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Blaupunkt "Chicago" stereo console - info please!

I've been sent a schematic of a slightly later 42953 Blaupunkt chassis - sure enough, it uses an EL84 and an ECL86 as outputs. On that model, the triode side of the ECL86 feeds straight into the balance pot and the treble tone control.

I may have found a source for the 10103 schematic, I sent an email to a site selling one for that number in a "Verona" model.

Update: last night I cleaned some of the massive layer of dirt off of the circuit board. Sure enough, next to the output sockets are markings for an EL84 and ECL86.
 
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I'm Jealous, I restore old travel trailers like Airstream, Curtis wright, Bolus and Kozy Koach, a unit like that would ROCK in one of my Restoration's.
Gott'a love the short wave!!!!!!!
 
I finally heard back from the seller, the "Verona" model with the same chassis number is indeed a tube-type radio. I ordered the schematic, hopefully it's the same design in a different model box.

An interesting discovery - I started taking the speaker baffles apart so I could junk the old, trashed materials. The tweeters (marked LSH 85) looked rather unusual, so I ran them through Google - it turns out they're electrostats, made by Isophon!

http://www.audiocircuit.com/index.php?c=ISA&m=LSH-85

The page for the LSH 75 has more info: http://www.audiocircuit.com/index.php?c=ISA&m=LSH-75

The indicator problem has been fixed - I was able to get the string off of one tensioning pulley, after that I could take each side of the pointer off of the string separately and rotate the pointer on the string.
 
I have a schematic of the New Yorker model from 1961 which was a two chassis model like yours was. It appears that the lone EL84 in the tuner was used in the FM AF amp/cathode follower stage. The amp section would have contained a further 4 EL84s used properly as output tubes - hence stereo.

The tube compliment of the New Yorker's tuner is: ECC85, EF89 (2), ECH81, EABC80 and the EL84. It does not have an EM84 as listed in the old add you linked to.
 
Red, as I discovered during the back-and-forth in this thread, it's a single-chassis model with two SE output tubes - EL84 and ECL86. Once I have the schematic in hand, I intend to wire in RCA outputs so I can use it to drive my 8802 amp. The speakers in the cabinet were connected directly to the tuner/pre/amp unit.

With a bit of luck I can complete the stereo wiring by installing an old tube MPX adapter I have laying around...
 
Skuker said:
Sam,

I have a Blaupunkt Phiiadelphia thats pretty similar. Looks like the tube layout is a little different but mine runs a SE 6BQ5 setup. Yours does look like its stereo. Don't know if the schematic for mine would help you but I could send you it if you think it would help.

Cheers,
Tony

Scan002.jpg
Click to expand...

Based on your picture here, and what I've found on a schematic for yet another Blaupunkt that solidjackson sent my way, I've concluded that the DIN plug is for a tape loop and the weird-looking DIN-sized thing is for the turntable. I have no idea where I might acquire one of those plugs, I'd probably be better off trying to find another female DIN to replace the odd socket. I'll get this thing figured out, somehow...

The Philadelphia has two EL84s, and it seems to have another tube taking the place of the triode side of the ECL86. Maybe a more sensible if less compact layout.
 
Sam Cogley said:
Based on your picture here, and what I've found on a schematic for yet another Blaupunkt that solidjackson sent my way, I've concluded that the DIN plug is for a tape loop and the weird-looking DIN-sized thing is for the turntable. I have no idea where I might acquire one of those plugs, I'd probably be better off trying to find another female DIN to replace the odd socket. I'll get this thing figured out, somehow...

The Philadelphia has two EL84s, and it seems to have another tube taking the place of the triode side of the ECL86. Maybe a more sensible if less compact layout.
Click to expand...

Those din plugs are available in the uk from "Maplin" That plug was standard in Europe for Phono input.
Blaupunkt products are very common in the UK, same chassis - different cabinates, it seems us brits wanted a combined "radiogram" cocktail cabinate. (we drink a lot!).
The elecrostactic tweeters were common in the better hifi units in the 60s in Europe.
 
I haven't had any luck finding that weird DIN phono connector on their site. I wonder if there is a US source for them - if I have to pay $20 to ship a $5 connector, I might as well just replace the weird socket with a regular 5-pin DIN socket.

The good news is that the 2-pin DIN speaker plugs seem to be readily available over here.
 
Most of that ugly wiring is where I cut the speaker, antenna and power cords to get the head out of the cabinet. The pieces are still hanging there.
 
I have a thread in the "Digital Docs" forum looking for the schematic. I know it exists in the Sam's folders, their webpage has it available, though the $15 shipping is insane.
 
The matter of the STEREO markings on the buttons: Since the tuner itself isn't stereo (unless of the type where one channel on FM, one on AM), maybe it has something to do with switching the phono input between stereo and mono?

Or - another thought - maybe it was meant to take an outboard FM MPX decoder, linked through one of those unknown sockets on the back? Pushing the two buttons would retrieve audio from that socket instead of the internal discriminator.

That plug you are looking for ISN'T a DIN plug. It's similar, but not compatible. Right now the name of them escapes me, I have not seen them sold anywhere except occasional NOS.

I have a few 60's tuners that go high frequency on the left, low on the right.

It's very pretty - would look great if tidied up and put in a handsome cabinet!
 
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