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QED Speaker Switch, SS50 5 Way

by QED

SS50 5 Way Speaker Switch

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



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 (3.95 mm 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