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We currently have this product in stock and available for dispatch.
Stock Location
| AV Distribution Hub: | 1 |
"Get it" shows the next available date that we will be able to deliver this item to you on, depending on the delivery option you select, and the stock availability of anything else that you add to your shopping basket.
5-year warranty & 30-day money-back guarantee included
If you decide your order isn't suitable for any reason you can return it - just let us know within 30 days of receiving it. Please keep hold of all the original packaging until you're sure you want to keep the order.
Eligibility for Money Back Guarantee
Important: For hygiene and software licensing reasons, some items are only eligible for our Money Back Guarantee if they are returned to us unused and sealed in the original packaging with all software still "unregistered." Details of exclusions are shown within the product descriptions. Products include:
- Monitors and Headphones
- Earplugs and Ear Protection
- Reeds and mouthpieces for woodwind and brass instruments
- Mouth and Lip-Care Products
- CDs, DVDs and Software
We can collect your return for a small fee, or you can send it back to us yourself. The collection fee can be found in the returns information on each product's page on AV.com.
In the unlikely event that any item in this order is faulty, damaged or incorrect on receipt, notify us within 14 days and we'll arrange a free collection.
When returning an order please ensure products are appropriately packaged and protected, to prevent them from getting damaged.
This table provides an overview of your statutory consumer rights, compared with our standard returns policy and optional extended money back guarantee and warranty.
| UK & Europe | EU Standard | AV.com Standard | AV.com Optional |
|---|---|---|---|
| Return Period | 14 days | 30 days | up to 180 days |
| Standard delivery charges refunded? | Yes | Yes | Yes, up to 30 days |
| Upgraded delivery charges refunded? | Standard costs only | Standard costs only | Standard costs only |
| Free collection on cancellation | No | No | Yes, up to 30 days |
| Free collection if defective, delivered damaged or incorrect item | Yes, within 14 days | Yes, within 14 days | Yes, within 30 days |
We are unable to accept returns of any custom made items designed to work together as a unique package and some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging. For full information on our returns policy, please refer to our returns and refunds information guide.
10-year warranty & 180-day money-back guarantee included
If you decide your order isn't suitable for any reason you can return it - just let us know within 30 days of receiving it. Please keep hold of all the original packaging until you're sure you want to keep the order.
Eligibility for Money Back Guarantee
Important: For hygiene and software licensing reasons, some items are only eligible for our Money Back Guarantee if they are returned to us unused and sealed in the original packaging with all software still "unregistered." Details of exclusions are shown within the product descriptions. Products include:
- Monitors and Headphones
- Earplugs and Ear Protection
- Reeds and mouthpieces for woodwind and brass instruments
- Mouth and Lip-Care Products
- CDs, DVDs and Software
We can collect your return for a small fee, or you can send it back to us yourself. The collection fee can be found in the returns information on each product's page on AV.com.
In the unlikely event that any item in this order is faulty, damaged or incorrect on receipt, notify us within 14 days and we'll arrange a free collection.
When returning an order please ensure products are appropriately packaged and protected, to prevent them from getting damaged.
This table provides an overview of your statutory consumer rights, compared with our standard returns policy and optional extended money back guarantee and warranty.
| UK & Europe | EU Standard | AV.com Standard | AV.com Optional |
|---|---|---|---|
| Return Period | 14 days | 30 days | up to 180 days |
| Standard delivery charges refunded? | Yes | Yes | Yes, up to 30 days |
| Upgraded delivery charges refunded? | Standard costs only | Standard costs only | Standard costs only |
| Free collection on cancellation | No | No | Yes, up to 30 days |
| Free collection if defective, delivered damaged or incorrect item | Yes, within 14 days | Yes, within 14 days | Yes, within 30 days |
We are unable to accept returns of any custom made items designed to work together as a unique package and some items are only eligible for money back guarantee if they are returned to us unused and sealed in the original packaging. For full information on our returns policy, please refer to our returns and refunds information guide.
The product price includes 5 years' warranty and 30 day money back guarantee.
However, the AV.com extended warranty scheme provides an enhanced service, and is designed to offer a higher level of protection than many 'free' warranties offered by some retailers and manufacturers.
The highlights of this enhanced warranty service are:
Please note that this extended warranty is currently only available on products sold within the UK, EU or EEA, and is subject to the terms and conditions as detailed on the extended warranty certificate provided.
For customers in outlying areas of the country, the price of the Extended Warranty may be marginally higher, due to the potential for higher collection and redelivery transport costs.
This enhanced warranty is in addition to the standard AV.com and manufacturer warranty policies, and the AV.com terms and conditions of trade. No statement or condition of sale contained within these terms affects or restricts your statutory rights as defined under the Consumer Contracts Regulation 2014.
Finance from £63.41 per month (14.9% APR Representative)
Buy on finance from £63.41 per month Finance from £63.41 per month
Please note: This is only available where all items in the order are dispatched in a single delivery. Gear4music Ltd is authorised and regulated by the Financial Conduct Authority (FCA FRN 706272) and acts as a credit intermediary and not a lender, offering credit products provided by a limited number of finance providers, including Klarna Financial Services UK Limited (company number 14290857), which is authorised and regulated by the FCA for carrying out regulated consumer credit activities (firm reference number 987889), and for the provision of payment services under the Payment Services Regulations 2017 (firm reference number 987816)
More infoTo make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 12, 24, 36 or 48 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!
Representative Example
To help you understand how our finance options work, the examples below are based on a total order value of £250:
| Finance | APR Rep. | Deposit to Pay | Payments | Total Payable |
|---|---|---|---|---|
| 12 months | 21.90% | £25.00 | 12 months: £21.51 Final Payment: £21.51 No settlement fee | £283.12 |
| 24 months | 21.90% | £25.00 | 24 months: £11.92 Final Payment: £11.92 No settlement fee | £311.08 |
| 36 months | 21.90% | £25.00 | 36 months: £8.77 Final Payment: £8.77 No settlement fee | £340.72 |
| 48 months | 14.90% | £25.00 | 48 months: £6.34 Final Payment: £6.34 No settlement fee | £329.32 |
How to Apply
Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal. If your order qualifies, during the Payment step you'll see options available underneath the Flexible Payment Options heading. Select your preferred option and then click the orange PLACE ORDER USING FINANCE button. This will start your application with our finance partners. Completing this form should take approximately 10 minutes.
You should get an instant answer on whether your application has been successful, though in some rare cases our finance provider may need to look at the application in more detail.
Please note: This is only available on orders placed via the website consisting of a single delivery, and is not available in store or via phone currently. Warranties can not be purchased on finance. If you wish to purchase warranties, please choose another payment method or contact us after placing your order and we'll be happy to help you. Additionally, please note that software downloads are subject to a £300 maximum spend.
To make it as easy as possible for you to get the gear you want, we offer a range of instant finance options. If you spend £250 or more online, you can choose to pay over 12, 24, 36 or 48 months. The majority of decisions are given instantly, so you could get your new gear sooner than you thought!
Representative Example
To help you understand how our finance options work, the examples below are based on a total order value of £250:
| Finance | APR Rep. | Deposit to Pay | Payments | Total Payable |
|---|---|---|---|---|
| 12 months | 21.90% | £25.00 | 12 months: £21.51 Final Payment: £21.51 No settlement fee | £283.12 |
| 24 months | 21.90% | £25.00 | 24 months: £11.92 Final Payment: £11.92 No settlement fee | £311.08 |
| 36 months | 21.90% | £25.00 | 36 months: £8.77 Final Payment: £8.77 No settlement fee | £340.72 |
| 48 months | 14.90% | £25.00 | 48 months: £6.34 Final Payment: £6.34 No settlement fee | £329.32 |
How to Apply
Applying for finance couldn't be easier - if your order totals £250 or more, simply proceed through the checkout as normal. If your order qualifies, during the Payment step you'll see options available underneath the Flexible Payment Options heading. Select your preferred option and then click the orange PLACE ORDER USING FINANCE button. This will start your application with our finance partners. Completing this form should take approximately 10 minutes.
You should get an instant answer on whether your application has been successful, though in some rare cases our finance provider may need to look at the application in more detail.
Please note: This is only available on orders placed via the website consisting of a single delivery, and is not available in store or via phone currently. Warranties can not be purchased on finance. If you wish to purchase warranties, please choose another payment method or contact us after placing your order and we'll be happy to help you. Additionally, please note that software downloads are subject to a £300 maximum spend.
Key Features
The Definitive Technology Demand D17 Tower Speakers are ideal for listeners who want full-range, detailed sound in larger rooms without bulky, overbearing speakers. Its modern design features an extruded aluminium front baffle that enhances both rigidity and style, reducing vibration for cleaner, more accurate audio. Dual side-firing passive radiators deliver deep, controlled bass with no port noise, helping you enjoy punchy low-end even in compact spaces.
Inside, a patented BDSS midrange driver brings out the richness in vocals and instruments, while the aluminium dome tweeter with Wave Alignment Lens creates a wide, immersive soundstage. The offset tweeter placement reduces diffraction, keeping vocals and lead elements precisely focused. Whether you're listening in stereo or watching films, the D17 offers high-performance sound in a sleek, space-conscious form.
Product Ref: 208476
The Demand Series woofers use carbon fibre cones to deliver deeper, tighter bass with minimal distortion. Carbon fibre’s high rigidity means the cone maintains its shape even under heavy load, avoiding the flexing and distortion that can blur low frequencies. The result is a more precise and powerful low-end response, whether you’re listening to music or watching films. This material choice ensures long-lasting performance, with cleaner bass that feels both controlled and dynamic in any room.
The Patented Linear Response Waveguide is designed to improve how sound travels both directly toward you and throughout your room. By smoothing out the frequency response and extending it both on and off axis, this feature enhances clarity and tonal balance across the mids and highs. Voices sound more natural, instruments more lifelike, and the overall soundstage becomes more consistent, regardless of where you're seated. It's a key contributor to the speaker’s ability to deliver a convincing, immersive experience.
Unlike traditional speaker designs, the Demand Series places the tweeter slightly off-centre. This subtle change reduces unwanted reflections and diffraction that typically occur when sound waves hit the edges of the speaker’s front panel. The result is a cleaner, more stable stereo image, helping you lock onto vocals and instruments with greater precision. It gives music a more lifelike centre presence and improves clarity without altering speaker placement. A small design choice with a big impact on how natural your audio sounds.
At the top of each Demand speaker is a 1-inch aluminium dome tweeter, fitted with Definitive Technology’s 20/20 Wave Alignment Lens. This unique lens guides high-frequency sound more evenly throughout the room, softening harsh edges and creating a balanced, immersive listening experience. Whether you’re in the sweet spot or off to the side, the highs stay smooth and well-defined. It’s perfect for large or shared spaces where consistent sound quality matters, letting everyone enjoy crisp, detailed treble without compromise.
The BDSS (Balanced Double Surround System) midrange driver is specially designed to move more air than typical drivers its size—without losing control. That extra movement translates into richer midrange detail and surprisingly punchy bass from a compact form. A 6.5-inch BDSS driver, for instance, performs like a standard 8-inch driver, giving you more power and precision without needing a larger cabinet. Whether it's dialogue, vocals, or lead instruments, everything sounds clearer, more dynamic, and better anchored in space.
Drawing from decades of experience in speaker design, Definitive Technology has engineered dual side-firing passive radiators into each Demand tower. These radiators extend the speaker’s bass response without the need for a rear port, allowing placement closer to walls while avoiding distortion or air noise. The result is tight, extended low-end performance in a sleek, space-efficient enclosure. It’s an ideal solution for those who want impactful bass that feels deep and responsive—without adding a subwoofer or sacrificing room layout.
| Tweeter | 1 x 25mm Aluminium Dome Tweeter with 20/20 Wave Alignment Lens |
|---|---|
| Midrange | 1 x 133mm Patented BDSS Driver |
| Woofer | 2 x 165mm Carbon Fibre Woofers |
| Bass Radiator | 2 x 250mm Bass Radiators |
| Frequency Response (3dB limit) | 42 - 22,000Hz |
| Sensitivity (2.83V/1m) | 87 dB |
| Nominal Impedance | 4 Ohm |
| Crossover | 280 / 2,900Hz |
| Recommended Amplifier Power | 40 - 300 Watts |
| Dimensions (H x W x D) | 1056mm x 185mm x 358mm |
| Weight | 29.1 Kg |
| Product Code | DEMANDD17BK |
| EAN | 0747192131982 |
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