Description
The Stealth Acoustics SA255 is an integrated monaural subwoofer amplifier/crossover system designed as a low distortion power source for Stealth Acoustics invisible subwoofer panels or other un-powered subwoofers. The SA255 can also be used for full range speakers when the low pass filter is off. Intended for whole house audio or home theater bass applications, the SA255 may stack with other components or mount in a standard 19” equipment rack requiring two RU spaces (3-1/2”) with the provided removable rack mount ears. The SA255 delivers a solid 250 watts into an 8Ω load and 350 watts into 4Ω. A variable low pass, 18db per octave filter allows for infinite crossover points from 50Hz to 100Hz.
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 and six power output monitor LED’s. Rear power controls consist of filter bypass switch for full range operation, no signal mute switch and 3-position panel graphics control switch. 115VAC and 230VAC input line voltages are selectable, via a rear panel switch.
The Stealth Acoustics SA255 subwoofer amplifier is covered by a 2-Year manufacturer’s warranty.
Product Features and Functions:
Rack Mountable
(2) RU spaces: 3-1/2” (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
Phase 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
Full / half or off brightness settings