EQ Archive

This is the wiring diagram for the original TBT 2-Band EQ preamp.

An old XTCT wiring diagram from the 1980’s

An old TCT wiring diagram from the 1980’s

XTCT wiring diagram from the 1990’s

TCT wiring diagram from the 1990’s

Wiring Diagram for the old 2-module NTMB-918FL with NTMB3. These modules have been merged into NTMB+FL.

Wiring Diagram for the old 2-module NTMB-918F with NTMB3F. These modules have been merged into NTMB+F.

An old version of the NTBT-918 Wiring Diagram

NS2TMB is a discontinued 3-Band preamp that requires 2 9V batteries.