The 2 x 21” subwoofer features neodymium magnets with 6” voice coils driven by powerful Class D amplifiers. The large ports are designed to be fully symmetrical to the speakers, which means the back loading on the drivers is consistent and even with no port air turbulence.

The rear panel provides balanced analog and digital AES3 inputs and Ethernet connectivity for complete remote control over the fully-featured integrated DSP.

With the Firenze-KS7, gradient/cardioid configurations and end-fire arrangements are made easy with up to 2 seconds of input delay and frequency shaping. The Firenze-KS7 is an all-encompassing subwoofer that is capable of being employed as a single point source or in an arch array configuration.



Type : Active subwoofer 

Transducers : 2x 21” Neodymium magnet woofer with 5.31” voice coil 

Frequency Response (1) : 25 Hz – 120 Hz (-6 dB)   

Maximum SPL (2) : 141 dB peak

Coverage : Omni   

Connectors : Analog: 1x XLR (bal) input signal + 1x XLR (bal) parallel output

  •                      Digital: 1x XLR AES3 input

Control : Remote control with dedicated PC software via Ethernet 


Built-in DSP : Input gain, delay up to 2 s, Full parametric IIR filters (Peaking, Shelving, Hi/Lo pass, Hi/Lo Butterworth), 

                      FIR filter for digital beam steering Level and Temperature remote monitoring 


Type : 2-ch., switch mode, class D

Output power : 2x 3500 W @ 2 Ω 1% THD+N

Power consumption : 600 W @ 4 Ω load, Pink noise 1/8 rated power

Protections : Over Temp. (Power Limiting – Thermal Shutdown), Short Circuit/Overload Output Protection, Power Limiting, 

                     Clip Limiter/Permanent Signal Limiter, High Frequency Protection

Operating range : 100-240V AC, 50-60 Hz with PFC

Mains connector : powerCON with link inlet


Dimensions (W x H x D) : 1162 x 590 x 851 mm (45.7 x 23.2 x 33.5 in) 

Weight : 104.4 kg (230.16 lb) 

Material : Wood

Color : Black, White, Custom RAL 


IP Rating : IP53

Notes for data:

(1) With dedicated preset

(2) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 8 m then scaled at 1 m

New materials and design are introduced into existing products without previous notice.