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PSB Alpha T20
Tower Speakers
A Symphony of Sound
The Alpha T20 Tower Speaker is the pinnacle of the Alpha Series, delivering a blend of exquisite performance and stylish design. It's designed to fill any room with lush, full-bodied sound. Enjoy an immersive listening journey with smooth transitions, impactful bass and unmatched clarity.
Lifelike acoustics
Delivering consistently organic, natural sound, the Alpha T20 extends its high-frequency response past any of the other speakers in the Alpha Series by using a ¾" black anodized aluminum dome tweeter. It also minimizes distortion, creating a lush soundstage filled with intricate details. With the tweeters' ferrofluid cooling and neodymium magnets, the Alpha T20 maintains consistent performance, preventing overheating and achieving higher sensitivity for better sound quality and efficiency.
Remarkable bass response
Experience exceptional audio performance with the Alpha T20 Tower Speakers. At the peak of the Alpha series, they feature exclusive dual 5 ¼" (133mm) woofers with dual-layer voice coils, ensuring remarkable low-frequency response and efficiency. The specially textured polypropylene cone minimizes distortion and breakup, while precise crossover matching creates a seamless transition between high and low frequencies. The rear-firing port further enhances the bass, delivering rich, extended lows for a truly immersive listening experience.
Key Features:
- ¾” Black anodized aluminium dome tweeter with front waveguide
- 5.25” Textured polypropylene woofer with rubber surround
- Bass reflex cabinet design with a rear-firing port
- Acoustically-transparent detachable magnetic grilles
- Dual five-way gold-plated binding post speaker terminals
- High-quality woodgrain vinyl finish

Specifications:
| Frequency Response On Axis @ 0° ±3dB | 36 - 21,000Hz |
| Frequency Response On Axis @ 0° ±1 1/2dB | 54 - 20,000Hz |
| Frequency Response Off Axis @ 30° ±1 1/2dB | 54 - 10,000Hz |
| Frequency Response LF Cutoff -10dB | 28Hz |
| Anechoic Chamber | 88dB |
| Listening Room | 90dB |
| Nominal Impedance | 8 Ohms |
| Minimum Impedance | 6 Ohms |
| Recommended Input Power | 15 - 120 Watts |
| Program Input Power | 60 Watts |
| Tweeter (Nominal) | 3/4" (19mm)Black Anodized Aluminium Dome with Ferrofluid and Neodymium Magnet |
| Woofer (Nominal) | 2 x5 1/4" (133mm)Textured Polypropylene Conewith Rubber Surround |
| Crossover | 2,500Hz, L4 |
| Internal Volume | 0.95 cu ft (27.0L) |
| Design Type | Tuned Port Bass Reflex,2 1/2" (63.5mm) Rear Port |
| Dimensions and weight | |
| Dimensions (W x H x D) | 170 x825 x243mm |
| Shipping weight (pair) | 28.5kg |
