PreSonus Eris Sub8 Compact Powered Studio Subwoofer
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ThePreSonus Eris Sub8is a compact, powered studio subwoofer designed to work with any set of studio monitors, especially the PreSonus Eris E3.5 or E4.5 full-range studio monitors. The surprisingly loud 100-Watt Eris Sub8 drops down to a molar-rattling 30Hz, allowing you to push plenty of volume and produce better mixes, as you'll be hearing an accurate representation of your work.
Thanks to robust configuration and I/O, you'll be able to tailor your Eris Sub8 configuration exactly to your mixing and listening needs. You can connect your existing monitors via 1/4" TRS or RCA, set the input level to your liking, and invert the polarity. Most importantly, you get a defeatable highpass filter that removes frequency content below 80 Hz from the full-range signal sent from the Eris Sub8 output to the main speakers.
A 100W Class-AB amplifier powers the front-firing 8" paper-composite woofer, which offers a frequency response of 200 Hz down to 30 Hz with a respectable 113 dB peak SPL. A variable input gain knob (-30 to +6 dB) and a continuously variable lowpass filter (50 to 130 Hz) helps you dial in the volume and low-frequency sweet spot.
Other notable features include a polarity-invert switch and protection circuits for RF interference, output-current limiting, over-temperature, turn on/off transient, subsonic filter, and an external mains fuse. The Eris Sub8 includes a power cord.
100 W Peak 50 W RMS
1 x 8" / 20.3 cm Composite Woofer
1 x Subwoofer: Class-AB Rated at 50 W RMS / 100 W Peak
30 Hz to 200 Hz
Maximum Sound Pressure Level (SPL)
Total Harmonic Distortion (THD)
Maximum Input Level
Phase Inversion 0 / 180°
Protections and Limiting
Driver Protection, Fuse, Output Current Limiting, Subsonic Filter, Thermal Limiting
Low-Pass at50 Hz High-Pass at80 Hz
2 x 1/4" TRS Balanced Female Analog Input 2 x RCA Unbalanced Female Analog Input 2 x 1/4" TRS Balanced Female Analog Output/Thru 2 x RCA Unbalanced Female Analog Output/Thru
AC Input Power
100 to 120 VAC, 50/60 Hz 220 to 240 VAC, 50/60 Hz
Dimensions (W x H x D)
9.8 x 11.6 x 12.8" / 24.9 x 29.5 x 32.5 cm
16.3 lb / 7.4 kg
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