gained(no pun) by doing this.It's only shifting around were 3 dB comes from I know. It just affects my brain to only run one side of the amp with a load.
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John.
Why not ditch the horn and filter board and run each half of the amp straight into a pair of 10s. I'm guessing, but the 10s probably run up to about 5K, so depending what you're putting through them it might be an easy fix.
ROG.
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Or what would another cabinet like it cost on the used market? Or what could you get for it to then turn around and buy 2 different cabs?
I am using the new 1040XTRAEZ form this year. It has just 2 lines.
1. How much did you make in 2023?
2. Send it to us.
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Quote:
1. a crossover with highs going to the horn lows to the drivers
2. a high pass filter were highs go to the horn and full range to the drivers.
There's a chance you can get the service manual/schematic from PV...
Passive circuit, look for a largish coil on the board, typically the sign of number 1.
--Mac
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Yea it's a crossover.The xover point is 5K. If I change the impedance on the low side from 4ohms to 8 ohms(2 top speakers) it'll raise the xover point to 10K thus in affect making the low side a straight shot(full range) and not effecting the high end.Bottom 2 speakers a jack of there own.
Shoot I should just buy an amp I can bridge but this is more fun!
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Quote:
Yea it's a crossover.The xover point is 5K. If I change the impedance on the low side from 4ohms to 8 ohms(2 top speakers) it'll raise the xover point to 10K thus in affect making the low side a straight shot(full range) and not effecting the high end.Bottom 2 speakers a jack of there own.
Shoot I should just buy an amp I can bridge but this is more fun!
The Peavey site has .pdf's available for the TX and TXF models, so I took a look. No schematics, that I could find, anyway.
That high frequency driver is actually part and parcel of these systems. Eliminating same would very likely result in a very different sounding bass guitar, as there would be no note initiations, "pickmarks" and the likes that are so important to defining bass notes.
Raising the xover point to 10K would essentially be the same, since those all-important note initiations are going to be around the 5K mark. BUT -- I would be concerned that the treble driver would be being put through needless high frequency excursions that would easily damage the driver.
Then there is the concept of amplifier power, and the dB scale.
Recall that the dB scale is "log 10" -- layman's terms, that means it is going to take 10 X the power you have now in order to be twice as loud.
Doubling the amplifier power input will likely not even be able to be discerned by the human ear in actual practice.
This cabinet series was obviously designed by Peavey to work well *as a system*. AS-IS
I doubt one could improve on it by rewiring it.
--Mac
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