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FDP Forum / Fender Amps: Vintage (before 1985) / 1967 Super Reverb Alnico Speakers



Jun 19th, 2017 04:11 PM   Edit   Profile  

Hello Lads!

My name is Nick, I'm a young musician near Toronto, Ontario. I've got this old 1967 super reverb with the CTS Alnico speakers. The thing sings.

One of the speakers has gone bad, I think its the dust cap that's creating a loud buzzing noise. Maybe it can be fixed.

Would it be safe to disconnect the bad speaker until I find a replacement? My shallow knowledge of electronics says yes, since they speakers are all connected in parallel, removing one from the circuit will only increase impedance and lower power output. But I'd like to check before trying this to avoid damaging the original output transformer.

What would you all recommend for replacement speakers in these amps? I'm looking at the Weber 10a125 to replace all 4 with.

Thanks all! Happy jams.


Contributing Member

So. Cal. USA

Jun 19th, 2017 04:44 PM   Edit   Profile  

You will be fine running the amp with only three speakers. I'd have that speaker repaired. Nothing IMO sounds as good as original CTS alnicos in a Super Reverb except maybe the CTS ceramics of the same era.

Make sure you insulate the wires you remove/disconnect to prevent shorts against a speaker frame or anything else you stuff back there.



Jun 19th, 2017 05:11 PM   Edit   Profile  

Disconnected the bad speaker, and she's back to singing rich clean tones again (: Thanks, Hammond!

If only I had the slightest clue where to have this bad one repaired.


Contributing Member

American Patriot

About as ordinary as you can get.
Jun 19th, 2017 05:53 PM   Edit   Profile  

I think you would be much better off if you can repair the noisy speaker. It it just a loose dust cap, you can carefully glue it back in place. Do this carefully and don't get glue down inside the voice coil.
I have 8 old CTS alnico 10's that I got out of 2 old Kasino amps and I am saving them for later use.


Philly, B-3 Capital

don't dream it be it
Jun 19th, 2017 08:11 PM   Edit   Profile  

Weber does a fine job of reconing



Measure twice. Cut once
Oct 10th, 2017 10:09 AM   Edit   Profile  

as someone said Weber will do it up nicely. Light dope around the cone and you will be set. The CTS alnicos are the "one" for the SR.

FDP Forum / Fender Amps: Vintage (before 1985) / 1967 Super Reverb Alnico Speakers

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