Hi,
we have many some threads about the best selection of a dipol-tweeter with measurements of the polar pattern incl. backside. (for example in this thread: On the directivity of dipole tweeters)
But whats about the MF? The backside radiation pattern of the mids that i have seen do make some hickups and dont make a perfect dipol8 over the complete midrange.
So the goal of this thread is to make a list over some drivers for the midrange (200Hz-4khz). What is the usable frequency range for a good 8-dipol pattern for every driver (Backside and Frontside)?
Probably we can get some nice driver combinations....
Best regards, Tomas
UPDATE 26.01.21:
Driver List in dipol configuration:
2" Visaton FRS5X usable 1,5-4,5 khz
(Frontside Backside Pattern: https://www.diyaudio.com/forums/att...ectivity-dipole-tweeters-frs5x-front-rear-gif)
3" TC9FD18 usable 1,5-2,5khz
(Frontside pattern: https://www.diyaudio.com/forums/atta...olars-0-90-png
Backside pattern:
https://www.diyaudio.com/forums/atta...ars-90-180-png)
4" Audax HM100Z0 usable till 1,5khz
(Frontside Bacside Pattern:
https://www.diyaudio.com/forums/att...9848301-3-ob-hm100z-0-90-180-4ms-124-vert-jpg)
4"Peerless HDS PPB 4-25/08 (HDS-P830870) usable till 1,7 khz
(Frontside Backside pattern:
http://www.diy-hifi-forum.eu/forum/attachment.php?attachmentid=3199&stc=1&d=1298815177)
...
Driver List in dipol configuration without measurements:
Scanspeak 15M/4624G00 used 250-2,5khz from kaameelis
(Akabak simulation MTM: https://www.diyaudio.com/forums/att...woofer-dipol-configuration-15m4624g00_mtm-png)
SB17CAC used till 1,5 or 2khz from CharlieLaub
(In Thread: In Pursuit of the 20-20k dipole)
we have many some threads about the best selection of a dipol-tweeter with measurements of the polar pattern incl. backside. (for example in this thread: On the directivity of dipole tweeters)
But whats about the MF? The backside radiation pattern of the mids that i have seen do make some hickups and dont make a perfect dipol8 over the complete midrange.
So the goal of this thread is to make a list over some drivers for the midrange (200Hz-4khz). What is the usable frequency range for a good 8-dipol pattern for every driver (Backside and Frontside)?
Probably we can get some nice driver combinations....
Best regards, Tomas
UPDATE 26.01.21:
Driver List in dipol configuration:
2" Visaton FRS5X usable 1,5-4,5 khz
(Frontside Backside Pattern: https://www.diyaudio.com/forums/att...ectivity-dipole-tweeters-frs5x-front-rear-gif)
3" TC9FD18 usable 1,5-2,5khz
(Frontside pattern: https://www.diyaudio.com/forums/atta...olars-0-90-png
Backside pattern:
https://www.diyaudio.com/forums/atta...ars-90-180-png)
4" Audax HM100Z0 usable till 1,5khz
(Frontside Bacside Pattern:
https://www.diyaudio.com/forums/att...9848301-3-ob-hm100z-0-90-180-4ms-124-vert-jpg)
4"Peerless HDS PPB 4-25/08 (HDS-P830870) usable till 1,7 khz
(Frontside Backside pattern:
http://www.diy-hifi-forum.eu/forum/attachment.php?attachmentid=3199&stc=1&d=1298815177)
...
Driver List in dipol configuration without measurements:
Scanspeak 15M/4624G00 used 250-2,5khz from kaameelis
(Akabak simulation MTM: https://www.diyaudio.com/forums/att...woofer-dipol-configuration-15m4624g00_mtm-png)
SB17CAC used till 1,5 or 2khz from CharlieLaub
(In Thread: In Pursuit of the 20-20k dipole)
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CharlieLaub recommended the SB17CAC.
Some dipole designs use the zaph za14.
What do you use? Do you have measurements of the backside?
They are sometimes hard to find....
One more:
3" TC9FD18 usable 1,5-2,5khz
(Frontside pattern: https://www.diyaudio.com/forums/att...18-dipole-tweeter-crossed-1kh-polars-0-90-png
Backside pattern:
https://www.diyaudio.com/forums/att...-dipole-tweeter-crossed-1kh-polars-90-180-png)
Some dipole designs use the zaph za14.
What do you use? Do you have measurements of the backside?
They are sometimes hard to find....
One more:
3" TC9FD18 usable 1,5-2,5khz
(Frontside pattern: https://www.diyaudio.com/forums/att...18-dipole-tweeter-crossed-1kh-polars-0-90-png
Backside pattern:
https://www.diyaudio.com/forums/att...-dipole-tweeter-crossed-1kh-polars-90-180-png)
Last edited:
Scanspeak 15M/4624G00 not the best but OK and not expensive. I us 2 of them on triangular baffle, 250-2.5kHz. MTM configuration, connected in series.
One more:
4"Peerless HDS PPB 4-25/08 (HDS-P830870) usable till 1,7 khz
Frontside Backside pattern:
http://www.diy-hifi-forum.eu/forum/attachment.php?attachmentid=3199&stc=1&d=1298815177
4"Peerless HDS PPB 4-25/08 (HDS-P830870) usable till 1,7 khz
Frontside Backside pattern:
http://www.diy-hifi-forum.eu/forum/attachment.php?attachmentid=3199&stc=1&d=1298815177
Is seemt, that we cam use the modst drivers till their cone breakup:
2" till 4khz
3" till 3khz
4" till 2khz
and so on...
But some of them have hickups in the LF. For example the frs5x at 1,5khz. Is it audible?
I took a look on some drivers till 3,5" and their distortion. The following drivers could ve very nice. Do somebody has the frontside or backside radiation pattern of them?
MCM 55-5650 !!!
Fr88EX
Faital Pro 3FE22/25
Dayton RS 75
Hivi B3N
2" till 4khz
3" till 3khz
4" till 2khz
and so on...
But some of them have hickups in the LF. For example the frs5x at 1,5khz. Is it audible?
I took a look on some drivers till 3,5" and their distortion. The following drivers could ve very nice. Do somebody has the frontside or backside radiation pattern of them?
MCM 55-5650 !!!
Fr88EX
Faital Pro 3FE22/25
Dayton RS 75
Hivi B3N
Last edited: