Altec 9170a riaa eq

Here's an oddball part I recently picked up... A 9071A 600 ohm RIAA EQ module.

According to datasheets online, dates to mid 1960s. Matching 9471A line amp had 4x 2n3055s and an autotrans output!

I'd love to find a second one but we all know how that goes...keep me in mind next time you find one!:p

I have been working with LCR phono EQ but we're using 7k networks which are a lot easier to drive and work out to standard cap values.

Anybody ever try these things out?

That critter is definitely old school. That type of stuff predates factory made consoles, if you wanted one you built it yourself. there were numerous similar items.

i have some.

and some 70 cycle high pass .

have yet to try 'em tho ...

Got an extra?? :p