Centre post on Marshall 4X12” cabs?

[markh]

Don't be afraid to put some stuffing in there if you are playing faster/tighter things to take the R1 reflection down a couple decibels (or more) as well.

This is another trick of reamp that uses or reveals the potential of the resonance and tuning. With just an average stock cabinet, hamner-on some low notes while adjusting the volume until the internal reflection of the cabinet is equal with the fundamental. It is a little complex to imagine, but if you sit in the floor in front of the cab and ride the rig master volume you can clearly hear the threshold when the reflection comes equal to everything else.

That is how you make insane dirty guitars sound like screaming animals on recordings. A hidden sweet-spot. It is not as loud as you probably imagine!

Maybe it is!

The trick with matching the internal reflection to the fundamental is gold. It really does create that wild, almost vocal character in the tone if you hit it right

How do you achieve this Mark?

Lol, I didn't even see we have the same name, anyway, the way I go about it is pretty much how Reeltarded described, I’ll sit directly in front of the cab, usually on the floor, and start slowly raising the master volume while hitting some low notes, especially with palm muting or hammer-ons. At a certain point, you’ll hear the cabinet almost “sing” with the note, like it’s resonating perfectly. That’s when the internal reflections line up with the fundamental.

Once I find that sweet spot, I’ll fine-tune the amp’s EQ just a bit to lock it in. It’s subtle, but once you hear it, you’ll know