9
9
◊
sw ra m p s .co m
◊
block diagram
block diagram
specif ications
specif ications
TYPE:
PR 913
PART NUMBERS:
4415000000 (120V, 60Hz)
4415001000 (110V, 60Hz) TW
4415003000 (240V, 50Hz) AUS
4415004000 (230V, 50Hz) UK
4415005000 (220V, 50Hz) ARG
4415006000 (230V, 50Hz) EUR
4415007000 (100V, 50Hz) JPN
4415009000 (220V, 60Hz) ROK
POWER REQUIREMENT:
950W
POWER AMP
MINIMUM IMPEDANCE:
4Ω
POWER OUTPUT:
400W RMS into 4Ω
300W RMS into 4Ω for 100V Japanese models only
PRE AMP
INPUT IMPEDANCE:
4.7MΩ
SENSITIVITY AT FULL POWER:
15mV
TONE CONTROLS
BASS:
±15dB @ frequency knob setting
MID
:
±15dB @ frequency knob setting
TREBLE
:
±15dB @ frequency knob setting
EFFECTS LOOP
SEND IMPEDANCE:
220Ω
RETURN IMPEDANCE:
10kΩ
DIRECT INTERFACE OUTPUTS
IMPEDANCE:
220Ω
FOOTSWITCH (OPTIONAL):
Two button (P/N 0077794000)
DIMENSIONS
HEIGHT:
1.75 in (4.6 cm)
WIDTH:
8.5 in (21.6 cm)
DEPTH:
9.75 in (24.8 cm)
WEIGHT:
3.75 lb (1.70 kg)
Product specifications are subject to change without notice.
•
DO NOT connect a speaker load with a impedance
total below the minimum rating of your amplifier
to prevent damage to your equipment.
•
DO NOT connect speaker(s) with a power handling
capacity total that is less than the power output
rating of your amplifier to prevent damage to
your equipment.
•
ALWAYS switch your system power OFF before
connecting or disconnecting speakers.
•
ONLY use unshielded speaker cable of 18 gauge or
heavier (16 or 14 gauge) for speaker connections.
Shielded instrument cable WILL NOT work and
may damage your equipment.
•
ONLY connect one amplifier to each speaker load.
Two amplifiers connected to a single load WILL
NOT work and may damage your equipment.
The speaker illustration (left) shows the impedance
load totals for various speaker combinations
(Ω=ohms). The ideal speaker impedance load is
equal to the minimum impedance rating of your
amplifier. Note that using speakers of unmatched
impedances will result in an unequal distribution
of power with most of the power going to the
lower impedance speakers.
Operating below the amp's minimum
impedance rating can overheat your amplifier
and cause damage. Operating above the amp's
minimum impedance rating, while safe, reduces
the amplifier’s maximum power output.
For an in-depth discussion of setup tips for amplifiers
and speakers (including a look at impedance and
power rating issues), visit the
Support
area of the SWR
website at
www.swramps.com
.
speaker guidelines
speaker guidelines
Turn to page 35 to see a block diagram of the
headlite
circuitry.
