Al Heeley Posted August 30, 2016 Share Posted August 30, 2016 (edited) Whilst checking the wiring of my hartke 410 XL cab I saw that both port tubes had fallen off inside the cab. The tubes are cardboard, about 10" long and around 3" dia. Can't tell how long its been like that, they may have fallen off ages ago?! What function do they serve and what will the sound difference be when I glue them back in place, or should I not bother? Edited August 30, 2016 by Al Heeley Quote Link to comment Share on other sites More sharing options...
Bill Fitzmaurice Posted August 30, 2016 Share Posted August 30, 2016 They're not optional, they're critical. I should imagine your tone is very boomy without them. Quote Link to comment Share on other sites More sharing options...
Al Heeley Posted August 30, 2016 Author Share Posted August 30, 2016 pity they didn't fix them in very well. Hope my glue repair job lasts till next gig.... Quote Link to comment Share on other sites More sharing options...
hubrad Posted August 30, 2016 Share Posted August 30, 2016 [quote name='Al Heeley' timestamp='1472562621' post='3122121'] pity they didn't fix them in very well. Hope my glue repair job lasts till next gig.... [/quote] Gorilla Glue! I've just used it for the first time.. verrry sticky! Quote Link to comment Share on other sites More sharing options...
Phil Starr Posted August 30, 2016 Share Posted August 30, 2016 Bill's right, they tune your cab to the best frequency for your speakers, without them the bass response will be all over the place, more importantly the power handling of your speakers will be reduced and you could end up damaging them terminally if you operate them at high volumes with lots of bass. Quote Link to comment Share on other sites More sharing options...
Al Heeley Posted August 30, 2016 Author Share Posted August 30, 2016 Thanks guys, they are back in place now, will see the difference at the next gig. I thought it sounded a bit boomy when I played last weekend.... Quote Link to comment Share on other sites More sharing options...
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