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.


State-of-the-art touring systems



  • Type:  

    Active subwoofer

  • Transducers:  

    2x 21" Neodymium magnet woofer with 5.31" voice coil

  • Frequency Response:  

    25 Hz - 120 Hz (-6 dB)

  • Max SPL:  

    145 dB peak

  • Coverage:  


  • Remote Control:  

    Remote control with dedicated PC software via Ethernet

  • Connectors:  

    1x XLR (bal) input signal
    1x XLR (bal) parallel output
    1x XLR AES3 input

Digital Signal Processor

  • Built-in DSP:  

    Input gain, delay up to 2 s,
    Full parametric IIR filters (Peaking, Shelving, Hi/Lo pass, Hi/Lo Butterworth),
    Level and Temperature remote monitoring

Handling and Finishes

  • Dimensions (W x H x D):  

    1162 x 590 x 851 mm (45.7 x 23.2 x 33.5 in) (3)

  • Weight:  

    104.4 kg (230.16 lb)

  • Material:  


  • Colors:  

    Black, White, Custom RAL


  • IP Rating:  



  • Amp Module:  

    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 True with link inlet

  • (1) With dedicated preset
  • (2) Maximum SPL is calculated using a signal with crest factor 4 (12dB) measured at 1 m.


Firenze-KS7 Datasheet

Ver 1.0

EASE & EASE Focus Data

Ver. 4.0

Firenze Certifications ver. 1.0

Ver. 1.0

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