QED SS50 5 Way Speaker Selector Switch

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QED Code: SS50

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Sale price£265.95 Regular price£279.95
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Questions? Call our team on 02392 006118 or email sales@tech4.co.uk

Description

The SS50 5-way Transmatch Speaker Switch Allows You To Switch Between Up To Five Pairs Of Speakers For Your Ultimate Set Up.





safely connects up to 5 pairs of speakers to the same amplifier using high quality impedance matching transformers to ensure that the amplifier load impedance remains above the minimum value*





Features And Benefits



  • Unique Impedance Matching Design

  • "A" Pair bypasses transformer for Best Sound Quality.

  • For Pairs 'B1' to 'B4' Transmatch Converts a Net 2 Ω Load Back to 8 Ω for Safe Amplifier Operation

  • *minimum load impedance - 4 Ω (Using Five Pairs of 8 Ω Speakers)

  • Power Rating: 60 Watts RMS.

  • Electronic Overload Protection

  • Silver Plated Switch Contacts

  • Large Cable Entry Protected Terminals (3.95mm dia)

  • Dimensions (HxWxD): 55 mm x 157 mm x 155 mm






    • 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.




All of the items on our website are shipped from our UK warehouse, based on the South Coast near Portsmouth.

We use the top couriers including DPD & Parcelforce in order to get your product to you ASAP. 

UK MAINLAND DELIVERY

Standard Delivery - Orders Over £99
Usually Delivered Within 2-3 Working Days
FREE
Standard Delivery - Orders Under £99
Usually Delivered Within 2-3 Working Days
£3.99
Next Day Delivery (Order By 2PM)
Usually Delivered Next Working Day
£6.99

 All orders are sent on a tracked & signed for service.

INTERNATIONAL DELIVERY

Unfortunately we are currently only shipping to mainland UK and are currently not shipping to Ireland.

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