ES250PW 250W Powered Sub 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 207-253 230 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
Load Impedance (speaker) 4 Ohms n/a Nominal
AVG System impedance 7.25 Ohms n/a AP Computed BW 20 to 500Hz
Min System impedance 4.385 Ohms n/a @ 92Hz
Rated Output Power (120VAC) 250 Watts 240
Domestic version only 120 VAC-60 Hz
AVG RMS Dynamic Power 336 Watts Reference 200mV driven into LFE input
Average RMS power, 3/20 Cycles 50 Hz,
Driven 6dB above its input sensitivity ,
average of the RMS value for the first 4
consecutive peaks
THD @ Rated Power 0.5 % 1 22K filter
THD @ 1 Watt 0.2 % 0.3 22K filter
DC Offset 10 mV-DC 30 @ Speaker Outputs
Damping factor >50 DF 20
Measured at amplifier board 90%
of full power
Measured at the speaker cable. 225 Watts @
THD < 0.1 % @ 50 Hz
Input Sensitivity
Input Frequency 50 Hz 50 Nominal Freq.
L or R 13 mVrms ±1dB To 1 Watt, AP Zo=600
Single input driven, either L or R
LFE input 7 mVrms ±1dB To 1 Watt, AP Zo=600
LFE input driven only.
System Gain (L or R inputs) 43.7 dB Reference
Single input driven L or R inputs (Local inputs)
System Gain (LFE input) 49.1 dB Reference
Single input driven LFE, local input
Signal to Noise
SNR-A-Weighted 80 dBA 75 relative to 1W
A-Weighting filter
SNR-unweighted 65 dBr 60 relative to 1W
22K filter
Residual Noise Floor <1.5
mVrms(max)
2.5
Volume @max, w/ A/P Swept
Bandpass Measurement (Line
freq.+ harmonics) (BW=20 KHz)
Line level inputs must be terminated using
1KOHM
Input Impedance
Line Input (L, R,LFE) 10K ohms n/a Nominal
Filters
LP filter Variable (Normal mode
50-150 Hz ± 10
4th Order variable-24 db/Octave
Subsonic filter (HPF) 2nd Order Fixed
Friend circuit Fixed
LFE Low pass 200>LP<500 Hz LFE input driven only
Limiter
THD at Max. Output Power 5 % functional
Drive unit 6dB above the required
level to obtain full power
Approximately 800mV single input
driven, L or R input
Maximum THD as a result of limiting.
Features --
Volume pot Taper (lin/log) LOG -- functional
A Taper
Phase switch 0-180 deg functional
LP Filter defeat switch YES functional
Disables LP filter, Wireless mode only, it has
no effect when using local inputs
Wireless ready YES functional
Refer to Wireless section below
Wireless channels 4 n/a functional
System is provided with 4 wireless channels,
which can be selected via a rear panel switch,
channel should match ID at Tx side
LED Indicator YES functional
RED-Standby, GRN-Active, ORG-Wireless
link and subwoofer are active.
Input Configuration
Line in (L,R) & LFE
YES -- functional
3 RCA Jacks, RED, WHT (Left and Right) and
Purple for LFE
Signal Sensing (ATO)
Auto-Turn-On (yes/no) YES functional
ATO Input test frequency 50 Hz functional
ATO Line level input 1.5 mV functional
Maximum acceptable level.
ES250PW
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