Collegamento Casse Passive al Mixer

Ragazzi scusate la domanda ma davvero, anche leggendo le istruzioni, non capisco. Ho un discreto mixer, il Behringer UB2222FX. Vorrei acquistare delle casse passive che ho visto ad un ottimo prezzo in un negozio della mia città.
secondo voi posso collegarli al mio mixer o hanno bisogno di un amplificatore esterno?
ecco le caratteristiche principali
EURORACK UB2222FX-PRO
Ultra Low-Noise Design 22-Input 2/2-Bus Mic/Line Mixer with Premium IMP Mic Preamplifiers and 24-Bit Multi-FX Processor
(Discontinued)
* Ultra low-noise ULN design, highest possible headroom, ultra-transparent audio
* 8 new state-of-the-art, studio-grade IMP “Invisible” Mic Preamps with:
* - 130 dB dynamic range for 24-bit, 192 kHz sampling rate inputs
* - Ultra-wide 60 dB gain range
* - Lowest possible distortion 0.0007% (20 Hz - 20 kHz)
* Integrated 24-bit digital stereo FX processor with 99 great-sounding VIRTUALIZER presets including reverb, delay, chorus, compressor, tube distortion, vinylizer and more plus 1 kHz test tone generator
* Effective, extremely musical 3-band EQ with semi-parametric mid band plus switchable low-cut filter on all mono channels
* Inserts on each mono channel for flexible connection of outboard equipment
* 16 balanced high-headroom line inputs with +4/-10 level selection on stereo channels
* State-of-the-art 4580 operational amplifiers provide lowest noise and distortion—better than 4560 op amps
* 3 aux sends per channel: 1 pre fader for monitoring, 1 pre/post fader switchable for monitoring/FX applications, 1 post fader (for internal FX or as external send)
* Peak LEDs, mute, main mix and subgroup routing switches, solo and PFL functions on all channels
* 2 subgroups with separate outputs for added routing flexibility
* 3 multi-functional stereo aux returns with flexible routing
* Balanced main mix outputs with TRS and gold-plated XLR connectors, separate control room, headphones and stereo tape outputs
* Control room/phones outputs with multi-input source matrix
* Tape inputs assignable to main mix or control room/phones outputs
* Switchable +48 V phantom power for condenser microphones
* Long-wearing 60 mm logarithmic-taper faders and sealed rotary controls
* Internal switch-mode power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus lowest possible power consumption for energy saving
* Extremely rugged steel construction ensures long life even under the most demanding conditions
* Rack mount brackets included
secondo voi posso collegarli al mio mixer o hanno bisogno di un amplificatore esterno?
ecco le caratteristiche principali
EURORACK UB2222FX-PRO
Ultra Low-Noise Design 22-Input 2/2-Bus Mic/Line Mixer with Premium IMP Mic Preamplifiers and 24-Bit Multi-FX Processor
(Discontinued)
* Ultra low-noise ULN design, highest possible headroom, ultra-transparent audio
* 8 new state-of-the-art, studio-grade IMP “Invisible” Mic Preamps with:
* - 130 dB dynamic range for 24-bit, 192 kHz sampling rate inputs
* - Ultra-wide 60 dB gain range
* - Lowest possible distortion 0.0007% (20 Hz - 20 kHz)
* Integrated 24-bit digital stereo FX processor with 99 great-sounding VIRTUALIZER presets including reverb, delay, chorus, compressor, tube distortion, vinylizer and more plus 1 kHz test tone generator
* Effective, extremely musical 3-band EQ with semi-parametric mid band plus switchable low-cut filter on all mono channels
* Inserts on each mono channel for flexible connection of outboard equipment
* 16 balanced high-headroom line inputs with +4/-10 level selection on stereo channels
* State-of-the-art 4580 operational amplifiers provide lowest noise and distortion—better than 4560 op amps
* 3 aux sends per channel: 1 pre fader for monitoring, 1 pre/post fader switchable for monitoring/FX applications, 1 post fader (for internal FX or as external send)
* Peak LEDs, mute, main mix and subgroup routing switches, solo and PFL functions on all channels
* 2 subgroups with separate outputs for added routing flexibility
* 3 multi-functional stereo aux returns with flexible routing
* Balanced main mix outputs with TRS and gold-plated XLR connectors, separate control room, headphones and stereo tape outputs
* Control room/phones outputs with multi-input source matrix
* Tape inputs assignable to main mix or control room/phones outputs
* Switchable +48 V phantom power for condenser microphones
* Long-wearing 60 mm logarithmic-taper faders and sealed rotary controls
* Internal switch-mode power supply for maximum flexibility (100 - 240 V~), noise-free audio, superior transient response plus lowest possible power consumption for energy saving
* Extremely rugged steel construction ensures long life even under the most demanding conditions
* Rack mount brackets included