#1 Rare drivers... talk about luck
Posted: Fri Nov 17, 2017 11:01 pm
My red obs use quite a rare fane driver, I've been on the lookout for a matching pair for my next speaker.
They are vintage fane drivers but with a high spec 20,000 line magnet.
Most vintage fanes come with magnets in the 10 to 17,000 range but i need the bigger magnet so they mate with the beyma tpl150s with very similar efficiency and sound
A few months ago I picked up a single 12" and a 15" (both 8ohm) with the 20,000 line magnets.
Looking at the readily available vintage fanes I have, the baskets and mountings look identical in all types
There are only two types of cone, the hifi/ pa low resonance surround and the pop cone for guitar work
Anyway, the other night I removed the large magnet from the 15" and fitted it to a 12" pa cone/ basket. I was not expecting to be easy but it turned out to be so easy. It took about 10 mins
I then connected it up to the sig gen and gave it a blast.
The pa cone gave 15 db more volume at 30 hz and was louder to 150 hz than the pop cone.
Measuring the speaker about 6" in front of the cone, it was realitivly flat out to 6khz. (I'm only going up to 1500hz with them though )
Quite something.. much better than all of the modern drivers I've been looking at.
Playing music it sounded better than the pop cone.. very very fast.. and a good match for the beyma
That was enough for me to convert the other one, which was just as easy
So I now have a great pair of 15 ohm speakers for my next project. And also few spare baskets/cones and the ability to replace them.. which is a good thing
They are vintage fane drivers but with a high spec 20,000 line magnet.
Most vintage fanes come with magnets in the 10 to 17,000 range but i need the bigger magnet so they mate with the beyma tpl150s with very similar efficiency and sound
A few months ago I picked up a single 12" and a 15" (both 8ohm) with the 20,000 line magnets.
Looking at the readily available vintage fanes I have, the baskets and mountings look identical in all types
There are only two types of cone, the hifi/ pa low resonance surround and the pop cone for guitar work
Anyway, the other night I removed the large magnet from the 15" and fitted it to a 12" pa cone/ basket. I was not expecting to be easy but it turned out to be so easy. It took about 10 mins
I then connected it up to the sig gen and gave it a blast.
The pa cone gave 15 db more volume at 30 hz and was louder to 150 hz than the pop cone.
Measuring the speaker about 6" in front of the cone, it was realitivly flat out to 6khz. (I'm only going up to 1500hz with them though )
Quite something.. much better than all of the modern drivers I've been looking at.
Playing music it sounded better than the pop cone.. very very fast.. and a good match for the beyma
That was enough for me to convert the other one, which was just as easy
So I now have a great pair of 15 ohm speakers for my next project. And also few spare baskets/cones and the ability to replace them.. which is a good thing