Jus Lukin Posted August 7, 2021 Share Posted August 7, 2021 (edited) - Edited March 15, 2022 by Jus Lukin Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted August 7, 2021 Share Posted August 7, 2021 My Acme cabinets are rear ported. As long as there is a reasonable distance away from a wall they are unaffected. 1 Quote Link to comment Share on other sites More sharing options...
deepbass5 Posted August 7, 2021 Share Posted August 7, 2021 😁 My two Acme lowB series III are front ported 👍, and will remain with me now till the end. But I have previously bought lots a cabs by looks or name and believed the sales hype. but we live and learn. 1 Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted August 7, 2021 Share Posted August 7, 2021 Another Acme user!!!! Yea! Whoda thunk! Quote Link to comment Share on other sites More sharing options...
Stub Mandrel Posted August 8, 2021 Share Posted August 8, 2021 I will bring a rear ported cab to the Midlands Bass Bash. People can decide if it's inadequate for themselves 🙂 Quote Link to comment Share on other sites More sharing options...
Downunderwonder Posted August 8, 2021 Share Posted August 8, 2021 20 hours ago, Phil Starr said: Once the port starts vibrating it pushes back at the air inside and if you get it right the cone of the speaker stops moving and all the sound output is coming from the port Meh. If the speaker isn't moving there won't be any sound at all! I think it comes from the rice test. The rice sits on the cone at resonance because it gets a nice smooth ride, not because the cone magically stops moving. Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted August 8, 2021 Share Posted August 8, 2021 (edited) The cone doesn't stop moving, but it moves a lot less at the tuning frequency. This excursion chart shows a fifteen in a ported cab with 45 Hz tuning at 200 watts input. At 1 watt input excursion at 45 Hz is a mere 0.07mm, so while not immobile it can appear that way compared to above and below that. Edited August 8, 2021 by Bill Fitzmaurice 2 1 Quote Link to comment Share on other sites More sharing options...
acidbass Posted August 9, 2021 Author Share Posted August 9, 2021 On 07/08/2021 at 19:00, BassmanPaul said: My Acme cabinets are rear ported. As long as there is a reasonable distance away from a wall they are unaffected. For most of the gigs I do, this is just not practical, hence why front porting (in my opinion) sounds a lot better in most rooms. Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted August 19, 2021 Share Posted August 19, 2021 On 09/08/2021 at 08:38, acidbass said: For most of the gigs I do, this is just not practical, hence why front porting (in my opinion) sounds a lot better in most rooms. The distance only needs to be a few inches. Just saying' 2 Quote Link to comment Share on other sites More sharing options...
funkle Posted August 20, 2021 Share Posted August 20, 2021 On 07/08/2021 at 13:51, Bill Fitzmaurice said: Quite right. The better method is to take the eyes out of the equation via double blind testing. I can't recall any such testing ever being posted on a bass forum. If it was undertaken the results would likely be quite interesting, as in this case: http://seanolive.blogspot.com/2009/04/dishonesty-of-sighted-audio-product.html Beautiful. I’d love to see this replicated with bass cabs. Quote Link to comment Share on other sites More sharing options...
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