Identify the source and volume control
A streamer or DAC with suitable variable analogue outputs may connect directly. A fixed-output DAC needs a compatible preamplifier or monitor controller between it and the speakers. An integrated amplifier is useful here only if it provides a suitable pre-out; its speaker terminals are not line outputs.
Check startup volume, mute behaviour, output level and gain before first playback. Begin at a low level. A speaker's rear sensitivity trim sets the working relationship with the source; it is not the same as a convenient daily volume control for the whole system.
Run a line signal to each speaker
For A214-M as a centre speaker, use the processor or AV receiver’s centre analogue pre-out. Its XLR input needs the centre signal, with channel level, delay and crossover set in the processor. A receiver without a suitable centre pre-out cannot connect directly.
The listed PSI main speakers use a balanced three-pin female XLR input. Feed the left and right channels separately. A balanced output is a straightforward starting point; an unbalanced source requires correctly wired cabling and a compatibility check, not just any adaptor.
These models do not provide streaming, USB conversion or a wireless music connection. Digital sources still need suitable digital-to-analogue conversion upstream. Never connect an amplifier's speaker-level output to the XLR line input.
Plan power, support and listening distance
Every active cabinet needs mains power as well as its signal cable. Plan sockets, cable access, stable supports and ventilation. Follow the supplied manual for mains voltage and installation requirements; do not cover the amplifier electronics or enclose the speaker without the required clearance.
Manufacturer listening-distance guidance helps narrow the range. A14-M is oriented towards close listening; A23-M and A25-M support longer typical distances. It does not determine a suitable room by floor area, nor guarantee a listening level at your seat.
Connect a subwoofer to work with the main speakers
A subwoofer needs an audio feed whose level follows the main speakers. Depending on the source and controller, this may come from a dedicated output, a compatible split or the subwoofer's input/link arrangement. Confirm the electrical loading and routing for the actual components.
PSI's published subwoofer diagrams coordinate the main monitor's Roll-Off with the subwoofer. Do not assume that a Link connector supplies a complete high-pass crossover. With an external bass-management processor, check which device controls crossover and level settings so adjustments are not unintentionally duplicated.
Separate factory calibration from the room
PSI measures and calibrates each speaker at the factory. This controls the product's response before installation. Your walls, desk, listening seat and speaker positions still influence what you hear at home.
Begin with a consistent listening position and sensible placement. If bass is uneven or lingers, compare positions and measure response and decay before deciding whether the next step is a subwoofer, EQ, passive treatment or active absorption.
Get help with your connections and model choice
If a model interests you, tell us which source or processor you use and roughly how far you sit from the speakers. We can help check the connections and model choice, then confirm finishes, availability and possible audition arrangements. You can leave details you do not know blank.
Browse Active Speakers, then open the enquiry on the model you want to discuss. Technical sources checked 13 October 2026: PSI user manual, A23-M and Sub A125-M. MSN Audio sells these products; this is connection guidance, not a measured review of your room.