The SP221 is an elegant self-powered sub low system that gets the maximum out of the minimum. The SP221 proves that a super sub cabinet doesn’t have to be heavy. A massive 13 layer plywood, optimally braced cabinet design loads two impressive neodymium magnet loudspeaker assemblies. Including the 2x2500 Watt ultra-light CCD amps the SP221 is an impressive featherweight of just above 100kg.
Dimensions are optimised to match international truckload size. Ergonomic, 12 point grip point layout, a combination of 8 castor positions, polyurethane coating, additional corner protection and multiple slide bars facilitate easy transport.
The SP221 will endow any kind of F.O.H. or distributed sound system with a rock solid foundation in the lowest audible octaves. The SALC (Single Audio-logic Level Control) speaker management is a proprietary RMS based gain riding circuit which maintains the tonal balance of the sound as perceived by the human ear. Especially at high levels. Additionally it protects the drivers from over excursion or overheating.
To match the desired cabinet dimensions with maximum efficiency in the lowest octave, state-of-the-art computer aided modelling techniques and acoustic calculation programs are used to precisely indicate the manifold reinforcing ribs and port tuning.
|2 x 21” Long stroke, high power, low weight neodymium design
|30-60Hz/FR switchable: Sub Mode/FR (ext. LP filter)
|Max. peak SPL @ 1m
Peak level at 1M under half space conditions using pink noise with crest factor 4 (12dB)
2x 2500W sine (SALC limited)
Specified at 4Ω
|30Hz, 2nd order
|Low pass 4th order
Fixed filter on request
|20 kOhms balanced, 10 kOhms unbalanced
|Hard-wired to input
|230V (other on request)
|50 / 60 Hz
|< 3000VA. DALC limited Ref. to continuous pink noise signal (12 dB crest factor within the specified range)
|S.A.L.C. (Single Audio Logic Control)
Additional descriptive data
|Cross grain laminated multiplex
|Weight (in kg)
Wheels not included
|Width (in mm)
|Height (in mm)
|Depth (in mm)
|Depth with wheels (in mm)
|IEC XLR-3 in/out
|Powercon in, powercon out
|Max operating temp.
|-10 to 40 C ambient