Top Jimi '66 Plexi JT45 Pack for the Kemper Profiling Amplifier
Seeking to Recreate the Sound of: 1966 Marshall Plexi JTM45 (30 Watts)
Speakers Used During the Profiling Process: 1964 Celestion Blue, 1967 Celestion 20W Greenback, 1970 Celestion 25W Greenback
Gain Range (Scale: 0 to 10): 0 to 6
Profile Type: Studio (45 profiles), Merged (42 profiles)
Jim's Comments: "We went all out on this pack, and it's a big one! Only vintage speakers with original Pulsonic cones were paired with a pristine original 1966 JTM45. I'm extremely proud of these profiles. The multiple speakers and amplifier channels make for a wide array of organic, vintage tones from cleans to mild breakup to sweet overdrives. I find them to be very inspiring. They just make me want to sit down and play guitar."
1966 Marshall Plexi JTM45 Info: This 1966 JTM45 is essentially the same as the first Marshalls, which were mostly copies of the 1959 Fender Bassman. The reference amp for these profiles was an all-original (with the exception of a couple biasing resistors) 1966 JTM45 . Differences from the Bassman include a 12AX7 preamp tube instead of a 12AY7, a different feedback circuit, and Celestion speakers in a closed-back cabinet. This 30W amp features (2) KT-66 output tubes and (3) 12AX7 preamp tubes. The amp has Normal and Treble channels, but placing a jumper between the two channel inputs gives the equivalent of a third channel with additional gain.