QED Performance Subwoofer Cable

Item code: QED Performance Subwoofer Cable

The QED Performance Subwoofer is a mono RCA cable for connecting a hi-fi amplifier or AV receiver to an active subwoofer. It uses two isolated solid-core 99.999% OFC conductors of different diameters, a dual electrostatic screen and an overall Zn/Mn …
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SPEAKER CABLES:

A quantity of 2 means you will receive a pair of speaker cables e.g. for your front left and front right speakers. By entering a quantity of 1, you will get a cable for a single speaker e.g. centre speaker and this option also enables you to vary the length (and termination) of your cable for each speaker.

OTHER CABLES:

A quantity of 1 means you will receive a single cable in the case of aerial, satellite, subwoofer, digital coaxial & optical cables and a pair of cables in the case of 2 rca to 2 rca analogue audio cables.

NON-CABLE PRODUCTS:

A quantity of 1 means you will receive 1 of the specified products.

£49.17 ex. VAT
Available — built to order, dispatches in 24 hours
Delivery: Royal Mail Tracked 24  ·  DPD Next Day from £8.95  ·  DPD Saturday from £12.95
Order before 4pm (Mon–Fri) for same-day dispatch
Our promise: 60-day returns · Free burn-in · Built in our UK workshop · 24 Months warranty · Expert support on every order

QED Performance Subwoofer


The QED Performance Subwoofer connects the subwoofer output of a hi-fi amplifier or AV receiver to an active subwoofer. That job has its own demands. A subwoofer is rarely placed next to the amplifier and often sits across the room, so the cable may run for several metres past mains leads, network cables and other equipment. The range starts at 3.0m and goes up to 6.0m and 10.0m for exactly that reason.

It shares its core design with QED's Performance Audio interconnect. Solid Complementary Conductor Technology uses two electrically isolated solid-core conductors of 99.999% oxygen-free copper in different diameters, a construction QED have shown reduces small timing errors in the signal. In this application QED's listening tests found a more accurate rendition and an exceptionally tight low-frequency response, keeping the rhythm and impact of the music rather than letting the bass drag or bloat. A foamed polyethylene dielectric keeps capacitance low, which helps on longer runs into the high input impedance of a subwoofer amplifier.

The screening is what makes the long lengths work. A dual electrostatic screen keeps external electrical noise out of the signal path, and QED's Ferrite Insulation Technology adds an overall zinc-manganese ferrite jacket that absorbs digital and RF interference. A long unbalanced cable picks up more noise than a short one, and a subwoofer amplifier raises its own background noise level along with the signal, so a well-shielded cable is worth having here. An ultra-flexible TPE outer jacket guards against microphonic handling noise and makes the cable easy to route around a room, and gold-plated QED phono plugs give a low-noise, high-conductivity connection that won't tarnish.

 

What QED say about the Performance Subwoofer

MONO PHONO TO PHONO SUBWOOFER INTERCONNECT

QED Performance Subwoofer cables with Solid Complementary Conductor Technology™ feature two electrically isolated, solid, 99.999% oxygen-free copper central conductors of differing diameter which have been proven to reduce minute data timing errors. Listening tests have shown that this unique construction allows the analogue cable to deliver a more accurate musical rendition, retaining the rhythm and excitement of the original piece to produce an exceptionally tight low frequency delivery when used to connect a hi-fi amplifier to an active sub-woofer. In addition, to help prevent microphonic handling noise, the analogue signal is protected by an ultra-flexible TPE outer jacket. A dual electrostatic screen is also provided to prevent external electrical noise signals entering the signal path and this is combined with QED Ferrite Insulation Technology™, which supports the analogue signal in a matrix of complete radio silence.

Features:

  • Solid Complementary Conductor Technology™ - provides an enhanced audio pathway to avoid time-smearing of unbalanced analogue signals
  • Ferrite Insulation Technology™ - features an overall Zn/Mn ferrite jacket to protect delicate analogue signals from digital and RF interference
  • Foamed polyethylene dielectric - reduces capacitance and ensures a low-loss environment for high input impedance analogue signals
  • Ultra-flexible TPE outer jacket - for immunity to microphonic handling noise
  • High quality gold-plated QED phono plugs - provide a low-noise, high conductivity connection for life

Specifications

General
  • Brand: QED
  • Model: Performance Subwoofer
  • Range: QED Performance
  • Type: Mono phono to phono subwoofer interconnect
  • Available Lengths: 3.0m (QE7711), 6.0m (QE7714), 10.0m (QE7717)
Construction
  • Conductors: Solid Complementary Conductor Technology™, two electrically isolated solid 99.999% oxygen-free copper central conductors of differing diameter
  • Dielectric: Foamed polyethylene
  • Screening: Dual electrostatic screen
  • Ferrite Insulation Technology™: Overall Zn/Mn ferrite jacket against digital and RF interference
  • Outer Jacket: Ultra-flexible TPE
Connectors
  • Plugs: High quality gold-plated QED phono (RCA) plugs
  • Configuration: Mono, single RCA to RCA
Compliance and Origin
  • Markings: UKCA, CE
  • Country of Manufacture: China

Specifications

General
  • Brand: QED
  • Model: Performance Subwoofer
  • Range: QED Performance
  • Type: Mono phono to phono subwoofer interconnect
  • Available Lengths: 3.0m (QE7711), 6.0m (QE7714), 10.0m (QE7717)
Construction
  • Conductors: Solid Complementary Conductor Technology™, two electrically isolated solid 99.999% oxygen-free copper central conductors of differing diameter
  • Dielectric: Foamed polyethylene
  • Screening: Dual electrostatic screen
  • Ferrite Insulation Technology™: Overall Zn/Mn ferrite jacket against digital and RF interference
  • Outer Jacket: Ultra-flexible TPE
Connectors
  • Plugs: High quality gold-plated QED phono (RCA) plugs
  • Configuration: Mono, single RCA to RCA
Compliance and Origin
  • Markings: UKCA, CE
  • Country of Manufacture: China

We use Royal Mail 1st Class services for our Standard Delivery.

Orders received before 4.30 pm Monday to Friday are usually dispatched the same day by FIRST CLASS post (unless premium postal or timed courier services are selected), subject to stock availability. This does not apply to custom-length cables and speaker cables as these require a longer timescale to terminate. This also excludes all cables selected for the burn-in service. Please note, we do not process orders on national holidays in the UK. Over 98% of our orders are delivered the next working day including Saturdays.

 

Standard delivery is usually within 2 working days, although 98% of all orders are delivered the next working day including Saturdays. In extreme cases, such as delivery to the Highlands and Islands, this may take 3 days.

 

All items are fully insured and come with an invoice from Future Shop. We use the Royal Mail for delivery of small packages and DPD Local or DHL for items that weigh over 2KG. Items over 2KG are fully insured and will usually be delivered within 48 hours of placing your order subject to stock availability. For international orders, we use FedEx or DHL services where customers have selected this option.

 

 

Please note, special orders for non-standard cable lengths may be subject to longer deliver time-scales. This may vary from manufacturer to manufacturer.

 

We offer 'Free delivery on orders over £99' subject to the following terms & conditions:

  • Applies only to orders with £99 or more of items (including VAT at the UK rate), at Future Shop
  • Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or DHL next working day services which deliver from 9.00am to 6pm within mainland UK (excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or DHL).
  • Applies only to deliveries to addresses within mainland UK and Northern Ireland addresses. Applies only to orders that are to be delivered to a single Mainland UK delivery address.
  • You will not be eligible for free delivery on your order if any items are cancelled or returned for a refund, bringing the total order amount below £99. Where items are returned, the refund due will be the cost of the item less any postage costs.
  • We reserve the right to change or discontinue 'Free delivery on orders over £99 promotion at any time.
  • FREE DELIVERY FOR ORDERS OVER £99 OFFER DOES NOT APPLY TO TRADE CUSTOMERS.

 

UK Postal & Delivery Charges - FIRST CLASS

Free UK delivery on all orders over £99*

Weight Price (FIRST CLASS UK POSTAGE)
0g - 1000g £3.95
1000g - 1400g £4.95
1400g - 1800g £5.95
1800g - 2000g £6.95
2000g - 3000g £8.95


* Free Delivery on orders over £99 utilises Royal Mail First Class postal service for items weighing under 2KG. For items weighing over 2KG, we use DPD or DHL next working day services which deliver from 9.00am to 6pm within mainland UK.

Free Delivery for orders over £99 excludes Royal Mail Special Delivery Services and timed next day delivery services by DPD or DHL.

 

Special Delivery UK - Guaranteed Next Working Day

We have 99.9% of the UK covered With Royal Mail Next Day Special Delivery. We guarantee delivery to most UK addresses by 1pm the next working day. This includes Northern Ireland, Jersey and Guernsey. Some places take longer to deliver to but we still guarantee delivery within three working days by 5.30 PM.

 

Please note, Royal Mail Special Delivery for next working day may not be possible where non-standard cable lengths are ordered. If this is the case, the item will be shipped via The Royal Mail Special Delivery service as soon as the cable is custom made.

 

For orders weighing over 2KG, we reserve the right to ship items using Next Day Pre-Noon Courier Services where Royal Mail Special Delivery option has been selected.

 

Channel Islands & Northern Ireland

We accept orders from all Channel Islands including Alderney, Jersey, Guernsey and Sark. Unless you select a premium service, Items weighing under 2KG are delivered using our standard UK delivery option above. For items weighing over 2KG, a surcharge may be applied for all deliveries to the Channel Islands as well as Northern Ireland.

 

European Countries

Deliveries to EU member states are not subject to 20% VAT after December 31st 2020 and therefore the 20% VAT on items is automatically deducted when you log-in, register or proceed to place an order.

 

The customer will be liable for the VAT at the local VAT rate, duty on the import and the brokerage service fee if applicable. This may need to be paid in advance to your local Customs & Excise office or the delivery company before your order can be delivered.

 

We offer the following shipping services:

  • Royal Mail First Class International Airmail Services - Items are usually delivered within 3 to 5 working days
  • Royal Mail Standard International Mail Services - Items are usually delivered within 7-10 working days
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 24 to 48 hours. FedEx orders must be received by 3.00pm for next day service to most destinations in Europe
  • Federal Express International Economy - Item are usually delivered within 48 to 72 hours

We reserve the right to change your shipping method without notification if you select a method that we cannot use for your shipment (for instance, we cannot ship via postal services for items over 2 Kg to International destinations). If we need to change your shipping method, we will choose the least expensive shipping method for your order.

 

Worldwide - Excluding UK & Europe

Deliveries outside of the UK are not subject to 20% VAT and so the 20% tax on items is automatically deducted when you log-in, register or proceed to place an order.

 

If applicable, the customer will be liable for the taxes at the local tax rate, duty on the import and the brokerage service fee. This may need to be paid in advance to your local Customs & Excise office or the delivery company before your order can be delivered.

 

We offer the following shipping services:

  • Royal Mail First Class International Airmail Services - Items are usually delivered within 7 to 10 working days
  • Royal Mail Standard International Mail Services - Items are usually delivered within 15 working days
  • DHL Express International - Items are usually delivered within 24 to 48 hours. DHL orders must be received by 3:30pm for next day service to most destinations in Europe
  • Federal Express International Priority - Items are usually delivered within 48 hours. FedEx orders must be received by 3.00pm in order to ship items the same day, subject to stock availability
  • Where the actual weight of the package significantly exceeds the shipping cost charged on orders, we may write to you for an additional shipping charge. For larger orders, items may be shipped in multiple packets at our discretion

We reserve the right to change your shipping method without notification if you select a method that we cannot use for your shipment (for instance, we cannot ship via postal services for items over 2 Kg to International destinations). If we need to change your shipping method, we will choose the least expensive shipping method for your order.

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QED Performance Subwoofer Cable

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Frequently Asked Questions

QED combines over 50 years of expertise with constant innovation in audio-visual connectivity. They were one of the first to prove that cables can dramatically influence sound and picture quality. Using advanced design tools and rigorous testing, QED creates products that deliver exceptional performance, reliability, and value, trusted by leading hi-fi and home cinema brands worldwide.
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AirLoc is QED’s advanced speaker cable termination method that creates a secure, low-resistance connection between cable and plug. This helps maintain signal integrity over time and prevents performance loss due to oxidation. When buying from Future Shop, you can choose professionally AirLoc-terminated cables for the best long-term results.
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QED speaker cables work in either direction, but for consistency and neat installation, it’s best to follow the printed markings on the jacket so both left and right channels match.
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AirCore™ is a conductor design used in some QED speaker cables to reduce inductance and capacitance. The result is improved timing, cleaner treble, and greater musical detail, benefits that can be heard on both hi-fi and home cinema systems.
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Absolutely. QED Ethernet cables are designed to meet or exceed CAT 6/6A specifications, ensuring fast, stable data transfer. This makes them equally suitable for music streaming, video, gaming, and everyday network use.
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Start by matching the cable type to your equipment and its connection requirements. Then consider the performance level that suits your budget and expectations. If you’re unsure, Future Shop’s experts can recommend the best QED model for your setup.
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QED speaker cables are widely regarded as a reliable upgrade from basic speaker wire, offering consistent build quality and performance across a wide range of hi-fi systems.
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Compared to thin or low-quality speaker wire, QED speaker cables can help improve clarity, bass control, and overall balance, especially in more revealing systems.
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The main difference is conductor size. XT40i uses a thicker design than XT25, which can help reduce resistance and improve control in larger or higher-powered systems.
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QED speaker cables are often chosen for their balance of price and performance, making them a popular option for entry-level to mid-range hi-fi systems.
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Write Your Own Review

QED Performance Subwoofer Cable

We are interested in your opinion of this product. let us and other customers know how you feel by filling in the comment field below. Your review will appear in this section within 3 working days.

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  • - Write 50-300 words for the product
  • - Comment on the products value and effectiveness
  • - Tell us if you like the product, but most importantly explain why you like or dislike it
  • - Mention related products and how this one rates by comparison
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