What Do We Have Here?
- Thread starter Kasanay
- Start date
I love a mystery. All those bright blue can caps... That seems like a lot of capacitance for a preamp, no?
I had the original powered Large Advent Speakers. I wanted to take the amps out and make acrylic covers for them but someone wanted the speakers and paid for freight to Washington State. Never saw another pair
With regard to your question
Mirko Paneyko (http://www.nytimes.com/1986/11/11/obituaries/mirko-paneyko-head-of-audio-corporation.html)
It says the company, then known as M-P Audio Corp., was founded in 1936 and manufactured custom sound systems.
The 7/11/60 issue of Billboard magazine also lists M-P as a phonograph manufacturer
Kasanay
Active Member
This is a BYOA deal.
There are no amps in the speakers. However, the speakers are very interesting in themselves:
Each box is 16 cubic feet, housing (4) B-199A 12" woofers, (2) B209 Mid-range, (1) cluster of (8) b-200X tweeters, (2) N-103 crosovers, (1) super tweeter and a 3rd crossover for the super.
There are no amps in the speakers. However, the speakers are very interesting in themselves:
Each box is 16 cubic feet, housing (4) B-199A 12" woofers, (2) B209 Mid-range, (1) cluster of (8) b-200X tweeters, (2) N-103 crosovers, (1) super tweeter and a 3rd crossover for the super.
markn2wae
Mark T N2WAE
Sorry for my lame suggestion but...
Maybe you can "find" the missing amplifier by tracing the wires from the speaker themselves?
If the wires from the speakers go to a connector on the back of the cabinet, it's just a "speaker box" with no amps. in it.
There may be a "missing" piece that houses the power amplifiers (this system seems to be built in "sections).
Mark T.
Maybe you can "find" the missing amplifier by tracing the wires from the speaker themselves?
If the wires from the speakers go to a connector on the back of the cabinet, it's just a "speaker box" with no amps. in it.
There may be a "missing" piece that houses the power amplifiers (this system seems to be built in "sections).
Mark T.
zandru
"Hard At Play"
Apparently this system was custom built by MP ENGINEERING CO. with distinctive high quality fabricated power supply & preamp / amp modules,
not to mention the sweet & neat R.T. BOZAK cabinets, Very interesting at that. Very nice, Cheers & Enjoy………………………................................
not to mention the sweet & neat R.T. BOZAK cabinets, Very interesting at that. Very nice, Cheers & Enjoy………………………................................
Kasanay
Active Member
The Bozaks are very sweet & neet in deed!
I plan to enjoy them this weekend by hitching them onto either my converted Fisher 440a console amp or maybe I'll try my $5.00 estate-find SWTP 207/A s.
Then I can pull those preamps & power supplies and start warming them up.
sheltie dave
Addicted Member
Kasanay, where did you get this setup? I had an architect in Westerly RI who had a friend with this identical (as I can remember) combo.
These are a set of lowboy B310A Concert Grands with a pair of aftermarket supertweeters added. I can't remember if the cabs were custom made, or factory.
These are a set of lowboy B310A Concert Grands with a pair of aftermarket supertweeters added. I can't remember if the cabs were custom made, or factory.
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sheltie dave
Addicted Member
That tweeter should be a Foster/Radio Shack supertweeter, IIRC. The gentleman did not care for the original Jensen RP 302s. If the amps are tucked in the speakers, expect a pair of McIntosh MC60s or Acrosounds with little fans behind a mesh.
BTW, since Bozak manufactred these drivers in Dec. 1962, they should be B-200Y tweeters and B209A midranges. You'll need to deal with the dried-out foam dampening rings on the B209As. You have some truly excellent speakers there. Shine a light through the grille cloth - if the tweeters are satin black without silver dustcaps, they're B-200Ys. If the cones are flat black and they have silver dustcaps, they're B-200Xs.
The lowboy Concert Grand was the B-400. I don't think they made a B-400A variant, but these would be a custom interpretation of that design.
It looks like preamps were tethered to the amps with XLR cables. Damned unusual for 1962 home stereo gear.
The lowboy Concert Grand was the B-400. I don't think they made a B-400A variant, but these would be a custom interpretation of that design.
It looks like preamps were tethered to the amps with XLR cables. Damned unusual for 1962 home stereo gear.
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Kasanay
Active Member
I picked these up outside of Detroit, MI. 5 years earlier, they were removed from the original owner's home, located in Grosse Point, MI.
It's interesting to here that there were other installation like this. I have read about similar installations. I think the folks at MP Engineering (or MP Audio Corp.) may have done several of these high-end, custom installs.
I haven't pulled the super tweeter out yet, but I will. There are no amps in the speakers. I don't think there ever were any. I think the amps were in a 2nd console cabinet or possibly in a remote location.
Thanks for the information.
Kasanay
Active Member
Sam, Those "XLR" jacks are may not be connection to the power amp but rather to a remote tone control box.
Thanks, for the great info. I'll be checking those dust caps later today.
Serious overkill for a wired remote!
Kasanay
Active Member
Sam, It turns out the XLR jacks are indeed for the tethered remote control box. Volume, Treble and Bass are all adjustable (and, it work very well).
Kasanay
Active Member
With the help of my brother, I was able strip all the components of of the console, dim-bulb-test each one up line voltage and then started connecting things together.
EVERYTHING WORKS!
Ok, everything also needs work. But, it was very exciting to be able to power these all up. We plugged the preamps into the Fisher 440A console amp that I am converting to a stand-alone and then hooked up the Bozaks. Pretty sweet!
EVERYTHING WORKS!
Ok, everything also needs work. But, it was very exciting to be able to power these all up. We plugged the preamps into the Fisher 440A console amp that I am converting to a stand-alone and then hooked up the Bozaks. Pretty sweet!
zandru
"Hard At Play"
Very nice photo presentation on how things are comming along.................
radioactive
tube gear fanatic
love the crown royal.fwiw its made here in manitoba.also like that setup been following this thread since it was posted enjoy.