www.blucubespeakers.co.uk
When connecting more than one pair of speakers to an amplifier it is vital to
ensure that impedances are matched. Your amplifier will specify an
impedance range with which it can handle and you must ensure you do not
drop the total impedance below the minimum level or you may damage your
amplifier. Conversely if the total impedance is too high, sound quality will be
adversely affected. If in doubt you should consult a professional installer or
contact BluCube directly before commencing installation.
As an example, a typical amplifier may specify an operational acceptable
impedance range of 4 to 8 ohms. If you connect two pairs of BluCube
Loudspeakers (set to 8 ohm impedance on the circuit board) in parallel, the
impedance you will present to the amplifier is 4 ohms. This is within limits. If
you connect them in series, you will present 16 ohms resistance to the
amplifier which will have a negative effect on sound quality.
If you switch the impedance of your BluCube loudspeakers to 4 ohms and
connect two of them in parallel, then the impedance will be 2 ohms and may
damage your amplifier. If they are connected in series, the impedance will
be 8 ohms and therefore within acceptable limits.
Please note that, much like attaching a trailer to the back of a car, attaching
a second set of speakers to an amplifier will put additional load on the
amplifier (or engine). This makes it work harder for the same performance
or it may simply not have the power to perform at all. You need to check the
capability of your chosen amplifier before tackling this.
Home Theatre Placement
When using the speakers as rear channel speakers in a home cinema
environment, they should be ideally located between 0.4 to 1.8m behind the
main listening position. They should be separated approximately 1.8m to
3.0m apart.
Wire Gauge and Quality
A good rule of thumb to consider when installing speakers is that the total
wire resistance should be less than 10% of the speaker impedance. If using
an 8 ohm speaker, your wire resistance should therefore be no more than
0.8 ohms.
The resistance of any wire is directly proportional to its length. So if you
double the length, you double its resistance.
Home Theatre (Dolby 5.1)Layout
Subwoofer
Centre
Right
Front
Left
Front
Listening/Viewing
Area
Left
Rear
Right
Rear
TV