Can you measure the tuning of the Aggie?
salt on a tilted back cone and a sine wave generator sending a couple volts - at tuning the salt stops jumping
If that come out around 45/47 Hz then you can get the same tonal profile as your top cab [though you might well hit a chuff limit]. If the tuning is off or you get chuffing at high output [one or both is likely] you could do surgery to the cab port and try and fix it. But it'd be a shame to mess up the Aggie IMO and given you'll be buying a driver and an xover in either event, selling the Aggie and getting a 12/sub flatpack from Leland at speaker hardware [$125 +hardware] might well be less work, less money net out of pocket, and give spot on performance.
That's what I would do. YMMV
salt on a tilted back cone and a sine wave generator sending a couple volts - at tuning the salt stops jumping
If that come out around 45/47 Hz then you can get the same tonal profile as your top cab [though you might well hit a chuff limit]. If the tuning is off or you get chuffing at high output [one or both is likely] you could do surgery to the cab port and try and fix it. But it'd be a shame to mess up the Aggie IMO and given you'll be buying a driver and an xover in either event, selling the Aggie and getting a 12/sub flatpack from Leland at speaker hardware [$125 +hardware] might well be less work, less money net out of pocket, and give spot on performance.
That's what I would do. YMMV