Create voluminous bass drums

It happens that I use several bass drums at the same time. For example, I sometimes use a very short delay to match the attack and sustain of the sounds. Then I use the SPL Transient Designer to emphasize the attack. For another sound, I use bx_boom! and a Moog filter, for example. Then I group the sounds to ensure mono compatibility of all frequencies below 350 Hz with the bx_digital V2 equalizer. Then I record them with the Waves Abbey Road Collection virtual tape machine at a slow tape speed. I then send the result through Waves LoAir in parallel, experimenting with signal levels as the song progresses and just having fun while looking at my trusty DK Audio Meter.