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.

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.

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.

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.

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

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.

DE-250/25/24 are very ok drop ins.

DE-500 too, but there’s no need to use a more beefy driver than DE-250/25/24.

There’s indeed little info on the web. Back in those days everything was on paper only and these systems were not so widespread in use outside Holland and Belgium. I have my info from the original designers/manufacturers with whom I worked close with right after the split to Duran/Axys and Soundprojects/Master Blaster. Lots of paperwork/info got “lost” during that time ( it wasn’t an amicabel split to say the least...). All this is another story for another time maybe, but I’m mentioning it now, because it has to do with all alterations that exist of that Source Set (B89/T86) you have and also a number of other types that existed back than and were in some form or another produced and marketed different by both companies for some time just before, during and after that troubled split.

Depending on manufacturing date of your cabs, you can have products of either company and that means also possibly different electronics. Not entirely different, but things like crossover sits in what cab to name one thing. I kinda forgot about it, because Soundprojects always had all dedicated crossover/processing in each cab and xlr in/out was simple hardwired, but your question jolted my memory back. Full Axys versions had indeed possibilities to couple thing around in a few ways and there was something like one xlr input and two or three xlr outputs. One hardwired in to out, another with low out or something. There was also this thing with symmetrical and electronically buffered asymmetrical outs, that was a pain sometimes to get buzz free. The notorious DO-3 power connectors were also part of that problem by the way. So you might be right that your set has crossover for the B89 in the T86 only and nothing crossover sits in the B89. The 300Hz crosspoint is the only certain thing than ;-).

The B89 is having an internal crossover section , T86 also. This is all integrated at the inputcard. 

Very first Master Blaster set were the Impact (sub) and Supercompact (top) models with RCF L18/851 at sub. Later on, when the name was already changed to AXYS the subs B89 were loaded with 18GT200DA (almost same as standard Beyma 18GT200) Many older subs were modified then from RCF to Beyma, more output and lower frequency. At many cabinets, serviced or updated by Duran Audio, the Master Blaster frontpanels were also changed for an AXYS frontpanel. 

Later on they were equiped with 18PD184, again an improvement.

Mids in the T86 model were always RCF L10/581 (special coated) and TAD2001 high driver.