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Low Earth Orbit
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New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Peter Morris" data-source="post: 137302" 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'">My take is possibly slightly different (?). I have qualifications in both electrical and mechanical engineering; so with an electro-mechanical system I like to look at the whole system as one. </span></span></span></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">I would suggest that as a transducer or speaker designer this gives you more freedom to optimise your design. If transduces or enclosures response does not have to be flat because it can be corrected with DSP then the focus can be on other aspects of the design so you can achieve better results in total – perhaps lower distortion or increase SPL etc.</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 is exactly what I have done in this case. I knew from the start that the response of the mid was not going to be flat. My criteria for this box were size and weight - it had to be capable of being mounted on a stick. The combination of a ported horn gave me more SPL than any other combination I could find, but the maximum frequency was limited to about 800Hz.</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'">As a transduce designer however I’m sure you should try to produce a flat frequency response, it would be hard to sell anything else. </span></span></span></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">FWIW the IIR settings for the plots I posted used 2 shelving filters and 2 PEQs for the mids, 3 x PEQs for the HF and 1 x PEQ for the VHF.</span></span></span></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">Peter</span></span></span></p><p></p><p><span style="font-size: 12px"><span style="color: #000000"><span style="font-family: 'Calibri'">PS love the design of your 10”that you posted. Want some of those to play with :nod:.</span></span></span></p></blockquote><p></p>
[QUOTE="Peter Morris, post: 137302, member: 652"] Re: New DIY Mid High [SIZE=3][COLOR=#000000][FONT=Calibri]My take is possibly slightly different (?). I have qualifications in both electrical and mechanical engineering; so with an electro-mechanical system I like to look at the whole system as one. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]I would suggest that as a transducer or speaker designer this gives you more freedom to optimise your design. If transduces or enclosures response does not have to be flat because it can be corrected with DSP then the focus can be on other aspects of the design so you can achieve better results in total – perhaps lower distortion or increase SPL etc. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]This is exactly what I have done in this case. I knew from the start that the response of the mid was not going to be flat. My criteria for this box were size and weight - it had to be capable of being mounted on a stick. The combination of a ported horn gave me more SPL than any other combination I could find, but the maximum frequency was limited to about 800Hz. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]As a transduce designer however I’m sure you should try to produce a flat frequency response, it would be hard to sell anything else. [/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]FWIW the IIR settings for the plots I posted used 2 shelving filters and 2 PEQs for the mids, 3 x PEQs for the HF and 1 x PEQ for the VHF.[/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]Peter[/FONT][/COLOR][/SIZE] [SIZE=3][COLOR=#000000][FONT=Calibri]PS love the design of your 10”that you posted. Want some of those to play with :nod:.[/FONT][/COLOR][/SIZE] [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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