What kind of speaker is this?

Freebird · Post by **Freebird** » Mon Feb 05, 2007 5:51 am

15 years ago I found an old Jennings non-tube combo amp with two grey speakers. Because they had an interesting sound I kept them. Know I'm excited to know what type of speaker they are? So I would be very happy if some skilled guys here could help me with identifying this.

On the pictures you maybe see some details. Here my question

a) Who is the manufacturer? Celestions?
b) What type is it?
c) Which magnet? Alnico or Ceramic?
d) What wattage do they have? 20, 25 or 30W?
e) What does T1096 - EC11W mean?
f) Are they called Silver Bells?

Thanks in advance!
Daniel

Post by **Scumback Speakers** » Mon Feb 05, 2007 8:55 am

Freebird wrote: On the pictures you maybe see some details. Here my question

a) Who is the manufacturer? Celestions?
YES.
b) What type is it?
ALNICO 12" SPEAKER.
c) Which magnet? Alnico or Ceramic?
d) What wattage do they have? 20, 25 or 30W?
25
e) What does T1096 - EC11W mean?
T1096 indicated the speaker model, EC11W is the date code, May 11, 1970.
f) Are they called Silver Bells?
YES

Thanks in advance!

YOU'RE WELCOME.

Daniel

Freebird · Post by **Freebird** » Mon Feb 05, 2007 10:01 am

! Thanks a lot man of Southbay Ampworks!

Really - are they Silver Bells?! I can't believe it. If so, then I am a lucky guy, who kept them away from throwing to garbage. I'll try those with my JTM45 and see/hear whether I like it or not.

Daniel

Post by **Scumback Speakers** » Mon Feb 05, 2007 10:09 am

Freebird wrote: ! Thanks a lot man of Southbay Ampworks!

Really - are they Silver Bells?! I can't believe it. If so, then I am a lucky guy, who kept them away from throwing to garbage. I'll try those with my JTM45 and see/hear whether I like it or not.

Daniel

You better be careful with that test. While these speakers were rated at 25 watts, a healthy JTM 45 will put out 35 watts clean, and around 50 plus if dimed.

I'd be very careful if I were you.

Freebird · Post by **Freebird** » Mon Feb 05, 2007 10:18 am

Southbay Ampworks wrote:You better be careful with that test. While these speakers were rated at 25 watts, a healthy JTM 45 will put out 35 watts clean, and around 50 plus if dimed.

I'd be very careful if I were you.

Yep, that's a point what I am worried about. Thanks for your warning. Is there a solution to run them unproblematic with a JTM45? For example with series resistances or so?

Daniel

Post by **Scumback Speakers** » Mon Feb 05, 2007 10:45 am

For safety I'd run them parallel at 8 ohms, and not turn the amp above 5-6.

908ssp · Post by **908ssp** » Mon Feb 05, 2007 12:05 pm

You could also use your attenuator one click is about half power or add a parallel load resistor to the second speaker jack that too will result in half power. Neither method results in significant tone change.

Really cool speaker let me know if you want to sell them.

Freebird · Post by **Freebird** » Mon Feb 05, 2007 12:52 pm

Southbay Ampworks wrote:For safety I'd run them parallel at 8 ohms, and not turn the amp above 5-6.

Yes thanks. I will run them parallel.

908ssp wrote:You could also use your attenuator one click is about half power or add a parallel load resistor to the second speaker jack that too will result in half power. Neither method results in significant tone change. Wink

Do you mean, by running them parallel, then using an additional 8Ohm resistor, which is connected to second speaker jack? If so, do I need to select 4Ohm or 8Ohm at the amp?

908ssp wrote:Really cool speaker let me know if you want to sell them. Wink

Thanks man. Maybe after I don't like their sound.

Daniel

908ssp · Post by **908ssp** » Mon Feb 05, 2007 11:29 pm

Do you mean, by running them parallel, then using an additional 8Ohm resistor, which is connected to second speaker jack? If so, do I need to select 4Ohm or 8Ohm at the amp?

Yes exactly a cheap and safe way to cut your power in half. I have even wired a resistor directly to the speaker terminals when there is no second speaker jack. Just treat them like another speaker. You could also wire one 8 ohm resistor in series with each speaker for a total load of 8 ohms. You can get 25 or 50 watt load resistors from Weber.

You can also use one or two 10 ohm resistors and treat them just like 8 ohm resistors it isn't off by enough to matter. The resistors are only a couple bucks.

Freebird · Post by **Freebird** » Tue Feb 06, 2007 8:16 am

908ssp wrote:Yes exactly a cheap and safe way to cut your power in half. I have even wired a resistor directly to the speaker terminals when there is no second speaker jack. Just treat them like another speaker. You could also wire one 8 ohm resistor in series with each speaker for a total load of 8 ohms. You can get 25 or 50 watt load resistors from Weber.

Thanks 908ssp. I'll give it a try. Hopely the speaker will survive it

.

Freebird · Post by **Freebird** » Sat Jun 24, 2017 12:14 pm

Hi forum members

I do still have them stored unused from an old Jennings non-tube combo amp. So I want to sell them to whom who can use them.

They are two in a very good state. Further specifications:
- Celestion alnico 12" speaker
- 25 Watt / 15 Ohm
- Frame no: T1096 - EC11W (11. May 1970)
- Cone no: 16 102 003
- pictures: https://www.dropbox.com/sh/ieax3f5jtyin ... ZlV-a?dl=0

If anybody is interested in them so p.m. me and ask for a price.

Daniel

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