Amp.unit; Performance Graph; Block Diagram - Yamaha MS300 Owner's Manual

Specifications
General specifications
Type
Bi-Amp 2-way bass reflex powered speaker
(Bi-amplifier electronic crossover network))
Speaker unit
LF : 30 cm cone
HF : 5 cm Titanium diaphragm compression driver
Frequency Range .................. 50 Hz~16 kHz (–10 dB)
Maximum Output Level.......... 121 dB (1m on Axis)
Directional angle.................... 90˚ (H)/40˚ (V)
Dimension (W x H x D) .......... 406 x 637 x 348.5 mm
Weight ................................... 23.7 kg
Color ...................................... Black (approx. Munsell value:
Tripod pole diameter .............. 35~36 mm
Accessories ..............................Power cord (AC inlet type, 2.5 m)

Amp.unit

Maximum Output Power
LF: 225 W at 500 Hz, THD=1%, RL=4
HF:85 W at 5 kHz, THD=1%, RL=16
Crossover frequency ............. 1.6 kHz (30 dB/oct.)
Input Sensitivity ..................... LINE: +4 dB*, MIC: –50 dB*
Input impedance .................... LINE: 30 k , MIC: 5 k
Dimensions
2-M8 depth17
150
406

Block Diagram

Mic Input
Line Input/Output
Phone Jack
6
5PB 2/1)
Remove the cover when you
use optional brackets
348.5
Unit: mm
Mic Master
HPF
Line
Controls
LEVEL ............... MASTER, MIC, LINE
EQ ....................... LOW: 0 (Max.) ~ –8 dB (Min.) at 55 Hz
Power switch.......................... On/Off
Connectors (all balanced):
LINE in/out ....................... XLR-3-31, XLR-3-32, phone
MIC in............................ XLR-3-31
POWER indicator .................. Green LED
Power Requirement
Power Consumption .............. 100 W
Option .................................... Bracket BWS251-400, BCS251,
* 0 dB=0.775 V
• Specifications and appearance are subject to change without
notice.
For European Model
Purchaser/User Information specified in EN55103-1 and
EN55103-2.
Inrush Current: 31A
Conformed Environment: E1, E2, E3 and E4

Performance graph

Standard Frequency Response
+10
0
0
–4
–8
–10
–20
–30
–40
20
LOW CUT LPF
LOW
EQ
Freq. response
compensation
HPF
HIGH
EQ
HIGH: ±3 dB (HF)
(They are all connected in parallel
and can be used as line outputs.)
USA and Canada .......120 V, 60 Hz
Europe........................230 V, 50 Hz
Others ........................240 V, 50 Hz
and BBS251
100 1k
FREQUENCY (Hz)
P.AMP
LF
SPEAKER
P.AMP
HF
SPEAKER
+3
0
–3
10k