ACCESS SUBWOOFERS
User Manual
2
Connections in series
Using multiples of subwoofers for such comprehensive installations, it is sometimes better to connect them
together in a series circuit. Using a low impedance load to the amplifier effectively ensures it will work less hard.
For connecting the subwoofers, they are effectively looped together in any series circuit.
Thus the positive (+) of 1st subwoofer will be connected to the positive (+) of the amplifier.
The negative (-) of the 1st subwoofer will be connected to the positive (+) of the 2nd subwoofer.
Then depending on how many subwoofers are to be included this looping will continue, until the last (in this
basic case the 2nd subwoofer), will have its negative (-) connected to the negative (-) of the amplifier.
Calculation of the impedance is (Z), for the given impedance value nominal (R), is 4 ohms.
• 2 subwoofers : Z = R1 +R2 Z = 4 Ω + 4 Ω Z = 8 Ω
Connections series and parallel, combined
Depending on your installation amplifier(s), subwoofer(s), various combinations of series and parallel circuits
can be used. The real advantage of doing this is to have a system with available power, but at the same time
to ensure the system impedance load is optimum for the amplifier(s) used.
Connection diagrams for the 25 A1 and 30 A1
Examples and configurations for various multiples of subwoofers:
2 subwoofers 25 A1 or 30 A1 in parallel. Z = 2 Ω 3 subwoofers 25 A1 or 30 A1 in parallel. Z = 1,33 Ω
notice sub access 1.indd 2notice sub access 1.indd 2 14/02/07 16:33:4014/02/07 16:33:40
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