DETAILED SPECIFICATIONS
LINE VOLTAGE
Yes/
No
Hi/Lo Line
Nom.
Unit
Notes
US 120vac/60Hz
Yes
108-132
120
Vrms
Normal Operation
Parameter
Spe
cific
atio
n
Unit
Test
Limits
Conditions
Notes
Amp Section
Type (Class AB, D,
other)
D
n/a
Class D Preferred...Sink
required for Class AB
Load Impedance
(speaker)
8
Ohms
n/a
Nominal
Z-curve required
Rated Output Power
200
Watts
120
1 input driven
Input voltage 120 VAC, 60 Hz
THD
1
%
2
22k filter
120W (Power Bandwidth
30-100Hz) @ 120 VAC
THD @ 1 Watt
0.5
%
0.5
22k filter
DC Offset
<20
mV-DC
30
@ Speaker Outputs
Damping factor
>80
DF
>50
Measured across amplifier
outputs
Input Sensitivity
Input Frequency
35
Hz
Nominal Freq.
1 input driven
Line Input
265
mVrms
±2dB
To Rated Power/
Vol @ Max
1 input driven: AP source Z =
600 ohms
Speaker/Hi Level Input
7
Vrms
±2dB
To Rated Power/
Vol @ Max
1 input driven: AP source Z =
25 ohms
Signal to Noise
SNR-A-Weighted
100
dBA
90
Relative to rated
output
A-Weighting filter
SNR-unweighted
75
dBr
70
Relative to rated
output
22k filter
SNR rel. 1W-unweighted
(22k)
65
dBr
55
relative to 1W
Output
22k filter
Residual Noise Floor
2
mVrms
3
Volume @max, using RMS reading DMM/VOM (or
A/P) , BW <20KHz
Residual Noise Floor
1.5
mVrms(max)
2
Volume @max, w/ A/P Swept Bandpass
Measurement (Line freq.+ harmonics) , BW<20Khz
Input Impedance
Line Input
10K
ohms
n/a
Nominal
Speaker/Hi Level Input
5K
ohms
n/a
Nominal
Filters
0dBr = 1w @ 50Hz
Low Pass (fixed or
variable)
Varia
ble
Low Pass filter (point or
range)
60-1
80
Hz
±2dB
-3dB Point
Slope
24
dB/Octave
n/a
Q
1
Damping
n/a
Subsonic filter (HPF)
25
Hz
±2dB
-3dB Point
Slope
12
dB/Octave
n/a
Q
1
Damping
n/a
4
Amplifier/Subwoofer
BU-150
