Sub A125-M

Compact accurate Subwoofer


“The combination of A14-M ​​and A125-M represents an extremely compact full-range interception system with outstanding imaging properties that make listening in the studio a pleasure and promises significantly less exhausting work days.”

Fritz Fey, Studiomagazin

Main Features

Power: 225W
Frequency Range: 28Hz – 100Hz
SPL Max: 106dB
100% Analog – No DSP
Flat frequency response
Phase compensated for a better stereo image
Class G Amplifiers
Built in anti-resonance system in a double box cabinet

individually calibrated
Typical listening distance: from 1m
5 years warranty
Handmade in Switzerland

Sub A125-M – The most compact subwoofer of our range

Don’t think of a subwoofer, think of adding an extra low frequency way to your monitor.

Our SUBs are designed and calibrated to seamlessly extend the low-end of any of our loudspeakers and with and overall flat frequency and phase response. The result is remarkable when reproducing low frequency acoustic instruments. The tight, accurate, perfectly controlled bass allows hearing all details down to 28 Hz and even down to 24 Hz with our larger model.

PSI Audio program includes 2 subwoofers / Low Frequency Extensions that excel in accuracy and fit the whole range of PSI Audio monitors:
– Sub A125-M is a compact subwoofer and perfectly fits the A14-M or A17-M. Two units perfectly fit the A21-M. It extends the frequency down to 28 Hz.
– Sub A225-M is a powerful subwoofer and perfectly fits the A21-M and two units perfectly fit A25-M. It extends the frequency down to 24 Hz.

Click on a picture to choose a product from our coherent range of monitors.

Technical Data & Documents

Product A125-M
Power RMS150 W
Program Power225 W
Continuous Max SPL @ 1m106 dB (single)
Program Max SPL @ 1m111 dB (pair)
Response at -6dB28-90 Hz
Tolerances± 2.0 dB(31 Hz – 65 Hz)
Crossover frequency90 Hz
Woofer dim. Ext. /ø 258 mm /
Diaphragm mmø 210 mm
 Woofer dim. Ext. /ø 10.2 in /
Diaphragm inchø 8.3 in
Dimensions W x H x D mm320 x 480 x 380
Dimensions W x H x D inch12.6 x 18.9 x 14.9
Net Weight kg20.5 kg
Net Weight lbs45.1 lbs
Warranty5 years

Each speaker is individually calibrated in our anechoic chamber and is delivered with its frequency response sheet.
A proof of quality.

On special request, we can customize your speaker with any RAL color.
Please ask us directly.

  • gig bag
    are you travelling with your Sub A125-M? our gig bag will perfectly protect it and you can easily carry it. Handmade in USA.

What our users say

The Sub A125-M is so precise and perfectly fits my A17-M. I almost have the impression to have a 3-way system.
Ismael Antico – Soundimension