KEF b139 sp1212 data?

Tomac · 20th December 2007, 07:53 PM

I could get these woofers for a fair price but I don't have their T/S data. I know they are only B139 model which had 4ohm voice coil. Are they anywhere near SP1044? I have T-line enclosures which were built for SP1044 (Hifi answers Cambridge audio R50) but they lack original woofer. I don't mind different impendance of driver as I use active x over anyway. Anyone have some info?
Thanks in advance

Nico Ras · 20th December 2007, 08:13 PM

Quote:

Originally posted by Tomac
I could get these woofers for a fair price but I don't have their T/S data. I know they are only B139 model which had 4ohm voice coil. Are they anywhere near SP1044? I have T-line enclosures which were built for SP1044 (Hifi answers Cambridge audio R50) but they lack original woofer. I don't mind different impendance of driver as I use active x over anyway. Anyone have some info?
Thanks in advance

I have not come across B139 at 4 Ohms, they have probably been made for another manufacturer, but here are the original specs of the B139 if it is any help. Mechanically I cannot see why they should differ, R and Qt & Bl may be affected using diverent voice coil, but this is easy to measure what the resonance is.

Tomac · 21st December 2007, 01:11 PM

Thanks for your effort, but I have the data for sp1044 which you posted. This woofer I inquire about is also known as TS1212, it was made by KEF for their C80 speaker. I cannot measure their T/S as I have to buy them in order to do that. Thanks anyway.

Jonathan Bright · 22nd December 2007, 07:13 AM

Can I suggest you put "hifiloudspeakers" into Google. (Just one word as printed.) It is a site devoted to KEF units. If they can't help then you're in trouble! Like earlier posts I can't recall a 4ohm Kef available as separate DIY unit. True, they were used in some of their complete speaker units i.e. 104 Type II. BTW~Dave at "planet10" seems to know more than most about Kef units. Might be worth an email. No possibility of a photo I suppose?

Edit. I've just put "Kef B139 sp1212" into Google and got a reference to another thread in this site. He too had a C80 and they were 4ohm. A rare unit apparently.

So try the internal search function here and you may get some assitance.
Good luck. Jonathan

20th December 2007, 07:53 PM	#1
Tomac diyAudio Member Join Date: Dec 2003 Location: Zagreb	KEF b139 sp1212 data? I could get these woofers for a fair price but I don't have their T/S data. I know they are only B139 model which had 4ohm voice coil. Are they anywhere near SP1044? I have T-line enclosures which were built for SP1044 (Hifi answers Cambridge audio R50) but they lack original woofer. I don't mind different impendance of driver as I use active x over anyway. Anyone have some info? Thanks in advance

22nd December 2007, 07:13 AM	#4
Jonathan Bright diyAudio Member Join Date: Feb 2004 Location: Queensland	Can I suggest you put "hifiloudspeakers" into Google. (Just one word as printed.) It is a site devoted to KEF units. If they can't help then you're in trouble! Like earlier posts I can't recall a 4ohm Kef available as separate DIY unit. True, they were used in some of their complete speaker units i.e. 104 Type II. BTW~Dave at "planet10" seems to know more than most about Kef units. Might be worth an email. No possibility of a photo I suppose? Edit. I've just put "Kef B139 sp1212" into Google and got a reference to another thread in this site. He too had a C80 and they were 4ohm. A rare unit apparently. So try the internal search function here and you may get some assitance. Good luck. Jonathan __________________ "It was the Spring time of the year when aunt calls to aunt like mastodons across the frozen waste." P.G. Wodehouse.

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21st December 2007, 01:11 PM	#3
Tomac diyAudio Member Join Date: Dec 2003 Location: Zagreb	Thanks for your effort, but I have the data for sp1044 which you posted. This woofer I inquire about is also known as TS1212, it was made by KEF for their C80 speaker. I cannot measure their T/S as I have to buy them in order to do that. Thanks anyway.

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