Boston VR965 Sub Problem

[Buff60Indian]

I recently purchased a pair of VR965’s on Craigslist and the speakers sound amazing but the Left speaker keeps blowing the 3/4amp slow blow fuse . As soon as I put in the fuse and plug it back in I hear a loud hum/distortion sound coming from the sub and the fuse blows out.

So, does anyone know what’s going on and does anyone know where I can buy 3/4amp slow blow fuses in bulk for my testing? They were $3 per fuse online the only place I could find them and nowhere in town sells them, not even radio shack.

Thanks
Corey

 

[R-Carpenter]

Sounds to me like there's a short in the wiring or the amp is on the way out.
Call BA and ask them.

 

[Buff60Indian]

Boston said it was probably an internal short... Bastards! Oh well, I guess I will only have one running with the sub and a separate sub…

 

[koolkat1973]

I have the exact problem but with both of my VR965 speakers. If this is not repairable, does anyone know how to bypass the internal amplifier so that I can wire the woofer directly to the lowpass side of the speaker. My receiver is powerful enough to run the sub inside the VR965. Right now - without any power, the sub gets no signal whatsoever. Even when I set my receiver to send full range signal to the VR965. Please help. Thank you.

 

[TLS Guy]

I have the exact problem but with both of my VR965 speakers. If this is not repairable, does anyone know how to bypass the internal amplifier so that I can wire the woofer directly to the lowpass side of the speaker. My receiver is powerful enough to run the sub inside the VR965. Right now - without any power, the sub gets no signal whatsoever. Even when I set my receiver to send full range signal to the VR965. Please help. Thank you.

That is not possible and dangerous.

Your receiver will see far too low an impedance and likely fail.

The lowered impedance will halve the cut off frequency of your passive low pass filter. Forget the idea.

If you don't want the sub amp repaired, by another plate amps and retro fit it, or mount it externally.

 

[Seth=L]

I would think a completely custom crossover would work as well, but that seems like quite an undertaking.

 

[koolkat1973]

Thanks for the response guy? Do you think getting a low pass filter crossover from partsexpress.com and connecting it inline to the woofer in the speakers will work. It is a 100 Hz Low Pass 8 Ohm Crossover.

I just want to be able to utilize the 6" woofer in the speakers. I will bypass the internal amp all together. What do you think? Thanks.

Kiet

 

[TLS Guy]

Thanks for the response guy? Do you think getting a low pass filter crossover from partsexpress.com and connecting it inline to the woofer in the speakers will work. It is a 100 Hz Low Pass 8 Ohm Crossover.

I just want to be able to utilize the 6" woofer in the speakers. I will bypass the internal amp all together. What do you think? Thanks.

Kiet

What is the impedance of the woofer in the sub?

You would only be able to connect to one channel and Have no way of leveling the sub. Passive crossovers at that frequency work poorly.

It would be much better to buy a plate amp from parts express or buy a new sub.

I get the feeling you are determined to do more damage.

 

[koolkat1973]

What is the impedance of the woofer in the sub?

You would only be able to connect to one channel and Have no way of leveling the sub. Passive crossovers at that frequency work poorly.

It would be much better to buy a plate amp from parts express or buy a new sub.

I get the feeling you are determined to do more damage.

I didn't check the impedance on the woofer. Was just assuming that it was 8ohms since it's home speakers. Anyhow - thanks a million for your help thus far. I'm just trying to see if I could utilize the woofer even though the amp doesn't work anymore. It doesn't look like there's an easy way to do this. I will look at the plate amp you mentioned. Just not sure how I can get it to mount properly inside my speaker. Thanks again for all ur help.

Kiet

 

[TLS Guy]

I didn't check the impedance on the woofer. Was just assuming that it was 8ohms since it's home speakers. Anyhow - thanks a million for your help thus far. I'm just trying to see if I could utilize the woofer even though the amp doesn't work anymore. It doesn't look like there's an easy way to do this. I will look at the plate amp you mentioned. Just not sure how I can get it to mount properly inside my speaker. Thanks again for all ur help.

Kiet

Sub woofers are usually 4 ohms and sometimes 2 ohms, seldom 8 ohms.

You could mount the plate amp externally. Your other option is to get an old vintage receiver on eBay and connect that to the LFE out to drive your sub.

 

[koolkat1973]

Got it. I finally gave in and bought a new powered sub. Thanks for all your help.

Kiet