Unknown Altec XO - theatre one?

**magnarc** · July 25th, 2011, 09:11 AM

Altec Vintage 2 way Speaker / Horn Crossover Network | eBay

Never seen one of these before, not even sure if it really is an Altec one.
Must be something as there is significant bidding activity on it.

Anyone ID it?

**gearfreak** · July 25th, 2011, 10:53 AM

Font and faceplate are similar enough to old N-500C, N-500F, etc. that they look to be Altec to me, but no idea on the model.

Dual LF connections may be a clue?

**Steve Schell** · July 25th, 2011, 12:19 PM

Interesting units. From the hammertone paint I'd guess they were made in the 1950s, most likely by Altec Lansing due to the "Test OK" stickers that were common to their products. As they lack the Altec name they were likely supplied to another company such as IPC or DeVry.

**Altec Best** · July 25th, 2011, 02:49 PM

+1 Definitely Manufactured by Altec Lansing. Looks like a crossover that would be mounted in a 210 Vott cabinet (dual woofer 500 Hz XO,single or dual HF units )