I rather liked the pair i heard in 2000, much older drivers and not really a good demo room.
Do you have link to T/S data?
dave
Do you have link to T/S data?
dave
Sorry, unfortunately no T/S data; I'm not aware of any place where German Physiks would have published them. Also, given that a DDD driver moves through four different modes of operation throughout the frequency range, T/S data may be of limited use (see interesting writeup here: https://www.german-physiks.com/technology-ddd-driver-development).
What I do know is that output below 100Hz is limited, so in their speaker designs, for main speakers they start rolling off at around 200 Hz and then integrate with some version of regular drivers and box design depending on how much bass output is required. The exception would be the in the aptly named Unicorn, which is a single DDD driver horn design reaching down to 40 Hz.
What I do know is that output below 100Hz is limited, so in their speaker designs, for main speakers they start rolling off at around 200 Hz and then integrate with some version of regular drivers and box design depending on how much bass output is required. The exception would be the in the aptly named Unicorn, which is a single DDD driver horn design reaching down to 40 Hz.
T/S is only useful for the part that does the bass, and it is really needed to do a proper enclosure.
dave
dave
Certainly, and since German Physiks aren't sharing, building an enclosure for these will require either some trial and error, or an own capability to measure T/S parameters.
I've used 10L boxes for these and achieved what I think is great surround speaker performance, but other implementations would have to find their own way toward success.
I've used 10L boxes for these and achieved what I think is great surround speaker performance, but other implementations would have to find their own way toward success.
These drivers are unusual, the cone doesn't move as in a traditional cone speaker but the signal 'ripples' down from the voice coil to the surround.
It's a bending mode driver, radiating sideways. So T/S is not relevant here.
That also means that the 'cosmetic blemish' is a functional blemish, although effect will be minimal.
Jan
It's a bending mode driver, radiating sideways. So T/S is not relevant here.
That also means that the 'cosmetic blemish' is a functional blemish, although effect will be minimal.
Jan
You're absolutely right; given how they operate technically, it is a functional blemish. Since I haven't been able to detect any impact when measuring the speakers I'm inclined to write it off as cosmetic, but of course, someone with better equipment and skills might be able to pick something up.