Old cabs - new drivers

[Mozza1210]

can any 1 plz help me i own own 2a pair of eminence pro 500 XL serise 2 speakers and cabinets , unfortunetly the main 15inch speker stopt working without any warning i have lernt that the problem is a blown capaciter inside and im finding it near imposable to find replacments cud any 1 help me. they are Philips blue capaciters joined together each 1 has numers on . ! 031k0 / 68u - 63v/ -10/+50%
thanx ppl

 

[Mozza1210]

can any 1 plz help me i own own 2a pair of eminence pro 500 XL serise 2 speakers and cabinets , unfortunetly the main 15inch speker stopt working without any warning i have lernt that the problem is a blown capaciter inside and im finding it near imposable to find replacments cud any 1 help me. they are Philips blue capaciters joined together each 1 has numers on . ! 031k0 / 68u - 63v/ -10/+50%
thanx ppl

 

[Rick Auricchio]

How about leaving the fried ten in there as a passive radiator?

That's probably of little value, and I suspect it would screw up calculations. Its motion allows the active woofer to produce greater displacement, because it acts like a "springy port."

A passive radiator doesn't have a heavy magnet. Probably wouldn't be worth its extra weight.

 

[billfitzmaurice]

Hey, I'd just like to say a big THANKS to you guys.
I have this same BXR Spectrum cabinet and one of the inductors on the circuit board / crossover circuit has fried! I've been trying to find schematic info for so long now and today I got lucky on google with this old thread!

THANK YOU VERY MUCH!!!

I'm actually powering the cab from a Fender BXR Dual 400 head, with the crossover and 2 line outs, so I can run the cab ok from this one head (using the low and high jacks on the back of the cab), but if I ever wanted to try another power amp, I would be wasting half the cab each time (running just the 10's or the 18 on their own.

Here's my problem:

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I have no idea if it's for the low or high pass filter. I just needed to know what part to replace, and Submonkey, you little rippa You listed the part I'm looking for in your post!

I'll try and digest all this info you've all posted and maybe think if there's a more appropriate value part to replace to get a better frequency cut off. The circuit board appears to be in still allright shape so I think I can rewire this ok.

A classic example of how not to build a crossover, inductors of too small a gauge and all electrolytic caps. In a word, cheap. In two words, cheap junk.

I'd follow the advice up in the thread on calculating component values and start from scratch.

 

[5zbass]

I also have a Fender BXR Spectrum. Can somebody help me with the specifications of the 10 inch speakers? They need being replaced.

There's a label on one of them which states:
026739 10332 8Ohm
67-8912 G3


On the other speaker:
026739 10332 6Ohm
67-8750 G3

 

[5zbass]

I also wonder if it's possible to check the impedance of the cabinet via the full range input. I get a nice result when measuring the low and high input, but strange (negative values, changings values) results when measuring the full range input, probably due to the cross-over circuit (capacitors etc.).

 

[drboyd]

I've got one of these cabs, too; I think the crossover on mine is croaked, too. I'll have to drag it home from church next week and take a look inside. What makes this crossover different is the switches on the board that isolate the speakers when you plug into that jack.

If I decide to eliminate the bi-amp capability, just going with a regular crossover - even a prepackaged one - should be pretty straightforward....

 

[drboyd]

I've got one of these cabs, too, and I believe the crossover is croaked. I've either gotta fix this one or scrounge up slash make another....

Sigh!

 

[drboyd]

Courtesy of Jeff K* at Fender, here is the schematic of the crossover in that cab.

*Who is clearly one heck of a fine human being!

 

[5zbass]

Great! Do you also have the specs of the speakers. My 10'' speakers need being replaced.

 

[drboyd]

Not a syllable about the speakers. Sorry!

Great! Do you also have the specs of the speakers. My 10'' speakers need being replaced.