AER Alpha Plus Mode D'emploi page 9

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6. Technische Daten
Effects
Internal effect Built-in digital reverb
External effect Parallel effect loop, (effect blended with dry
sound) see send and return.
Power amp
Construction
Monolithic IC with DMOS output
Output power 40 W / 4 ohms (THD = 1%)
Continuous output power is determined
by limiter, see limiter threshold.
Distortion
THD + N < 0.1% (4 W / 4 ohms),
measured at loudspeaker terminals
Noise
Residual noise (A-weighted SPL):
approx. 16 dB (A) / 1 m
See also inputs and outputs for noise specs.
Analog signal processing
Subsonic filter, adaptive peak limiter
Limiter threshold 35 W / 4 ohms
Speaker system 8" (200 mm) twin cone full-range speaker,
bass reflex enclosure
Power supply Mains voltage (depending on model):
100, 120, 230, or 240 V~, 50–60 Hz
Power consumption: max. 100 W
Mains fuse
Size: 5 x 20 mm
For 230 and 240 V models: T 1A L 250V
For 100 and 120 V models: T 2A L 250V
General
Operating temperature range
0...35 °C
Cabinet
12 mm (0.47") birch plywood
Finish
Waterbased acrylic, black spatter finish
Dimensions and weight
Dimensions
265 mm (10.4") high
330 mm (13") wide
235 mm (9.25") deep
Weight 7.2 kg (15.9 lbs)
Alpha (Modell 2010)
Versionsinformation:
Diese technischen Daten setzen voraus:
Leiterplatte Board 1 Rev. D, Vers. 5 (EAGLE-Dateien
5091104D_5*)
Leiterplatte Board 2 Rev. C, Vers. 1 (EAGLE-Dateien
5091201C_1*)
Netztrafo Noratel
Daten meßtechnisch geprüft: 11_05_2016 HHB
Notes
Options configurable by internal jumpers (refer modification to
qualified personnel):
· 9 V phantom power for input 2
Caution: Phantom power may damage external
equipment. Read the notes in the operating instructions.
· Low-gain option (more headroom) for mic input
· Deactivation of 48 V phantom power for mic input
Definitions
Rated conditions
· Nominal input voltage at input under test
· master fully clockwise
· high / low and colour off
· bass / middle / treble centered
· gain of unused inputs and efx level fully anticlockwise
· gain of input under test adjusted to nominal
output voltage at line out. (This condition corresponds by
design to the rated output power.)
Nominal input voltage: Standard condition for
specifications, if not stated otherwise.
Minimum input voltage: Input voltage required for nominal
output with maximum gain and volume settings.
Maximum input voltage: Input voltage that does not cause
distortion more than rated THD+N, suitable control settings
provided.
Nominal output voltage or power refers to rated conditions.
THD + N: Total harmonic distortion + noise, input voltage redu-
ced by 10 dB after setting up rated conditions.
Signal / noise ratio: Ratio of output voltage at rated conditions
to output noise voltage with input shorted. Equivalent input
noise voltage: Noise voltage at loudspeaker terminals divided by
gain of amplifier. Input shorted after setting up rated conditions.
Residual noise: Output noise with minimal gain and volume
settings.
Adaptive limiter: Adaptive with respect to power supply.
Maintains constant headroom regardless of power supply
fluctuations.
General: Signal voltages are RMS values. Test signal sine 1 kHz
sine unless stated otherwise. Noise measured from 20 Hz to 20
kHz. Noise stated for a specific input implies that all other inputs
are not used. Sound pressure level (SPL) based on loudspeaker
specification by manufacturer.
Specifications and appearance subject to change without notice.
TD2016051
9

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