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<blockquote data-quote="David Chrapla" data-source="post: 138493" data-attributes="member: 6362">Re: New DIY Mid HighThe only thing I saw that the fulcrum box did differently was to add their &quot;lens,&quot; to the system so that they could have additional horn length in a smaller than conventional way. Paraline can be done this way also and other ways to add additional length to the horn. BUT it is still another way of doing it.I would expect them to have to boost down low with what I can see. Looks like a straight horn with a &quot;lens,&quot; on the rear for the tens. Seems like another 150hz design but I am probably in correct. And for the size of that thing I would just go with the SH64. The dual 10 they made is 32&quot; x 32&quot;. That has a bigger mouth then the SH64 I would like to own. That is 34&quot; x 26.5&quot; and has four 15&#039;s and I think it will do 100hz ok. <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":D" title="Big grin&nbsp; &nbsp; :D"&nbsp; data-smilie="8"data-shortname=":D" />Many ways of doing a 100hz speaker. I like Peters idea so far over this linked one. It was also hard for me to see the dual CD horn when I know a paraline lens would have been better. But that is patented by DSL. So they had to do it another way.</blockquote>

[QUOTE="David Chrapla, post: 138493, member: 6362"] Re: New DIY Mid High The only thing I saw that the fulcrum box did differently was to add their "lens," to the system so that they could have additional horn length in a smaller than conventional way. Paraline can be done this way also and other ways to add additional length to the horn. BUT it is still another way of doing it. I would expect them to have to boost down low with what I can see. Looks like a straight horn with a "lens," on the rear for the tens. Seems like another 150hz design but I am probably in correct. And for the size of that thing I would just go with the SH64. The dual 10 they made is 32" x 32". That has a bigger mouth then the SH64 I would like to own. That is 34" x 26.5" and has four 15's and I think it will do 100hz ok. :D Many ways of doing a 100hz speaker. I like Peters idea so far over this linked one. It was also hard for me to see the dual CD horn when I know a paraline lens would have been better. But that is patented by DSL. So they had to do it another way. [/QUOTE]

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