The BBE BMAX-T Bass Guitar Pre-amp User Guide provides setup, controls, specifications, and maintenance instructions.
This guide explains the features, connections, and operation of the BBE BMAX-T tube bass pre‑amp, a high‑quality unit for studio and live use. It includes safety precautions, a description of the interactive three‑band EQ, the BBE Sonic Maximizer process, and the optional footswitch functions.
The manual also lists detailed technical specifications, wiring diagrams, service and warranty information, and recommended maintenance procedures to keep the unit performing reliably.
| Frequency Response | 15 Hz – 30 kHz ±3 dB |
|---|---|
| Signal‑to‑Noise Ratio | 100 dB @ unity |
| THD (Tube section) | 1 % |
| THD (Post‑tube section) | <0.02 % |
| Maximum Output | +22 dBu |
| Noise Floor | -77 dBu @ unity gain, EQ flat |
| Input Impedance (Passive) | 1 MΩ |
| Input Impedance (Active) | 100 kΩ |
| Output Impedance (Balanced XLR) | 600 Ω |
| Output Impedance (Unbalanced 1/4") | 1 kΩ |
| Bright Switch Boost | +10 dB @ 10 kHz |
| Power Requirements (US/Canada/Japan) | 120 VAC, 50/60 Hz, 8 W |
| Power Requirements (Standard) | 220 VAC, 50/60 Hz, 8 W |
| Dimensions | 19" W × 5.5" D × 1.7" H |
| Weight | 7 lb |
It disables the ground pin of the XLR connector to eliminate ground‑loop hum.
Turn the PROCESS knob clockwise; the green LED lights to show the process is active.
120 VAC, 50/60 Hz, consuming 8 watts.