Detailed Specifications - Infinity Beta SW-12 Preliminary Service Manual

SW-12
SW-12 300W Powered Sub/ Plate Amp
LINE VOLTAGE Yes/No
US 120vac/60Hz
EU 230vac/50-60Hz
Parameter Specification
Amp Section
Type (Class AB, D, other)
Load Impedance (speaker)
Rated Output Power
THD @ Rated Power
THD @ 1 Watt
Dynamic Power
DC Offset
Damping factor
Input Sensitivity
Input Frequency
L&R
LP Off Mode selected
Speaker/Hi Level Input
Signal to Noise
SNR-A-Weighted
SNR-unweighted
SNR rel. 1W-unweighted
Residual Noise Floor
Residual Noise Floor
Input Impedance
Line Input (L, R,LFE)
Speaker/Hi Level Input
Filters
LP 4th order variable
Subsonic filter (HPF) 2nd Orde
Low pass filter OFF
BOS
Frequency Control
Range
Level Control
Range
Width(Q) Control
Range 4.5% to 49.5% octave
Limiter
THD at Max. Output Power
Features
Auto - On -Off
Phase switch
Volume pot Taper (lin/log)
Variable crossover 50-150 Hz
HP Speaker out
LP On- Off Select switch
Input Configuration
Hi/Lo Line Nom.
Yes 108-132 120
Yes 207-264 230
QA Test
Unit Limits
D n/a n/a
n/a
6 Ohms
250 Watts 225
0.1 % 1
0.1 % 0.2
400 Watts 380
10 mV-DC 60
>50 DF 23
30
30 Hz
14.7 mVrms ±2dB
14.7 mVrms ±2dB
0.206 Vrms ±2dB
100 dBA 90
90 dBr 85
60 dBr 55
1
0.5 mVrms
0.5 mVrms(max) 1
10K ohms n/a
n/a
10K ohms
50-150 Hz ± 10
Fixed Hz ± 10
Fixed Hz ± 10
--
functional 21 detent pot (0.1 oct. steps)
20-80 Hz
-- --
-14.1 to 0 dB functional 21 detent pot (0.5dB steps)
-- --
functional 21 detent pot (5steps/0.1 octave)
YES n/a functional
--
YES -- functional
0-180 deg functional
LOG -- functional
YES functional
functional
YES
functional
YES --
Unit
Vrms
Vrms
Conditions
Nominal
1 input driven
22K filter
22K filter
Power is the average measurement
of the first consecutive cycles of the
burst signal
@ Speaker Outputs
Measured at amplifier board
Nominal Freq.
To 1 Watt
To 1 Watt
To 1 Watt
Relative to rated power
Relative to rated power
Relative to 1W Output
Volume @max, using RMS reading
DMM/VOM (or A/P)
Volume @max, w/ A/P Swept
Bandpass Measurement (Line
freq.+ harmonics)
Nominal
Nominal
L or R input driven, LP Filter OFF
2
Notes
Normal Operation
Normal operation, MOMS required
Notes
Bridge type amplifier, None of the speaker
terminals must be connected to system GND at
any time.
Limiter prevents continuous power to exceed
240 Watts, amplifier delivering power in excess
of 300 Watts at 4 Ohms of load impedance.
3/20 Cycles @ 50 Hz, burst test into 4 Ohms,
input driven 6dB above its maximum sensitivity,
volume level at Maximum, RABOS Section OFF
Measured at the speaker cable. 200 Watts,
measured at speaker output terminals located at
the amp board.
Single input driven, Ap Zo=600 Ohms, LP ON,
RABOS OFF, Volume ctrl & crossover at max
Single input driven , Ap Zo=600 Ohms, LP OFF,
RABOS OFF, Volume ctrl & crossover at max
Single input driven, Ap Zo=25 Ohms, LP ON,
RABOS OFF, Volume ctrl & crossover at max
A-Weighting filter
22K filter
22K filter
No switch to select the ATO mode is provided,
Refer to ATO section
A Taper
4th Order LP Variable crossover
Pass through from the speaker input section
Disables LP filter, intended for LFE