Funktion-one F81

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Opposite polarity (“out of phase”)

Fig 7.3-2

Loudspeakers with opposing polarities, will give:

 Poor bass extension

 No bass impact

 Poor “between the speakers” imaging. Just hard left or hard right “distant” effects

 No solid central vocal image. Centre-panned vocals will sound indistinct or thin and, again, the

“distant” effect will be evident.

It is usually fairly easy to ensure that your loudspeakers are wired to the same polarity if all your

loudspeakers are being driven via identical signal paths and equipment. Simply check that the same

loudspeaker cable core colours are wired to the same + or – pins at the amplifier end and at the

loudspeaker connector end.

If you cannot be certain that your signal paths are identical – you may be using a mix of old and new

equipment or equipment from different manufacturers, for instance – it makes sense to check out the

system using a polarity checker.

A good polarity checker, such as the Funktion One ASPC1, will allow you to check not only your amplifier-

loudspeaker combinations but, and this is important, the entire signal path including mixers and

crossover connections.

Introducing the Funktion One Audio Systems Polarity Checker (ASPC1)

Pulse generator

 XLR pulse generator output

 LED pulse indicator

Detector

 Built in microphone

 LED polarity indicators

General

 Belt pouch included

 Batteries included

 User Instruction Card

The ASPC1 is a two-part system comprising a pulse generator and a detector. The pulse generator allows

you to inject a special test signal anywhere in the signal path whilst the detector microphone lets you

check the resulting loudspeaker polarity acoustically. See the ASPC1 user guide for more information.

Funktion-one F81 - Page 21