4
120V VERSION SPECIFICATIONS
Power Output
125W
Output Regulation
Direct output:
0.5dB, no load to full load
Transformer outputs:
1.5dB, no load to full load
Input Sensitivity
2B37 dual input module
Input 1: Microphones:
1K
Ω
/350
µ
V
Auxiliary:
10K
Ω
/100mV
Input 2: Microphones:
1K
Ω
/350
µ
V
Auxiliary:
10K
Ω
/1V
Input 3 & 4:
See instruction sheet enclosed with
module
Input 5:
10K
Ω
/100mV
Input 6: Mic Page:
150
Ω
/800
µ
V
Output Impedance
70.7V
40
Ω
(transformer)
25V
5
Ω
(transformer)
31.65V
8
Ω
(transformer)
22.35V
4
Ω
(direct)
Functional Outputs
EQ Out:
1.0V into 600
Ω
(post-master volume)
Line Out:
1.0V into 600
Ω
(post-master volume)
Tape Out:
650mV into 10K
Ω
(pre-master volume)
Mixer Output:
1.0V into 600
Ω
(pre-master volume)
Frequency Response
at 9dB below rated
output (EQ
bypassed)
EIA SE101A
Direct:
Transformer:
20Hz - 20KHz,
±
1dB
20Hz - 20KHz, +1dB/-2dB
Power Bandwidth at
rated output/THD
(EQ bypassed)
Direct:
Transformer:
20Hz - 20KHz,
±
1dB (1% THD)
50Hz - 20KHz, +1dB/-2dB (1% THD)
S/N Ratio
All Controls left:
90dB
Input 5, Mic Page:
55dB
Modules-Low Z Mic:
60dB
Auxiliary:
70dB
Tone Controls
Bass:
±
3dB at 85Hz
Treble:
±
3dB at 12.5KHz
Nominal Load Voltage
Summary of Contents for FREESPACE BMA-125
Page 39: ...Figure 2 2B37 Schematic and PCB Layout 39...
Page 40: ...Figure 3 2B50 Schematic and PCB Layout 40...
Page 41: ...Figure 4 120V Driver PCB Layout Figure 5 120V Tone Volume Control PCB Layout 41...
Page 43: ...Figure 8 230V Driver PCB Layout 43...
Page 44: ...Figure 9 230V Tone Volume Equalizer PCB Layout 44...
Page 45: ...Figure 10 230V Wiring Diagram Part 1 45...
Page 46: ...Figure 11 230V Wiring Diagram Part 2 46...
Page 47: ...47...
