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HIGH-CURRENT AMPLIFIER WITH DSP
The Stealth Acoustics SA2400MKII is a high-current two-channel amplifier with powerful built-in digital signal processing functions suitable as a low distortion power source for Stealth Acoustics speakers, Stealth subwoofers, or other un-powered speakers and subwoofers. Intended for distributed audio, fixed installations, or home theater applications, the SA2400MKII mounts using the supplied removable rack ears in a standard 19” (482 mm) equipment rack requiring only two RU spaces (3-1/2” – 89 mm), or may stack with other free-standing components. The SA2400MKII delivers a solid 310 watts per-channel into an 8Ω load and 450 watts per-channel into 4Ω.
The SA2400MKII’s internal DSP functions may be programmed for each channel independently or together and include 11 bands of fully-parametric EQ, variable High and Low Pass filters with selectable slopes, fully-programmable limiter stage and delay functions. All parameters may be programmed using front panel controls or via a USB connected computer utilizing Stealth Signal Management System software (SSMS). Ver 1.1.3 – Download Here
For maximum flexibility integrating into any audio system, the SA2400MKII includes RCA unbalanced line level, balanced XLR line level, and phoenix speaker level inputs for each channel, all with “pass-through” output connectors. Line level pass through outputs may be programmed as either “pre” or “post” DSP feeds to facilitate extending DSP tuning to additional amplifiers. The speaker level input/pass-through connections allow the SA2400MKII to feed directly from full-range speaker lines, anywhere in the system and will track the speaker’s output level. A stereo optical input is provided for connecting digital sources to the amplifier. Inputs may be mapped to either channel and may be “mono-summed” via programming. The SA2400MKII amplifier output connections are via 5-way binding posts designed to accept heavy gauge speaker wires.
10 internal, remotely re-callable, read-write presets allow the amplifier to quickly change profile states for different modes of usage, or to load factory speaker optimization curves for Stealth invisible and environmental speakers and subwoofers. Users may store and recall unlimited amplifier profile files via the SSMS App. A selectable automatic turn-on feature activates the amplifier only when audio signals are present, or the 12V trigger function may be utilized to activate and deactivate the amplifier, along with other system components. The IR control functionality also allows for remote control of master volume and preset selection via most 3rd-party control systems. Quiet 8-stage cooling fans automatically engage as required. The front panel includes direct master volume and menu access controls as well as an LCD display window and dual clip indicators. 115VAC through 230VAC 50/60 input line voltages are automatically accommodated via the auto-sensing IEC power inlet. The Stealth Acoustics SA2400MKII amplifier is covered by a 2-Year manufacturer’s warranty.
SOFTWARE
STEALTH SIGNAL MANAGEMENT SYSTEM
Windows DSP PROGRAMMING SOFTWARE
FOR THE SA2400’S POWERFUL INTERNAL DSP TOOLS
EACH CHANNEL INDEPENDENTLY PROGRAMMABLE
- 11 BANDS FULLY-PARAMETRIC EQ
- FULL LIMITER STAGE
- PROGRAMMABLE HIGH AND LOW PASS FILTERS WITH SELECTABLE SLOPES
- 100 Ms DELAY
- BUILT-IN PINK NOISE GENERATOR
Preset 1 = LR6G optimization (stereo)
Preset 2 = LR8G optimization (stereo)
Preset 3 = LR3G optimization (stereo)
Preset 4 = LRX-85 optimization (stereo)
Preset 5 = LRX-83 optimization (stereo)
Preset 6 = StingRay 6 optimization (stereo)
Preset 7 = StingRay 8 optimization (stereo)
Preset 8 = B22G/B30G/StingRay 430/ Image Sub Subwoofer mode (both channels configured for
subwoofer use)
Preset 9 = Image III optimization (stereo)
Preset 10 = Full Range / Subwoofer mode (channel 1 StingRay 6 / channel 2 subwoofer)
Specifications
Rack Mountable
(2) RU spaces: 3-1/2” (89mm)
Product Specifications
Power Output (per channel – both channels driven)
310 watts @8Ω < 0.05 THD
450 watts @4Ω < 0.05 THD
Frequency Response
20Hz-50kHz (+1/-3dB)
Total Harmonic Distortion
< 0.05 @ 460 watt @4Ω / 1 kHz
Signal to Noise Ratio
>105 dB / A weighting 20Hz-20kHz
Analog Input Sensitivity
-1dBV for output of 312.5W / 8Ω
Maximum Voltage Gain
36 dB / 8Ω
Crosstalk
>85dB
System Impedance
8Ω Nominal – 4Ω Minimum
Shipping Weight
38 lbs. (17.2 kg)
Dimensions
Width: 19” (482 mm)
Height: 3-1/2” (89 mm) – without feet
Depth: 15-3/4” (400 mm)
Maximum Full Output Current Draw
1080 watts @115V / 8 Ω (100Hz sine wave – both channels driven)
1560 watts @115V / 4 Ω (100Hz sine wave – both channels driven)
Average Output Current Draw
1/8 Audio Power = 135W (1.17A) Average @115V / 8Ω (normal audio program)
1/4 Audio Power = 270W (2.34A) Average @115V / 8Ω (heavy bass audio program / subwoofers)
1/8 Audio Power = 195W (1.69A) Average @115V / 4Ω (normal audio program)
1/4 Audio Power = 390W (3.39A) Average @115V / 4Ω (heavy bass audio program / subwoofers)
Heat Dissipation
849 BTU / Hr
Amplifier / Load Protection
Full short circuit, open circuit, thermal, ultrasonic and RF protection
On/Off muting with auto volume ramp up on power-up
DC fault power supply shutdown
Fixed high-pass filter @18Hz
Stable into reactive or mismatched loads
Features and Functions
Flexible Inputs with Pass Through
-
Phoenix connector speaker level inputs / outputs
-
RCA unbalanced line level inputs / outputs
-
XLR balanced line level inputs / outputs
-
Optical Digital input
-
(stereo TOS – routable, no pass through output)
Amplifier Output Connectors
-
5-way binding posts (each channel)
Front Panel LCD Display
- Input level readout Programming /
- parameter display Dimming function (3 levels)
USB Connection
- For Computer programming of DSP features via SSMS software
Auto On / Standby Function
- Switch selectable “On” or “Auto”
Fan Cooled
- Automatic – 8 speed stages