Quote Originally Posted by voice of the theater View Post
Now you guys have got me wondering if there are any leaks in my Model 19 or Model 14 cabinets.
Again, at least way back when, designers either allowed for a typical amount of leaks due to manufacturing tolerances and/or intentionally designed them in such as the M19 not having any gasketing between its two cab sections and 811 mounting, so in a 'worst' case scenario, removing all leaks will lower the cab's tuning (Fb) which one may, may not prefer depending on how they sound in-room with all the variables this implies.

Personally, I would seal up any lossy cabs and then re-tune them in-room to suit if necessary since factory tunings are almost always a compromise and at the very least tends to 'sharpen up' the woofer's perceived response, but so many folks think the M19 is [near] perfect as is, so may not be worth the effort for them.

Assuming a relatively 'still' room WRT airflow, a candle, smoke or similar will find all of them worth plugging while driving the cab around/at driver Fs at some high enough SPL to see obvious cone excursion with the vent blocked off [densely stuffed with rags/whatever].

Then there's the folks that just spray a soapy liquid on all the potential leaking areas and look for bubbles except any exposed MDF could be problematic. Wonder if baby shampoo thinned with alcohol would blow bubbles without blistering MDF?

GM