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SOLID AMPLIFIER
User manual
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2.7) Connect the ground supply wire to the battery
Make sure once more that all the previous steps of the installation have been respected.
Check the state of connection of the different wires on the amplifier, the fuse-box as well as the battery. If all is correctly plugged-in, end the
installation by connecting the ground supply wire to the vehicle battery.
3) Setting of your audio system
3.1) GAIN setting (from the amplifier potentiometer or via the remote control)
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Increasing the input GAIN value doesn't mean more power, but rather more noise. The GAIN setting is not a power setting.
The SOLID amplifiers are provided with an adjustable GAIN. This potentiometer permits to make the signal input tension vary between
200mV and 5V in order to make the amplifier input tension correspond to the source output tension. It is often better to rise the output level
of the source to its "maximum". It means that you have to find the maximum output level of the head unit before any audible distortion
appears. Once it is done, it is also better to maintain the GAIN level of the amplifier to the lowest possible value. It will have the effect to
optimize the sound quality through a better signal/noise ratio.
How to set the input GAIN of the amplifier?
3.1.1) Lower completely the input GAIN of the amplifier as well as the BASS BOOST (only available with the Solid 1 amplifier).
3.1.2) Adjust the sound level of the head unit to its maximum value (value until which no distortion is audible).
3.1.3) Rise the GAIN level of the amplifier until you hear a distortion, then slightly lower the GAIN level until the total disappearance of this
distortion.
3.2) High-pass and low-pass filter setting
3.2.1) High-pass filter (HPF) setting 12dB/oct.
The high-pass filter permits to determine the frequency from which the signal will be amplified and then conveyed to the speakers. This
setting permits:
• to avoid the dissipation of the amplification power on frequencies that are not retranscribed by the speakers (see "speaker specifications"
to know the lowest frequency that is retranscribed by the speaker kit).
• to optimize the speaker/subwoofer (or bass enclosure) coupling while avoiding the speakers and the subwoofer to retranscribe an
identical frequency range.
Put the cursor on the "HPF" position then choose the suitable value.
3.2.2) Low-pass filter setting (LPF) 12dB/oct.
The low-pass filter permits to determine the frequency until which the signal is amplified and then conveyed to the subwoofer. This setting
permits:
• to avoid the dissipation of the amplification power on frequencies that are not retranscribed by the subwoofer.
• to optimize the subwoofer/speaker coupling by avoiding the subwoofer and the speakers to retranscribe an identical frequency range.
Put the cursor on the "LPF" position then choose the suitable value.
It is recommended to choose an identical cut-off frequency (high-pass and low-pass) in order to ensure a perfect speaker/subwoofer
coupling.
3.2.3) PHASE setting (only available with Solid 1 amplifier)
This setting permits to put the subwoofer in phase with the rest of the installation (speakers). The cursor has 2 positions: 0° and 180°. In
order to make sure of the good phase setting of the subwoofer with the rest of the installation, you just have to sit down on the driver's seat
and to make the cursor position vary between the two values. The good value will be the one with which you will notice a rise of the bass
level in the vehicle.
3.2.4) SUBSONIC filter setting (only available with the Solid 1 amplifier).
The SUBSONIC filter (35Hz - 24dB/oct) permits to determine the frequency from which the signal is amplified and then conveyed to the
subwoofer. It avoids the dissipation of the amplification power on frequency ranges that are not retranscribed by the subwoofer, but it also
protects the subwoofer from the potentially dangerous frequencies.
It
is highly recommended to activate the SUBSONIC filter.
3.2.5) BASS BOOST setting (only available with the Solid 1 amplifier)
This setting permits to rise the bass level. The BASS BOOST central frequency is steady (60Hz). This setting permits to personalize the
amplification according to your listening typology and your musical tastes.
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To have a high BASS BOOST level doesn't mean that the sound quality is better.
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