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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: 137600" data-attributes="member: 652"><p>Re: New DIY Mid High</p><p></p><p></p><p></p><p><span style="font-family: 'arial'"><span style="font-size: 12px"><span style="color: #000000">Hi Roy,</span></span></span></p><p><span style="font-family: 'arial'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'arial'"><span style="font-size: 12px"><span style="color: #000000">Yes I’m happy to draw up some plans, but I must stress a few points.</span></span></span></p><p><span style="font-family: 'arial'"><span style="font-size: 12px"><span style="color: #000000"></span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">This is only a <strong>prototype -</strong> to test if the idea / design would work and look for improvements, especially through input from this forum (thx everyone so far) </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">The BMS 4594ND is more or less a must.</span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">The compression driver needs to go down to about 600 Hz – 800 Hz and still maintain a very high output. </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">The box will not work if the crossover point is above 800Hz </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">HE version of the 4594 is not necessary </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">A passive HF – VHF crossover could be used.</span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">An electronic crossover that can provide at least 3 PEQs per band is required. </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">It will work without FIR processing.</span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">The HF horn needs a cut-off frequency around 400Hz or less.</span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">The horn should be an RCF HF950 or Eighteen Sound XT1464. </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">Some slight modifications to the box design may be needed to accommodate the XT1464 </span></span></span></p><p><span style="font-family: 'arial'"><span style="color: #000000"><span style="font-size: 12px">·</span> <span style="font-size: 12px">You will need some experience with Smaart, Systune to ensure that the results you are getting are optimum. </span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 137600, member: 652"] Re: New DIY Mid High [FONT=arial][SIZE=3][COLOR=#000000]Hi Roy,[/COLOR][/SIZE] [SIZE=3][COLOR=#000000] Yes I’m happy to draw up some plans, but I must stress a few points. [/COLOR][/SIZE] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]This is only a [B]prototype -[/B] to test if the idea / design would work and look for improvements, especially through input from this forum (thx everyone so far) [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]The BMS 4594ND is more or less a must.[/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]The compression driver needs to go down to about 600 Hz – 800 Hz and still maintain a very high output. [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]The box will not work if the crossover point is above 800Hz [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]HE version of the 4594 is not necessary [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]A passive HF – VHF crossover could be used.[/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]An electronic crossover that can provide at least 3 PEQs per band is required. [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]It will work without FIR processing.[/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]The HF horn needs a cut-off frequency around 400Hz or less.[/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]The horn should be an RCF HF950 or Eighteen Sound XT1464. [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]Some slight modifications to the box design may be needed to accommodate the XT1464 [/SIZE][/COLOR] [COLOR=#000000][SIZE=3]·[/SIZE] [SIZE=3]You will need some experience with Smaart, Systune to ensure that the results you are getting are optimum. [/SIZE][/COLOR][/FONT] [/QUOTE]
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