Subwoofer/amp addon

[Iforclose]

I wanted to give my g90 a little more oompf it's a 2017. Does anyone know the maximum wattage I can run on amplofier? I do not want to cause any damage said the interface systems or leave the battery not charging properly.

 

[pulsar]

Unless you plan on turning your car into a thumper, you should not have battery or alternator issues with typical amps. When I used to install separate amps per speaker group (high school days), amps were big, heavily heat-sinked and could suck down some current. I ran a separate battery with isolator in my trunk back then. Amps these days are more efficient, lighter and do not get as hot as the older styles. You could easily run a 400 watt amp in bridged mode or in 200 watts per channel mode and your electrical system won’t know it’s there. That is enough watts to give a 10 to 12 inch sub-woofer some good bass. Your biggest challenge may be tying the amp to the factory head unit. Good amps will want a low-level RCA connection from the head unit. Using hi-level speaker outputs off the head unit will work, but your amp needs a crossover built in so you filter out the highs and only send low frequency to your sub if you want the best sound. Hi-level hookups are also not a clean or distortion free as low level connections. I used to run separate amps for each speaker group, all running thru a good crossover so each speaker group only saw the frequency range intended. My prior systems averaged about 1200 watts total which is nothing now for some installations. From AC/DC to jazz, my systems sounded really nice. I’m in my 50’s these days and have no desire to use trunk space for subs and amps and running all the connections required under the carpet.

 

[Bbypnda]

Unless you plan on turning your car into a thumper, you should not have battery or alternator issues with typical amps. When I used to install separate amps per speaker group (high school days), amps were big, heavily heat-sinked and could suck down some current. I ran a separate battery with isolator in my trunk back then. Amps these days are more efficient, lighter and do not get as hot as the older styles. You could easily run a 400 watt amp in bridged mode or in 200 watts per channel mode and your electrical system won’t know it’s there. That is enough watts to give a 10 to 12 inch sub-woofer some good bass. Your biggest challenge may be tying the amp to the factory head unit. Good amps will want a low-level RCA connection from the head unit. Using hi-level speaker outputs off the head unit will work, but your amp needs a crossover built in so you filter out the highs and only send low frequency to your sub if you want the best sound. Hi-level hookups are also not a clean or distortion free as low level connections. I used to run separate amps for each speaker group, all running thru a good crossover so each speaker group only saw the frequency range intended. My prior systems averaged about 1200 watts total which is nothing now for some installations. From AC/DC to jazz, my systems sounded really nice. I’m in my 50’s these days and have no desire to use trunk space for subs and amps and running all the connections required under the carpet.

I’d recommend a good line output converter. IIRC David navone makes good LOC. Then you can hook into your amp without any fancy integrators. Although integrators like a jbl ms-8 will give you massive customization.

 

[carguy75]

I wanted to give my g90 a little more oompf it's a 2017. Does anyone know the maximum wattage I can run on amplofier? I do not want to cause any damage said the interface systems or leave the battery not charging properly.

I personally would only use an aftermarket amp that requires less than 100amps of current to reduce the strain on the electrical system. Most modern digital amps can provide around 500 watts rms or more of sound wattage with only needing about 40amps of current which is not a much of a strain on the stock electrical charging system.

However, I recommend buying an external battery charger to fully charge your car battery at least once a month since the charging capacity of the alternator will be diminished when you add an addition load to the stock charging system. The stock charging system is designed for the stock electrical load not accounting for extra current drain from aftermarket amplifiers.