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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. |
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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: from 1.5 m
- 5 years warranty
- Handmade in Switzerland
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Frequency Response
Each speaker is individually calibrated in our anechoic chamber and is delivered with its frequency response sheet. A proof of quality.
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"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 |
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.
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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.
