Specifications
PORTABLE PA
27
Specifications
The following applies to units in Stereo mode with 8-ohm loads and rated input sensitivity
unless otherwise specified.
Performance
Sensitivity (volts RMS) for full rated power at 4 ohms: 1.4V
Frequency Response (at 1 watt) 22 Hz to 22 kHz: ±1 dB.
Phase Response (degrees at 1 watt, 20 Hz to 20 kHz): +5°, –18°
Signal-to-Noise Ratio:
A-weighted, below rated power: > 102 dB.
22Hz to 22kHz, below rated power: > 97 dB.
Total Harmonic Distortion (THD) at full bandwidth power, from 20 Hz to
20 kHz: <0.5%.
Intermodulation Distortion (IMD):(60 Hz and 7 kHz at 4:1) from full rated
output to –40 dB: < 1%.
Damping Factor (8 ohm) 10 Hz to 400 Hz: > 200.
Crosstalk at 1 kHz (below rated power):
Xs500: > 55 dB
Xs700: > 55 dB
Xs900: > 67 dB
Xs1200: > 65 dB
Xs4300: > 57 dB
Crosstalk at 20 kHz (below rated power):
Xs500: > 55 dB
Xs700: > 55 dB
Xs900: > 62 dB
Xs1200: > 45 dB
Xs4300: > 40 dB
Voltage Gain (at maximum level setting):
Xs500: 32:1 (30.1 dB)
Xs700: 38:1 (31.6 dB)
Xs900: 42:1 (32.5 dB)
Xs1200: 47.4:1 (33.5 dB)
Xs4300: 25:1 (27.8 dB)
Load Impedance: Safe with all types of loads. Rated for 2 to 8 ohms per
channel in Stereo, 4 to 8 ohms in Bridge Mono.
AC Line Voltage and Frequency Configurations Available (±10%):
120VAC/60 Hz and 230VAC/50 Hz.Controls
Level: Two or four front-panel, gray rotary level controls, one for each
channel.
Power: Front-panel switch; on when in the right-hand position.
Indicators
Signal: Two or four green LEDs, one for each channel, illuminates when
the channel’s input signal level is above –40 dBu.
Clip: Two or four front-panel red LEDs, one for each channel, illuminates
when the channel’s output signal is being overdriven.
Power: Yellow front-panel LED indicates amplifier has been turned on and
AC power is available.
AC Mains: Red front-panel LED indicates the presence of AC power at the
power cord, even if the amplifier is not turned on.
Fault: Red front-panel LED illuminates when amplifier is in protect mode.
Also illuminates briefly during normal power-up when amplifier is first
switched on.
Bridge: Yellow LED indicates that amplifier is in Bridge-Mono mode
(Channels 1 and 2, Channels 3 and 4 in Xs4300).
Temp: Red LED indicates that channel(s) are in thermal protect mode.
Input/Output
Input Connectors:
XLR-1/4 inch combo connectors: One per channel, 3-pin female XLR
connector and TRS-1/4 inch phone jack accept balanced or unbal-
anced signals.
3-pin Phoenix-style connectors (2-channel models only): One per
channel, accepts balanced or unbalanced signals
Input Impedance (nominal) balanced, unbalanced:
20 k ohms, 10 k ohms.
Output Connectors:
Balanced XLR connectors (2-channel models only): One per channel,
3-pin male XLR connector in parallel with XLR-1/4 inch combo and
Phoenix-style input connectors for daisy-chain operation.
5-way binding post output connectors: One pair per channel; accept
banana plugs, spade lugs or bare wire.
Note: Binding post outputs on
European models come with safety plugs installed to prevent European power-
cord plugs from being inserted. The top & bottom entry positions for these con-
nectors should therefore be used with European models.
4-pole Speakon output connector (2-channel models only): One connec-
tor per channel. Accepts a 4-pole Speakon connector.
DC Output Offset (shorted input): ±75 millivolts.
Output Signal: Stereo, unbalanced, two-channel or four-channel (Xs4300 only).
Protection
Xs Series amplifiers provide extensive protection and diagnostic capa-
bilities, including output current limiting, microprocessor-controlled
DC protection, circuit breaker, and special thermal protection for the
unit’s transformers.
Construction
Ventilation: Flow-through ventilation from front to back.
Cooling: Internal heat sinks with forced-air cooling for rapid, uniform heat
dissipation.
Air Volume Requirements (per minute per unit): 80.15 ft³ (2.27 m³).
Dimensions: EIA Standard 19-inch (48.3-cm) rack mount width (EIA RS-
310-B), 3.5-inch (8.9-cm) height and 17.22-inch (43.8-cm) depth
behind the mounting surface.
Weight
Net Weight: 28 lb (12.7 kg).
Shipping Weight: 34 lb (15.4 kg)
The Xs Series of power amplifiers from Crown represents a new era in
affordable, quality switch-mode power amplification. The line consists
of four models in a uniform, rugged 2U chassis, incorporating the best
of tried-and-true design principles and innovative features. The three 2-
channel models in the series are the Xs500, Xs700, and Xs900. Each
has identical features, except for output power. The Xs4300 is a 4-
channel model. Xs Series amplifiers are professional stereo power
amplifiers engineered to meet demanding audio requirements—reliably
and within budget.
Other Applications:
Regulatory Certifications: