What is the se input impedance of the Long bodied MA 1s

Searches show, posted on February 26, 2015 at 16:51:27
Penguin Audiophile Posts: 7116 Location: Delaware Joined: August 5, 2001	100K se and 200K balanced...is that a safe assumption? I need to set the filters for a pair of Vandersteen 2wq woofers, and they use the input impedance for the RC filter. dee ;-D True terror is to wake up one morning and discover that your high school class is running the country. quote by Kurt Vonnegut

RE: Searches show, posted on February 27, 2015 at 07:02:50
Lew Audiophile Posts: 10912 Location: Bethesda, Maryland Joined: December 11, 2000	That's kind of been the standard for Ralph's amplifiers. Sorry for the delay; I was going to respond yesterday and got distracted. Also, only Ralph will know for sure, but it's a fair assumption that 100K with SE input and 200K with balanced input is correct.

Nearly all our amps are set up that way, posted on February 27, 2015 at 08:23:36
Ralph Manufacturer Posts: 4778 Location: Minnesota Joined: April 24, 2002	The MA-2 and MA-3 have input termination that can be set to 600 ohms by a switch. Some of the very early (1970s and 1980s) amplifiers had 500K input impedances.

OTL Asylum