This is a tricky question, but one that does need addressing. While we're not adding any additional power, larger mid basses or subwoofers to the system, you will notice an overall improvement in bass response after installing your Terra Acoustics upgrades.
This is due to two factors: When we upgrade the front soundstage where the primary distortion occurs with the factory speakers, we're "leveling" the playing field with the larger mid bass and subwoofers (when the factory system is equipped) so there is a better balance of sound when the volume is turned up.
Secondly, your ears will hear an improvement (and your body will feel it) in the overall bass response as the factory mid basses and subwoofers can play at higher volumes without distortion coming into the soundstage as the Terra Acoustics upgrades are slightly less efficient and of much higher quality than the factory speakers that were replaced.