QED SS40 Four Way Speaker Selector Switch
Availability: In stock
Product Code: SS40
Money Back Guarantee
We have carefully curated the best and most reliable smart home products designed for DIY and light trade installation without requiring specialist installation.
As such as we offer a 30 day "TECH4" Guarantee
If your product is not working as expected and our phone / e-mail / live chat tech support can't get you up and running then you can return it for a refund.
Terms & Conditions apply. Click here to read our full returns policy.
We know you can't wait to start enjoying your new speaker system, so we only use the quickest and most reliable couriers.
We keep plenty of stock so most of orders are delivered the next day!
We've decided to keep this really simple.
If your order is over £89 then you will get FREE next day courier. Most instances we will dispatch the same day as well, however free deliveries may take 1 extra day at most.
We also offer a range of other delivery options for Saturdays and AM deliveries.
Some additional costs apply to Ireland, Europe & Scottish Highlands. Our business isn't about making money on deliveries, but some areas do cost us a bit more than others so we have to pass that on to keep the overall delivery costs as low as possible.
|FREE Delivery (2-3 Working Days)||£0.00|
|Standard Delivery (2-3 Working Days)||£4.99|
|Express Delivery (1-2 Working Days)||£6.99|
|Standard Delivery (3-4 Working Days)||£14.99|
Most orders received before 2pm are processed and dispatched the same day provided the items are in stock. Orders are processed Monday - Friday excluding weekends and public holidays. A notice will be placed on the website if orders will not be processed for any reason outside of the aforementioned days.
Once dispatched your item will usually be with you next day! Some customers have ordered at 2pm and received it by 10am the next day!. All times stated are for guidance only, we endeavour to provide the most efficient service as possible but please ensure that you order in good time to avoid problems caused by delays in dispatch. If you are ordering a speaker system to be installed by an electrician, we reccomend that you give yourself an extra day before booking your electrician in.
If a product is delayed or out of stock we will contact you by telephone and/or e-mail in the earliest instance to discuss your order. We do our best to ensure that our stock levels are accurate, but on the odd occassion if the item you have purchased is out of stock we will contact you ASAP to discuss alternatives or to advise of the lead time.
We only use the best, and that's decided by our customers. The majority of our orders go via Interlink, UK Mail, DPD. Some lower value items such as spare parts and remote controls go Royal Mail.
Free delivery is normally via next day courier as well. (We don't guarantee you'll receive free delivery items the next day, but 99% of the time you will!)
Keeping You Updated
Once you place an order with us you will receive a notification e-mail outlining your order and details. We then get busy picking and carefully packing your item. Once we've got it all ready to go you'll receive another update to tell you it's been dispatched with a tracking number so you can keep an eye on it!
99% of our customers receive their items sooner than they expected. We pride ourselves on super-fast deliveries and do everything we can to deliver on that promise.
Any stock issues, or other delivery issues will always result in a quick phone call and e-mail to keep you updated. However we have carefully picked our products so we rarely have stock issues
Have A Question?
The QED SS40 4-way speaker switch allows you to switch between up to four pairs of speakers for your ultimate set up
This SS40 4-way speaker switch gives you superior results when connecting up to four pairs of speakers by using safe amplifier loading.
- Series/parallel Switching Ensures Safe Amplifier Impedance Loading.
- Minimum Load Impedance - 4 Ω (Using Four Pairs Of 8 Ω Speakers)
- Power Rating: 150 Watts Rms
- Silver Plated Switch Contacts
- Large Cable Entry Protected Terminals (3.95mm Dia)
- Dimensions (HxWxD): 55 Mm X 157 Mm X 155 Mm
Frequently Asked Questions
WHAT ARE THE DIFFERENCES BETWEEN THE SPEAKER SWITCHES IN TERMS OF IMPEDANCE?
All the speaker switches are configured so that if you use 8 Ω speakers the minimum impedance seen by the amplifier will be 4 Ω
WHAT ARE THE BENEFITS OF SERIES VS PARALLEL?
The switches which have more than two sets of speakers use a combination of series and parallel switching to achieve the minimum impedance of 4 Ω no matter what combination of speakers are switched on. For the two way switches there is a choice between exclusively series or parallel versions. If you have 8 Ω speakers (and a 4 Ω min amp) you should always use the parallel switch. If you have 4 Ω speakers and a 4 Ω min amp you should always use the series switch.
ALL QED SWITCHES LOAD ON 4 Ω USING 8 Ω SPEAKERS. WHAT HAPPENS IF MY SPEAKERS ARE 6 Ω?
1. Check your amp – if it can cope with a 3 Ω load or less (and some can) then you are alright. The rule is you must always use speakers with double the impedance of the amp minimum. 2. If you only have two pairs of speakers then use the two way SERIES switch.
HOW DO THE SWITCHES DEAL WITH POWER, E.G. IF I HAVE AN AMPLIFIER WITH MORE THAN 150 WATTS?
These accessories use mains switches which are rated at 6A which means the max power they can handle is 288W given an 8 Ω load
IF MY AMP IS RATED 6-16 Ω SHOULD I REALLY BE RUNNING A 4 Ω LOAD?
NO, NEVER – you should use 12 Ω minimum speakers. You can get 16 Ω speakers though – but it may just be easier to change the amp.
CAN I USE THEM IN REVERSE E.G. AS AN AMPLIFIER SWITCHER (WE KNOW THE ANSWER IS NO, BUT WHY?)
NO – because the speaker switches are designed to have two sets or more of speakers attached to one amp, if used in reverse there is always the possibility of connecting two amps at once to one pair of speakers resulting in damage to one or both amps.
WHAT IS THE TECHNICAL DEFINITION OF 'TRANSMATCH'?
For the 5 way speaker switch we don’t use parallel or series switching but use transformer coupling instead. Again you have to use 8 Ω speakers minimum if your amp is a 4 Ω minimum amp. The impedance is then matched by the transformer (hence the name) so that a net 1.6 Ω load (all 5 sets of 8 Ω speakers switched on)is converted back to a 4 Ω load. One pair of speakers (A) is not connected to the transformer but is directly connected to the amp, these will be the main speakers. The four B pairs are connected via the transformer.