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Although the twenty5.21i is the most compact model in the new range, there’s nothing small about the sound, which has the impact you’d expect from a much larger cabinet, thanks to PMC’s ATL technology.

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Although the twenty5.21i is the most compact model in the new range, there’s nothing small about the sound, which has the impact you’d expect from a much larger cabinet, thanks to PMC’s Advanced Transmission Line technology. The speaker is ideal for use in small-to-medium listening environments where space is at a premium, but where you still want detailed bass, ultra-realistic mids and delicate highs with maximum musicality. Equally happy mounted on a stand or a bookshelf, the twenty5.21i offers maximum flexibility for placement, and also makes an excellent choice for effects speakers in an immersive sound system.
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Frequency Response: 46Hz - 25kHz Sensitivity: 86.5dB 1W 1m Recommended Amp Power: 25 - 150W Effective ATL™ Length: 1.72m 5.6ft Impedance: 8 Ohm Drive Units:
LF PMC 5.5”/140mm long-throw g-weave™ cone with cast alloy chassis
HF PMC/SEAS®, 19mm twenty5i series, SONOMEX™ fabric soft dome, Ferrofluid cooled, with 34mm surround and dispersion grille
 Crossover Frequency:
1.7kHz
 Input Connectors:
One pair 4mm binding posts
 Dimensions:

H 340mm 13.4”

W 162mm 6.4”

D 284mm 11.2”

incl. binding posts (+9mm grille)

 Weight: 6kg (13.2 lbs ea.) Available Finishes: available finish available finish available finish
available finish available finish available finish
"I have owned numerous speakers including Mission, Monitor Audio and lastly Castle and I have never felt so immersed in the sound. It’s difficult to explain but you feel so involved. I have never been so happy with a purchase. "
Mr I, Cumnock
"very good, high performance. "
Mr M, Tai kok tsui
"Very pleased with these speakers. There are relatively few high quality speakers available that will work in a limited space for near field listening (eg on a desktop). Twenty5 21i are perfect for this purpose on IsoAcoustic desk stands. Bass quality and integration is superb. Mids and highs wonderful detailed. Wonderfully musical overall and very versatile. "
Mr S, Okehampton
"Excellent and improving every day "
Mr J, Bristol
"By far the best speakers I have owned. As I have upgraded my system over the years, it was time to match it with speakers of a higher standard. The speakers compliment my system very well. They reveal the fine details whilst giving a much more consistent and full range sound over the entire frequency spectrum and at various volume levels. They are really fast and everything sounds more like real instruments and voices. Music is now even more enjoyable. "
Mr D, London
"Don’t judge straight out of the box, after about 50Hrs use the magic starts to happen. "
Mr R, Tavistock

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Awards

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  • May '21

Customer Reviews

"I have owned numerous speakers including Mission, Monitor Audio and lastly Castle and I have never felt so immersed in the sound. It’s difficult to explain but you feel so involved. I have never been so happy with a purchase. "
Mr I, Cumnock
"very good, high performance. "
Mr M, Tai kok tsui
"Very pleased with these speakers. There are relatively few high quality speakers available that will work in a limited space for near field listening (eg on a desktop). Twenty5 21i are perfect for this purpose on IsoAcoustic desk stands. Bass quality and integration is superb. Mids and highs wonderful detailed. Wonderfully musical overall and very versatile. "
Mr S, Okehampton
"Excellent and improving every day "
Mr J, Bristol
"By far the best speakers I have owned. As I have upgraded my system over the years, it was time to match it with speakers of a higher standard. The speakers compliment my system very well. They reveal the fine details whilst giving a much more consistent and full range sound over the entire frequency spectrum and at various volume levels. They are really fast and everything sounds more like real instruments and voices. Music is now even more enjoyable. "
Mr D, London
"Don’t judge straight out of the box, after about 50Hrs use the magic starts to happen. "
Mr R, Tavistock

Technology

ATL Tecnology

DEEPER, CLEARER, CLEANER BASS & MORE

• Greater detail & more natural
• A full, rich sound at any volume level
• Deeper bass from a smaller cabinet

The source of PMC’s legendary natural, realistic sound is the Advanced Transmission Line (ATL) bass-loading technology, professionally proven all around the world.

ATL uses energy generated by the bass unit in a much more intelligent, efficient way than speaker designs based on ported or sealed boxes.

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ATL Tecnology
LaminairTM Tecnology

Our Laminair™ aerodynamic vent technology takes audio performance to the next level....
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LaminairTM Tecnology