Stealth Acoustics SA255-MKII Monaural, High-Current Amp

Additional Information

Description

Specification

Downloads

Stealth Acoustics SA255-MKII Monaural, High-Current Amplifier with LP Filter

The Stealth Acoustics SA255 is an integrated monaural amplifier with low pass filter designed as a low distortion power source for Stealth Acoustics wall or ceiling mounted, invisible subwoofer panels or other unpowered speakers. Intended for whole house audio or home theatre bass applications, the SA255 may stack with other components or mount in a standard 19" (482 mm) equipment rack requiring only two RU spaces or 3½" (89 mm). Removable rack mount ears are provided.

The SA255 delivers a solid 250 watts into an 8Ω load and 350 watts into 4Ω. A variable low pass, 18 dB per octave filter allows for infinite crossover points from 50Hz to 150Hz. A built-in automatic limiter stage minimizes system overloads. With a full complement of input and output connectors, the SA255 is easily integrated into any audio system. Inputs include RCA line level, balanced XLR line level, and phoenix connector speaker level, all with pass-through capability. The speaker level input/pass-through connections allow the SA255 to feed directly from full-range speaker lines, anywhere in the system.

The SA255’s amplifier output connection is via a 5-way binding post designed to accept heavy gauge speaker wires. A selectable automatic turn-on feature activates the amplifier only when audio signals are present. Other features include an internal, quiet, 8-stage cooling fan that automatically engages as required. Front panel controls include volume control, variable low pass filter, phase control, power switch, six power output monitor LEDs, and front panel graphics brightness control. Rear panel controls include a filter bypass switch for full range operation, no signal mute switch, ground lift switch, and power switch. Input line voltage is auto-sensed/selected and supports 115VAC and 230VAC. The Stealth Acoustics SA255 monaural amplifier is covered by a 2 year manufacturer’s warranty

Product Specifications
	Mono Power Output:	250 watts @ 8ohms < 0.05 THD \| 350 watts @ 4ohms< 0.05 THD
	Total Harmonic Distortion:	<0.05 @ 1 watt 4ohms / 100Hz
	Signal to Noise Ratio:	86 dB below rated output
	Crossover Section:	Low Pass Filter: 50Hz - 150Hz / 18 dB per octave (variable with bypass switch) High Pass Filter: 18Hz / 30 dB per octave (fixed)
	System Impedance	8ohms nominal - 4ohms minimum
	Current Draw:	6.2A @ 350W/4ohms – 115-230 VAC/50-60Hz
	Dimensions	Width: 19" (482 mm) with rack ears Height: 3½" (89 mm) without feet Depth: 13⅝" (346 mm)
	Finish:	Black anodized aluminum
	Shipping Weight:	32 lbs. (14.5 kg)
	Included Accessories	Removable power cord, removable rack ears
Product Features and Functions
	Rack Mountable:	(2) RU spaces: 3½" (89 mm) (Provided rack ears are removable)
	DC Protected:	Fixed high pass filter @ 18Hz
	Variable Low Pass Filter (with Bypass):	50 to 150Hz / 18 dB per octave
	Power Standby LED:	Red (blue when system is active)
	Auto On/Standby Function:	Switch selectable “on” or “off”
	Flexible Inputs with Pass Through:	Binding post speaker level inputs / outputs RCA line level inputs / outputs XLR balanced line inputs / outputs
	Amplifier Output Connector	5-way binding post
	Output monitor LED’s:	6 level readings
	Other:	Phase Switch Ground Lift Switch Built-in Automatic Limiter Low Pass Filter on/off Switch Fan Cooled Automatic - 8 speed stages 110v-60Hz and 220v-50Hz Input Voltages Dimmable Front Panel Graphics