LD Premium LDSP46K 4-Channel Power Amplifier The LDSP46K is a no-compromise 4-channel power amplifier providing professional performance and versatility in a compact switch mode power supply Class H design. With a massive output of 4x 1.440W into 2Ohms and 2x 2.880 in 4Ohms stereo bridge mode it is an extremely efficient solution for touring and […]
The LDSP46K is a no-compromise 4-channel power amplifier providing professional performance and versatility in a compact switch mode power supply Class H design. With a massive output of 4x 1.440W into 2Ohms and 2x 2.880 in 4Ohms stereo bridge mode it is an extremely efficient solution for touring and installation sound reinforcement weighing in at a mere 8.6kg.
Consistent operation is ensured by the heavy duty construction with high quality components and comprehensive protection circuitry including soft start with turn-on muting, PMS™ power management, SSP™ (Safe operation Sentry Protection) and ICL™ Intelligent Clip Limiting to maintain signal integrity. Protection circuits against DC, thermal and power supply overload are implemented. A switchable subsonic filter and a 3-position gain switch offer variable amplifier adjustment.
The LDSP46K features a full 20Hz – 20kHz bandwidth with low THD and crosstalk, a damping factory higher than 500, excellent S/N ratio and 3 selectable gain/sensitivity levels.
Protection: Soft-start, Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short circuit, Open or mismatched loads, Overloaded power supply, ICL Clip Limiter, PMS, SSP
Controls: On/Off, Volume, Voltage Gain, Dual / Link switchable, Bridge / Stereo configuration switch
The LDSP46K is a no-compromise 4-channel power amplifier providing professional performance and versatility in a compact switch mode power supply Class H design. With a massive output of 4x 1.440W into 2Ohms and 2x 2.880 in 4Ohms stereo bridge mode it is an extremely efficient solution for touring and installation sound reinforcement weighing in at a mere 8.6kg.
Consistent operation is ensured by the heavy duty construction with high quality components and comprehensive protection circuitry including soft start with turn-on muting, PMS™ power management, SSP™ (Safe operation Sentry Protection) and ICL™ Intelligent Clip Limiting to maintain signal integrity. Protection circuits against DC, thermal and power supply overload are implemented. A switchable subsonic filter and a 3-position gain switch offer variable amplifier adjustment.
The LDSP46K features a full 20Hz – 20kHz bandwidth with low THD and crosstalk, a damping factory higher than 500, excellent S/N ratio and 3 selectable gain/sensitivity levels.
Protection: Soft-start, Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short circuit, Open or mismatched loads, Overloaded power supply, ICL Clip Limiter, PMS, SSP
Controls: On/Off, Volume, Voltage Gain, Dual / Link switchable, Bridge / Stereo configuration switch
Cooling System: 2 x continuously variable speed fan, rear to front
Power Supply: AC~230V / 50 Hz
Power Consumption Full Load: 19 A
Dimensions (W x H x D): 483 x 89 x 310 mm
The S Series of RAM Audio amplifiers distils all these features to fulfill all your needs, whether youʼre starting a P.A. amplifier project from scratch, or you need to upgrade your present sound reinforcement equipment.
In the S Series amps, you'll find five 2-channel models and five 4-channel models, all offering plentiful power levels at low distortion in the range of 1.5 to 6 kilowatts, yet weighing in around 8 kilos and 30 cm deep.
• Ultra-compact and lightweight 2-U high
• Laser cut aluminum front panels with integrated carrying handles
• Neutrik® XLR input connectors, input and signal link in 2 channel models
• Input Link switch: allow daisy-chaining of the input signal
• Neutrik® Speakon® output connectors
• Detented sealed potentiometers for easy recall of volume settings
• ICL™, PMS™, Hi-temp, Signal indicators per channel
• Power on and Stand-by leds
• Highly versatile with multiple configuration and additional module options
• Full PC control via EtheRAM (with EtheRAM Control module)
• Switchable ICL™ clip-limiters per channel
• Switchable (30-50 Hz) sub-sonic highpass filter per channel
• Three-position gain selector (26, 32 or 38 dB)
• Dual or bridge mode selector
• Twin temperature controlled, back to front cooling fans
• Oversized power components (high SOA reserve specification)
Standard Signal Inputs Module: The S Series amps are equipped as standard with twin Neutrik® XLR, doubled by two other XLR connectors for linking purposes. In the 4 Channel models an XLR input per channel is provided with the signal linking facility.
Analog Processor Module: permits a very easy, user-friendly signal processing to enable the amp to set up a bi-amp system without any other outboard device. These are the Processor's main characteristics:
• 2-way stereo crossover (dual mono or single bridged sub output)
• 24dB/oct Linkwitz-Riley configurable crossover (90, 100 o 120Hz)
• Adjustable attenuation in the High-pass outputs (-3, -6 or -9dB)
• Adjustable Limiter, relative to Max. Output (-3, -6 or -9dB)
DSP44_S Module: Digital Signal Processor fully programmable through an USB port. These are the Processor's main characteristics:
• 4 Inputs/4 Outputs or 2 In/2 Out free route configurable.
• 24 bits/192 kHz 256x Oversampling Converters.
• Output Delay: 0 to 7.1 meters (20.69ms) per channel.
• XOver: Up to 48dB/oct Butterworth, Linkwitz-Riley and Bessel.
• EQ: 9 filters per channel (Parametric, Shelving, LP,HP,BP,SB).
• Gain, Mute and Phase inversion per channel.
• RMS Power and Peak Voltage output limiter per channel.
• Real Time operation from USB or front panel configuration.
Standard Signal Inputs Module
EtheRAM Control Module
Ethernet Audio Transport (Coming soon)
Analog Processor Module
DSP44_S Module
EtheRAM Control Module
AES/EBU Digital Input (Coming soon)
OUTPUT POWER
S-1500
S-2000
S-3000
S-4000
S-6000
S-3004
S-4004
S-4044
S-6004
S-6044
1kHz, 1.0% THD
2 ohms
2x880W
2x1190W
2x1570W
2x1950W
2x2950W
4x700W
4x980W
-
4x1440W
-
4 ohms
2x575W
2x790W
2x1100W
2x1380W
2x2025W
4x500W
4x670W
4x975W
4x1000W
4x1480W
8 ohms
2x325W
2x460W
2x630W
2x810W
2x1250W
4x300W
4x430W
4x690W
4x620W
4x1015W
Bridge @ 4ohms
1760W
2380W
3140W
3900W
5900W
2x1400W
2x1960W
-
2x2880W
-
Bridge @ 8ohms
1150W
1580W
2200W
2760W
4050W
2x1000W
2x1340W
2x1950W
2x2000W
2x2960W
P. N. 12dB C.F.
2 ohms
2x975W
2x1360W
2x2060W
2x2460W
2x4225W
4x890W
4x1170W
-
4x2080W
-
4 ohms
2x610W
2x880W
2x1240W
2x1600W
2x2600W
4x580W
4x820W
4x1230W
4x1280W
4x2110W
Frequency Response (power bandwidth ±0.25dB): 20Hz-20kHz
Phase Response (@1W 20Hz-20kHz): ±15deg
Total Harmonic Distortion (20Hz-20kHz): Intermodulation Distortion (SMPTE): Crosstalk (20Hz-20kHz): >75dB
Voltage Gain (selectable): 26/32/38 dB
Sensitivity: 1500:2.6/1.3/0.6V 2000:3.0/1.5/0.8V 3000:3.6/1.8/0.9V 4000:4.0/2.0/1.0V 6000:5.0/2.5/1.3V
3004:2.6/1.3/0.6V 4004:3.0/1.5/0.8V 4044:3.7/1.9/0.9V 6004:3.5/1.8/0.9V 6044:5.0/2.5/1.3V
Signal to noise ratio: 1500:112dB 2000:113dB 3000:115dB 4000:116dB 6000:118dB
3004:112dB 4004:113dB 4044:116dB 6004:116dB 6044:118dB
Required AC Mains (@4ohms 1/8 r.p.): 1500:4A 2000:4.8A 3000:6.2A 4000:7.5A 6000:10.5A
3004:6A 4004:7.5A 4044:11A 6004:10.5A 6044:15A
Dimensions (WxHxD): 483x88.9x310 mm - 19x3.5x12.2 inches
Weight (Net): 1500/2000: 8Kg - 17.6Lbs 3000/4000/3004/4004/4044: 8.5Kg-18.7Lbs 6000/6004/6044: 8.6Kg-18.9Lbs
Protections: Soft-start, Turn-on Turn-off transients, Muting at turn-on, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, Overloaded power supply,ICL™, PMS™, SSP™
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)
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
Multichannel Power with Minimum FootprintThe T Series multichannel power amplifiers have been designed especially for installation and networked audio systems.
T Series amplifiers* are available with 4 and 8 discrete channels and output ratings from 160 to 320 Watts per channel providing optimum solutions for multizoning. They feature Euroblock inputs, terminal strip outputs and a rugged 2U rackmountable chassis with 4 mm front panel.
*Also available as GPIO versions with remote and emergency paging switchin
Main Features
8 and 4-channel models with 300 and 150 Watts (RMS) output power per channel
compact 2U rackmountable chassis, 220 mm deep, weight 6 kg only
GPIO versions for remote and emergency paging switching
FCM system
oversized heat dissipation system for maximum thermal stability
low THD and high S/N ratio
all channels bridgeable in pairs
switchable input gain (26, 32 and 38 dB)
subsonic filters for each channel (35 Hz)
intelligent, quiet fan cooling system
terminal strip loudspeaker connectors
PCBs with surface-mount technology (SMT) for increased reliability
protection, signal, clip, power on and standby LED indicators for each channel
compact QuantaPulse power supply
multi-voltage: automatic voltage converter for worldwide use, no switching required
protections: soft start, turn on/turn off muting, thermal overload, DC, RF, short circuit, open circuit, load mismatch and power supply overload
ICL™: improved Intelligent Clip Limiting prevents loudspeaker damage while maintaining audio quality and punch under clipping conditions.
FCM™: the Faulty Channel Management system prevents overall amplifier shutdown.
GPIO:General-Purpose-I/O-Port
QuantaPulse™ Technology: The Soft Switching Resonant QuantaPulse Power Supply is designed to provide plenty of power when needed monitoring the necessary parameters of voltage and current for a controlled performance at all times. Bi-directional data flow between the power supply and power amp module. Two very important characteristics of the QuantaPulse power supply are the optimization against over-voltages and superior reliability.
• Eight and four channel models with 300W and 150W per channel
• Minimal footprint and mass arround 200mm depth and 6 Kg
• Optional Add-on card to interface with third party alarm systems with GPIO connections
• FCM™ Faulty Channel Management system to avoid entire device shutdown
• State-of-the-art layout for maximum performance and reliability
• Highly oversized thermal dissipation design for maximum reliability
• Superb distortion and noise figures
• All channels bridgeable by pairs
• Selectable gain in four channel groups (26, 32 and 38dB)
• Subsonic filter per channel (35Hz user selectable)
• Temperature and signal dependant, intelligent cooling system for minimal noise
• Optimal heat extraction due to the air tunneled enclosure and insulator-less power devices attachment to the heatsink
• Direct connector-less output for maximum quality loudspeaker control
• High grade engineering inside with the latest SMD technology
• Balanced Inputs with 0.1% tolerance resistors for a precise noise rejection
• Critical electronic and mechanical parts selection
• Innovative protection systems, FCM™ Faulty Channel Management and SSP™ SOA Sentry Protection
• Detented and optionally tamper-proof volume potentiometers
• Hi efficiency, two steps Class H Audio topology
• Protection, Signal and Clip indicators per channel
• Power On and Standby general indicators
• Extremely compact, fully featured QuantaPulse Power supply
• Low current consumption and heat generation allowing less demanding conditions for multiple amplifier installations
• Factory preset worldwide mains voltage power supply
• Laser cut four milimeters aluminium front panel
• Rugged 2U steel chasis
Frequency Response (power bandwidth ±0.25dB): 20Hz-20kHz
Phase Response (@1W 20Hz-20kHz): ±15deg
Total Harmonic Distortion (20Hz-20kHz):
Intermodulation Distortion (SMPTE):
Crosstalk (20Hz-20kHz): >70dB
Voltage Gain (selectable): 26/32/38 dB
Sensitivity: T604:1.5/0.8/0.4V - T1204:2.1/1.0/0.5V - T1208:1.4/0.7/0.4V - T2408:2.0/1.0/0.5V
Signal to noise ratio: T604:107dB - T1204:110dB - T1208:107dB - T2408:110dB
Required AC Mains (@8ohms 1/8 rated power): T604:1A - T1204:1.5A - T1208:1.4A - T2408:2.6A
Dimensions (WxHxD): 483x88.9x210 mm - 19x3.5x8.27 inches
Weight (Net): T604/T1204: 5.4Kg - 11.8Lbs T1208/T2408: 6.2Kg-13.5Lbs
Protections: Soft-start, Turn-on Turn-off muting, Over-heating, DC, RF, Short-circuit, Open or mismatched loads, Overloaded power supply, SSP™ and FCM™
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PA Power Amplifier 4 x 160 W 4 Ohms
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