TM1/TM2

TM On Board preamps are designed for installation in a bass guitar. Construction based on TDi preamp is equipped with MLO system. Their innovation is the modular design for easy configuration of controllers.Two bass pre-amp models are available. The TM-2 used for two pick-ups basses and the TM-1 used for basses with one pick-up only. The pre-amps are identical except for the input modules. Custom input modules for bass guitars equipped with piezzo pick-up are available.

The pre-amp contains four main modules (VOLUME, BLEND, BASS and TREBLE) which must be used. The sequence of connected modules is unrestricted. Three optional modules (PUNCH , PRESENCE/BOOST and MIDDLE) can be use in any possible configuration or not at all. The modules (Pre-amp and optional) are designed to be easily joined together by the flat connecting wire (No soldering required).

The Taurus pre-amps can be powered ether by one or two 9V batteries. The two battery option (18V) is recommended for greatest dynamic range.

On board pre-amps could work on low battery power (3-4V) but would compromise sound quality by its loss of dynamic and consequently, distortion. To prevent this, Taurus pre-amps are built with a Low Battery LED Power Indicator, signaling replacement time.

Taurus recommends installing the LED indicator on the back cover plate of the instrument, eliminating the need for additional connections and adapters. Simply secure the LED (3mm diameter) in the designated opening of the back cover.

User friendly installation
Customizable modular design
Optional modules PUNCH, MIDDLE and PRESENCE/BOOST
Unrestricted sequence of connected modules
Low battery indicator
9V or 18V supply
Compact size

PREAMP FUNCTIONS:

VOLUME control
Pickups BLEND control
BASS control: 40Hz +/-10dB @MLO 550Hz -/+5dB 
it is possible to change it to 80Hz by bridge on PCB
TREBLE control:  8kHz +12dB/-14dB
MIDDLE control: 2kHz +8dB,  800Hz -8dB
PRESENCE/DBS-BOOST with triple micro-switch
DBS: 65Hz +7dB and 6kHz +4dB
PRESENSE: 6kHz +6dB
PUNCH tone with triple micro-switch
Punch Low: 300Hz +7dB
Punch High: 600Hz +7dB
ACTIVE/PASSIVE mode switch

Current supply consumption:
1,1mA @ 9V main configuration
1,6mA @ 9V maximum configuration

CONFIGURATION   (TM1 for 1-pickup / TM2 for 2-pickups)

TM1-basic set: VOLUME, BASS, TREBLE and pick-up input module with signal adjustment. 

TM1-full set: VOLUME, BASS, TREBLE, MIDDLE, PUNCH, BOOST.

TM2-basic set: VOLUME BLEND, BASS, TREBLE.

TM2-full set: VOLUME, BLEND, BASS, TREBLE, MIDDLE, PUNCH, BOOST.

TM1/TM2 - user configuration: BASIC SET + any of optional modules: MIDDLE, PUNCH, BOOST.

DBT - DEMO BOARD FOR TM1/TM2 PREAMPS

DBT module makes presentation of the sound of TM easy. While using DBT module there is no need to solder and install the preamp in a guitar. To link particular modules, just follow the instruction in the picture [the modules can be linked in any order]. Connect the DBT module output to amplifier input. Connect the guitar to the DBT input. While TM preamp presentation the guitar with passive output is recommended.