T1450 digital amplifier

Specifications

C-MARK digital power amplifiers are based on PWM technology which has been 30 years in the field of power converters. Output efficiency is up to 95%. Advanced power circuit design and global mains voltage enable a stable work under 100V-240V input. No need for any manual adjustments. They can be widely used in areas with different power supply or unstable voltage.

• Zero error modulation is to avoid scope error in the process of converting analog audio signal to digital signal using modulation technique. Closed-loop control technology is adopted to eliminate noise and distortion.

• MOSFET is adopted for amplifying, feature a large dynamic range, high efficiency, good transient response, and able to work safely and stably between load impedance 2Ω and 8Ω.

• T series has output ports in link interface, which ensures the signal quality and greatly reduces signal distribution cost. Stereo, parallel modes can provide connecting flexibility of sound reinforcement system.

• COBRANET interface can be added on the digital power amplifier, which realizes network audio signal digital-processing and transmission.

• Protection technology:

• 1. Over current protection. When there is a short circuit in the output or under low impedance threatens the safety of the power amplifier, the protection starts and output signals are closed. When the hazard is removed, it can be detected automatically and back to normal work. Strengthened capacitive load protection ensures no damage for the power amplifier when connecting any load.

• 2. Current limit technology. Thermal design of digital power amplifier is according to 1/3-1/6 rated power. When sine wave test signals are input and the amplifier outputs at RMS power, it usually becomes overheated. The current limit is to restrict power amplifier to work at rated sine wave output power for a long time and avoid overheating. It does not work unless at overheating situation.

• 3. Built-in thermal limit design, which can automatically balance heating and cooling. When the temperature rises, a corresponding power output decreased. When the temperature reaches a balanced degree, the volume will be maintained at a certain value and the amplifier will not stop working. So the sound break can be avoided.

T1450 Specifications:

• Power: 450W/8Ω 900W/4Ω 1000W/2Ω

• S/N signal to noise ratio:105dB

• GAIN: 30dB-33dB (T series digital amplifier are provided three gain selection for connection of different load usage. Low impedance connects low gain to prevent exceptional protection)

• Frequency response: 20Hz-20kHz (+1/-2dB)

• Damping factor: 300@1kHz

• Input impedance: 15kΩbalanced

Phase differences in the effective frequency range(typical value):

• 20Hz:+11°

• 1kHz:-6°

• 20kHz:-137°

CMRR common mode rejection rate ( typical value):

• 100Hz:71dB

• 1kHz:66dB

• 20kHz:66dB

Cross-talk attenuation (typical value):

• 20Hz:85dB

• 1kHz:80dB

• 20kHz:65dB

THD total harmonic distortion (typical value):

• 100Hz:0.08%

• 1kHz:0.08%

• 20kHz:0.05%

IMD intermodulation distortion (typical value):

• Power:1 Watt

• DIM 100 (dB): 0.05%

• SMPTE 60/7k (dB): 0.05%

Power supply Specifications:

• Global voltage AC 100V-240V 50/60Hz

• Electric current@220V AC

• 1/8 rated power:1A/8Ω 1.7A/4Ω 1.9A/2Ω

• 1/3 rated power:2.2A/8Ω 3.9A/4Ω 4.2A/2Ω