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Definitive Technology D9 High-Performance Bookshelf Speakers - White

✓ 2 Year Warranty included
✓ Authorised UK Dealer
✓ FREE Next Working Day Courier Service to mainland UK

Definitive Technology Demand D9 high-performance bookshelf speakers deliver full-range, room-filling sound and precise imaging in a modern, elegant styling. Featuring technology advancements to both our aluminium dome tweeter and midrange/woofer sections, each speaker delivers an unrivalled sweet spot, smoother high-frequency reproduction, and three-dimensional imaging for the most technically-advanced, premium bookshelf listening experience.

£799.00
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QX MKII Drivers

An improved acrylic fibre cone material has been chosen for the QX MKII drivers. By it’s very nature, acrylic fibre is hard-wearing but offers a delicate appearance, in contrast of harsh driver materials seen in typical speakers of this price-class. Implemented into the Mission DiaDrive System, the acrylic fibre brings natural mids and exceptional lucidity. The seam-free curvilinear design has a conical support with an increased area of contact with the voice coil. This highly efficient and uncompromising system means the QX MKII series series will excel in terms of timing, with outstanding transient impact.

New look aluminium top plate

Aesthetically, the QX MKII series brings new Lux Black and Lux White matte finishes to the series, with the classic walnut pearl option. The new colour co-ordinated aluminium top-plate is more than just a visual ‘cherry-on-the-cake’; the added rigidity and support offered by this sturdy but stylish addition further enhances the performance of the precision engineered cabinets of this stand-out loudspeaker series.

Ring of Fire

Overcoming problems inherent in the physics of conventional domes, the ‘ring dome’ centre is fixed with a distinct and visible ‘phase plug’. This design enables extended HF reproduction by preventing cancellation across the centre axis of high frequency waves produced near the centre of the diaphragm. The resonance experienced by traditional domes means that, when they approach high-energy, HF performance inevitably induces distortion. Managing this phenomena inevitably reduces the HF capabilities in traditional domes, whereas the ‘ring dome’ is all but exempt of this complication. The result is a better controlled and much more consistent behaviour from 10kHz to 20kHz, and way, way above! Transient performance is dramatically improved, as is musical detailing, particularly of instrument overtones and harmonics.

Inverted Drive Geometry

Maintaining the basis of QX styling, the QX MKII is configured in the classic Mission IDG (Inverted Driver Geometry) format. By positioning the treble unit below the bass/midrange driver, the length of path is equalized so the sound waves coincide at the listener’s head height. This principle improves ‘time alignment’.

QX MKII also takes the ground-breaking serrated driver surrounds to a new level. More than just a technical appearance or pretty design touch, the surrounds have been improved by way of detailed air-flow analysis and precise measurement. The new-look QX MKII surrounds help scatter reflections and reduce airflow interference to improve the silky smooth performance of the drivers and ports.

More Information
Features

ACCESSORIES

Included Accessories:

- (2) Acoustically transparent magnetic black speaker grilles

- Optional Accessories

- (1) ST1 Demand Series Speaker Stands (Pair) - Sold Separately 

 

 

WARRANTY

Cabinet Warranty: 5 years

Drivers Warranty: 5 years

Original Purchaser Only: Yes

 

 

DESPATCH CARTONS

Carton 1

 

 

HIGH-PERFORMANCE BOOKSHELF SPEAKER

Qty Included: Pair

Orientation: Vertical

Height: 11.71" (29.74 cm)

Width: 6.5" (16.51 cm)

Depth: 11.97" (30.4 cm)

Driver Enclosure Type: MDF cabinet with extruded natural bead-blasted aluminium front baffle

Driver Complement: 

- (1)  5.25" (13.34 cm) d (Round) Polypropylene BDSS Bass - Mid/Woofer

- (1)  1" (2.54 cm) d (Round) Annealed Aluminium Dome and Laterally Offset - Tweeter

- (1)  5" (12.7 cm) h x 9" (22.86 cm) w (Oval) Passive - Bass Radiator 

 

 

AUDIO QUALITY

Total Frequency Response: 44 Hz → 24,000 Hz

Nominal Impedance: 8 ohms

Sensitivity (1 watt @ 1 metre): 88 dB

Lower and Upper -3dB Limits: 64 Hz → 22,000 Hz

 

 

INPUTS

Audio Inputs

Speaker Inputs

- (1) (Set) 5-Way Binding Posts - Gold Plated

 

 

ON-STAND MOUNT

Mounting Type: 1/4 in - 20 Threaded Insert

Available Orientations: Vertical

Mounting Location: Bottom of Speakers

 

 

ON-SHELF MOUNT

Available Orientations: Vertical

 

 

EXTERNAL AMPLIFIER

Recommended Amplifier Power Per Channel: 20 watts → 150 watts

 

 

CROSSOVER

A/V Receiver Crossover Settings: Small (80 Hz)


How will you send my item?

We ship to addresses within the UK using Royal Mail and DPD couriers.

How much does delivery cost?

Standard 2-3 working day delivery is FREE on all orders to mainland UK. Next working day courier service is available on all orders for a small fee of £4.99. On some items this is provided for FREE. 

For orders to UK Non-mainland and International destinations, there will be an additional charge at checkout. Please see below for more information.

How long does delivery take?

Depending on the delivery service you choose, delivery usually takes between 1-3 working days to mainland UK from the moment we despatch your order. Orders to UK non-mainland and international destinations can take longer.

When will you despatch my order?

Orders placed before 3pm are processed and despatched the same day (excluding bank holidays and weekends). Orders placed on weekends will be processed and despatched the following working day.

*Please note that international orders may require extra checks before we are able to despatch your order so timescales may vary.

Can I track my delivery?

Yes - Order tracking is offered as standard on all items, whether they are shipped via DPD or Royal Mail. You will receive your tracking information via email once we have despatched your order. 

UK Non-mainland and International destinations.

Due to the UK leaving the EU, some of our delivery partners have changed the way we ship to international and offshore destinations. This means that for the time being we are unable to ship items to these locations.

We are still accepting orders to these destinations however delivery times and prices are not final. We will confirm via email once we know more from our delivery partner.

Shipping for all items to UK Non-Mainland and International destinations will incur a charge at checkout. This charge is not final and we may need to charge for additional postage if required.

Shipping to international destinations may require further security checks and I.D. may need to be provided by the cardholder. We reserve the right to cancel any orders where you are do not pass our security checks or do not pay for appropriate postage.

Please note that we are unable to ship some items outside the UK. To avoid any disapointment please contact us before making your order.

What do you class as UK Non-mainland?

Rep. Ireland, N. Ireland, Channel Islands, Jersey, Guernsey, Isle of Wight, Isle of Man and Scottish Highlands. If you are unsure whether your address is classed as UK Non-mainland please feel free to contact us and an advisor will be happy to help.

For any further enquiries with regards to your delivery please contact us on 020 8813 7666 and one of our adviser's will be happy to help.


If you're not happy with your item or you've changed your mind.

Even though we're sure you'll be happy with your purchase, it's important that you are aware of how we deal with returns in the event that you need to send something back.

We understand how inconvenient it can be when you buy a product and aren't 100% satisfied with it. For this reason we have designed our returns policy to prevent any further inconvenience to you in these instances.

Under 30 days

  • You can return your goods for a full refund or exchange as long as you inform us of your intention to return the goods within 30 days of receipt, starting from the day after you receive your goods (Exclusions apply, see below.)

  • All return costs are down to the buyer and it is recommended that you return your items using a trackable method with appropriate insurance (if required).

  • Once we have confirmed your return, please ensure that you return the item within 14 days.

  • If a returns number is provided then please ensure that the parcel has this clearly marked.

  • Items need to be returned in "as new" condition in their original packaging. We don't mind if you open the product to check it, however any used or damaged products will be subject to a 25% handling fee so please take care when opening your items. 

After 30 days

  • We will not offer a refund after 30 days of you receiving your delivery unless your product is faulty. 

Exclusions from our returns policy

As we're sure you'll understand, there are some products that we can't offer returns on due to their nature. These include:

  • Special order items and cables cut from a reel (priced per metre). These items will be clearly identifiable.

  • In-Ear headphones due to health and hygiene reasons.

  • Products that include software which require activation.

 Please note that these exclusions do not apply to items that become faulty.

If your product becomes faulty

We endeavour to get your items to you in fully working order, however in the event that your items do become faulty, please read below on what you should do next.

In a lot of cases with some products, faults can be fixed by performing some basic troubleshooting, so to prevent any further inconvenience to you we advise that you contact our Customer Service team who can guide you through some basic troubleshooting before sending items back.

Under 30 days

  • If your items become faulty within 30 days of delivery you are entitled to a full refund or exchange. Please contact our customer service centre who will provide necessary returns details.

  • Please send the items back with a cover note including a description of the fault and your original order number.

  • Once we have fully tested the item and confirmed the fault, we will process the refund or exchange including cost of carriage back to us (within reason).

  • If during our testing we cannot find a fault, no refund will be given and you will be charged for delivery of the item back to you.

After 30 days

  • After 30 days you will still be able to get your faulty items repaired or replaced within the manufacturers warranty and we will be happy to assist you with this. Please contact our customer service team to find out the best way to get your items repaired or replaced. Please be aware that after 30 days we will not cover you for any carriage costs.