A dedicated amplifier can be used to run the SSMB6 / SSMB8 midbass drivers. This design is preferred by audio-
philes. It allows each speaker to work in the bandwidth in which they were designed for. This design will give the
installer total control over the speakers and will only be limited flexibility of the electronic crossover. If the
crossover being used is a 2-way crossover, it does not have a bandpass setting. The low pass out of the crossover
will feed the mid bass amplifier, assuming the crossover has the ability to low pass the midbass speakers high
enough for the systems needs. Many crossovers have a multiplier switch, which allows the user to select between
1x and 20x the frequency. For example, if the switch is set to 1x, the crossover will be set at the frequency that has
been selected. If the switch is set to 20x, the frequency will now be set at 20x the setting indicated. If using a x2i
this will not be necessary due to the frequency range of the crossover. See the diagram on the following page.
When using a Kicker x2i Electronic Crossover:
1. If the amplifiers that are being used are not Kicker, make sure the amplifiers have a highpass crossover. Refer to
their owners manual if you are unsure. Figure 1.
2. Connect the SSMB series speakers up to the amplifier that is being fed the signal out of the low pass section of
the Kicker x2i crossover.
3. Select the lowpass frequency on the x2i crossover that will be the upper limit of the SSMB speakers. The fre-
quency selected will be between 150Hz-300Hz. Figure 2.
4. The amplifier crossover switch at this time should be set to highpass. This will select the frequencies that will be
eliminated from the SSMB midbass speakers. Depending on the system the frequency will be between 50Hz-200Hz.
Figure 3 and Figure 4.
5. The amplifier driving the upper frequency speakers should be connected to the highpass out on the x2i
crossover and the frequency selected.To eliminate any frequency gap, the frequency setting should be the same
as the lowpass used for the SSMB series speakers.
6. If there is a subwoofer in the system, use the crossover that is in the source unit or the crossover that is in the
amplifier. The amplifier crossover is recommended, especially if using the Kicker KX series amplifiers with a fully vari-
able crossover.
Remember to be careful setting the gains and make sure they are not clipping the amplifier and causing harm to
the speakers. For more information on setting system gain controls please refer to the KQ30 Technical Manual or to
your buddy who has installed a few stereos in his dad’s garage!
Wiring using an x2i Crossover
Kicker SSMB Series Midbass Drivers
Recommended Applications / Version 2.0
Page 14
40
45
50
70
115
230
300
Low Pass
XOVER
OFF HI
PASS
LO
PASS
50 200
X-OVER
FREQ. (Hz)
Fig. 1
Fig. 2
Fig. 3
Fig. 4