| Content | Power Output Level QD4960 :
8ohm (Quad Ch) 170W
4ohm (Quad Ch) 240W
8ohm bridged mono 480W
Input Sensitivity (8ohm, 1kHz) 0.775Vrms
Input Impedance 20kohm Balanced
Slew Rate (8ohm, Full Swing) ±30V/?sec
Frequency Response (±0.5dB) 20kHz ~ 50kHz
T.H.D. (f=20Hz~20kHz, Half Power) 0.03%
Signal to Noise Ratio 105dB
Damping Factor (8ohm, 1kHz) 100
Rasidual Noise -85dB
Channel Separation (8ohm, 1kHz) 80dB
Voltage Gain (4ohm) 26dB 29dB 32dB
Power Source 100-120VAC or 220-240VAC ; 50/60Hz
(supplied AC mains transformer depends on country requirements)
Power Consumption 300W 420W 770W
Weight 11.5kg/25.3lb 15.5kg/34.2lb 17kg/37.5lb
Dimensions 482(W) x 88(H) x 369(D) mm
/19(W) x 3.5(H) x 14.5(D) in |
Model CT475
Product Type Amplifier
Channels 4
Sensitivity 1.4V
Rated Power Output 75W per Channel into 8 ohms
Signal to Noise Ratio (below rated power 20Hz to 20kHz, A-Weighted 110dB
Total Harmonic Distortion (THD) (full rated power, 20Hz - 20kHz)
Intermodular Distortion (from 0dB down to -40dB)
Frequency Response (at 1W into 4/8 ohms) ± 0.5dB
Crosstalk (below rated power 20Hz to 1kHz) > 70dB
Common Mode Rejection (20Hz to 1kHz) > 55dB, typically > 70dB
Dimension (H x W x D) 1.75" x 19" x 14.25“
Weight 10 lbs (4.5 kg)
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Power Output Level 20Hz - 20kHz 1kHz THD+N=0.2%, 8Ω 80W x 4
Power Output Level 20Hz - 20kHz 1kHz THD+N=0.2%, 4Ω 115W x 4
Sensitivity, RL=8. Att.max +4dB
S/N Ratio, 20Hz-20kHz (DIN AUDIO) 100dB
Idle Power Consumption 40W
1/8 Power Consumption (4Ω) 500W
Power Bandwidth, (Half power THD+N=0.5%) 10Hz – 40kHz
Intermodulation Distortion, 60Hz: 7kHz, 4:1, half power 0.1%
Frequency Response, f=20Hz-20kHz -0.5dB, 0dB, 0dB
Residual Noise, 20Hz-20kHz(DIN AUDIO) -70dB
Voltage Gain, 8Ω, f=1kHz 100
Sensitivity, ATT. max 26dB
Maximum Input Voltage 22dB
Input Impedance 30kΩ (balance) 15kΩ (unbalance)
Controls, Front panel POWER switch (push on/push off), attenuator (31position) x 4
Controls, Rear panel MODE switch (STEREO/BRIDGE/PARALLEL) x 2 HPF switch (OFF/20Hz/55Hz 12dB/oct) x 2
Connectors, Output 5–way binding post/ch
Connectors, DATA PORT D-sub15P, Monitor:Output Level/ch,Active/ch, Model Detect Control:Mute/ch
Connectors, Power AC inlet x 1
Indicators, POWER x 1 (Green)
Indicators, SIGNAL x 4(Green)
Indicators, CLIP/LIMIT x 4 (Red)
Indicators, PROTECT/MUTE x 4 (Red)
Load Protection POWER switch on/off mute, DC-fault output relay off
Power Requirements UC: 120V / 60Hz,
Weight 10kg (22 lbs.)
Dimensions (W x H x D) 480 x 88 x 412.2 mm (18-7/8" x 3-7/16" x 16-1/4“)
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The DPA series amplifiers are digital power amplifiers designed to meet the specialized needs of sound contractors for Multi-Zone distributed speaker systems. They are designed in six different models of Class D power amplifiers, divided in three different architectures to meet the requirements for all kinds of applications.
They combine the best of all features in one single series of amplifiers, providing an outstanding sound quality with all the known advantages of Class D Amplifiers. Such as the excellent efficiency and very low heat dissipation. And due to the complete passively cooled entity only a minimal of maintenance is needed, while ensuring maximum reliability.
The small size of a single rack space make them very interesting for fixed rack mount as well as mobile applications.
The DPA74 is built as multi channel power amplifier with four individual controllable channels containing various specific features and advanced protection circuitry which protects against DC malfunctioning, short circuit, overheating and overload.
The signal input connections are accommodated with balanced XLR connectors. The operation mode can be selected between Stereo mode, Bridge mode and Parallel mode. The output connections are accommodated with Euro-Terminal blocks.
- Model Name / Type: DPA74 / Digital Amplifier
- 8 ohms: 4 x 50 W
- 4 ohms: 4 x 75 W
- 8 ohms Bridge: 2 x 150 W
- THD+N:
- Signal / Noise: > 100 dB
- Frequency Response: 20 Hz - 20kHz
- Power Supply: 240 V AC / 50 - 60 Hz
- Dimensions (W x H x D): 483 x 44 x 300 mm
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Model CT475
Product Type Amplifier
Channels 4
Sensitivity 1.4V
Rated Power Output 75W per Channel into 8 ohms
Signal to Noise Ratio (below rated power 20Hz to 20kHz, A-Weighted 110dB
Total Harmonic Distortion (THD) (full rated power, 20Hz - 20kHz)
Intermodular Distortion (from 0dB down to -40dB)
Frequency Response (at 1W into 4/8 ohms) ± 0.5dB
Crosstalk (below rated power 20Hz to 1kHz) > 70dB
Common Mode Rejection (20Hz to 1kHz) > 55dB, typically > 70dB
Dimension (H x W x D) 1.75" x 19" x 14.25“
Weight 10 lbs (4.5 kg)
| Product Features:
- 4 x 75 Watts into 4 Ohms; 4 x 50 Watts into 8 Ohms
- ATR (Accelerated Transient Response) technology for ultimate punch and clarity
- Ultra-light, ultra-low noise and ultra-efficient switch-mode power supply for noise-free audio, superior transient response and low power consumption
- Independent limiters for each channel offer maximum output level with reliable overload protection
- Detented gain controls for precise setting and matching of sensitivity
- Precise Power, Signal and Clip LEDs to monitor performance
- Servo-balanced XLR and 1/4" TRS inputs plus professional speaker connectors
- Independent DC and thermal overload protection on each channel automatically protects amplifier and speakers without shutting down the show
- “Back-to-front" ventilation system including air filter for reliable operation
- “Built-like-a-tank“, impact-resistant and all-steel 1U rackmount chassis
- Minimum depth chassis (10.1" / 257 mm) and ultra-light weight design (8.8 lbs / 4.0 kg) fits into compact, inexpensive effects racks
- High-quality components and exceptionally rugged construction ensure long life
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