JBL ES150P, Service Manual

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Parameter Specification Unit
QA Test
Limits Conditions Notes
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 61 %
60
Test conducted at rated power
250W
Nominal Line voltage
Efficiency at 1/8 of rated power 45 % 42 Test conducted at 31.25 WRMS
Nominal Line voltage-Rated impedance 4
Ohms
Off state input power 12 Watts 14 Nominal Line voltage RED LED
Stand-by Input Power 18 Watts 18 @ 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 367 Watts
375 @ nom. line voltage 225 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 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
Other Parameters/Notes:
1. Limiter circuit response must be clean sounding with no apparent pops, noises, or pumping.
2. Plate dimensions not to exceed 11.81"H x 7.87"W and the plate must be airtight with no possibility of air leaks (plastic cover required).
3. Volume control should be
at the input buffer stage in order to lessen the possibility of clipping the input section with highly dynamic audio material.
4. ALL SPECS SHOULD BE MEASURED AT NOMINAL LINE VOLTAGE.
ES150P
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