12sHO

High Output Powered Studio Subwoofer

Large and powerful nearfield studio monitors require a subwoofer that can achieve high sound pressure levels—and KRK’s 12sHO is a powerful, sonically pure addition to any studio setup. Whether for stereo or surround formats, the 12sHO subwoofer reproduces low-frequency detail as well as the LFE channel’s demanding bass content. These challenging applications place demands far exceeding the capabilities of traditional low frequency drivers and power amplifiers, so KRK developed the 12sHO (HO for “High Output”) as the industry solution for all types of demanding mix situations.

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12sHO Features

12" Woven Kevlar® High Performance Woofer
Bass Extension to 29Hz with a Max SPL of 123 dB
Quad-vented, Front-firing Bass Port
400W Class A-B Power
92 dB Signal to Noise Ratio
Combo XLR-1/4"" TRS Inputs with XLR Outputs
Dedicated LFE Channel with Combo XLR-1/4" TRS Input
Sweepable Crossover Control
Bypass Foot Control included
Reinforced MDF Enclosure

Reviews

The 12sHO will extend the low frequency range of any brand of monitors down to 29Hz in an accurate and effortless way and at any listening volume. I especially liked the lighted bypass footswitch jack and cable--a small thing but useful for some of my clients who are new to low frequency extension.

Barry Rudolph

I have used many other subs before but nothing like this one. If you use this sub with a great pair of monitors like the KRK ROKIT 8 or even the KRK VXT8 you will get the best sound system that you can have to mix with. It is truly the best sub you can have for your home studio.

Audio Fanzine

A well-designed collection of subs to cover most studio needs, with some useful features, decent, low-distortion volume output and good low-frequency response.

MusicTech

KRK Subwoofers Compared	S8.4	S10.4	S12.4	12sHO
Configuration	Front Loaded, Vented Subwoofer	Front Loaded, Vented Subwoofer	Front Loaded, Vented Subwoofer	Front Loaded, Vented Subwoofer
System Type	Active Subwoofer	Active Subwoofer	Active Subwoofer	Active Subwoofer
Low-Frequency	8" Glass Aramid Composite Woofer	10" Glass Aramid Composite Woofer	12" Kevlar® Aramid Composite Woofer	12" Woven Kevlar® High Performance Woofer
Frequency Response	34.5Hz - 133Hz	30Hz - 110Hz	26Hz - 97Hz	29.2Hz - 160Hz (L/R inputs), 29.1Hz - 211Hz (LFE input)
Max Peak SPL	112.8 dB	117.2 dB	119.9 dB	123 dB
Amplifier	Class D	Class D	Class D	Class A/B
Power Output (Continous)	109 Watts @ 1% THD+N @ 46Hz	160 Watts @ 1% THD+N @ 44Hz	220 Watts @ 1% THD+N @ 44Hz	400 Watts @ 1% THD+N @ 100Hz
Signal to Noise Ratio	92 dB	92 dB	92 dB	92 dB
Amplifier Distortion (THD + N)	≤ 0.1% @-3dB Of Max Power Output 35Hz-133Hz	≤ 0.12% @-3dB Of Max Power Output 31Hz-110Hz	≤ 0.3% @-3dB Of Max Power Output 29Hz-97Hz	≤ 0.1% @-3dB Of Max Power Output 20Hz-200Hz
Input Impedance	9.4 KΩ Balanced, 9.2 KΩ Unbalanced	9.4 KΩ Balanced, 9.2 KΩ Unbalanced	9.4 KΩ Balanced, 9.2 KΩ Unbalanced	10 KΩ Balanced or Unbalanced
Ground Lift	On/Off	On/Off	On/Off	On/Off
HPF Bypass	With Footswitch Only	With Footswitch Only	With Footswitch Only	With Footswitch Only
Footswitch	Optional	Optional	Optional	Included
Indicators	Power/Standby	Power/Standby	Power/Standby	Power, Protection, Limiter
Input Connectors	XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch	XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch	XLR L/R, 1/4" TRS L/R, RCA L/R, 1/4" Footswitch	Balanced XLR for Left & Right inputs
LFE Input	N/A	N/A	Balanced TRS	Balanced XLR
Output Connectors	XLR L/R, 1/4" TRS L/R, RCA L/R	XLR L/R, 1/4" TRS L/R, RCA L/R	XLR L/R, 1/4" TRS L/R, RCA L/R	Balanced XLR for Left & Right
AC Power Input	100VAC-240VAC	100VAC-240VAC	Selectable 110V-120V / 220V0240V	Selectable 110V-120V / 220V0240V
Enclosure	15 mm and 18 mm Reinforced MDF	15 mm and 18 mm Reinforced MDF	18mm Reinforced MDF	18mm & 36mm Reinforced MDF
Finish	Black Vinyl Wrap, Baffle - Black Paint	Black Vinyl Wrap, Baffle - Black Paint	Black Vinyl Wrap, Baffle - Black Paint	Textured Paint
Hardware	EVA Isolation Pad	EVA Isolation Pad	EVA Isolation Pad	N/A
Dimensions (H x W x D)	(H x W x D): 11" (279 mm) x 16.125" (410 mm) x 11.5" (292 mm)	(H x W x D): 13.4375" (341 mm) x 18.875" (479 mm) x 12.1875" (310 mm)	(H x W x D): 16.375" (416 mm) x 23.875" (606 mm) x 14.375" (365 mm)	20" (508 mm) X 20" (508 mm) X 22.48" (571mm)
Weight	26.5 lb. (12 kg.)	35 lb. (15.88 kg.)	62.5 Lb. (28.3 kg.)	109.7 lb. (49.7 kg)
Downloads	Manual (EN,FR,ES,DE,JA,ZH)	Manual (EN,FR,ES,DE,JA,ZH)	Manual (EN,FR,ES,DE,JA,ZH)	Cutsheet Manual (EN, FR, ES) Manual (ZH)
Resources	KRK Subwoofer Placement & Setup Guide \| Subwoofer test tones

12sHO

12sHO Features

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