Acoustique Service Full Range

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hello,

> Rick: I think use the [FONT=Verdana, sans-serif]AM 21 LB 25 ALBC, [/FONT]

I have just contacted de manufacturer this evening fore more spécifications and originals plane.

Before started this project i must finish the actual lol....

There is only the paint for the actual project.

Regards​
 
A very interesting driver, quite expensive though - in that price range there are probably a few Fostex to consider as well.

I'm wondering about the copper plated aluminum voice coil, that's somewhat unusual I think. The other comments about the VC are a bit over the top.. 😀

Also not sure why they are so proud of their basic paper formulation.. The basket design looks nice, and should be good from the standpoint of diffraction off of the supports. The spider looks nice and large. I would guess the pleated surround is fine with an xmax of 2.25mm and probably helps control things going on towards the edge of the cone?

The mid range suck out between 4 - 8kHz concerns me a lot - seems rather excessive both on axis and 30 degrees off, that's going to be audible IMHO..

Depending on box design some sort of BSC, zobel and some correction for that mid range suck out are probably advisable.

What sort of box are you considering? The recommended design probably will not extract the best performance of which this driver is capable.

I'm just finishing up my Half Chili Changs based on the Fostex FE167 and have had to deal with some similar issues, hence my comments.

(I'm still inexperienced so if more experienced members contradict me I would take my comments with a grain of salt.)
 
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eclerj, next time you touch base with these guys could you ask them about the cabinet I referenced earlier, the front/back horn enclosure?

I'd appreciate it and good luck with your project. You should keep us posted as it unfolds, and pictures are always nice. 🙂

Rick
 
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