Studio Sub 18

Studio Sub 18 Subwoofer


Subwoofer Pros’ Studio Subs are designed to easily integrate into ANY listening system, with even and accurate low frequency reproduction, extremely low distortion, and extended frequency response all the way down to 8Hz.  They feature a front firing, sealed cabinet design, with an integrated 700w amplifier and dynamic analog signal processing.  Studio Subs are optimized to be blended and used with the mains in full range, however the built-in crossover may be used as desired.  The Studio Sub 18 pairs ideally with larger, mid/far field monitors.  Subwoofer Pros’ Studio Subs are 100% made in USA, with USA sourced parts, for ultimate quality and reliability even in extended listening sessions at high SPL.


What makes Subwoofer Pros different?

Many other manufacturers create subwoofers that ideally match only to the same brand or a specific series of main speakers, making them unsuitable for anything else.  Subwoofer Pros’ subs are tuned for accurate and even low frequency response, just like a full range monitor.  Rear controls are kept to a minimum with a fixed crossover point for ease of use and simple integration into ANY system, without any headaches.


The Studio Sub series focuses on the 95Hz to 8Hz band and adds dynamic signal processing, resulting in ultra low distortion even at high SPL.  Most other subs can only go down to 20-30Hz at best and typically begin to produce distortion at high listening levels.  The built-in dynamic electronics provide uniform response at every frequency, reproducing each note with the same emphasis.  Many subs use ports to achieve more low end output, resulting in an uneven response that does not translate.  Subwoofer Pros subs are optimized to be blended with mains in full range mode, to avoid phase problems at a crossover point in a very audible region.



A single Studio Sub 12 will pair nicely with smaller nearfield/meter bridge style monitors while the Studio Sub 18 pairs well with mid/far field monitors.  Both the 12” and 18” sound very similar with the main difference being max SPL output.  A single Studio Sub 12 offers up to 108dB SPL max 1 meter; our single Studio Sub 18 offers 114dB SPL max at 1 meter.  Slave subs can be added when greater SPL is required.


Our subs offer flexible input/output options:

  • Total of 6 inputs allow the combining of all bass information up to a 5.1 system
  • “LFE” XLR input with its own level control
  • 5 input/output channels of analog Bass Management on board with built-in 95Hz low pass/High pass on the 12” and 60Hz low pass on the 18”.  One can use any or all of the 5 channels of bass management as primary inputs.


While the default setting is at 8Hz for optimum performance, the Studio Sub LF cutoff can be set to 20Hz via a rear switch.  This is handy quick setting for playback of recordings with excessive low frequency noise.


Studio Subs can be scaled in multiples to fit any SPL need or improve room behavior.  With a unique Slave output, dedicated Slave units can be daisy chained to create a larger system. Every time you double the amount of subs, you can get up to an additional 6 dB SPL.  All settings on the “main” sub will automatically apply to all connected Slave subs.





Enclosure 18mm 13 Ply Birch Plywood
Finish Black Ro Tex™ True water born environmental finish
Grill Black cloth grill
Low Frequency Component EL-18R Long Throw Transducer, 18” Cone
Bass Managed Inputs/Outputs, High-Pass Crossover Five High Pass XLR, 10K Ohms, -6dB at 95Hz with Gain Control
LFE Input XLRF with Gain Control
Input Impedance 15K Ohms
Input CAL Sensitivity +4 dBu
Maximum Continuous Amplifier Power 700 W into 4?
Max SPL 113dB SPL in half space at 40Hz
Overload Protection Internal Dynamic Filter™ protection
LED Indicator Green = Power ON, Red = Dynamic Filter threshold exceeded
Mains Voltage Requirements 115V or 230V auto switched internally
Frequency Response ±3 dB 8 Hz to 60 Hz Infra™ system
Low Frequency Limit 8 Hz or 20Hz via switch
Polarity A positive asymmetrical signal applied to pin 2 will result in a positive asymmetrical acoustical pressure
Dimensions 23.5”h x 21.25”w x 18.5”d
Weight 75 lbs (34 kg)