Read JBL ES 250P (serv.man2) Service Manual online
Yes/No
Hi/Lo Line
Nom.
Unit
Notes
Turn-off Transient
0.5
V-peak
0.8V
@ Speaker Output
AC Line cycled from ON to OFF
Efficiency
Efficiency
65
%
60
Test conducted at rated power
250W
Nominal Line voltage
Efficiency at 1/8 of rated power
48
%
45
Test conducted at 31.25 WRMS Nominal Line voltage-Rated impedance 4 Ohms
Off state input power
10
Watts
12
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
406
Watts
416
@ nom. line voltage
250 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
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
EU
2
Amps
2
Type-T or Slo Blo-250 V, Low
Breaking capacity
Other Parameters/Notes:
1. Limiter circuit response must be clean sounding with no apparent pops, noises, or pumping.
1. Limiter circuit response must be clean sounding with no apparent pops, noises, or pumping.
2. 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.
3. ALL SPECS SHOULD BE MEASURED AT NOMINAL LINE VOLTAGE.
ES250P
JBL ES 250P
Service Manual
Page 13 of 30
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