JBL ES250PW, Руководство по обслуживанию

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Parameter Specification Unit
QA Test
Limits
Conditions
Notes
ATO Turn-on time 5 ms functional Amp connected and AC on, then
input signal applied
Auto Mute/ Turn-OFF Time 5-15 minutes 5-15
T before muting, after signal is
removed
Auto turn of time (T) must be 5 > T < 15
Minutes
Power on Delay time
3 sec. 4 AC Power Applied
Transients/Pops
ATO Transient 0.5 V-peak 0.5V @ Speaker Output
Amplifier activated by signal presence at the
Line input
Turn-on Transient 0.5 V-peak 0.8V @ Speaker Output AC Line cycled from OFF to ON
Turn-off Transient 0.5 V-peak 0.8V @ Speaker Output AC Line cycled from ON to OFF
Efficiency
Efficiency 65 % 62
Test conducted at rated power
200W Nominal Line voltage
Efficiency 1/8 of rated power 48 % 45 Test conducted at 31.25 WRMS
Nominal Line voltage-Rated impedance 4
Ohms
Input Power 1/8 of rated power 61 Watts 69.4 Test conducted at 31.25 WRMS "
Input current 1/8 of rated power 0.75 Amperes Reference Test conducted at 31.25 WRMS "
Standby Input power 15 Watts 16 Nominal Line voltage RED LED
Idle input power 14 Watts 16 @ nom. line voltage
Maximum allowable input power under
nominal Input voltage and frequency, HOT or
COLD operation. LED GREEN no signal
applied
Power Cons. @ rated power 303 Watts 331 @ nom. line voltage 200 Watts @ 4 Ohms nominal line voltage
Protections
Short Circuit Protection YES functional Direct short at output
Amplifier should resume operation after short
circuit condition removal
Thermal Protection YES functional @1/8 max unclipped Power at
1.06 times the input voltage
Temperature rise in accessible metal parts
should not exceed 35K rise for domestic
version or 30K rise for European versions
(refer to requirements sheet).
DC Offset Protection YES - DC present at Speaker Out leads
Design must insure no Offset/DC Voltage at
the speaker output under any operating
condition including abnormal operation
Line Fuse Rating
USA-Domestic 3.15 Amps 3.15 Type-T or Slo Blo-250 V Internal fuse with UL/SEMKO rated holder
EU 2 Amps 2
Type-T or Slo Blo-250 V, Low
Breaking capacity Internal fuse with UL/SEMKO rated holder
SYSTEM PERFORMANCE USING WIRELESS TRANSMITTER (Tx )
THD @ 1 Watt 0.43 % 0.5 22K filter
Tx Input Impedance
Line Input (LFE) 7.3K ohms n/a Nominal @ 1KHz
System Sensitivity
Using Tx
Input Frequency 50 Hz 50 Nominal Freq.
System level, using Tx
LFE Input 6.5 mVrms ±1dB To 1 Watt System level, using Tx
System gain 50 dB ±1dB To 1 Watt System level, using Tx
System Signal to Noise
Using Tx
SNR-A-Weighted 75 dBA 70 relative to 1W
A-Weighting filter
SNR-unweighted 55 dBr 55 relative to 1W 22K filter
Tx Filters
System filter None Hz
Should not have any effect on the
FR of the system
Refer to AP Graph
Tx Input Limiter dynamic
range
Maximum input voltage the Tx
line input can take without
exceeding 1% of THD at the
output of the sub amp
5.7 Vrms functional
Max input voltage Tx front end can handle
without exceeding 1% THD
Tx-Signal Sensing (ATO)
Auto-Turn-On (yes/no) YES functional
ATO Input test frequency 50 Hz functional
ATO Level LFE Input 2 mV functional
ES250PW
3
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