QSC CX254 เครื่องขยายเสียง 4 ชาแนล 170 วัตต์ ที่ 8 โอมห์ CX254 Power Amplifier จากแบรนด์ QSC
QSC CX254
4-Channel Low-Z Power Amplifier
คุณสมบัติ
- Compact size — only 2 RU and 14″ deep for reduced rack cost and floor space
- Bridgeable channels 1 + 2 and 3 + 4, for maximum flexibility
- Active inrush limiting eliminates AC inrush current, removing the need for expensive power sequencers
- HD15 DataPort connector for Q-SYS networked control and monitoring
- Custom integrated security cover for tamper-proof installations
- Variable-speed fan for low noise
- 1-dB detented gain controls for fast and accurate gain settings
- Detachable Euro style input connectors
- DIP switch control for clip limiters, high pass filters, bridge mono and parallel operation
- Exclusive PowerLight switch-mode power supply technology for high performance and compact size
- Selectable high-pass filters protect speakers and prevent speaker transformer saturation with minimal effect on program material (33 Hz or 75 Hz)
- Comprehensive front panel indicators including signal, clip, protect and QSC’s exclusive bridge mono and parallel input LEDs
- Barrier strip output connector
- Comprehensive protection circuitry including DC, infrasonic, thermal overload and short circuit protection
- High-performance Class AB+B complementary bipolar output circuitry
- Lightweight—all models only 21 pounds (9.5 kg) for easier racking and shipping
- 3-year warranty plus optional 3-year extended service contract
- All CX Series amplifiers meet the European Union’s, 2006 RoHS directive to restrict the use of hazardous materials used in electronic devices.
สเปค
SPECIFICATIONS |
CX254 |
POWER PER CHANNEL, STEREO MODE (all channels driven) |
|
|
8Ω, 20 Hz–20 kHz 0.05% THD |
170 W |
4Ω, 20 Hz–20 kHz 0.05% THD |
250 W |
2Ω, 1 kHz 1% THD |
450 W |
|
70 V, 20 Hz–20 kHz 0.05% THD |
– |
|
70 V, 1 kHz 0.05% THD |
– |
|
70 V, 1 kHz 1% THD |
– |
|
POWER, BRIDGED MONO MODE |
|
|
16Ω, 20 Hz–20 kHz 0.1% THD |
340 W |
|
8Ω, 20 Hz–20 kHz 0.1% THD |
500 W |
|
4Ω, 1 kHz 1% THD |
900 W |
|
140 V, 20 Hz–20 kHz 0.1% THD |
– |
|
140 V, 1 kHz 0.05% THD |
– |
|
140 V, 1 kHz 1% THD |
– |
|
Noise, 20 Hz–20 kHz |
>106 dB |
|
Input Sensitivity |
1.22 V rms |
|
Maximum Voltage Gain |
29 dB |
|
Input Clipping |
10 V rms (+22 dBu) |
|
Output Circuitry Class |
AB+B |
|
Distortion(SMPTE-IM) |
Less than 0.01% |
|
ALL MODELS |
|
|
Distortion(Typical) |
Less than 0.01% THD |
|
Frequency Response(typical) |
20 Hz–20 kHz, ± 0.2 dB 8 Hz–50 kHz, +0/-3 dB |
|
Damping Factor |
Greater than 500 (1 kHz and below) |
|
Input Impedance |
6 kΩ unbalanced, 12 kΩ balanced |
|
Cooling |
Variable speed fan, rear to front airflow through tunnel heat sink |
|
Connectors, each channel |
Input: 3 position Euro-style detachable barrier block, channels 1, 2, 3, 4 |
|
Amplifier Protection |
Full short circuit, open circuit, thermal, ultrasonic, & protection. Stable into reactive or mismatched loads. |
|
Load Protection |
On/off muting, DC-fault power supply protection |
|
Indicators |
CLIP/PROT: Red LED (1 per channel) |
|
Controls |
Controls Front: AC switch, four gain knobs |
|
Dimensions |
19″ (48.3 cm) rack mounting, 3.5″ (8.9 cm) tall (2 rack spaces), |
|
Weight |
21 lb (9.5 kg) net, 27 lb (12.3 kg) shipping |
|
Power Requirements |
100, 120, 230 V AC, 50–60 Hz |
