Cross-over schematics for the 4660

[4313B]

Ok

[Jan Daugaard]

Hi Giskard,

thanks very much for the schematic -- 4660A_Page_1.jpg contains just what I was looking for.

It appears that L3 has a switch with 5 positions. Do they represent 5 choices of induction between 0 mH and 3.3 mH?

And what does NC stand for?

[4313B]

It's a tapped autotransformer. You'd have to measure the taps if they aren't specified in the schematic.

No Connection.

[Zilch]

It's an odd note about the 2426 impedance. Looks like they switched to the 16-Ohm "J" in the "A" version, and advised swapping out diaphragms in the originals when required....

Ooops!

[spkrman57]

Seems like they would both work unless I am missing the boat on this one.

Not like I haven't been wrong before!!!!

Ron

[spkrman57]

Will using a 8 ohm or 16 ohm 2426 make a noticable difference with the 4660 crossover schematic!

If nothing nothing else, the HF horn output would be off a few db!

Hoping someone will chime in here!

Giskard would be able to answer this question, someone talk him out of retirement.

Ron

[johnaec]

Will using a 8 ohm or 16 ohm 2426 make a noticable difference with the 4660 crossover schematic!

'Seems to me the 16 ohm version would be about 3db down from the 8 ohm version, but I'm not sure that exactly applies in this case. 'Curious how they use the same crossover in both versions. I wonder if they went to the 16 ohm to better match the level between the two different LF speakers?

John