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QED SS40 4-Way Speaker Switching Unit


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Condition: New

Brand-new, unused, unopened and undamaged item in original retail packaging (where applicable).


Please see QEDs website for further details.

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Was: £119.95

A really neat speaker switching unit by QED which enables connection and switching of four pairs of loudspeakers in a parallel or series configuration from a stereo amplifier. The QED SS40 switching unit comes in a tidy two-tone anodised aluminium outer case with on / off switches at the front and silver-plated contacts at the rear. The curved anodised aluminium fascias and precision moulded buttons of QED's updated switching accessories give this new range a very contemporary look with excellent ‘shelf' appeal.

The QED SS40 is a popular choice with our home installation customers using in-ceiling and in-wall speakers. Enables connection and switching of four pairs of speakers (in parallel) from a stereo amplifier.

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 ohms 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 ohm speakers (and a 4 ohm min amp) you should always use the parallel switch. If you have 4 ohm speakers and a 4 ohm min amp you should always use the series switch.

How Do These Switches Deal With Powerful Amplifiers?
These accessories use mains switches which are rated at 6A which means the max power they can handle is 288W given an 8 ohm load

QED SS40 Speaker Switching Unit Features

  • Tick Series/parallel switching ensures safe amplifier impedance loading, all pairs on (using four pairs of 8 ohm speakers) – 4 ohms.
  • Tick Power rating: 150 Watts RMS.
  • Tick Silver-plated switch contacts.
  • Tick Large Cable Entry Protected Terminals (3.95mm dia)

While we do our best to keep this information up to date, please be aware that all specifications are subject to change by the manufacturer at any time.

Options from £69.00 to £169.95


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Delivery is available to most addresses within the United Kingdom. Some services may not be available to all postcodes. More information is available at the basket and on our delivery page.

We do not dispatch orders to addresses outside of the United Kingdom.

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