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

thedudear

Canada

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.

Nick

Hammond101
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.

thedudear

Canada

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.

Nick

BbendFender
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.

jazzguy

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

KnowledgeSeeker

USA

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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