Microlab
Microlab SP-H21BK 36W 2.0 Bluetooth speaker
A 36 Watt two-way stereo speaker pair with Bluetooth 2.1, 3.5 inch woofers, silk dome tweeters and wooden cabinets
- Configuration2.0
- Total Power36 Watt
- Satellite RMS Power /eaAmplifier: 18 Watt x 2RMS
- Subwoofer RMS PowerTweeter: 10Watt Woofer: 20 Watt
- DriverWoofer drive unit: 3.5" Tweeter drive unit: 1"
- Frequency Response50Hz - 20KHz
- Bluetooth 2.1 wireless streaming from phones and laptops
- 36 W total power fills a room with clear sound
- Two-way drivers with 3.5" woofers and 1" silk dome tweeters cover 50 Hz – 20 kHz
- Wooden cabinets with leather finish suit desktop setups
- Multiple inputs include RCA, 3.5 mm and binding posts
Two-channel Bluetooth desktop speaker
The Microlab SP-H21BK is a 2.0 stereo pair designed for desktop or small-room listening. Each cabinet houses a 3.5 inch woofer and a 1 inch silk dome tweeter in a two-way layout. A CSR Bluetooth 2.1 chipset handles wireless streaming with A2DP and AVRCP profiles. The system delivers 36 watt total RMS power from a built-in amplifier.
Bluetooth 2.1 bandwidth and codec limits
Wireless audio uses Bluetooth 2.1 with EDR, A2DP and AVRCP profiles. This version caps practical stereo bitrate well below lossless quality, so high-resolution files are transcoded. Range is the typical short-room distance for class 2 radios. Wired analogue input via RCA bypasses the codec entirely for cleaner signal path.
36 watt headroom and bass extension
The 18 watt per channel amplifier drives woofers rated to 50 hertz low-frequency response. At moderate volumes the pair fills a desktop or small bedroom with clear mids and adequate bass weight. Pushed hard the 3.5 inch drivers reach excursion limits and low-end output rolls off. Large rooms or party-level SPL exceed the available headroom.
Highlights
- Bluetooth 2.1 wireless streaming from phones and laptops
- 36 W total power fills a room with clear sound
- Two-way drivers with 3.5" woofers and 1" silk dome tweeters cover 50 Hz – 20 kHz
- Wooden cabinets with leather finish suit desktop setups
- Multiple inputs include RCA, 3.5 mm and binding posts
Specifications
| Brand | Microlab |
|---|---|
| Model | SP-H21BK |
| Configuration | 2.0 |
| Total Power | 36 Watt |
| Satellite RMS Power /ea | Amplifier: 18 Watt x 2RMS |
| Subwoofer RMS Power | Tweeter: 10Watt Woofer: 20 Watt |
| Driver | Woofer drive unit: 3.5" Tweeter drive unit: 1" |
| Frequency Response | 50Hz - 20KHz |
| Impedance | Tweeter: 4 ohms Woofer: 8 ohms |
| Signal to Noise Ratio(SNR) | > 70 dB |
| Power Supply | AC 100V-240V, 50/60HZ |
| Dimension | Right: 7.9" x 7.7" x 4.5", Left: 7.9" x 7.4" x 4.5" |
| Weight | 10.36 lbs. |
| Features | Bluetooth Speaker with CSR latest Bluetooth chipset solution Two-way design with 3.5inch German patented woofers, 1inchPeter Larson silk dome tweeter, and a Kurt-Muller Dome Diaphragm Versatile connectivity options Wooden cabinets and leather finishing Stylish compact design of wooden cabinets and leather finishing Interfaces: Output: Terminal binding post Input: 2RCA interface Bluetooth 2.1+ EDR (Enhanced Data Rate), A2DP, and AVRCP profiles Power adapter: Input - AC 100 V - 240 V 50/60 Hz, Output - DC 18 V / 2 A |
| Package Contents | H21 speakers x 2 pcs Speaker interconnect cable, 3 m AC power adapter 3.5mm stereo to 2RCA cable, 1.8 m User manual |
| Shipping weight | 5.19 kg |
| Package size | 340 × 241 × 234 mm |
Questions about this item
Should I pick the 36 W 2.0 set or a lower-power model for a small desk?
The 36 W total output comes from two 18 W RMS amplifiers driving 3.5 inch woofers and 1 inch silk dome tweeters, so it fills a typical room without needing a separate subwoofer.
What does 36 W total power actually deliver at my listening position?
Each satellite provides 18 W RMS to its own woofer and tweeter, giving stereo sound with 50 Hz to 20 kHz frequency response and over 70 dB signal-to-noise ratio.
Does Bluetooth 2.1 limit audio quality or range compared with newer versions?
Bluetooth 2.1 with EDR, A2DP and AVRCP streams stereo audio wirelessly; the 2.0 speakers also accept analogue input via the included 3.5 mm to 2 RCA cable.
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