CROWN CT-4150 POWER POWER AMPLIFIER 4Χ150W/8OHM

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)
Shipping Weight    15 lbs (6.8 kg)
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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

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)

  

The C 16:4 is one of two mid-power, four-channel amplifiers in the C Series family. Attractively packaged in a 2U chassis, it provides 4 × 400 W output into 4 ohm loads.

C Series amplifiers are uniquely capable of adapting to a wide variety of demanding load conditions. Each channel has an individually configurable Voltage Peak Limiter (VPL™), which allows the output to be optimized for any loudspeaker load – whether a single large subwoofer or a series of small 100/70 V loudspeakers. VPL works in combination with adjustable input gain to achieve maximum headroom regardless of input levels or output impedances.

Every C Series is ready for the NomadLink® network right out of the box. With NomadLink, key amplifier parameters are displayed via DeviceControl software, and remote control of channel mutes and power on/off is under network control.

Specifications C 16:4

General
Number of channels 4
Peak total output all channels driven 1600 W
Peak output voltage per channel 141 V
Max. output current per channel 8.5 Arms
Max. Output Power 16 ohms 8 ohms 4 ohms 2 ohms Hi-Z
Per ch. (all ch.’s driven) 400 W 400 W 300 W n.r. 400 W (70 Vrms / 100 V peak)
Bridged per ch. 800 W 600 W n.r. n.r. 800 W (140 Vrms / 200 V peak)
Performance with Gain: 35 dB and VPL: 100 V
THD 20 Hz - 20 kHz for 1 W 70 dB
Frequency response (1 W into 8 ohms) +0/-3 dB 6.8 Hz - 34.2 kHz
Input impedance 20 kOhm
Input Common Mode Rejection, CMR 50 dB
Output impedance @ 100 Hz 30 mOhm
Voltage Peak Limiter (VPL), max. peak output
VPL, selectable per ch. 3) 141, 118, 100, 85, 71, 59, 50, 42 V
VPL, selectable when bridged 3) 1) 282, 236, 200, 170, 142, 118, 100, 84 V
Voltage Peak Limiter mode (per ch.) Hard / Soft
Gain and Level
Amplifier gain selectable (all channels) 1)
– rear-panel switches
23, 26, 29, 32, 35, 38, 41, 44 dB
Default gain 35 dB
Level adjustment (per ch.) Front-panel potentiometer, 21 position detented from -inf to 0 dB, hidden behind security panel/dust filter grille
Connectors and switches
Input connectors (per ch.) 3-pin Phoenix, electronically balanced
Output connectors (per ch.) Barrier strip 2-pole screw terminals
Output bridge mode A+B and/or C+D, inputs A and C are input source
NomadLink® network On board, 2 x RJ45 connectors
Intelligent fans (on/off) Yes, depending on presence of output signal
Power on/off and Remote enable on/off Individual switches on front-panel
Cooling Two fans, front-to-rear airflow, temperature controlled speed
Front-panel indicators
Common NomadLink® Network; Power Average Limiter (PAL) 2); Power on
Per channel
Signal present / High-impedance; -10 dB and -4 dB output signal; Voltage Peak Limiter (VPL); Current Peak Limiter (CPL);
Very High Frequency (VHF); High Temperature; Fault; Mute
Power
Operating voltage, 230 V / 115 V nominal 130 -265 V / 65-135 V
Minimum power-up voltage, 230 V / 115 V 171 V / 85 V
Power Average Limiter (PAL) 2) Yes
Soft start / Inrush current draw Yes / max. 5 A
Mains connector 230 V CE: 16 A, CEE7; 115 V ETL: 20 A / NEMA 5-20P
Dimensions (W/H/D) W: 483 mm (19”), H: 88 mm (2 U), D: 343 mm (13.5”)
Weight 12 kg (26.4 lbs.)
Finish Black painted steel chassis with gray painted steel front
Approvals CE, ANSI/UL 60065 (ETL), CSA C22.2 NO. 60065, FCC
Note 1): Automatic -6 dB gain compensation when bridging channels. Ch.’s A+B and/or C+D, can be bridged individually.
Note 2): PAL can reduce the maximum output power to keep the power supply operating safely, and/or to prevent excessive current draw tripping the mains breaker.
Refer to Operation Manual.
Note 3): For sine waves, peak voltage output values translate to Vrms with the formula V/1.41 = Vrms. E.g. 100 V peak equals app. 70 Vrms.
Hence, outputs can be set for high-impedance loads without requiring a transformer.
All specifications are subject to change without notice.