Detailed Specifications - Infinity BU-150 Service Manual

Amplifier/Subwoofer
LINE VOLTAGE
US 120vac/60Hz
Parameter
Amp Section
Type (Class AB, D,
other)
Load Impedance
(speaker)
Rated Output Power
THD
THD @ 1 Watt
DC Offset
Damping factor
Input Sensitivity
Input Frequency
Line Input
Speaker/Hi Level Input
Signal to Noise
SNR-A-Weighted
SNR-unweighted
SNR rel. 1W-unweighted
(22k)
Residual Noise Floor
Residual Noise Floor
Input Impedance
Line Input
Speaker/Hi Level Input
Filters
Low Pass (fixed or
variable)
Low Pass filter (point or
range)
Slope
Q
Subsonic filter (HPF)
Slope
Q

DETAILED SPECIFICATIONS

Yes/ Hi/Lo Line Nom.
No
Yes 108-132 120
Spe Unit Test
cific Limits
atio
n
D n/a
8 Ohms n/a
200 Watts 120
1 % 2
0.5 % 0.5
<20 mV-DC 30
>80 DF >50
35 Hz
265 mVrms ±2dB
7 Vrms ±2dB
100 dBA 90
75 dBr 70
65 dBr 55
2 mVrms 3
1.5 2
mVrms(max)
10K ohms n/a
5K ohms n/a
Varia
ble
60-1 Hz ±2dB
80
24 dB/Octave n/a
1 Damping n/a
25 Hz ±2dB
12 dB/Octave n/a
1 Damping n/a
Unit Notes
Vrms Normal Operation
Conditions Notes
Class D Preferred...Sink
required for Class AB
Nominal Z-curve required
1 input driven Input voltage 120 VAC, 60 Hz
22k filter 120W (Power Bandwidth
30-100Hz) @ 120 VAC
22k filter
@ Speaker Outputs
Measured across amplifier
outputs
Nominal Freq. 1 input driven
To Rated Power/ 1 input driven: AP source Z =
Vol @ Max 600 ohms
To Rated Power/ 1 input driven: AP source Z =
Vol @ Max 25 ohms
Relative to rated A-Weighting filter
output
Relative to rated 22k filter
output
relative to 1W 22k filter
Output
Volume @max, using RMS reading DMM/VOM (or
A/P) , BW <20KHz
Volume @max, w/ A/P Swept Bandpass
Measurement (Line freq.+ harmonics) , BW<20Khz
Nominal
Nominal
0dBr = 1w @ 50Hz
-3dB Point
-3dB Point
BU-150
4