Free Delivery on all orders over £99*

Adastra SL3 3" Slimline Ceiling Speakers (Pair)

£3499
The RRP is the manufacturer's recommended retail price of the item.
Limited Stock
We are an Independent UK Company
Price match. Found it cheaper? Contact us
Trade Discount Available
Description

The Adastra SL3 is a pair of slimline ceiling speakers built around a 3" hi-flex main driver for full range output with extended low frequency response. The flared baffle spreads sound across a wide 160-degree dispersion angle, so you get even coverage across a room rather than a single fixed listening spot. An efficient 2-way crossover network keeps the sound balanced across the frequency range.

Fitting is quick. The SL3 uses two spring clips that clamp against the ceiling material once you have cut the hole, so you don't need extra brackets or fixings. The result is a low, understated profile that sits close to the ceiling line. Gold-plated spring terminals take the speaker cable and hold it securely, and they resist tarnishing over time for a reliable connection.

Wired at 8 ohms, the SL3 works with most standard home and light commercial amplifiers. The speakers are supplied in pairs, ready to go straight into a stereo or multi-room setup. If you need more output or a larger driver, the same SL range steps up to the 5.25" SL5 and 6.5" SL6 models, which add a mylar tweeter and use 'dog-ear' mounts for higher frequency detail. The SL3 keeps things simple where a discreet, compact speaker is the priority.

Specification
Weight (each) 0.36KG
Dimensions (each) 57mm x 100mmØ
SPL @ 1W/1m 82dB
Mounting depth 57mm
Cutout 84mmØ
Power rms 10W
Frequency response 200Hz - 20kHz
Woofer 75mmØ (3") PP cone
Impedance 8 Ohm
Dispersion angle 160°
Frequently Asked

What size is the SL3 driver?

The SL3 has a 3" hi-flex main driver, giving full range output with extended low frequency response in a compact housing.

How do the SL3 speakers mount?

They fit using two spring clips per speaker. The clips clamp against the ceiling material once the hole is cut, so no separate brackets are needed.

What impedance are they?

Each speaker is rated at 8 ohms, which suits most standard home and light commercial amplifiers.

Are these sold singly or in pairs?

The SL3 is supplied as a pair, ready for a stereo or multi-room install.

Does the SL3 have a separate tweeter?

No. The SL3 uses a single hi-flex driver. The larger SL5 and SL6 models in the range add a mylar tweeter for high frequency reproduction.

How wide is the sound coverage?

The flared baffle gives a 160-degree dispersion angle for wide, even coverage across a room.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.

See it lit, in person

Lighting looks different in a real room. Come and see our range at our showrooms in Birmingham, Hong Kong and Dubai, or talk to our design team wherever you are.

Niori lighting showroom trailer video with closeups of alabaster lighting

Why Niori

Over 20 years lighting homes worldwide

We are a specialist lighting and mirror retailer with showrooms in Birmingham, Hong Kong and Dubai, shipping to customers around the world. Our own design team is here to help, from first idea to final fitting.

Genuine products

An authorised stockist

Every product arrives brand new with the full manufacturer warranty. Found it cheaper elsewhere? Ask us about a price match.

Ordering with us

Free delivery over £99

Free delivery on orders over £99, in the UK and worldwide. Easy returns within 14 days, subject to our returns policy. Full manufacturer warranty included.

Design help

Not sure what you need?

Our design team can help you plan your lighting, share photos and videos of stock, and send samples worldwide. Book a showroom visit in Birmingham, Hong Kong or Dubai, or ask about our lighting design service.

Our Reviews

From first click to final installation, our customers share how Niori lights up their spaces. Read their words and envision what’s possible for yours.

Featured Projects

Step into our portfolio and see how we transform homes, restaurants, and commercial spaces and more, worldwide. Click here for a closer look at our latest projects.

Description

The Adastra SL3 is a pair of slimline ceiling speakers built around a 3" hi-flex main driver for full range output with extended low frequency response. The flared baffle spreads sound across a wide 160-degree dispersion angle, so you get even coverage across a room rather than a single fixed listening spot. An efficient 2-way crossover network keeps the sound balanced across the frequency range.

Fitting is quick. The SL3 uses two spring clips that clamp against the ceiling material once you have cut the hole, so you don't need extra brackets or fixings. The result is a low, understated profile that sits close to the ceiling line. Gold-plated spring terminals take the speaker cable and hold it securely, and they resist tarnishing over time for a reliable connection.

Wired at 8 ohms, the SL3 works with most standard home and light commercial amplifiers. The speakers are supplied in pairs, ready to go straight into a stereo or multi-room setup. If you need more output or a larger driver, the same SL range steps up to the 5.25" SL5 and 6.5" SL6 models, which add a mylar tweeter and use 'dog-ear' mounts for higher frequency detail. The SL3 keeps things simple where a discreet, compact speaker is the priority.

Specification
Weight (each) 0.36KG
Dimensions (each) 57mm x 100mmØ
SPL @ 1W/1m 82dB
Mounting depth 57mm
Cutout 84mmØ
Power rms 10W
Frequency response 200Hz - 20kHz
Woofer 75mmØ (3") PP cone
Impedance 8 Ohm
Dispersion angle 160°
Frequently Asked

What size is the SL3 driver?

The SL3 has a 3" hi-flex main driver, giving full range output with extended low frequency response in a compact housing.

How do the SL3 speakers mount?

They fit using two spring clips per speaker. The clips clamp against the ceiling material once the hole is cut, so no separate brackets are needed.

What impedance are they?

Each speaker is rated at 8 ohms, which suits most standard home and light commercial amplifiers.

Are these sold singly or in pairs?

The SL3 is supplied as a pair, ready for a stereo or multi-room install.

Does the SL3 have a separate tweeter?

No. The SL3 uses a single hi-flex driver. The larger SL5 and SL6 models in the range add a mylar tweeter for high frequency reproduction.

How wide is the sound coverage?

The flared baffle gives a 160-degree dispersion angle for wide, even coverage across a room.

Shipping & Returns

Delivery UK delivery is £14.99, and delivery is free on all orders of £99 or more, in the UK and internationally.

Returns If you change your mind, you have 14 days from delivery to tell us, and a further 14 days to send the goods back. Return postage for a change-of-mind return is paid by you. Change-of-mind returns are subject to an inspection and handling deduction. See our full returns policy.

To arrange a return, call us on 020 8149 5199 or use our contact page.