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<blockquote data-quote="Peter Morris" data-source="post: 138144" data-attributes="member: 652">Re: New DIY Mid HighA couple of points / answers –-&nbsp; &nbsp; &nbsp; &nbsp; I used an RCF HF950 horn. Its their newest horn flare and is used in their new TT2a&nbsp; and TT5a-&nbsp; &nbsp; &nbsp; &nbsp; All of the components I used are amongst the very best you can buy.-&nbsp; &nbsp; &nbsp; &nbsp; The HF950 has a 400 Hz cut off frequency and reasonable directivity down to about 1000Hz.-&nbsp; &nbsp; &nbsp; &nbsp; The HF64, as you noted does not have the pattern control down as low as the 950 or 1464 nor is its cut off frequency as low.-&nbsp; &nbsp; &nbsp; &nbsp; The HF6040 is 2” and is too big.-&nbsp; &nbsp; &nbsp; &nbsp; The 18sound XT1460 and the HF950 are quite affordable.-&nbsp; &nbsp; &nbsp; &nbsp; The XT1464 will require the box to be slightly deeper … 10 – 20 mm-&nbsp; &nbsp; &nbsp; &nbsp; You could make the box trapezoidal … but it would be almost impossible to make as a DIY.&nbsp; For the 60 degree version I’m planning to build a square box and cut the back corners off. This&nbsp; &nbsp; &nbsp; should make it look a little smaller and it should be a&nbsp; &nbsp; little better when arraying 2 boxes.-&nbsp; &nbsp; &nbsp; &nbsp; The 12NDL76 SIMs very well.&nbsp; When I have some spare time I will try them.</blockquote>

[QUOTE="Peter Morris, post: 138144, member: 652"] Re: New DIY Mid High A couple of points / answers – - I used an RCF HF950 horn. Its their newest horn flare and is used in their new TT2a and TT5a - All of the components I used are amongst the very best you can buy. - The HF950 has a 400 Hz cut off frequency and reasonable directivity down to about 1000Hz. - The HF64, as you noted does not have the pattern control down as low as the 950 or 1464 nor is its cut off frequency as low. - The HF6040 is 2” and is too big. - The 18sound XT1460 and the HF950 are quite affordable. - The XT1464 will require the box to be slightly deeper … 10 – 20 mm - You could make the box trapezoidal … but it would be almost impossible to make as a DIY. For the 60 degree version I’m planning to build a square box and cut the back corners off. This should make it look a little smaller and it should be a little better when arraying 2 boxes. - The 12NDL76 SIMs very well. When I have some spare time I will try them. [/QUOTE]

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