JBL STUDIO L8400P, Руководство по обслуживанию

Страница: 5 / 24

Parameter Spec. Unit
QA Test
Limits Conditions Notes
Amp Section
Phase switch 0-180 deg functional
Volume pot Taper (lin/log) LOG -- functional 5K 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
On-Off indicators YES functional
Unit is provided with 2 LED's BLU-ON, RED-
OFF
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
Signal Sensing (ATO)
Auto-Turn-On (yes/no) YES functional Auto - on selection switch in Auto
ATO Input test frequency 50 Hz functional "
Min ATO Level L or R Inputs 3 mV functional " Single input driven
Min ATO Level Speaker in L
or R inputs
30 mV functional " Single input driven
ATO Turn-on time 2 seconds functional
Amp connected and AC on, then
input signal applied
Auto Mute/ Turn-OFF Time 5 minutes 17
(T) Time before muting, after
minimum ATO signal is removed
(3mV)
Auto turn of time (T) must be 5 > T < 17
Minutes
Auto Mute/ Turn-OFF Time 15 Minutes
17
(T) Time before muting, after input
signal is removed Auto turn of time (T) must be 10 > T < 17
Minutes
Power on Delay time 2 sec.
4 AC Power Applied
Transients/Pops
ATO Transient 5 mV-peak n/a @ Speaker Outputs
Turn-on Transient 50 mV-peak 1V-pk-pk @ Speaker Outputs AC Line cycled from OFF to ON
Turn-off Transient 50 mV-peak 1V-pk-pk @ Speaker Outputs AC Line cycled from ON to OFF
Efficiency
Efficiency 68 % 65 400W of output power Nominal Line voltage 120 VAC
Stand-by Input Power 18 Watts 20
@ nominal line voltage, Amp in
OFF state, RED LED activated Maximum allowable input power LED in
RED, Class D inactive
Stand-by Input Power 22 Watts
25
@ nom. line voltage, Amp in On
state, Green LED activated
Maximum allowable input power under
nominal Input voltage and frequency, in
stand-by mode (HOT or COLD operation,
LED GREEN). Class D active but no signal
applied.
Power Cons. @ 400W 584 Watts
615 @ nom. line voltage 400 Watts into 4 Ohms nominal line voltage
Protection
Thermal Protection YES functional @1/8 max unclipped Power
Temperature rise in accessible metal parts
should not exceed 35K rise for domestic
version or 30K rise for European versions
(refer to requirements sheet). Unit is
protected for over-temperature conditions
DC Offset Protection YES - DC present at Speaker Out leads Relay opens during a DC output condition
Line Fuse Rating
USA-Domestic 5
Amps Type-T or Slo Blo-250 V
EU 2.5 Amps
Type-T , Low Breaking capacity-250
V
Internal fuse with UL/SEMKO rated holder
L
8400P L series
4