Greetings. I am working on a church PA system that uses two Tannoy v12hp plus a Tannoy 15-inch sub. "v12hp" is different from "v12" and different from "vx12". One of the v12hps seems to have a bad LF driver. Indications are: first, there is an obvious lack of midrange (i.e., between the sub and the tweeter); second, there is no DC continuity at the speaker terminals and a two-way crossover with a good driver should have this. We need to rent a lift to access the speaker. (The DC continuity measurement cited above was taken at an accessible point on the speaker's cable.)
I've got a few ideas on how to fix this. All comments and recommendations are welcome. Maybe someone he3re knows where to get a replacement cone, driver, or entire v12hp?
Alternative 1: replace the LF driver in the Tannoy v12hp, I can't find a replacement driver. This implies replacing the HF as well since it's a dual concentric.
Alternative 2: Recone. I can get a reconing specialist to do the repair. I don't know where to find a recond kit. Would need to rent the lift twice.
Alternative 3: Replace LF and HF drivers in both v12hp cabinets. The Radian 5312 plus Radian crossover has been recommended as a replacement (I'd need two sets to keep the speakers matched). If the low-frequency fbox is wrong and/or the Q comes out wrong for these replacement drivers, I can stuff the box. Since I'm using a sub I hope I can cross over to the sub to avoid any such low-frequency issues.
Alternative 4: Buy a v12hp on the used market and put the working used driver in my Tannoy enclosure for appearance sake.
What damaged the driver? I think it was the old dbx driverack pa and its well-known power-down thump. I've taken out the old driverack and will get a driverack PA2 (any other recommendations?)
thanks,
Tom
I've got a few ideas on how to fix this. All comments and recommendations are welcome. Maybe someone he3re knows where to get a replacement cone, driver, or entire v12hp?
Alternative 1: replace the LF driver in the Tannoy v12hp, I can't find a replacement driver. This implies replacing the HF as well since it's a dual concentric.
Alternative 2: Recone. I can get a reconing specialist to do the repair. I don't know where to find a recond kit. Would need to rent the lift twice.
Alternative 3: Replace LF and HF drivers in both v12hp cabinets. The Radian 5312 plus Radian crossover has been recommended as a replacement (I'd need two sets to keep the speakers matched). If the low-frequency fbox is wrong and/or the Q comes out wrong for these replacement drivers, I can stuff the box. Since I'm using a sub I hope I can cross over to the sub to avoid any such low-frequency issues.
Alternative 4: Buy a v12hp on the used market and put the working used driver in my Tannoy enclosure for appearance sake.
What damaged the driver? I think it was the old dbx driverack pa and its well-known power-down thump. I've taken out the old driverack and will get a driverack PA2 (any other recommendations?)
thanks,
Tom
Contact Tannoy directly for parts, they list a recone part number in the user manual so that should be a possibility. As for what to replace the driverack with, I believe Tannoy has a rack mount processor for these which will have everything built-in, but if you don't go that route Tannoy also lists all the processor setting in the user manual for both passive and bi-amp configs, that will go a long way to getting the best from the speakers as well as provide the best possible driver protection.
Thanks for the reply. It is very difficult to find any information on this topic.
I called a Tannoy service center. They say that they cannot get any Tannoy parts right now. I contacted a tech at a local theater group and he said they have been trying to find a way to repair a v12hp for a year now, and the story has been that this part is just not available. I'll keep watching ebay. I did see that a pair of v12hps on the used marked (not ebay) recently sold, and that 800 pounds was the asking price.
I called a Tannoy service center. They say that they cannot get any Tannoy parts right now. I contacted a tech at a local theater group and he said they have been trying to find a way to repair a v12hp for a year now, and the story has been that this part is just not available. I'll keep watching ebay. I did see that a pair of v12hps on the used marked (not ebay) recently sold, and that 800 pounds was the asking price.
Tom,
Although the dbx driverack pa turnoff noise is shockingly annoying, it probably is not the cause of the failure, never lost a pro driver from it. I've even accidentally subjected my little Tannoy PBM 6.5 studio monitors to the noise many times, they are still working fine.
There is a possibility one of the woofer spade connectors or tinsel lead fell or broke off, or the crossover has a cold or non-existent solder connection.
You could get "lucky" and find one of those easily repairable problems, though still out a lift rental.
Art
Thanks Art!
It would be worth taking the speaker down just to define the problem. Trying to make a plan without knowing the problem is too difficult.
We'll watch for an opportunity to rent a lift.
Tom
It would be worth taking the speaker down just to define the problem. Trying to make a plan without knowing the problem is too difficult.
We'll watch for an opportunity to rent a lift.
Tom