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It is a dry fit a present so I think the higher volumes are doing odd things to the air flow. But in general TLs aren't used that often in hifi because of the inherent colouration and tend to be efficient at lower volumes so I guess maybe it's going to go funny in a stage situation regardless. I think it would make a great studio/home cab but isn't going to rival traditional designs for stage use really. It has a great character and the driver sound isn't lost in there but as any port will give colouration to the sound, it is just emphasised with the TL. I apologise for what many people will consider waffle but this really is a listening test rather than a measured response!

hi It's a Gallien Krueger replacement 12" 200w 4ohms running off an Ashdown MAG 250 head They often use a horn type position in hifi speakers, so it is set in the cabinet with a heavy bevel to the opening

And as an extra bonus my fretless sounds really double bassy through it!

I know it's not going to be perfect by a long shot, hence why I say trial and error. This isn't too serious and in no way a measured experiment! I don't think this will really help anyone else who has thought about this but I have put it together and will give a quick review of it: Pros; 'Chest thump' at low volumes No harshness Good 'low B' response from a 12" speaker Not as heavy as I thought it would be Response is fairly even Cons; Not enough top end for some people Colouration overwhelming at higher volumes Overall; I like it, capable of giving a good tonal range and I like feeling the bass without having to turn it up Not sure if I would gig it but i'm happy. If someone was going to do it properly then I don't think they would be making the last cab they will ever use but it has it's niche!

Having heard transmission lines in hifi there is something about the sound that I like Whether that will come through in a bass cab I will find out but like much audio there's trial and error and personal taste I'm not using software just rough equations. I will say for anyone who wants to gig one it's getting pretty heavy! I am probably going to line rather than stuff the TL

Both fair points thanks. It is more an experiment than something I will be gigging! Just curious to see what it sounds like, my line works out at about 2.5 metres

Has anyone tried building a transmission line cab? I have started, and being that the maths involved is really hard, I got a bit confused but think i'm in the right place. Having no idea how it's going to sound I was curious of anyone elses' experience. I can post photos if anyone is interested

Just wanted to say thanks for the great bass and case and all very well packaged and shipped easily from Germany. If you do ever have anything else interesting for sale I would definitely want to know! Regards Stuart