Hello,
I just received a pair of TA6FC00-04's for getting into Speaker building. I have very little audio experience, apart from playing around with a Teensy Audio board, for adding an EQ to my Bose Mini Soundlink. I am also planning on using it for some DSP to balance the room, and attenuate the highs the bring them closer to the level of the lows. It is only 16bit, 44KHz, so its only a way to get my feet wet. Programming it is very simple, and to my untrained ears, sound great.
I was going to build a TABAQ mini for these, but I think I like the look of a back loaded horn more. I use the following calculator: bgaudio.org
My question is what to put down for the upper and lower frequency. Is the "Horn" only used for the lower frequencies, with the mids and highs coming out of the driver mounted on the baffle? Or am I understanding this thing wrong. It seems like playing with the Upper frequency changes the volume of the compression chamber.
I just received a pair of TA6FC00-04's for getting into Speaker building. I have very little audio experience, apart from playing around with a Teensy Audio board, for adding an EQ to my Bose Mini Soundlink. I am also planning on using it for some DSP to balance the room, and attenuate the highs the bring them closer to the level of the lows. It is only 16bit, 44KHz, so its only a way to get my feet wet. Programming it is very simple, and to my untrained ears, sound great.
I was going to build a TABAQ mini for these, but I think I like the look of a back loaded horn more. I use the following calculator: bgaudio.org
My question is what to put down for the upper and lower frequency. Is the "Horn" only used for the lower frequencies, with the mids and highs coming out of the driver mounted on the baffle? Or am I understanding this thing wrong. It seems like playing with the Upper frequency changes the volume of the compression chamber.
No, you are quite correct. A back-horn is like any other type of back load (e.g. the bass reflex, which it is a [very] distant cousin of): it's only usable over a limited LF BW, ideally up to the mass-corner of the driver. Above that, you want a decent acoustic low pass to keep group delay down and prevent obvious colourations. That's what the low pass chamber is for (in 99.999% of back horns the room is the compression chamber).
Not to deter you from going down the horn path, but they are quite a bit more complicated than other alignments.
If you want to know way more about horns than you ever wanted to, visit Quarter Wavelength Loudspeaker Design and read through the excellent information Martin has kindly published. His articles on horns explain the difference between mass loading and horn loading and the gray area in between.
If you want to know way more about horns than you ever wanted to, visit Quarter Wavelength Loudspeaker Design and read through the excellent information Martin has kindly published. His articles on horns explain the difference between mass loading and horn loading and the gray area in between.
Martin's site is or should be default reading for anyone interested in the subject. He'd go into orbit if anyone suggested 'grey' areas between enclosure types though. 😉 Don't say you haven't been warned. 😀
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There are some who might speak of "points along a continuum" - but yes, I can imagine Martin turning a bit red under the color over the talk of such "grey" areas.
My apologies, I was merely using it as a figure of speech. I should have said the "compromised horn" area between transmission line and horn alignments 😉
Thank you very much for the comments. I am working my way through the Quarter Wave site. Very interesting ����. I have access to a cnc router and more than enough extruded basement insulation foam for prototyping. After the prototypes i hope to make it out of laminated bamboo
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