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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Peter Morris" data-source="post: 132574" data-attributes="member: 652"><p>Re: New DIY Mid High</p><p></p><p></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Hi Uwe,</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Firstly thankyou for you input, its helping me improve this design.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">I am going to have a play with the crossover frequency and try some at 48dB and 24db per octave slopes and see if I can get an improvement.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Very few speaker manufactures publish this type of information. JBL have a new Precision Directivity installation range. Below are the PD6212/95 frequency response plots …. So I don’t think I’m doing too bad <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />~<img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />~:smile:, but hopefully with a bit of work I will be able to do better.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Did I look at building the mid-section the other way around – yes, I looked at every combination I could think of. There a couple of my idea below.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">The design criterion for this box was a speaker on a stick that had almost as much output as an EAW 850. It didn’t need to go quite as low as the 850 but it needed to go down to 100Hz. The problem with every other option I considered is that the box starts to get too big and heavy. </span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">This design has more or less no wasted space or weight. If you didn’t have the size and weight compromise it would be easy to build something like a Danley synergy horn.</span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'"></span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 132574, member: 652"] Re: New DIY Mid High [SIZE=3][COLOR=#000000][FONT=Calibri]Hi Uwe,[/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]Firstly thankyou for you input, its helping me improve this design. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]I am going to have a play with the crossover frequency and try some at 48dB and 24db per octave slopes and see if I can get an improvement. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]Very few speaker manufactures publish this type of information. JBL have a new Precision Directivity installation range. Below are the PD6212/95 frequency response plots …. So I don’t think I’m doing too bad :)~:-)~:smile:, but hopefully with a bit of work I will be able to do better. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]Did I look at building the mid-section the other way around – yes, I looked at every combination I could think of. There a couple of my idea below.[/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]The design criterion for this box was a speaker on a stick that had almost as much output as an EAW 850. It didn’t need to go quite as low as the 850 but it needed to go down to 100Hz. The problem with every other option I considered is that the box starts to get too big and heavy. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]This design has more or less no wasted space or weight. If you didn’t have the size and weight compromise it would be easy to build something like a Danley synergy horn. [/FONT][/COLOR][/SIZE] [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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