Description
The Adastra BH4-B is a pair of weather resistant background speakers built for indoor or outdoor use. Each cabinet carries an IP44 rating, so they cope with the odd splash and general damp without trouble, making them a sensible choice for patios, terraces, shop fronts and covered outdoor areas as well as indoor rooms. The moulded cabinet keeps the design compact while housing the drivers securely.
Sound comes from a 2-way, full-range setup with an extended low frequency driver and a dome tweeter, giving you clear mid and high detail alongside a useful amount of bass for the size. The speakers run at 8 Ohms with a 120° dispersion angle, which spreads the sound across a wide area rather than firing it in a narrow line. That makes them well suited to background music and public address (PA) work where even coverage matters more than volume in one spot.
Wiring is handled by spring terminal connections with a protective cover, so you can connect and route cables tidily. Each speaker comes with a wall mounting bracket that adjusts laterally and tilts to different positions, letting you aim the sound where you need it. The BH4-B is supplied as a pair, ready to install straight from the box. If you want a straightforward, reliable option for background audio across two zones or a single wider space, this pair covers the basics well.
Specification
| Power handling : max. |
60W |
| Power handling : rms |
30W |
| Weight (each) |
1.23KG |
| Dimensions (each) |
195mm x 125mm x 125mm |
| Frequency response |
100Hz - 20kHz |
| Sensitivity |
88dB |
| HF driver |
13mmØ (0.5") |
| LF driver |
100mmØ (4") |
| Colour |
Black |
| Impedance |
8 Ohm |
| Dispersion angle |
120° |
| IP rating |
IP44 |
Downloads
Product Manual
Frequently Asked
Can the BH4-B speakers be used outdoors?
Yes. They carry an IP44 rating, so they resist weather and moisture from most directions. This suits covered outdoor areas, patios and shop fronts, though we would avoid fully exposed positions in heavy driving rain.
Are these speakers sold individually or as a pair?
They are supplied as a pair, so you receive two speakers with two mounting brackets in the box.
What impedance are the BH4-B speakers?
Each speaker is rated at 8 Ohms, which is compatible with most standard stereo amplifiers.
How are the speakers mounted?
Each speaker includes a wall mounting bracket that adjusts laterally and tilts to various positions, so you can point the sound towards the listening area.
How do I connect the speaker wiring?
They use spring terminal connections with a protective cover, which makes it easy to fit bare speaker cable and keep the connection tidy.
What are these speakers best suited to?
They are designed for background music and public address (PA) applications, with a 120° dispersion angle that spreads sound evenly across a wide area.