Your 2 cents on "Cone Cry"

I've got an original 65 DR. Still has the original Oxford speaker that I always thought sounded warm and sweet so I didn't replace it and keep it boxed for safety in case I ever resold the amp.

The amp stays at home and is usually played at low volumes.
Lately when I turn it up a little more I've noticed sort of an overtone that is sort of slightly ringing and slightly harsh sounding.
From what I've heard about "cone cry" I think that's what I'm hearing.
Now that I think about it the amp may have had this sound for the whole 3 and a half years I've owned it. Does this sound like "Cone Cry to you?

Amp has had cap job and all voltages are about where they should be.
I've got a Weber 12F150 coming in a couple of weeks and I'll put the Oxford up to keep safe. If it doesn't fix the overtone problem then I'll know it wasn't the speaker.

Guess I'd just like to feel better while I'm waiting on the speaker, by having others agree that it sounds like "Cone Cry".

Cone cry is a phenomenon that results from using old speakers under 'modern' conditions. Old speakers were designed to be played at nice quiet clean settings (which is what amp makers were trying to achieve in the 50s and early 60s). (By modern, I mean anything from the late 60s onwards)

Hard to say without actually hearing the problem. In general I'd describe cone cry as a kazoo like overtone, it is a repeatable type of sound, and typically occurs when you are driving the speaker hard.

If you are hearing the noise at low or moderate volume it either may not be the speaker, or it may simply be the speaker failing.

Did you order the 12F150 25 Watt, or 50Watt?

Cone cry is quite often a 'tweed' condition because they matched low watt speaker with low watt amps.

What Tubeswell mentioned may also be a point for speaker swappers and clone builders because the cry is a condition where the cone vibrates due to the voice coil being overdriven. I think it's most noticeable when single note lines are played, especially where it only occurs at a few spots on the neck.

You're talking about an original amp and speaker, so who knows, because the speaker certainly wasn't over-rated and it's old/original. Using a higher wattage speaker helps to prevent the voice coil from being overdriven and minimizing speaker related distortions.

It's not a kazoo like sound at all. As i tried to describe before it's an overtone that is not terrible but has a slight harsh ring to it. More noticeable on high single notes I guess.
I'm getting the Weber 12F150 in 50 watts. I know it needs swapping out even if it's not causing the problem.
If that doesn't cure the overtone then I'm not sure where to start looking.

Could be voice coil rubbing, too.

Microphonic tube? If you have any extra preamp tubes do some switching and see if the sound stops.

It's not a microphonic tube.

Of course now that I've got the speaker on order, the overtone seems to have dissappeared. I've played the amp several times and it sounds good as ever.
Oh well, I need to put the original up for safe keeping anyway.

I'm hoping the 12F150 will surprise me and bring even more lush tones out of the amp.