Electro Voice SP8B vs. SP8C

[tiefbassuebertr]

The short form data of SP8C/SP12C/SP15A are here
https://products.electrovoice.com/binary/SP8C, 12C, 15A EDS.pdf
Unfortunately there are no datasheet of the SP8B online.
Maybe the SP8B use an ANiCo magnet drive unit.

Here are some images online
Building with E-V SP8B
EV SP8B Electro-Voice Vintage Speaker 8" Full Range Whizzer Alnico OHIO | #287161236
retro vintage modern hi-fi: ElectroVoice Popular Electronics Ad October 1955 | Vintage speakers, Speaker plans, Hifi
1961 Ampex Branded 8" 16ohm Electro-Voice SP8B from 8202 Signature Console Photo #2368348 - Canuck Audio Mart
(ampex branded version without whizzer cone)
https://www.canuckaudiomart.com/details/649141966-electro-voice-sp8b/images/798821/

Thank you for upload a datasheet of the predecessor of SP8C and calling some commercial spraker box models equipped with this transducers.

 

[GM]

You're welcome? Yes, they are AlNiCo.

Not sure there was any published data sheets in the early days, so can only list some old catalogs with a little description: http://www.hifilit.com/Electro-Voice/116-4.jpg

 

[timbercore]

Here is the (mostly intact) data sheet pulled from an estate SP8B.

 

[timbercore]

Here is the (mostly intact) data sheet pulled from an estate SP8B.


View attachment 1111550

 

[tiefbassuebertr]

Thank you for this images. I have yet found this URL:
http://www.hifilit.com/Electro-Voice/Electro-Voice.htm
according various offers of vintage speakers I note, that there are different versions - go to the attached images:

 

[tiefbassuebertr]

Images of commercial EV box model "Baronet" both with SP8B and SP8C
check also this URL's
https://www.itishifi.com/archives//2010/01/electro-voice-and-licensing-from.html
https://www.hifido.co.jp/sold/19-25...M=0&LNG=E&OD=0&O=26350&L=50&SD1=0&SD2=0&SD3=0

 

[tiefbassuebertr]

Electro Voice "The Coronet" SP8B+T35

 

[tiefbassuebertr]

Electro Voice "The Coronet" - unknown drivers - predecessor or successor of SP8B+T35 ?

 

[tiefbassuebertr]

Electro Voice Kit "The Coronet" Instruction Manual

 

[GM]

http://www.realoldiesradio.com/docs/EV/How_to-build_a-EV-spkr_system.pdf