Can you help identify these Crossovers?

[jpg]

A friend recently acquired some Crossovers with some Altec VOT speakers. I haven't been able to find any information on the Xovers, and I haven't seen the speakers yet. I'm hoping someone here can share some info on them.

There's no model number on the Xover enclosures. Inside each cabinet, there are two passive Xover units, they both read 9025A, 600Hz/600Hz. There are two mono op-amp modules, the amps are marked 2520 & were made by Automated Processes, Inc.

The back panel has twelve 8-pin tube sockets and 12 sets of 3 solder turrets. 1-4 are A inputs, 5-8 are B inputs, 9&10 are A-HI & A-LOW, 11&12 are B-HI & B-LOW. Sockets 4 & 8 have a Peerless 15335 bridging module. The last 4 sockets each have a plug with one resistor & 2 jumpers. Turrets at 9-12 have 2 resistors & cables with both RCA & phono connectors.

Has anybody seen these before? Were they made by or for Altec? Thanks!

<img src=http://myweb.cableone.net/jpg/AltecXovers.jpg>

[bfish]

It's a custom, modular, line level, 2 channel XO, probably assembled by an Altec contractor for an install. The 9025s are the actual XO modules, for line level 600 ohm apps (not speaker level). The 9025-1s were for 500Hz, the -2s for 800. The rest is just a patch bay with a couple of 600 ohm line amps and a couple of matching xfmrs. Not much use unless you need to biamp from a low Z line input.

[jpg]

That makes sense, thanks for clearing things up. The 9025A modules read "TYPE___" with nothing stamped in the blank area, so they could be 500 or 800. I have several others I can look at, maybe one will be stamped. Thanks again!