12-05-2021, 09:15 AM
Give Rich a holler index (soundremedynj.com) It's $45+ the ride.
The main issue is the opt is setup for a 1 1/4 ohm voice coil. When you connect it to a modern 8 ohm spkr it makes the primary of the opt look like roughly 8 times as much. A 3.2 ohm spkr is a better match at only 3X to high. If you rip out the cone and vc and find a narrow 6" spkr you mount inside the original. The fact that you haven't seen one is good. It's suppose to be that way.
It's not unusual for dirty and dust to build up in the gap limiting the movement of the vc. This restricts the frequency response and along with warped or damage cone can turn a once good sounding spkr to bullhorn. Some of the older Philco spkrs have a screw in cone which is easy to remove and clean the the gap. The later ones not so much.
Good Luck
The main issue is the opt is setup for a 1 1/4 ohm voice coil. When you connect it to a modern 8 ohm spkr it makes the primary of the opt look like roughly 8 times as much. A 3.2 ohm spkr is a better match at only 3X to high. If you rip out the cone and vc and find a narrow 6" spkr you mount inside the original. The fact that you haven't seen one is good. It's suppose to be that way.
It's not unusual for dirty and dust to build up in the gap limiting the movement of the vc. This restricts the frequency response and along with warped or damage cone can turn a once good sounding spkr to bullhorn. Some of the older Philco spkrs have a screw in cone which is easy to remove and clean the the gap. The later ones not so much.
Good Luck
When my pals were reading comic books
I was down in the basement in my dad's
workshop. Perusing his Sam's Photofoacts
Vol 1-50 admiring the old set and trying to
figure out what all those squiggly meant.
Circa 1966
Now I think I've got!
Terry
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
