A21-M Midfield Monitor
Perfectly accurate mid-field monitor
The A21-M high power near / mid-field precision monitor covers a broad frequency spectrum, allowing the user to be in full control of their audio production. Its unique and highly optimized assets make it perfect for near, mid-field and surround sound applications where ultimate precision is required. The powerful bi-amplified output stages features the unique “AOI” output stages and has a protection circuit, which can be monitored via the red LED on the front panel.
The active crossover, with integrated “CPR”, gives the A21-M unprecedented impulse behavior – with excellent stereo imaging. The crossover is also optimized for maximum phase coherence, projecting a wide horizontal and vertical ideal listening area.
The active crossover, with integrated “CPR”, gives the A21-M unprecedented impulse behavior – with excellent stereo imaging. The crossover is also optimized for maximum phase coherence, projecting a wide horizontal and vertical ideal listening area.
The electronics are housed in a unit mechanically isolated from the speaker cabinet to avoid resonance at high sound pressure levels. Designed to work in harmony with the full range of A series monitors the A21-M also makes ideal front speakers in a surround sound setup, or can be developed in to a more powerful system by adding the A225-M sub – thus protecting your investment.
Main Features
- Power: 120 + 50W
- Frequency Range: 38Hz – 23kHz
- SPL Max: 108dB
- 100% Analog – No DSP
- Flat frequency response
- Phase compensated for a better stereo image
- Class G Amplifier
- Individually calibrated
- Typical listening distance: ≥ 1.5 m
- 5 years warranty
- Handmade in Switzerland
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"This is one of only a few speakers that I have tested with this good a step response. Of particular note though is the remarkable step response, which is presumably helped by PSI Audio’s “Compensated Phase Response (CPR) system”. This accurate time response is very rare in this type of speaker but here, PSI Audio has proven that it is possible.”
– Keith Holland Resolution Magazine UK |
Frequency Response
Each speaker is individually calibrated in our anechoic chamber and is delivered with its frequency response sheet. A proof of quality.
"You simply can't work with bad speakers, it’s pointless. The loudspeaker is the heart of music production, transporting audio so that it really gets into the ear. I use A21-M from PSI Audio and I am absolutely happy with it."
– Boris Blank, Yello
– Boris Blank, Yello
Technical Data
Power RMS: |
120 + 50W |
Program Power: |
170W |
Input Impedance: |
Sym, 10k Ohms |
Sensitivity for 100 dB @ 1m: |
0.775 V |
Signal to Noise Ratio: |
96 dBA |
Continuous Max SPL@1m: |
108 dB (single) |
Input Overload: |
24 Vpp |
Program Max SPL@1m: |
119 dB (pair) |
Response at -6dB: |
38 - 23000 Hz |
Tolerances: |
±2 dB (44Hz - 20kHz) |
Distortion THD: |
less than 1.4% (90Hz-12kHz) |
Phase tolerances: |
±45° (190Hz - 20kHz) |
Dispersion (P.N. 4 - 16 kHz) at -6 dB: |
90° x 90° (H x V) |
System: |
2 Way(s) |
Crossover frequency: |
2.4 kHz |
Woofer's dim. Ext. / Diaphragm: |
Ø217 mm / Ø170 mm |
Tweeter's dim. Ext. / Diaphragm: |
Ø100 mm / Ø25 mm |
Connectors: |
1 x XLR F / 3P |
Signal input: |
1=GND, 2=(+), 3=(-) |
Material: |
MDF |
Dimensions W x H x D mm: |
250 x 400 x 300 |
Gross / Net Weight: |
14.5 / 13.2 kg |
Voltage: |
115/230V (50-60Hz) |
Consumption Standby-Quiescent-Max: |
1.2 - 5 - 150 W |
Mean / Max Humidity: |
less than 75% / less than 90% |
External Temperature: |
5 - 40°C |
Extend the Low Frequencies and Add Power
Use one of PSI Audio’s Subwoofer / LFE to add more energy and low end to your A21-M: Our compact Sub A125-M or – our full range Sub A225-M. Thanks to our Roll-Off technology, both Sub A125-M & Sub A225-M are designed to perfectly match the A21-M Broadcast.
Available Colors
The A21-M Broadcast is available in Studio Red, Metal Black, or Pure White. On special request, we can customize your speaker with any RAL color. Please ask us directly.
Options
- Compact subwoofer A125-M – Add more power, more low end. A125-M perfectly matches an A14-M pair.
- Subwoofer A225-M – More low end (24Hz), more power for your A14-M setup.
- Gig bag – Are you travelling with your A14-M? our gig bag will perfectly protect them and you can easily carry 2 units alone. Handmade in USA.
- Grill protection – are you using your A21-M in a public space, in broadcast use or at home? protect the tweeter and woofer with our adapted grill.
- Brackets – do you need to use your A21-M suspended on a wall or on a fixation system? just add a bracket to fix them anywhere.
