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Open-Box SB122 12" 400W Passive Subwoofer Black

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580079 004001000
Product Price $421.52
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New $479.00

With the Electro-Voice SB122, the quest for a compact, lightweight, powerful, and affordable subwoofer is finally over. The SB122 is possibly the sma...Click To Read More About This Product

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(Open Box) Very compact and lightweight... yet deceptively powerful.

With the Electro-Voice SB122, the quest for a compact, lightweight, powerful, and affordable subwoofer is finally over. The SB122 is possibly the smallest, most powerful subwoofer on the planet. It packs 400-watt continuous-and 1,600-watt peak--power handling into a compact 33 lb. package. It also employs the new EVS12SB 12", long-excursion woofer for outstanding low-frequency response.

Aesthetically, the SB122 sports a half-face grille with grille cloth, and a stylized EV logo. The rich feature set includes a top-mounted pole cup, ergonomic carrying handle, large port, and a built-in low-pass filter that eliminates the need for external processing. Of course, external processing is still an option for professionals seeking greater overall system performance gains. And, with a price that makes it all seem too good to be true, SB122 is sure to make you rethink what a compact sub can be.

The Electro-Voice SB122 bass module is a very compact, lightweight subwoofer system that is designed to add bass enhancement to EV Sx and Zx Series speaker systems. The SB122 combines the advantages of a long-throw 12" woofer with a strong, lightweight composite enclosure. The large vent provides less vent compression and turbulence for increased low frequency output. The EVS12SB cast frame transducer created for the SB122 uses the same motor and suspension design as the EVS18S used in EV's larger systems. With nearly 2" of peak-to-peak excursion capability, this is literally a 12" with the heart of an 18".

An integral low-pass filter allows the SB122 to be directly connected in parallel with a full-range speaker for truly impressive low-end output without the need for an additional amplifier and processor. The filter is transparent below 160Hz, allowing the SB122 to be used as an independent subwoofer in bi-amp applications without the need to disable the internal filter. For maximum output in bi-amp applications and protection of the full-range system when running in parallel, a 40Hz Hi-pass (subsonic) filter is recommended. The SB122 features a convenient pole-mount socket on top of the enclosure to allow a small full-range speaker such as the Zx1 or Sx80 to be mounted on the optional ASP-1 accessory pole, resulting in a compact system than sounds much bigger than it looks.

  • Only 33 lb./15.0 kg
  • Integral handle
  • 400-watt continuous, 1,600-watt peak power handling
  • Parallel Neutrik Speakon high current input connectors
  • Cast frame EVS12SB 12" high excursion subwoofer driver
  • Integral low-pass filter”No additional amplifier or processor needed

Add booming low end with the compact SB122 sub.

  • Sensitivity 1W/1m: 99 dB
  • Max. SPL / 1m (calc): 131 dB
  • System Power Handling (continuous/program/peak): 400/800/1600 Watts
  • LF Transducer: EVS12SB
  • Color: Black
  • Flying: Optional
  • Input Connections: Parallel Neutrik NL4
  • Chassis Size: 12"
  • Internal Crossover: Yes
  • Speaker Type: Subs
  • Weight Net: 33.07 lb (15 kg)
  • Dimensions (HxWxD): 23.07" x 16.89" x 12.28" (586 x 429 x 312 mm)

Review Snapshot

by PowerReviews
Electro-VoiceSB122 12" 400W Passive Subwoofer

(based on 6 reviews)

Ratings Distribution

  • 5 Stars



  • 4 Stars



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  • 1 Stars



Reviewed by 6 customers

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(7 of 8 customers found this review helpful)


Great mobile low end

By Harddrive

from Phoenix, AZ

Comments about Electro-Voice SB122 12" 400W Passive Subwoofer:

Every working band would love to have massive earth shaking bass cabs. But after a years of hauling around a pair of old-school 2x18 cabs and running them on 25% volume, we downsized and couldn't be happier. For just about any local venue a set of these adds plenty of kick and clean bass. I also use them for acoustic shows and it makes all the difference in the world. For the band we bi-amp them with a set of SX-500+ EV mains, but have recently started just using a set of 15" EV Eliminator Monitors for mains instead, saving the big speakers and subs for outdoor/large venue shows. It sounds small, but we are a loud rock band, (probably too loud sometimes) and for your average club or bar show this setup gives us plenty of volume and headroom.We use a QSC PLX 3402 (900+ watts/channel at 4 ohms)with one side for mains with the 100hz high pass filter on so most of the the bass and kick aren't going through the mains keeping them crystal clear for vox, and the other channel for the subs with full range... using the built in crossovers in the SB122s. Very simple to move and set up and it sounds great. And the best part is it all easily fits in the back of my Pathfinder, with room for a Marshall half-stack and guitars to spare. And when the show's over you can easily grab a SB122 like a carry-on bag in each hand and walk out the door. You can't go wrong with EV. If you like mid-rangy mud in lead-lined cabinets get JBL.. (Peavey with a price tag if you ask me.) Otherwise, go electro. You won't regret it.

(6 of 7 customers found this review helpful)


Small but Powerful

By Blackbox

from Tampa Bay, FL

About Me Pro Audio / DJ, Tech Director, Tech Savvy

Verified Buyer


  • Good Power Output
  • Great Sound Quality


  • NONE

Best Uses

  • DJ / Mixing
  • Theatrical

Comments about Electro-Voice SB122 12" 400W Passive Subwoofer:

Using for DJ System & Live Sound Applications. Bought two to compliment my EV 500's - but am using a separate amp to run them. I talked with EV directly about the claim that you don't need an additional amp, that you can run the SB122 in parallel with your regular PA speaker, because it has a low pass filter - but EV even said it is better to run the subs on a separate amp, as the ohms are not supposed to drop below 6 (two 8 ohm speakers in parallel, drop the ohms to 4). Have owned EV products for 15 years now, and am very happy with the quality and sound. If you need that (dreaded) heavy bass "Hip-Hop" sound, these are not the best choice; if you need quality subs that will nicely compliment your PA speakers without overpowering them, then the SB122 is a perfect choice.

  • Was this a gift?:
  • No

(6 of 6 customers found this review helpful)


Small subs that rock

By Scottenj

from Georgetown, MA

See all my reviews

Comments about Electro-Voice SB122 12" 400W Passive Subwoofer:

I own four of these that I drive with a Crown XTI4000. I was working outdoors at a fair ground a ocuple of years ago and people kept coming up to me asking where teh array of 18" subs was. They couldn't believe that four of these little subs were cranking out that much bass. I also love that you can easily carry one in each hand.

(6 of 6 customers found this review helpful)


Little Train that Could

By Franky Fingers

from Meriden CT

See all my reviews

Comments about Electro-Voice SB122 12" 400W Passive Subwoofer:

How much easier could it be? 35 pounds each,,carry one in each hand and sling them around with ease. Pole mounts on top for the smaller mains or stand alone as your subs. 400 watts RMS won't fill an arena but will do fine for the smaller to med size gigs with a LOT less wear and tear on your back. They'd also do well as a compact bas rig setup. 2 on each side of a band should thump just fine. Crossed over a little high for me (160hz) but if you have an external x-over, set them up for around 100hz or so.

(4 of 4 customers found this review helpful)


Thump City

By Rudedog-gWrft

from Nashville

See all my reviews

Ask me a question

Comments about Electro-Voice SB122 12" 400W Passive Subwoofer:

Just bought one of these from MF to use as kick drum monitor along with a Yamaha S115V. I bascially mix my drums and run one direct line to an EV Q66 amp bridged into this sub using the sub's 160hz internal x-over the another to the board which powers my Yamaha S115V stage monitor mix. Let me tell you, at 35lbs there is nothing made that can touch this sub. It is power hungry and would suggest an amp of at least 600 watts to power it (Q66 amp is a match made in heaven coupled with ND868 kick drum mic) I have used this setup twice now, once in a small to med size club and once in a larger venue and both times I had people asking me where the 2 18 cabinets were..I pointed to the SB122 and said one of these baby! The SB121 EV produced a few years back pales in comparison to this jewel. Now the bass player wants to tap into my onstage mix and use this sub as well. Looks like I will buy another one and run them in parallel at 1700 watts. For a drummer this is the best possible kick drum monitoring setup made. I tried the Bass Shaker thing and it was ok but this sub is the shin dizzle. Reproduces my 24" kick drum perfectly and mates well with the EV ND868 mic. If you are a drummer this is not to be passed up!

(4 of 5 customers found this review helpful)


This is the subwoofer you've been searching for.

By SnG

from Hanson MA

See all my reviews

Comments about Electro-Voice SB122 12" 400W Passive Subwoofer:

I was SO impressed, I bought two of them and sold my 18" subs.

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