ราคาพิเศษสอบถามโทร 02 981 0944 มือถือ 080 614 4774,098-565-9747
แฟ็กซ์ : 02 981 0744 E-mail : lsb@lsbthai.com
DA-250F เป็นแอมพลิไฟเออร์ดิจิตอลแบบ 4 แชลแนล ที่ให้น้ำหนักเบากระทัดรัดกะทัดรัดให้กำลังสูงและมีประสิทธิภาพสูง กำลังขับ 250 W × 4 (เอาต์พุต 4โอห์ม) โดยใช้แหล่งจ่ายไฟสลับ แต่ละช่องมีการติดตั้งส่วนพลังงานอิสระ สามารถติดตั้งในชั้นวางอุปกรณ์มาตรฐาน EIA (ขนาด 1 U)
The DA-250F is a 4-Channel Digital Power Amplifier featuring lightweight, compact, high power output, and high efficiency. It delivers 250 W × 4 channels (4 Ω output) using a switching power supply. Each channel is equipped with an independent power section. It can be mounted in an EIA Standard equipment rack (1 unit size).
Digital Power Amplifiers
Digital Quad Amplifier
FEATURES :
• DA-250FH
• 4x 250W (100V)
• Limiter and High pass filter
• DA-250F
• 4x 250W (4 ohms) / 170W
• (8 ohms)
• 2x 500W bridged mode
• (8 ohms)
• Limiter
• 4x 250W (4 ohms) / 170W (8 ohms)2x 500W bridged mode (8 ohms)
• Limiter
• Class D design – 85% efficient!
• 30% lower power consumption than conventional amplifiers
• Compact, single rack-space design
• Stack up to 5 units without open spaces between units
• Lightweight (14.6 lbs.)
• Independent power supply for each channel
• Low heat dissipation
• Recessed stepped attenuators
• Comprehensive protection circuitry
• Removable dust filters for easy maintenance
• Optional 250W isolation transformer, model MT-250H (DA-250FH only)
- *0 dB = 0.775 V
| Power Source |
120 V AC, 50/60 Hz |
| Amplification System |
Class D |
| Power Consumption |
200 W (based on UL/CSA standards)
1300 W (rated output 4 Ω × 4)
850 W (rated output 8 Ω × 4) |
| Input |
4 circuits, +4 dB* (1.23 V) (input level control in maximum position),
10 kΩ, electronically-balanced, removable terminal block (3 pins)
CH 1 mode ON/OFF switch (ON: CH 1 to All ch, OFF: Each ch) |
| Rated Output |
4 channels: 250 W × 4 (4 Ω), 170 W × 4 (8 Ω)
2 channels (BRIDGE): 500 W × 2 (8 Ω)
M4 screw terminal, distance between barriers: 8.8 mm |
| Frequency Response |
20 - 20,000 Hz (±1 dB) |
| Total Harmonic Distortion |
0.1% (1 kHz)
0.3% (20 - 20,000 Hz) |
| Protection Circuit |
Protection against excessive current flow due to overload,
short circuit, unusual DC voltage output,
temperature rise at power amp. heat sink (110℃ or more),
temperature rise inside the unit (80℃ or more) |
| S/N Ratio |
100 dB (A-weighted) |
| Crosstalk |
70 dB (A-weighted) |
| LED Indicator |
Power (blue) × 1, Input (green) × 4, Output (yellow) × 4,
Peak (red) × 4, Protect (red) × 4 |
| Cooling |
Forced air cooling |
| Operating Temperature |
-10℃ to +40℃ |
| Operating Humidity |
90% RH or less (no condensation) |
| Finish |
Panel: Aluminum, black, alumite Case: Plated steel sheet |
| Dimensions |
482 (W) × 44 (H) × 401.8 (D) mm |
| Weight |
6.6 kg |
| Accessory |
Power cord (2 m) …1, Removable terminal plug (3 pins) …4,
Tamper-proof cap …4 |
