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Toll Free Number: 1-800-121-8625
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Showroom: +91-22-23644258
Store Hours: Mon-Sun 10AM To 8PM
Email: ashish@avenuesound.in


Avenue Sound
Shop No. 5, Mauli CHS Ltd., Sector 50 (E),
Seawoods, Nerul, Navi Mumbai – 400706
Toll Free Number: 1-800-121-8625
Mobile: +919930885877
Showroom: +91-22-27715878
Store Hours: Mon-Sun 10AM To 8PM
Email: ashish@avenuesound.in

Rythmik Audio F18

Rythmik Audio F18


18″ Sealed Audiophile Subwoofer



F18 is our largest single driver sealed subwoofer to meet the needs for a high power home theater solution that retains the dynamic, accurate, and deep bass that we have become known for. Its max output at 20hz is at least 8db higher than that of our 12″ sealed model F12 and more than 11db higher than our competitior’s 12″ model SB measured by data-bass.com. The amplifier is based on Hypex audiophile class-D module. With the combination of the servo feedback and stiff aluminum cone, we have achieved lower distortion than competitor’s 18″ servo subwoofers (DD18+) with the same or even higher maximum SPL output from 10hz to 100hz , as tested at ata-bass.com. In fact, F18 has recorded the lowest THD numbers at the maximum SPL output than any other subs tested.


  • Patented Direct Servo technology
  • 18″ black anodized aluminum high excursion driver
  • Solid and very inert enclosure
  • Bass extension controls allowing adjustment of bass extension and excursion control
  • Selectable 12/24 db/octave crossover filter slope
  • Balanced XLR connections for professional use (XLR version option)
  • Parametric EQ


Amplifier: 900W RMS Hypex class-D patented servo controlled
Frequency Response: 14 – 200 Hz (0db/-2db) with LFE inputs
10 – 250Hz (+/-3db) with LFE inputs
14 – 90 Hz (-2 dB @ 14 Hz) with LINE IN inputs
Crossover slope: Selectable 12 or 24 dB / octave (PEQ and XLR versions)
Crossover range (Low pass): 25 – 100Hz
Phase response: 90 degrees phase shift at 20 Hz 
Phase adjustment: 0 – 180 degrees continuously variable
Dimensions: 20-1/2″(W) x 20-1/2″ (H )x 21″(D) – (23″ D with grille and heatsink)
Shipping Weight: 133 lbs 
Finishes: Available in black oak and black matte vinyl


Warranty: 5 years warranty on driver and 3 years on electronics

Additional information

Weight 65 kg

Rythmik Audio


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