Onboard Preamp
TCM 4 XM

The NOLL TCM 4 XM is a compact equalizer that provides easy and space-saving installation. The secure insulation of the sealed equalizer perfectly protects other electrical components. Bass, low-midrange, high-midrange and treble controls are center-detented and allow 15dB of boost and cut with a gentle slope of 6dB per octave which results in a natural and true sound.

The equalizer is 9-Volt battery powered, adding an additional 9-Volt battery (18V) will ensure more headroom and longer battery life.

The NOLL TCM 4 XM onboard preamp can be combined with both active and passive pickups.

All units are prewired with high flexible cables, delivery contents all pots, jack and battery clip; however, knobs are not included.

Potentiometers have 6 mm solid shafts, while the stacked pot has 4 mm (upper) and 6 mm (lower) solid shafts.

Our MixPot also allows you to combine high impedance Piezo with magnetic pickups. Further custom configurations are available.

Wiring Options TCM 4 XM

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Addition passive tone control available as a single shaft pot or as a concentric pot with active treble control.

Tone roll-off in passive mode on every single shaft treble control available (double function).

Specifications TCM 4 XM

Technical Data

The low impedance output of the TCM 4 XM provides other great features. You can run a cable for up to 100 feet (30 m) without losing high frequency response.

Input Impedance >1 MOhm
Output Impedance <10 KOhm
Input Sensitivity max. 450mV @ 9V
Output Voltage max. 4,5V @ 9V
S-N-Ratio 96dB (1KHz/5Vss)
Bass Control +/- 15dB @ 40Hz
Low Midrange Control +/- 15dB @ 400Hz
High Midrange Control +/- 15dB @ 1,3KHz
Treble Control +/- 15dB @ 4,2KHz
Operating Voltage +9V (+18V optional)
Power Consumption typ. 1,5mA @ 9V / 450h Batt. Life
Dimensions 45x30x16 mm

All specifications subject to change without notice.

Wiring Diagram TCM 4 XM