Cab 1:

12" --> L'acoustics HP BC122 (looks a lot like the 12TBX100) 

8"   --> No idea atm, no brand on it (needs a new dustcap)

1"   --> BMS 4548-16 (OEM)

Cab 2":

12" --> RCF L12P110K (is covered in dust and remains of the old damping foam?)

8"   --> same as cab 1 but condition is fine

1"   --> BMS 4548Plus-8 (OEM)

Current crossover frequencies are 600 Hz and 2000 Hz.

The cab has a filter between the 8" mid and 1" HF driver, the original filter is build for 16 Ohm nominal drivers. If the LA driver is a bit like the 12TBX100 the difference with the RCF is pretty big specifications wise. One BMS HF is 8 Ohm. 

First thing done, clean the inside of both cabs:

Current to do list:

-Check filters completely and draw up schematic

-Repair 8" driver and find out if it is the original one (or find spec sheet)

-Try o clean the RCF 12" although it looks almost impossile, it's a really sticky substance.

-Find two identical 12" drivers for low/mid section (I was thinking about something like the B&C 12MH32).

-Find two replacements for the BMS HF's

To be clear, the projects objective is not to make an amazing sounding cab, the recources and time aren't just there atm.

Both filters have been checked and the components are ok. The only thing I have to do is measure the inductance of each inductor.

New dustcap is ordered and the RCF is drying up a bit. It is still a bit wet and really sticky.

It is to that sticky anymore, but I doubt that I can get it off without the use of any fluids.

The 12" section should cover +-100Hz till 600Hz, large Xmax isn't necessar (it looks a lot like the 12TBX).

Maybe tomorrow I have some time to do some testing with the driver.

If you have the time, let me know.

Thanks for the offer!

Pressed chassis, further only a serialnumber on the driver:

CAMP . . 628601300052679

I did some searching, however Ciare has some models who look like it, none of them match really.

Then I searched at Sica 8" and I found a model where the chassis and magnet look identical. I only can't find a picture were the cone is 100% visible.

Regarding the RCF, I think that would be really hard, I would need to cover the whole edge and the tears are right against the suspension. Repairing that would probably change the suspension characteristics quite a bit not?

Turned everything upside down, but I have only a couple BC122 recone kits.

As for the RCF, this seems very repairable indeed, I have repaired far worse than that.

Don't worry about changing parameters, in this application the speaker wont be moving that much anyway and the impact on sound/SPL/etc. will be barely measurable, let alone you could hear it.

The difference between the B&C and the RCF is far greater than what you can accomplish with any repair of that kind.

I searched about repairing something like that, but couldn't find a good example/instructions.

Also I am not sure what jay cloth would be in Dutch 

If Cravings photo doesn't help, its basically very light fabric cloth sold as a general purpose kitchen cloth - you'll likely have something similar enough in any supermarket.

Cheers,

David.

One RCF and the LA driver will be sold.

Regarding the 8" driver, I have send Ciare an email about the driver with some pics and magnet dimensions, hopefully they can help me out. 

If they will suffice I'll keep them for the cab, otherwise I'll exchange them with something different like the B&C 8PE21.

Filters are checked and one has some minor work to it. I drew up the schematic and have simulated the circuit in LTspice. 

Does anyone have experience with the BMS 4548-16 OEM driver? I can't find that much about it, and would like to know if they are up to the job SPL/sound wise. For example a driver like the DE250 isn't that expensive for me.

Power: 150 Watt

Max Power: 300 Watt

Re: 9,20 Ohm

Fs: 114 Hz

Cms: 0,00008975 m/N

Mms: 21,7 g

Le: 0,75 mH

Qms: 1,15

Qes: 0,40

Qts: 0,30

Vas: 5,76

BL: 18,94

u0: 2,05 %

Xmax: 0 mm

Sd: 214 cm2

When interpreting the specs it looks like a good candidate for the cab.

Testing will be done in the coming weeks.

-Make it as clean as possible for the glue

-Make several strips to patch it up

-Apply glue and the strips (on the back)

-Have patience

-Test

The only thing I am not sure about is how to apply the glue.

I also could apply some glue on the strips and then put them on the surround/cone.

Apart from the applications (paper and other light materials) there is no more info on the container regarding it's composition.

I patched it up on four areas, looks good enough so far. 

After christmas some testing/measuring is scheduled.

Hi

Your reparation looks as it should. But a word of caution, if the patches glued are not on symmetrical pattern around the outer edge, there is a possibility of voice coil rubbing against pole pieces when cone excursion is high, as the patched part maybe now flexing in different manner compared to original outer suspension.

Same applies to repairing light or thin cones. If there is hole poked on one side, just apply same kind of patch on the opposite side to keep mass symmetrical around the voice coil and suspension.

In this case as it is a low mid driver, maybe not so much.

It had to be repaired at two areas, both being on one half I did apply the same on the other side.

So now it is patched at four points (symmetrically and all backside). I don't expect to need much Xmax but it minor work to do it somewhat properly. 

I'll keep you informed the coming weeks