I did! Thanks for posting all that. No way will I do phase 2, but phase 1 doesn’t look too bad. The cab is working for me now obviously, but more natural low end would be welcome. I usually just boost lows a bit on my amp.
Cool your welcome, both phases of the mod are well worth doing yourself, or finding someone to help out with phase-2 if needed. I'll bet you wouldn't even have felt the need for purchasing that new custom-order cab from Duke if your 1544 had both of these mods preformed...
I used to try boosting my amps lows after only performing phase-1; It definitely helped a bit, but my 1544 simply couldn't reproduce very much deep-lowend until phase-2 of the mod was preformed. My 1544 still wont reproduce sub-woofer type lows, but my lower E-string notes all ring out in a very balanced way with authority now.
The 'Acoustic Filter Chamber' of Duke's 1544 was a very cool/unique design feature added to more closely simulate a sealed cab. I think he was really onto something extraordinary there. I truly believe the only short coming to this design feature was caused by the 1544's fairly small-physical size, this greatly limited the available space that was remaining for the lower chamber containing the 15" driver.
I really think Duke should experiment with building a new cab utilizing the Acoustic Filter Chamber feature again, but simply build it into a taller cab this time, so it could have a larger 12' or 15" speaker chamber....
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