The Lost Marshall 50RCD:

So, nothing wrong with the 21 year old (50 watt 8 ohm x 12") speaker, but I was considering changing it out.

Thoughts???

Screenshot_20210722-085850_Chrome.jpg
 
I guess the question is: what is the existing speaker not giving you that you expect from another speaker?
I say if it sounds pretty good for what it is leave it alone.
Let your students use it or rent it?

It actually sounds good and I've started using it for instruction, but I thought maybe a good idea to change out the paper speaker from an age standpoint???
 
If it has collector value maybe? Or run it till it gives up the ghost - maybe that Link Wray or Ray Davies torn speaker cone crunch tone?


I just read a work email that starts "We are looking for speakers....", and I first thought well, guitar amp speakers!
But they are just looking for someone to speak, so..... lol.
 
If it has collector value maybe? Or run it till it gives up the ghost - maybe that Link Wray or Ray Davies torn speaker cone crunch tone?


I just read a work email that starts "We are looking for speakers....", and I first thought well, guitar amp speakers!
But they are just looking for someone to speak, so..... lol.

No value here, but such a light, useful and portable amp.
 
It actually sounds good and I've started using it for instruction, but I thought maybe a good idea to change out the paper speaker from an age standpoint???

Honestly, unless a speaker cone has been subject to abuse or harsh environmental conditions, I wouldn’t sweat it. However, if a close inspection of the cone and the surround reveals any size of tearing, weakness, or loss off adhesion, then a replacement is in order.
 
Its been abused over the years for certain, but It looks good...

If you want to get a speaker for a hot spare, that wouldn’t be a bad idea.

But, I’ve actually temporarily repaired torn speaker cones by gluing a patch cut from a coffee filter over the tear.

If the surround comes separated, sometimes a little contact cement will hold it in place until you can replace the speaker.
 
If you want to get a speaker for a hot spare, that wouldn’t be a bad idea.

But, I’ve actually temporarily repaired torn speaker cones by gluing a patch cut from a coffee filter over the tear.

If the surround comes separated, sometimes a little contact cement will hold it in place until you can replace the speaker.

This thing sat in my studio and/or at my Mom's studio for over 20 years, being played by everyone. Still looks new and still works good.
 
Even if the speaker eventually would go, you'll only suffer the downtime from replacing the speaker.

It's one of those amps where the power stage is a HiFi integrated circuit amplifier. Looks like the LM3886 in this case. Running it without load will do absolutely nothing to it. And looks like it also has overcurrent protection if the speaker would somehow fail into a dead short... So it's very unlikely that you'd somehow damage the amp otherwise if the speaker goes.
 
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