Overview about words largest Subwoofer Drivers/Transducers (SUBWOOFER BEAST)

[lduarte1973]

is that a wood cone ?

 

[tiefbassuebertr]

about Fane "Colossus 24 Bass" and an very large bass from Supravox (made for submarine research) I dont find any informations. Perhaps one of you knows more about this and additional other brands.

In the meantime I have found this:
http://www.hifi-studio.de/hifi-klassiker/Fane/Fane_Lautsprecher/Colossus_24-Bass.pdf
Fane Colossus 24 Qtc=0.707

is that a wood cone ?

I don't know. But it looks like a wood cone.

 

[tiefbassuebertr]

High Resolution Images wanted of world's largest Transducer: Mitsubishi's D160

Who can upload colored high resolution images from this model (Diatone series) ?
I guess, in Japan there are several users of this subwoofer.

In the attached pic only a low resolution version (front view).

 

[cyclecamper]

The Hartley is kind of unique in that instead of a long voice-coil with tons of coil ouside the gap, it used a moving-iron former that caused all the coil to be active against the gap about the same regardless of cone position (in or out) and not requiring a lot of coil length for the motor to remain linear across its displacement. Heavy to have the iron magnetic structure moving, but hey it's only supposed to move slow to make bass!

Those flat square Sony drivers with 5 coil/magnet motors look interesting to me! Glue two such diaphragms together face to face for one driver with the characteristics of an isobaric...well, with 10 motor structures more like a deca-baric but drop the 'isobaric' bull and admit it's a driver design. Wish I could still get some to play with.

 

[tiefbassuebertr]

The Hartley is kind of unique in that instead of a long voice-coil with tons of coil ouside the gap, it used a moving-iron former that caused all the coil to be active against the gap about the same regardless of cone position (in or out) and not requiring a lot of coil length for the motor to remain linear across its displacement. Heavy to have the iron magnetic structure moving, but hey it's only supposed to move slow to make bass!

Those flat square Sony drivers with 5 coil/magnet motors look interesting to me! Glue two such diaphragms together face to face for one driver with the characteristics of an isobaric...well, with 10 motor structures more like a deca-baric but drop the 'isobaric' bull and admit it's a driver design. Wish I could still get some to play with.

Mean you the driver from the attached pics?

Sony SUP-T11 - Audio Voice Acoustics
SONY 2" SUP-T11

 

[Calvin]

Hi,

regarding flat membrane drivers the Technics panels offered more diaphragm area than the Sonys and looked to be more refined.
Unfortunately I´ve never seen or heard one of these panels, since they seemingly never made it to Germany.

jauu
Calvin

pic1: AFP-100
pic2: AFP-1000
pic3: AFP-1000 cut-construction view
pic4: AFP-10

 

[tiefbassuebertr]

The Hartley is kind of unique in that instead of a long voice-coil with tons of coil ouside the gap, it used a moving-iron former that caused all the coil to be active against the gap about the same regardless of cone position (in or out) and not requiring a lot of coil length for the motor to remain linear across its displacement. Heavy to have the iron magnetic structure moving, but hey it's only supposed to move slow to make bass!

Concerning Hartley check out this threads for more informations:
http://www.diyaudio.com/forums/mult...e-european-loudspeaker-drivers-ever-made.html (post #17)
http://www.diyaudio.com/forums/subwoofers/142532-24-hartley-photos.html
http://www.diyaudio.com/forums/multi-way/106532-enclosures-hartley-24-a.html
http://www.diyaudio.com/forums/subwoofers/111572-hartley-18-woofer.html

Hi,
regarding flat membrane drivers the Technics panels offered more diaphragm area than the Sonys and looked to be more refined.
Unfortunately I´ve never seen or heard one of these panels, since they seemingly never made it to Germany. jauu Calvin

Interesting loudspeakers. perhaps a member from Japan can upload additional pictures and papers.

 

[tiefbassuebertr]

..Precision Devices PD2450 - good known, highest quality and best available of all - and together with PD-2150 my own favorite..QUOTE]

b

..... and highest produced quantities so as very inexpensive/cheap compared to exotic devices like ALE, Goto and some other (also my own favorite transducer models together with McCauley; this brand is only inexpensive available in the u.s.).

Who knows the brand and model number of the transducer from the attached photos?

No informations?