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Identify 18" PD driver from Axys B-89
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serioussound View Drop Down
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    Posted: 09 April 2020 at 8:02pm
I have some Axys T86 and B89 cabs here.

I see all the B89 are loaded with some PD drivers. Its says on label its made by PD for Duran audio.

I thought the B89 was loaded with Beyma but obvious thiese are loaded with PD special made for Duran audio.

My experience with "custom made" RCF:s, Beymas and so on that they are in fact not everytime are so very custom more like very close to their of the shelf drivers but with other label or serial number.

So can my PD:s in my B89 actually be some PD 184? Im really no expert on the history of drivers.

Here are some pictures. For me they look similair to the Turbosound LS 1803 drivers.
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All B89 I ever repaired back in the day, had Beyma standard 18GT200 8 Ohm in them, Axys rebatched and painted blue, same color as the cabinets themselves.
The name B89 comes from introduced in 1989. Before they were called differently and had 4 Ohm RCF in them.
PD drivers were used at some point and almost sure they were PD184.

T86 ( Yep, introduced in 1986 ) should have TAD 2001 on JBL 2370 horn.
Midspeakers were 10" RCF, L10/5.. don't remember the type, but they were of the very efficient kind.
As far as I know the T86 stayed about the same over the years they were produced.
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Points: 443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote serioussound Quote  Post ReplyReply Direct Link To This Post Posted: 09 April 2020 at 9:42pm
Ok so you know this system please let me ask you some more questions.

My midtops lacking the tad driver is there any cheap replacement that sounds ok?

Is the PD 184 8 Ohm?

Have b89 built in crossover or if I want to use it with other midtops I need a external crossover?

One other thought I have is to rebuild the b89 subs to use as cheap active 18” subs for partys and so on and just put some rcf arts over them as midtops?

How would you rate the b89 nowdays is it ok compared to newer mid class subs like RCF 705 as?
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Wasn’t the b89 at some point upgraded which was als available as a diy refurb? I can remember loads of drivers and amps for sale at one point. The sources and such systems where getting a bit out of fashion but the upgrade delivered more power and some extra Hz down below. Might be one of them?
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Originally posted by serioussound serioussound wrote:

Ok so you know this system please let me ask you some more questions.

My midtops lacking the tad driver is there any cheap replacement that sounds ok?

Is the PD 184 8 Ohm?

Have b89 built in crossover or if I want to use it with other midtops I need a external crossover?

One other thought I have is to rebuild the b89 subs to use as cheap active 18” subs for partys and so on and just put some rcf arts over them as midtops?

How would you rate the b89 nowdays is it ok compared to newer mid class subs like RCF 705 as?

do you really need to ask? buy cheap sound cheap, buy again.
Never criticise another man until you've walked a mile in his shoes. Once you have, call him what you like, you're a mile away and you've got his shoes!
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Points: 443 		Post Options Post Options   Thanks (0) Thanks(0)   Quote serioussound Quote  Post ReplyReply Direct Link To This Post Posted: 09 April 2020 at 11:39pm
I didnt ask if there is something cheap that sounds like the tad driver.

I meaned to ask if there is something that would sound ok together with the 10” in that cab. ”Ok” for renting to low budget partys and so on.
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For example I have some 2426H laying around...
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The closest in respons and sensitivity I replaced the TAD,s with, were B&C DE-24, later DE-25 which is the exact same driver (just diaphragm mounting is different internally). At the moment it’s DE-250, but DE-25 can still be found at several places. Those drivers are about the only 1 on 1 drop-in drivers, without having to dive in the electronics of the T86.
In the early days I used Radian drivers and they sound great, but needed quite a bit electronical alteration to get there.
Some years back I experimented with Beyma CP-380M ( mainly because a client insisted on using Beyma ), but again I needed to attack the electronics a good bit to get somewhat satisfactory on par with the TAD. The advantage of a cheaper driver was largely undone by the time, work and effort to make it sound as close as possible with the TAD.
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2426H will make noise, but not anywhere near the TAD.
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So you men actually B&C De-250 is an ok drop in?

To bad I have many JBL 2426H and Beyma Cp380m laying around 🙈

There is little info on this system on the web now days thats why I ask here.

Im I right that the whole crossover section is in the midtops? So running the subs alone they have no crossover built in?
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I see and the b&c de 250 would sound much better then JBL 2426H in these?
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Originally posted by serioussound serioussound wrote:

Have b89 built in crossover or if I want to use it with other midtops I need a external crossover?

One other thought I have is to rebuild the b89 subs to use as cheap active 18” subs for partys and so on and just put some rcf arts over them as midtops?

B89 has crossover build in, but it goes up to about 300Hz, so not really sub only.
It’s not difficult to change in the electronics to for example 90Hz, but than you can’t combine it anymore with the T86.
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