SH73 Posted February 20, 2022 Share Posted February 20, 2022 I'm planning to build a 2x 12 bass cab. I've got a delimma , sealed bass cab or ported. I found some information that ported gives better frequency response and sealed may sound muddy but have more low end. I thought ported cabs give more low end. I've got a Fender rumble 100 and it's ported and the bottom end is deep, but with a 15 inch speaker. I'm looking for an overall solution maybe geared towards mid frequencies? I'm not into technical frequency graph response charts as they mean nothing to me. The question is sealed or ported? Any suggestions please? Quote Link to comment Share on other sites More sharing options...
Jus Lukin Posted February 20, 2022 Share Posted February 20, 2022 (edited) - Edited March 16, 2022 by Jus Lukin Quote Link to comment Share on other sites More sharing options...
SH73 Posted February 20, 2022 Author Share Posted February 20, 2022 Thanks, that what I was after as Steve Harris uses sealed Marshall cabinets with EV speakers. Quote Link to comment Share on other sites More sharing options...
itu Posted February 20, 2022 Share Posted February 20, 2022 Remember that the speaker has to be chosen after the cab: sealed construction needs different T/S parametres. Quote Link to comment Share on other sites More sharing options...
SH73 Posted February 21, 2022 Author Share Posted February 21, 2022 19 hours ago, itu said: Remember that the speaker has to be chosen after the cab: sealed construction needs different T/S parametres. Hi. Unfortunately that means nothing to me sorry, as I said the technical figures no comprendo. Don't know what T/S is without Googleing😁 but perhaps you could educate me Quote Link to comment Share on other sites More sharing options...
itu Posted February 21, 2022 Share Posted February 21, 2022 Thiele / Small. The parameters will tell you whether a certain element is meant to be put to a reflex or a closed enclosure. Read this short text: https://audiojudgement.com/thiele-small-parameters-explained/ 1 Quote Link to comment Share on other sites More sharing options...
SH73 Posted February 21, 2022 Author Share Posted February 21, 2022 This seems pretty heavy going, but is there a way of working out the dimensions of the cab if I know what speakers I'm using? Quote Link to comment Share on other sites More sharing options...
Boodang Posted February 21, 2022 Share Posted February 21, 2022 https://www.bluearan.co.uk/index.php?&category=Speaker_Building&masthead=Speaker_Plans&subheadnew=Bass_Reflex_Sub A lot of speaker manufacturers have cabinet designs to go with them. If you just use random dimensions it won't match the performance specs of the speakers. Don't try and work it out from scratch, use a tried and tested design. Just as a generality, I've found ported designs to be louder than sealed. Quote Link to comment Share on other sites More sharing options...
SH73 Posted February 21, 2022 Author Share Posted February 21, 2022 Surely if I know the speakers came from a 2x12 TC bass cab, I can use the cabinet specs to build it? Quote Link to comment Share on other sites More sharing options...
SH73 Posted February 21, 2022 Author Share Posted February 21, 2022 https://www.tcelectronic.com/product.html?modelCode=HE017 Quote Link to comment Share on other sites More sharing options...
itu Posted February 21, 2022 Share Posted February 21, 2022 Yes. If you want the size to be bigger, it is usually OK. efficiency - low end - cubic volume You make the enclosure smaller, either the efficiency becomes smaller, or the lowest reproducible frequency rises - or both. This is similar to the ISO - aperture - time trio in photography. Quote Link to comment Share on other sites More sharing options...
SH73 Posted February 21, 2022 Author Share Posted February 21, 2022 Thanks all, Iooks like lots of research ahead of building Quote Link to comment Share on other sites More sharing options...
SpondonBassed Posted February 22, 2022 Share Posted February 22, 2022 18 hours ago, SH73 said: Thanks all, Iooks like lots of research ahead of building Doing some homework that produces good results will usually give a long lasting sense of satisfaction. Good luck. 1 Quote Link to comment Share on other sites More sharing options...
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