NOLL TCM 4XM 2-Pickup 4-Knob 4-Band Vol P/P A/P - Bl - Treb/Bass Stack - Lo Mid/Hi Mid Stack


  • 2-pickup, 4-band, 4-knob
  • Volume (Push-Pull Active/Passive) - Blend - Treble/Bass Stack - Lo Midrange/Hi Midrange Stack
SKU:BBG 6822

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Control Configuration

2-Pickup 4-Band System

  1. Volume Push-Pull(Push-Pull Active/Passive)
  2. Blend
  3. Treble/Bass stack
  4. Lo Mid/Hi Mid stack

Onboard Preamp


The NOLL TCM 4 XM is a compact equalizer that provides easy and space-saving installation.

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 TCM 4 XM includes the Volume (Push-Pull Active/Passive), Blend control, jack, and battery clip. The concentric Treble/Bass, and concentric Lo Midrange/Hi Midrange controls are prewired with high flexible cables.

Please Note:

Some soldering for Volume and Blend are required. Knobs are not included.

This equalizer can be powered with a minimum 9-volt battery, or 18v to ensure more headroom and longer battery life.

The NOLL TCM 4 XM can be combined with either active or passive pickups.

Potentiometers have a 6mm solid shaft, while any stacked control has 4mm upper, and 6mm lower solid shafts.

Recommended For:

This preamp is recommended for a 4-knob control layouts.

Technical Specifications

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 @ 80Hz
Treble Control +/- 15dB @ 4,2KHz
Low Midrange Control +/- 15dB @ 400Hz
High Midrange Control +/- 15dB @ 1,3KHz
Operating Voltage +9V (+18V optional)
Power Consumption typ. 1,5mA @ 9V / 450h Batt. Life
Dimensions 45x30x16 mm


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