Adastra AB-5 Bookshelf Speakers - Black - 4 Ohm
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Product Information
Full details
The Adastra AB-5 Bookshelf Speakers are designed for home users seeking a reliable and effective audio solution for background music, radio, or voice announcements. Their key benefit lies in providing balanced, full-range sound with compatibility with most stereo amplifiers that support 4-ohm loads. A potential caveat is their passive nature, requiring a separate amplifier to function.
All features
| Colour | Black |
|---|---|
| Series | AB-5 |
| Model Part Number | 100.930UK |
| Brand | Adastra |
Extended Product Information
FAQs
Are these active or passive speakers?
These are passive speakers, meaning they require a separate external amplifier to produce sound.
What is the recommended amplifier power?
The speakers are rated for 50W RMS power handling. While they can handle peaks up to 80W, it's best to pair them with an amplifier that provides around 50W per channel for optimal performance and longevity.
Can I use these with any amplifier?
They are designed for amplifiers that can safely drive a 4-ohm load. Most modern stereo amplifiers are capable of this, but always check your amplifier's specifications.
What type of speaker wire should I use?
Standard speaker wire (16-gauge or 18-gauge) is generally suitable for typical home use. Ensure the wire is compatible with your amplifier's connection type.
Do these speakers come with speaker wire?
No, speaker wire is not included and must be purchased separately.
How do I mount these speakers on the wall?
The speakers include keyhole flushmount wall brackets. You will need appropriate wall fixings (screws, wall plugs) suitable for your wall type.
What is the warranty period for these speakers?
Please refer to the retailer or manufacturer's warranty information for the specific warranty period applicable to this product.
Troubleshooting
No sound from speakers
Verify that the amplifier is powered on and set to the correct input. Check that speaker wires are securely connected to both the speakers and the amplifier at the correct polarity (+/-). Ensure the amplifier is rated for 4-ohm speakers.
Distorted sound at higher volumes
Reduce the volume level. The amplifier may be over-driven, or the speakers may be exceeding their power handling capacity. Ensure your amplifier's output power is appropriate for the speakers.
One speaker sounds different from the other
Check speaker wire connections for both speakers. Ensure polarity is correct on both. Test each speaker individually by swapping connections to isolate the issue to a specific speaker or wire.
Pros and Cons
Pros
- Good power handling for their size (50W RMS).
- Compatible with a wide range of stereo amplifiers due to 4-ohm impedance.
- Offers a balanced sound with a dedicated tweeter.
- Includes hardware for both shelf and wall mounting.
- Durable black woodgrain vinyl finish.
Cons
- Passive speakers require a separate amplifier.
- Limited bass response compared to larger or active speakers.
- Not ideal for critical listening or high-fidelity music reproduction.
- Peak power handling (80W) is less relevant for sustained use than RMS.
Setup, Compatibility & Care
Setup: Connect the speakers to your amplifier using appropriate speaker wire. Ensure the positive (+) and negative (-) terminals on the speaker match the corresponding terminals on your amplifier to avoid phasing issues.
Compatibility: These are passive speakers and require a separate stereo amplifier to function. They are designed for amplifiers capable of handling a 4-ohm load. Check your amplifier's specifications to ensure compatibility.
Care:
- Wipe the cabinets with a clean, dry or slightly damp cloth. Avoid abrasive cleaners.
- Keep speakers away from excessive moisture and direct sunlight.
- Ensure the speaker cones are free from dust and debris.