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help with speakers [message #16738]

Wed, 22 February 2012 09:56

Worlddrum13
Messages: 7
Registered: September 2011

Junior Member

hey all. i have a 1970 k100 and matching jensen 212 cab. i am wondering if anyone has any pictures of their jensen speakers so i can identify mine as being the same. there are no markings or brands on mine anywhere that i can find. they have the big square magnet and the chrome dust cap. i dont have any pictures of mine at the moment but im hoping someone on here does. i just want to verify that mine is original or if they are "after the thought" speakers. any help would be great. thanks!

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Re: help with speakers [message #16739 is a reply to message #16738]

Wed, 22 February 2012 11:16

Kustom_Bart
Messages: 601
Registered: October 2010
Location: Greenville, MichiGUN

Senior Member

If they are Jensens they will have a C12N on them, however with square magnets I would bet they are CTS and they would have a 137 number on them.

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Re: help with speakers [message #16742 is a reply to message #16738]

Wed, 22 February 2012 17:55

stevem
Messages: 4775
Registered: June 2004
Location: NY

Senior Member

The square magnet is the tip off to the CTS, or Eminence made driver.
If you want to see what a original to your cabinet vintage Jensen C12N looks like,with its black and gold lable, check out Jensen speakers listing on the ebay site.

The new Jensen company makes a C12N model again and they sound 96% of a match to my orignal ones from 1968.

The CTS guitar driver is a little lighter in the mids than a Jensen to my ears!

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Re: help with speakers [message #16743 is a reply to message #16739]

Wed, 22 February 2012 21:40

pleat
Messages: 1454
Registered: June 2004
Location: Belding, Mi

Senior Member

Jensen speakers have a 220 code, and the CTS code is 137. The best way to tell what speakers you have it take the back off. Then you know for sure. After 40+ years, no telling what might be in the cabinet. Also if the speakers are original, there should be a Kustom Logo paint stamp on the frames. Regardless of brand, each speaker should be 16 ohm each for a 8 ohm total load.
pleat

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Re: help with speakers [message #16748 is a reply to message #16738]

Sun, 26 February 2012 15:20

Worlddrum13
Messages: 7
Registered: September 2011

Junior Member

Thanks for all the input. I was able to take a look at my speakers. Nothing mentioned above seems to match up with what I have. My speakers are square magnet, silver dust cap. No brand stamped anywhere on it. "121638g" and "67 742" stamped on them.

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Re: help with speakers [message #16749 is a reply to message #16738]

Mon, 27 February 2012 00:04

chicagobill
Messages: 2006
Registered: April 2003

Senior Member

The code number 67 is for Eminence speakers. 742 means that they were made in the 42nd week of probably 1977.

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Re: help with speakers [message #16750 is a reply to message #16738]

Mon, 27 February 2012 09:54

Kustom_Bart
Messages: 601
Registered: October 2010
Location: Greenville, MichiGUN

Senior Member

Those should sound VERY NICE!!!!! I have a set of 4 from 1983 in a Risson 4 x 12 cab from Bob Rissi and beside it weighing a ton, it is the best sounding 4 x 12 cab I have ever owned....even over Vintage 1960 Marshall cabs. They are cheap to buy too. (the speakers).

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Re: help with speakers [message #16751 is a reply to message #16738]

Mon, 27 February 2012 12:51

Worlddrum13
Messages: 7
Registered: September 2011

Junior Member

Did kustom use these speakers or did someone put them in later? They did sound good. I actually swapped them for newer speakers that handle the lows better. I'm using mine as a keyboard amp. It sounds great with the Rhodes. I thought the extended range would be a little much for the "stock" speakers.

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Re: help with speakers [message #16752 is a reply to message #16738]

Tue, 28 February 2012 06:13

stevem
Messages: 4775
Registered: June 2004
Location: NY

Senior Member

Kustom did use the CTS square magnet aluminum dust cover driver as there base line guitar/organ driver in the late 60s.
The next step up was the Jensen drivers, and up from that was the Altec Lansing 12" driver.

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