Infinity Beta CSW-10, Service Manual

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CSW-10 450W Powered Sub/ Plate Amp
LINE VOLTAGE Yes/No Hi/Lo Line Nom. Unit Notes
US 120VAC/60Hz Yes 108-132 120 Vrms
Normal Operation
EU 230VAC/50-60Hz Yes 207-264 230 Vrms
Normal operation, MOMS required
Parameter Specification Unit
QA Test
Limits Conditions Notes
Amp Section
Type (Class AB, D, other) D n/a
n/a
Bridge type amplifier, None of the speaker
terminals must be connected to system GND at
any time.
Load Impedance (speaker) 4 Ohms n/a Nominal
Rated Output Power 450 Watts 425 1 input driven
THD @ Rated Power 0.5 % 1 22K filter
THD @ 1 Watt 0.1 % 0.2 22K filter
Dynamic Power 450 Watts 430
Power is the average measurement
of the first four consecutive peaks of
the burst signal 3/20 Cycles @ 50 Hz, burst test into 4 Ohms,
input driven 6dB above its maximum sensitivity,
volume level at Maximum, RABOS Section OFF
DC Offset 80 mV-DC 100 @ Speaker Outputs
Damping factor >20 DF 15 Measured at amplifier board
Measured at the speaker cable. 200 Watts,
measured at speaker output terminals located at
the amp board.
Input Sensitivity
Input Frequency 50 Hz 30 Nominal Freq.
Left or Right inputs 10.29 mVrms ±2dB To 1 Watt
Single input driven, Ap Zo=600 Ohms, LP ON,
RABOS OFF, Volume ctrl & crossover at max
Left & Right with LFE or LP
filter OFF Mode selected
10.17 mVrms
±2dB
To 1 Watt
Single input driven , Ap Zo=600 Ohms, LP OFF,
RABOS OFF, Volume ctrl & crossover at max
Speaker/Hi Level Input 158 mVrms ±2dB To 1 Watt
Single input driven, Ap Zo=25 Ohms, Normal,
RABOS OFF, Volume ctrl & crossover at max
Signal to Noise
SNR-A-Weighted 100 dBA 95 Relative to rated power (400 Watts) A-Weighting filter
SNR-unweighted 95 dBr
90
Relative to rated power (400 Watts) 22K filter
SNR rel. 1W-unweighted 70 dBr 65 Relative to 1W Output 22K filter
Residual Noise Floor 0.5 mVrms 1
Volume @max, using RMS reading
DMM/VOM (or A/P)
Residual Noise Floor 0.5 mVrms(max) 1
Volume @max, w/ A/P Swept
Bandpass Measurement (Line
freq.+ harmonics)
Input Impedance
Line Input (L, R,LFE) 10K ohms n/a Nominal
Speaker/Hi Level Input 10K ohms n/a Nominal
Filters
LP 4th order variable 50-150 Hz ± 10 Refer to AP graph 1
Subsonic filter (HPF) 3rd Orde Fixed Hz
± 10 Refer to AP graph 1
Low pass filter OFF Fixed Hz
± 10 L or R input driven, LP Filter OFF Refer to AP graph 1
BOS
Frequency Control --
Range 20-80 Hz functional 21 detent pot (0.1 oct. steps) Refer to AP graph 2
Level Control -- --
Range -14.1 to 0 dB
functional 21 detent pot (0.5dB steps) Refer to AP graph 3
Width(Q) Control -- --
Range 4.5% to 49.5% octave functional 21 detent pot (5steps/0.1 octave) Refer to AP graph 4
Limiter
THD at Max. Output Power YES n/a functional
Features --
Auto - On -Off YES -- functional
No switch to select the ATO mode is provided,
Refer to ATO section
Phase switch 0-180 deg functional
Volume pot Taper (lin/log) LOG -- functional A Taper
Variable crossover 50-150 Hz YES functional
4th Order LP Filter, 2nd order fix and 2nd order
variable.
HP Speaker out YES functional Pass through from the speaker input section
LP On- Off Select switch YES --
functional Disables LP filter, intended for LFE
Input Configuration
Line In (L,R) & LFE
YES --
functional Dual RCA jack, L or R is used in LFE mode
Spkr/Hi Level In YES -- functional Binding post connector L&R
CSW-10
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