PreSonus Eris Sub8 Powered Studio Monitor Subwoofer

E Sub 8

36 month interest free financing**

Offer available through 7/12/22. Equal monthly payments required for 36 months.
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PreSonus Eris Series 8" 100W Active Subwoofer Speaker

PreSonus Eris Sub8 active subwoofer features an 8" front-firing glass-composite woofer, 100W power, built-in tuning controls, stereo 1/4" TRS and RCA inputs and outputs, a variable low pass filter for creating a seamless crossover transition and a switchable 80Hz high pass filter to optimize performance with satellite speakers. Ideally suited to complement compact media reference and studio reference monitors without overshadowing them, Eris Sub8 provides robust tuning controls and delivers smooth, low-frequency transients.

  • 8" front-firing paper-composite low-frequency transducer with high-elasticity rubber surround
  • Class AB amplifier: 100W peak (50W RMS) power
  • Input gain control: -30 dB to +6 dB, continuously variable
  • Continuously variable low pass filter: 50Hz to 130Hz
  • Defeatable high pass filter removes frequency content below 80Hz from the full-range signal sent from Eris Sub8 outputs to the main speakers
  • Left and right balanced 1/4" TRS and unbalanced RCA main inputs
  • Left and right balanced 1/4" TRS and unbalanced RCA pass-through outputs for connecting satellite speakers
  • Polarity invert switch
  • Protection: RF interference, output-current limiting, over-temperature, turn-on/off transient, subsonic filter, external mains fuse
PreSonus Eris Sub8 Subwoofer in studio setting sitting on floor next to desk

The single best subwoofer you can get to put a little boom in your room, Eris Sub8 is the first subwoofer to join the Eris line and complements the voicing and frequency response of Eris studio monitors. This surprisingly loud sub drops down to a molar-rattling 30Hz, allowing you to rock harder and produce better mixes since you'll be hearing an accurate representation of your work.

detail image of PreSonus Eris Sub8 Subwoofer back panel showing stereo quarter-inch TRS and stereo RCA audio inputs

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 even invert the polarity.

detail image of PreSonus Eris Sub8 Subwoofer back panel showing stereo quarter-inch TRS and stereo RCA audio inputs
detail image of PreSonus Eris Sub8 Subwoofer back panel showing low pass filter control knob

Most importantly, you get a high pass filter and a low pass crossover control that ensures your Sub8 starts working at the precise low-frequency point where your main monitors stop working. This makes sure you avoid the flubbery, smudged, low-end mess that one hears in redundant, duplicate, redundant bass reproduction that occurs without a crossover.

More Information
MPN E Sub 8
Manufacturer PreSonus
Condition New
Included from Manufacturer Power cable
Speaker Application Subwoofer
Active/Passive Active
Enclosure Material MDF
Enclosure Covering Vinyl-laminated
Woofer/Low Frequency 8" front-firing paper-composite low-frequency transducer with high-elasticity rubber surround
Frequency Response 30Hz – 200Hz
Power 100W peak (50W RMS)
Connectors Dual balanced stereo 1/4" TRS inputs
Dual unbalanced stereo RCA inputs
Dual balanced stereo 1/4" TRS pass-through outputs
Dual unbalanced stereo RCA pass-through outputs
EQ Continuously variable low pass filter: 50Hz to 130Hz
Defeatable 80Hz high pass filter
Protection Circuit Yes
Height 9.875"
Width 12.5"
Depth 13"
Product Weight 15 lb

PreSonus Limited Warranty

PreSonus Audio Electronics, Inc., warrants ULT and AIR loudspeakers to be free of defects in materials and workmanship for a period of six years from the date of original retail purchase. This warranty is enforceable only by the original retail purchaser. To be protected by this warranty, the purchaser must complete and return the enclosed warranty card within 14 days of purchase.

During the warranty period PreSonus shall, at its sole and absolute option, either repair or replace, free of charge, any product that proves to be defective on inspection by PreSonus or its authorized service representative. To obtain warranty service, the purchaser must first call or write PreSonus at the address and telephone number printed below to obtain a Return Authorization Number and instructions of where to return the unit for service. All inquiries must be accompanied by a description of the problem.

All authorized returns must be sent to the PreSonus repair facility postage prepaid, insured, and properly packaged. PreSonus reserves the right to update any unit returned for repair. PreSonus reserves the right to change or improve the design of the product at any time without prior notice.

This warranty does not cover claims for damage due to abuse, neglect, alteration, or attempted repair by unauthorized personnel and is limited to failures arising during normal use that are due to defects in material or workmanship in the product. Any implied warranties, including implied warranties of merchantability and fitness for a particular purpose, are limited in duration to the length of this limited warranty. Some states do not allow limitations on how long an implied warranty lasts, so the above limitation may not apply to you.

In no event will PreSonus be liable for incidental, consequential, or other damages resulting from the breach of any express or implied warranty, including, among other things, damage to property, damage based on inconvenience or on loss of use of the product, and, to the extent permitted by law, damages for personal injury. Some states do not allow the exclusion of limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This warranty gives you specific legal rights, and you may also have other rights, which vary from state to state.

This warranty only applies to products sold and used in the United States of America.


You may have seen the images of ships stacking up on the west coast, waiting for their turn to port. This combined with the increased demand for domestic shipping of products from all industries across our nation has resulted in a rapidly fluctuating climate for receiving and shipping products. While we do our best to offer accurate shipping estimates, please remember that complications can arise which may be beyond our control. Know that Kraft Music is here to assist in any way that we can.

  • Ground shipping is FREE for all orders $99 and up.
  • Our central, midwest location ensures fast delivery times.
  • See below for transit day estimates. Please note, these are estimates and are not guaranteed.

Though forcasting shipping times has become increasingly difficult, general FedEx package estimated transit days are as follows:

  • Upper Midwest: 1-3 days
  • Central US, South East US, and East Coast: 2-4 days
  • West Central US: 3-5 days
  • West Coast: 4-6 days
  • Alaska & Hawaii: 7+ days
All transit times are based in business days. Please allow 7-10 business days for most freight shipments. Business days are Monday through Friday and do not include public holidays and weekends (Saturday/Sunday.) For questions regarding estimates to your specific location, please contact us at [email protected] or 800-783-3368.