Tender Specification: XS-4 active 

18“ high performance subwoofer system in aligned reflex enclosure

Highly resilient 18“ long-stroke speaker in aligned bass reflex enclosure with precise and powerful subwoofer reproduction. Bass reflex construction. Multi-layered high-quality multiplex wooden enclosure with robust, black 2-K special texture, acoustic foam front cover with ball impact resistant protection grille, removable board with rollers (back) and transport top (front). Amplifier output: 1500W / ohms. Integrated digital signal processors (DSP) with these functions: 10-band parametric EQ, High-Pass-/Low-Pass-filter, delay, input mixing stage, Noisegate, compressor/ limiter and signal generator for optimal speaker protection. Controlling via Fohhn-Net.

Technical specifications:
components: 1x 18” long stroke
SPL max.: 132 dB
frequency range: 35 Hz - 130 Hz
weight: approx. 39kg
dimensions (W x H x D): approx. 59 x 60 x 68 cm
enclosure: multiplex birchwood
texture finish: black
front design: acoustic foam
protection grille: metal, ball impact resistant
handles: 4 on the side (milled in)
thread plate for distance piece: M20

amplifier output: 1500 watt / 8 ohms
amplification: 32 dB
input sensitivity: 0 dB V
input impedance: 10 kohms
frequency range: 20Hz – 20kHz
S/N ratio: >105 dBA

protective circuit: switch-on delay, soft start, impedance- and short-circuit protection, DC protect, temperature monitoring
remote control: Fohhn-Net, Fohhn Audio Soft
remote monitoring: temperature, protect, signals

controller: 2 digital signal processors, 8 independent limiters, selective 3-band limiting (bass/mid/high), band specific time constants, 56-bit double precision filter technology, AD/DA 24bit/48kHz

power supply: 195 V – 250 V AC 50/60 Hz
cooling: convection cooling, force cooling, if necessary temperature-controlled fan

connections: 2x XLR/jacks, 2x XLR Link jacks, 2x NL4 Neutrik Speakon Out, 2x Powercon (in & thru)

make: Fohhn Audio AG
type: XS-4 active