Repairing blown crossover networks and purchasing 6.5" midrange speaker?

[lectrocrew]

I was using a Kenwood KR-9600 amp with 160 watts per channel output with 2 Cerwin Vega V 12-F speakers and also 2 Radio Shack Optimus speakers. I blew both crossover networks in the Optimus speakers and a 6.5" midrange speaker in one of the Cerwin Vega's.

I since bought a Harman Kardon AVR-45 amp that I'll be using with only 65 watts per channel so my present speakers should survive better, but I need to fix them as cheaply as possible.

Where can I buy the parts to repair these crossover networks (blown resistors circled in yellow)? And I'll need a 6.5" midrange speaker also?

Thanks for any help!
Mike

 

[TLS Guy]

I was using a Kenwood KR-9600 amp with 160 watts per channel output with 2 Cerwin Vega V 12-F speakers and also 2 Radio Shack Optimus speakers. I blew both crossover networks in the Optimus speakers and a 6.5" midrange speaker in one of the Cerwin Vega's.

I since bought a Harman Kardon AVR-45 amp that I'll be using with only 65 watts per channel so my present speakers should survive better, but I need to fix them as cheaply as possible.

Where can I buy the parts to repair these crossover networks (blown resistors circled in yellow)? And I'll need a 6.5" midrange speaker also?

Thanks for any help!
Mike

What you have circled look like fuses to me. You can get them at Radio Shack. Your pictures are out of focus, so I'm not 100% sure, but close. As far as the mid range driver, you need an exact OEM replacement. You can't use any old mid, the speakers will be sound awful is you do that.

 

[lectrocrew]

What you have circled look like fuses to me. You can get them at Radio Shack. Your pictures are out of focus, so I'm not 100% sure, but close. As far as the mid range driver, you need an exact OEM replacement. You can't use any old mid, the speakers will be sound awful is you do that.

I left home early this morning, before I saw your response to this post, so I didn't get you message. So I bought 2- 6.5" 4 ohm drivers that matched the Cerwin Vega specs and they sound just fine. So now I'm jammin' on my Cerwin Vega's !!!

But I also went to Radio Shack, and after viewing these blown crossovers from my Optimus speakers in person, that helpful employee imformed me that these components are capacitors with specs - 50v -15uf, and they only had 50v - 22uf in stock so I bought 4 of them. So I installed the 2 new capacitors (1 on each crossover network and now they drive well in midrange, but I still have a problem with no high frequency output.
I checked resistance between ground and suply feed to the both crossover coils via DVOM and I get '0' ohms resistance and I also get infinite ohms resistance on the resistors on the control switch. If I'm correct, that tells me I have 2 short-to-grouhd coils and 4 blown resistors - but I'm not anywhere near a guru at these crossover networks.

So do you suggest that I need to trash these crossovers and find some replacements somewhere rather than spending the time and effort to try to revive these?

Thanks for the help TLS Guy. I checked out your sound system that you have linked in your signature and I am completely in awe, and jealous as heck!!! lol

Thanks,
Mike

 

[TLS Guy]

I left home early this morning, before I saw your response to this post, so I didn't get you message. So I bought 2- 6.5" 4 ohm drivers that matched the Cerwin Vega specs and they sound just fine. So now I'm jammin' on my Cerwin Vega's !!!

But I also went to Radio Shack, and after viewing these blown crossovers from my Optimus speakers in person, that helpful employee imformed me that these components are capacitors with specs - 50v -15uf, and they only had 50v - 22uf in stock so I bought 4 of them. So I installed the 2 new capacitors (1 on each crossover network and now they drive well in midrange, but I still have a problem with no high frequency output.
I checked resistance between ground and suply feed to the both crossover coils via DVOM and I get '0' ohms resistance and I also get infinite ohms resistance on the resistors on the control switch. If I'm correct, that tells me I have 2 short-to-grouhd coils and 4 blown resistors - but I'm not anywhere near a guru at these crossover networks.

So do you suggest that I need to trash these crossovers and find some replacements somewhere rather than spending the time and effort to try to revive these?

Thanks for the help TLS Guy. I checked out your sound system that you have linked in your signature and I am completely in awe, and jealous as heck!!! lol

Thanks,
Mike

You can get the parts you need of the correct value, from Madisound, or Parts Xpress. Make sure all speakers have the correct DC resistance. Speakers can blow, by open circuit, or the coils can fry, and the turns short so the resistance is lowered.