I have been interested in AT's woofers, but from a customer's point of view they are very sparse about product details.
Regarding the 12D772510 KAP: Has anyone measured these? My questions are how high do they extend, at what frequency do they break up, and at what is their directionality like?
What advantage might be realized by the optional larger 220mm x 25mm F-size magnet?
The concept at this stage is, to pair a woofer with the Bliesma 74B-6 and RAAL 140-15DAM in 100L, possibly 20-25Hz tuning, mostly lower listening levels under 80dB at 3-4m distance. The crossover point for this woofer and the midrange may be around 500Hz or higher, and that depends as much on the woofer as the midrange.
Regarding the 12D772510 KAP: Has anyone measured these? My questions are how high do they extend, at what frequency do they break up, and at what is their directionality like?
What advantage might be realized by the optional larger 220mm x 25mm F-size magnet?
The concept at this stage is, to pair a woofer with the Bliesma 74B-6 and RAAL 140-15DAM in 100L, possibly 20-25Hz tuning, mostly lower listening levels under 80dB at 3-4m distance. The crossover point for this woofer and the midrange may be around 500Hz or higher, and that depends as much on the woofer as the midrange.
They used to have response graphs etc on they're site for some models, not sure i ever saw that specific one.
Can dig them up through the wayback machine, as below:
https://web.archive.org/web/20210505220521/http://www.audiotechnology.dk/iz.asp?id=4|a|127|||
Here is a old graph in a 70 L enclosure, tuned around 28hz.
They do have Mineral filled Poly cones, or sandwich cones, different magnet size choices, alu or alu/kapton formers etc, unless you buy the off the shelf standard models.
With that kind of customisation the lack of measurements are more to be expected then some other small mfgs, that claim they make the best products in the world, have a small standardized product selection, and will not publish measurements at all🙂
Can dig them up through the wayback machine, as below:
https://web.archive.org/web/20210505220521/http://www.audiotechnology.dk/iz.asp?id=4|a|127|||
Here is a old graph in a 70 L enclosure, tuned around 28hz.
They do have Mineral filled Poly cones, or sandwich cones, different magnet size choices, alu or alu/kapton formers etc, unless you buy the off the shelf standard models.
With that kind of customisation the lack of measurements are more to be expected then some other small mfgs, that claim they make the best products in the world, have a small standardized product selection, and will not publish measurements at all🙂
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Thank you very much for taking a look. It appeared to have been a decent behaved driver to integrate into a multi-way system.
I have occasionally read anecdotal accounts of the drivers’ sound, usually regarded as “Skaaning” drivers, but haven’t found many posts within the DIY community from people that have used them.