Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12, 2025) x

Thread Closed

Another 70 speaker
#1

I have acquired a 70 chassis and a speaker on the cheap, after this Sep. Kutztown auction when someone who wanted the 70 Tower clock for its mechanism sold me the electronics for 15 bucks.

Now the cone in the speaker has a fairly large hole, and the voice coil was stuck.
Also both transformer and the field coil are shot (transformer obviously has the primary open).

Today I removed the cone.
The voice coil and the spider are good, the cone developed an additional rip as the paper was fairly brittle so when I pressed just a little it just ripped.

I am sure I could repair it, but not sure it is worth it and so maybe a new cone is a better choice. I'd like to keep the voice coil and the spider unless NOS cones come with them.

Obviously the transformer will be replaced as having dealt with 20's speaker before, a new Hammond is less than half of rewinding the transformer.

So,

1. Should I or should I not repair the cone, opting for the new one?
2. What is the best way to repair the field coil, considering it is a 70 speaker and the central post is pressed and not bolted.
3. Should I just send it for re-coning?

Mike.


Messages In This Thread
Another 70 speaker - by morzh - 01-10-2014, 05:37 PM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
54C Complete Teardown/Rebuild
Hello Roy, here is this one sincerely Richardradiorich — 12:45 AM
54C Complete Teardown/Rebuild
Richard, Had grabbed it already but thank you just the same.  I find myself wanting to find some way to block out the...glyphmon — 12:03 AM
54C Complete Teardown/Rebuild
Hello roy, here is a link to the schematic . Sincerely Richardradiorich — 11:54 PM
54C Complete Teardown/Rebuild
Richard, The Silvertone 2014 also is a transformerless set, so I am incorporating a 1:1 600 ohm audio isolation transfo...glyphmon — 11:37 PM
Preliminary work on wife's Silvertone 2014
Did an alignment today which was interesting.  IF alignment went great, almost all was already spot-on.  Adjusting on th...glyphmon — 11:35 PM
54C Complete Teardown/Rebuild
The main problem with adding a Bluetooth input is that this set lacks a traditional power transformer to isolate it from...radiorich — 11:19 PM
54C Cabinet Refinish
I started stripping this cabinet before it got super chilly out because I knew I wasn't going to be able to work on ...glyphmon — 11:18 PM
54C Complete Teardown/Rebuild
While I'm waiting to wrap up the final steps on my wife's Silvertone 2014, I started disassembly on the next project.  O...glyphmon — 11:07 PM
Preliminary work on wife's Silvertone 2014
Hello roy, that great news glad it worked out for you !! Sincerely Richardradiorich — 10:50 PM
Preliminary work on wife's Silvertone 2014
Safety caps arrived today.  Soldered one in and had a successful first power-up.  No magic smoke escaped and it tunes in...glyphmon — 09:53 PM

[-]
Who's Online
There are currently 2292 online users. [Complete List]
» 1 Member(s) | 2291 Guest(s)
Avatar

>