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Speaker impedance

11/9/1997 7:43 PM
Speaker impedance
I have a Marshall 2150 combo amp. I converted the amp from 6550s to EL 34s. My question is; How do I match speaker impedance? The amp has a single 12" and I have a matching 4-10 cabinet that I run it in to . The amp speaker is 16 ohm and the cabinet is 8 ohm. Running them in parallel would give me 12 ohms right? But the OT was designed for 6550's. With EL 34's what should I put the impedance selector on? Thanks!
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