The Yamaha MS101-4 is a compact and versatile 30W powered monitor speaker, designed for desktop use, small setups, and portable monitoring applications. With a 4" full-range driver, bass-reflex enclosure, and Class-D amplifier, it delivers clear, high-output sound up to 115 dB SPL. The MS101-4 features a combo input (XLR/TRS), stereo mini jack, TRS input, and line out, making it highly flexible for various professional and educational environments. Its compact form, lightweight design (2.1kg), and mounting options (mic stand, wall, ceiling) make it a practical choice for utility monitoring.
Compact Full-Range Powered Monitor Speaker – 4" cone driver with ferrite magnet
Clear & Powerful Output – 77Hz–20kHz frequency range, 115 dB SPL max output
Class-D Amplifier – 30W dynamic (20W continuous) power
Versatile Connectivity – Combo input (XLR/TRS), stereo mini jack, TRS input, TRS line out
Flexible Controls – Volume, Low, High EQ controls
Mounting Options – Mic stand (with BMS-10A), wall, ceiling, or clamp
Lightweight & Portable – Only 2.1 kg with natural cooling (no fan noise)
Universal Power Supply – 100–240V, 50/60Hz
Speaker Type: Full-range Powered Speaker (Bass-Reflex)
Frequency Range (-10dB): 77Hz – 20kHz
Max Output Level: 115 dB SPL (1m, on-axis)
Driver: 4" Cone, 1" Voice Coil, Ferrite Magnet
Amplifier: Class-D, 30W Dynamic / 20W Continuous
Cooling: Natural cooling (no fan)
Inputs:
[Front] Combo Jack (XLR/TRS)
[Rear] LINE 1: Stereo Mini, LINE 2: TRS Phone
Line Out: TRS Phone ×1
AC Inlet: 1 × AC power connector
Input Impedance: LINE/MIC: 5.4kΩ, LINE 1/2: 10kΩ
Input Sensitivity: LINE: -10 dBu, MIC: -40 dBu
Max Input Level: LINE: +20 dBu, MIC: -10 dBu
Controls: Volume, Low, High, Power
Indicators: Power (Green LED)
Power Consumption: 10W (1/8 Power), 3W (Idle)
Power Supply: 100–240V AC, 50/60Hz
Mounting Options: Mic Stand (BMS-10A), Clamp (BAS-10), Wall (BWS20-190), Ceiling (BCS20-150/210)
Dimensions (W×H×D): 142 × 196 × 187 mm
Net Weight: 2.1 kg (4.6 lbs)
