670R Double 15″ Sub


The Ramsdell Pro Audio 670R is a low-profile double 15” subwoofer. This 14-inch-tall sub puts 4,000 Watts of program power into a compact space underneath a stage or any tight space. The 670R enclosure is designed for high output and low frequency program down to 40 Hz. The dual 15” woofers have 4” voice coils with 13mm of excursion in each direction. The enclosure uses a proprietary internal design to maximize desired results. This combines for a subwoofer with a balance of high output, and punchy response in a reduced-height form factor.


System TypeQuasi 5th Order Vented Bandpass
Active or PassiveActively Crossed from 38 to 80Hz
Program Power (Watts)2000W RMS / 4000W Program
Nominal Impedance (Ohms)4
Sensitivity (dB @ 1 W/1M)99 dB
Max SPL (dB)134 dB
Frequency Response (Hz +/- 3dB)38-300Hz
Crossover Frequency80 Hz and below
Driver Configuration2 x 15″ Woofers
LF Driver(s)Two 15″ woofers with 4″ voice coils
LF Program Power (Watts)2000 W RMS/ 4000 W Program
LF Impedance (Ohms)4 Ohm
InputsNL4 Speakon or Barrier Terminals
Inputs Speakon Neutrik 4 PinOptional
Enclosure MaterialsMulti-Ply Baltic Birch Plywood
Grille16 GA Perforated Steel
Finish/CoveringBlack Durablast Coating
Optional FinishOther Colors Available
Dimensions (DWH,inches)14 x 33 x 36 inches
Dimensions (DWH, cm)35 x 84 x 91 cm
Weight (lbs/kgs)165 lbs/ 75kg