Modern power amplifiers have developed into light, powerful, versatile, rugged and reliable instruments designed to keep working in the most arduous conditions. At RAM Audio, we have an enviable reputation in the industry, and continue to stay at the forefront of audio design by offering our many customers all those concepts combined with the following major advantage: a sensible price level for our pedigree products.
This is made possible by our constant development of state-of-the-art designs, together with meticulous component selection and rigorous supervision of assembly quality.
The S Series of RAM Audio amplifiers distils all these features to fulfill all your needs, whether you’re 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
• Optional low latency 24bits 120dB DSP with post-DSP signal links. More info…
• 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)
• PMS™: Power Management System controls the amount of power that the amp delivers under different circumstances.
• SSP™: SOA Sentry Protection effectively limiting the power that the amp could deliver into an incorrect load or to a direct short-circuit
• ICL2™: improved Intelligent Clip Limiting
• Input signal muting at turn on
• Thermal overload protection
• Progressive Ramp input signal
| Output Power | S1500 | S2000 | S3000 | S4000 | S6000 | S3004 | S4004 | S4044 | S6004 | S6044 |
| 2 ohm | 2x975W | 2x1360W | 2x2060W | 2x2460W | 2x4225W | 4x890W | 4x1170W | – | 4x2080W | – |
| 4 ohm | 2x610W | 2x880W | 2x1240W | 2x1600W | 2x2600W | 4x580W | 4x820W | 4x1230W | 4x1280W | 4x2110W |
| 8 ohm | 2x340W | 2x500W | 2x680W | 2x900W | 2x1540W | 4x320W | 4x510W | 4x830W | 4x770W | 4x1360W |
| Bridge 4 ohm | 1x1950W | 1x2720W | 1x4120W | 1x4920W | 1x8450W | 2x1780W | 2x2340W | – | 2x4160W | – |
| Bridge 8 ohm | 1x1220W | 1x1760W | 1x2480W | 1x3200W | 1x5200W | 2x1160W | 2x1640W | 2x2460W | 2x2560W | 2x4220W |
| Continuous Power | ||||||||||
| 2 ohm | 2x880W | 2x1190W | 2x1570W | 2x1950W | 2x2950W | 4x700W | 4x980W | – | 4x1440W | – |
| 4 ohm | 2x575W | 2x790W | 2x1100W | 2x1380W | 2x2025W | 4x500W | 4x670W | 4x975W | 4x1000W | |
| 8 ohm | 2x325W | 2x460W | 2x630W | 2x810W | 2x1250W | 4x300W | 4x430W | 4x690W | 4x620W | 4x1015W |
| High Z | ||||||||||
| 70Vrms/100Vpeak | – | – | 2x1240W | 2x2460W | – | – | – | 4x1200W | 4x1500W | – |
| 100Vrms/140Vpeak | 1x1140W | 1x2500W | – | – | 2x2800W | 2x1100W | 2x2000W | – | – | 4x1700W |
| S1500 | S2000 | S3000 | S4000 | S6000 | S3004 | S4004 | S4044 | S6004 | S6044 | ||
| Frequency Response (power bandwidth ±0.25dB) | 20 Hz – 20 kHz | ||||||||||
| Phase Response (@1W 20Hz-20kHz) | ±15 deg | ||||||||||
| Total Harmonic Distortion (20Hz-20kHz) | <0.05% | ||||||||||
| Intermodulation Distortion (SMPTE) | <0.05% | ||||||||||
| Damping Factor (20Hz-500Hz @8ohm) | >500 | ||||||||||
| Crosstalk (20Hz-1kHz) | >75 dB | ||||||||||
| Voltage Gain (selectable) | 26/32/38 dB | ||||||||||
| Sensitivity | 2.6/1.3/0.6V | 3.0/1.5/0.8V | 3.6/1.8/0.9V | 4.0/2.0/1.0V | 5.0/2.5/1.3V | 2.6/1.3/0.6V | 3.0/1.5/0.8V | 3.7/1.9/0.9V | 3.5/1.8/0.9V | 5.0/2.5/1.3V | |
| Signal to noise ratio | 112 dB | 113 dB | 115 dB | 116 dB | 118 dB | 112 dB | 113 dB | 116 dB | 116 dB | 118 dB | |
| Required AC Mains |
Operat. Voltage (50Hz-60Hz) | 170 V – 265 V AC | |||||||||
| 1/8 rated power (230V/4ohm) | 4 A | 4.8 A | 6.2 A | 7.5 A | 10.5 A | 6 A | 7.5 A | 11 A | 10.5 A | 15 A | |
| Dimensions (WxHxD) | 483×88.9×310 mm – 19×3.5×12.2 inches | ||||||||||
| Weight (Net) | 8 kg – 17.6 lb | 8.5 kg – 18.7 lb | 8.6 kg – 18.9 lb | ||||||||
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™ and SSP™.
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.
• High performance 120dB 24 bit AD/DA 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: 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)
• DSP_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.
• High performance 120dB 24 bit AD/DA 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.
• GPIO Control Module: it has a general purpose input and output connector to interface with third party controllers like an alarm system. It permits to control the turn on and to report the operating status.