QED A-SS20 2-Way Parallel Speaker Switch
A really neat speaker switching unit by QED which enables connection and switching of two pairs of loudspeakers (in parallel) from a stereo amplifier. The QED SS20 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 SS20 is a popular choice with our home installation customers using in-ceiling and in-wall speakers. Enables connection and switching of two 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 SS20 Speaker Switching Unit Features
- Impedance loading both pairs on (using two pairs of 8 ohm speakers) – 4 ohms.
- Power rating: 150 Watts RMS.
- Silver-plated switch contacts.
- Large Cable Entry Protected Terminals (3.95mm dia)
- Screw terminals.