Altec 32343 Network Divider

[Corona Blue]

Wow! Thanks so much for your kind help guys!! I spent this afternoon deriving the schematic. Have a look and see if it looks right to you.



I haven't had time to put a meter on VR1 to verify its value. I suspect it is around 100k. (04/25 UPDATE: VR1 is 7 ohm/50 or 100 watt component) And I don't know the values of the inductors. If anybody knows this stuff, I can update it. Once we know it's right, feel free to add it to the documents lib.

VOTT- yes, that does indeed look like the same HF driver! Sorry about those blurry snaps... batteries in the cam were dying so auto focus was dodgy... I will attempt to get some clearer shots tomorrow... for now... just put yer glasses on! :-)

Let me know and thanks again.

Allen

:thankU:

[Earl K]

Thanks so very much for this Allen !

I'm always very thankfull when someone takes the time to expose the workings of an older network such as this . We all benefit by these efforts / so thanks again !

Does it look right ?

- Yes, electrically your layout is very workable ( when designing for an @ 1500 to 1600hz acoustic crossover point ) .
- The component layout ( visually ) on your drawing is fairly unconventional ( & may confuse untrained eyes ) / but it's the eletrical layout that matters here .

FYI ;

• L1 & L2 could be in the neighbourhood of 1.2 mH for a standard "B2 filter" rolloff ( B2 = 2nd order ButterWorth filter ) .
• L3 ( at that location ) would need to be @ .075 to .20 mH to function properly and do anything of importance to the HF filtering .
• VR1 should be a standard type 8 ohm variable Lpad ( 100 watt ) .
• The values of the capacitors do "ball-park" to where I would expect them ( ie; knowing the components somewhat , as well as Altecs' standard approach to dealing with the FR curves of those components ) .

- It would be nice to have your layout confirmed by a second set of eyes on another network ( before declaring this all correct ) .

<> cheers EarlK

[Corona Blue]

Thanks EarlK-

If anybody would like to modify the schematic, I can email them the source file which was done in TinyCad (shareware/freeware). It would be great to have it laid out so it would be clear to anyone. My thought in the lay-out was to clearly show the two sides of the network, but better is better!

Just PM me or send an email!

Best,

Allen

[Corona Blue]

Here are some clearer pics of the horn and driver... don't know if this will help you identify it or not. Let me know if you need me to do anything to identify these. I'm not all that familiar with what I am looking for on this.













The driver is painted with black wrinkle finish paint. The horn feels like heavy carbon plastic and it mates to the driver with a fiberboard gasket that is about 1.5mm thick.


Let me know what you think and if there's something else I should look at...

Thanks again,

Allen

[RonSSS]

Looks like the 806 style driver. Hard to say exactly what it is until you take it apart and remove the fram. Or look down the throat and see what kind of phase plug is in there. Tangerine would be orange.

Looks like the drivers were subjected to moisture.

I don't think the horns are Altec.

Ron