"So what is the native output impedance of the output transformers?"
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Scott 800 PM vs electromagnetic speakers
Started this discussion. Last reply by Daniel Kingloff 5 hours ago. 2 Replies 0 Likes
I have an 800 chassis that I bought some years ago without a speaker or cabinet. I'd like to get it working again but have some confusions about the speakers. I understand that some were PM and…Continue
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"There were two versions of the Model 800B, early and late. The late version had two chokes on the power amplifier and a revised tube layout. Many of the early version were updated to add the additional choke. The early version had…"
Scott 800 PM vs electromagnetic speakers
I have an 800 chassis that I bought some years ago without a speaker or cabinet. I'd like to get it working again but have some confusions about the speakers. I understand that some were PM and some electromagnetic and the ones with PM's have a resistor to add some impedance substitution for the coil in the EM version. Was there an electrical difference in the 2 versions? I'm assuming that the PM version utilized a choke in the power supply. If there was a difference in the electronics, how…See More
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