32" woofer???

[eurasian]

I own 4 of these Fostex woofers...actually the predecessors of the current version. Mine are slightly more efficient and have a Qt of .5, which makes them perfect for an infinite baffle. I have also seen them used in giant reflex boxes.

I bought them from an NPR engineer when the fellow decided to go to smaller active studio monitors. He used them 2 per side in huge 100+ cubic foot enclosures. I never heard them in action in his set-up, but he said that with some organ recordings, the dishes in his upstairs kitchen cabinets would walk themselves off the shelves...so these monsters had very low WAF, at least in his application. Mine are built into the wall.

I almost hate to admit it to you guys, but I bought them for his asking price of $1/lb.

David

 

[dnewma04]

Sounds like a nice IB woofer setup. Got pics?

 

[pauldrewry]

line array would be difficult.

 

[soundmotor]

Wasn't that what Marty McFly used in his guitar amp for Back To The Future?

It was indeed!

That was right before Michael J. Fox had his growth spurt.

 

[eurasian]

I don't have any pictures of the installed woofers, but I have 2 that are not being used at the moment if you want pictures of them. They are built in a unique way. They are made of 8 pieces of thick paper that are overlapped and glued together radially. The overlap sections look like stiffening ribs.

One of my "spares" has a fried voice coil -- anyone in AK land have any suggestions as to who might be able to repair one of these? VC diameter is 4".

 

[MAXZ28]

It was indeed!

That was right before Michael J. Fox had his growth spurt.

:lmao: :lmao: :lmao:

 

[Radfordman]

My speaker was not bigger but my wall may be!!!

 

[carolinabirdman]

Electro-voice introduced their Patrician 800 with a 30" woofer in 1958. I worked for a E-V dealer at the time.

 

[Radfordman]

Electro-voice introduced their Patrician 800 with a 30" woofer in 1958. I worked for a E-V dealer at the time.

30" woofer in 1958 Incredible! Suppose the power handling was not that much as amps were not so powerful then. I suppose if it had a light cone, effieciency would be quite good.

What was that speaker used for, cimema?

My friends Dad was Technical Manager for Vitavox and had a hand in the design of the units for the Vitavox Klipshorn, just happen to have user instructions for that here.

 

[toxcrusadr]

I almost hate to admit it to you guys, but I bought them for his asking price of $1/lb.

David

46 lb each according to Madisound. 1) Yikes those are heavy. 2) You got a steal on those.

 

[GordonW]

I don't have any pictures of the installed woofers, but I have 2 that are not being used at the moment if you want pictures of them. They are built in a unique way. They are made of 8 pieces of thick paper that are overlapped and glued together radially. The overlap sections look like stiffening ribs.

One of my "spares" has a fried voice coil -- anyone in AK land have any suggestions as to who might be able to repair one of these? VC diameter is 4".

Well, if you could GET THE SPEAKER TO ME... maybe.

Can't make any promises. But, 4" voice coils are a standard size... so there's lots of options that might be able to be made to fit properly...

Regards,
Gordon.

 

[eurasian]

That one somewhat made up for all of the Mc 275's and 240's, WE 555's and 755's, Marantz 8, 9 and 10B's, etc. I passed on when they were being given away in the early 70's. OTOH, I witnessed what was at that time the most expensive car sale to date ... a flawless Duesenberg SJ dual cowl that went for "only" $215,000. Probably now worth $10M+ if what a piece-o-(fill-in-the-blank) Dodge Daytona brings today is any indication.

 

[eurasian]

Gordon,

I am glad to hear that you would be willing to take a look at the Fostex. I am in Lawrenceville, so getting the speaker to you won't be a big deal.

BTW, was it you I talked to several years ago about replacing the surrounds on my Tannoy Westminsters? If so, I still haven't gotten around to it, so please let me know if this is something you can do.

Thanks,
David

 

[PioneerGuy75]

Richard Clark and MTX teamed up to make a one off 60" woofer that never worked in public appearances, but reportedly worked prior to the accident they were in on the way to the public viewing.

I HEARD that in the OLD Mile High Staduim in Denver, CO had four or six 60" woofers in operation. Never heard them though.:sigh:

Heard this from a guy that worked in Mile High when it was being built.

 

[Bob Orme]

30" woofer in 1958 Incredible! Suppose the power handling was not that much as amps were not so powerful then. I suppose if it had a light cone, effieciency would be quite good.

What was that speaker used for, cimema?

My friends Dad was Technical Manager for Vitavox and had a hand in the design of the units for the Vitavox Klipshorn, just happen to have user instructions for that here.

It's been a good 30 years since I had one of those in my hands, but as I recall, the cone was relatively light, and the drive end of the speaker was just like a standard EVM series 12, 15 or 18 - same size magnet and same diameter voice coil.

 

[Teradacto58]

Hartley had a 32" woofer ...and also Electro-Voice...I believe!

 

[Sir.Byrd]

I make 100" inch woofers for breakfast.

 

[Radfordman]

I make 100" inch woofers for breakfast.

You will suffer later!!!

 

[cfranz]

I think that it is possible, in a sufficiently large room, to build it into a horn. Somewhat smaller... put them face to face in a piston arrangement.

Or, if you are rational, you can ignore them and hope they go away.

 

[tarior]

30" woofer in 1958 Incredible! Suppose the power handling was not that much as amps were not so powerful then. I suppose if it had a light cone, effieciency would be quite good.

What was that speaker used for, cimema?

My friends Dad was Technical Manager for Vitavox and had a hand in the design of the units for the Vitavox Klipshorn, just happen to have user instructions for that here.

IIRC, they were rated for 60 watts and had a paper covered styrofoam cone. I briefly attented a church that had a pair of them in large sealed boxes for the organ. They played very deep indeed, it was more a feel than a sound.