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Low Earth Orbit
DIY Audio
New DIY Mid High (90deg) - AKA PM90
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<blockquote data-quote="Andy Turner" data-source="post: 204669" data-attributes="member: 10677"><p>Hi Peter Morris.</p><p></p><p>First I wan't to thank you for your time, and for sharing your knowledge and experience.</p><p></p><p>I did try the DSP suggested in post 315, - but I was a little reluctant as these are for the 3way all active setup?.</p><p></p><p>Anyway I tried it on a Powersoft dsp amp after converting Bandwith to Q, but the sound was not right.</p><p></p><p>I also tried the double 10 settings, which looks very much like the ones I figured out myself, but again the sound is harsh and has quite a bit to much treble for my taste.</p><p></p><p>I have 1.5 ms delay on the BMS.</p><p></p><p>One thing I have learned is that a good FR is is never any better than the measurement.</p><p>When measuring on axis and adjusting to be within even +/- 2db, the sound is no good.</p><p></p><p>I also tried 'tailoring' the FR to a d&b Q7 including some PEQ to my taste, - just to copy the 'sound design if you will, - but still no good. I know it can not be done in that way because there are many many other factors, but still, - just to see if it was pure tonal issues that could be fixed in that simple manner. But no.</p><p></p><p>It is not possible to read the values on the caps without de-soldering. I have attached some very experimental impedance measurements, -maybe they can give an indication. I have also measured the DC to be VHF: 6.8Ohm and HF: 8.5Ohm.</p><p></p><p>Imp: BMS including passive X-over:</p><p>[ATTACH]204671[/ATTACH]</p><p></p><p></p><p>Thanks again.</p><p></p><p>Andy</p></blockquote><p></p>
[QUOTE="Andy Turner, post: 204669, member: 10677"] Hi Peter Morris. First I wan't to thank you for your time, and for sharing your knowledge and experience. I did try the DSP suggested in post 315, - but I was a little reluctant as these are for the 3way all active setup?. Anyway I tried it on a Powersoft dsp amp after converting Bandwith to Q, but the sound was not right. I also tried the double 10 settings, which looks very much like the ones I figured out myself, but again the sound is harsh and has quite a bit to much treble for my taste. I have 1.5 ms delay on the BMS. One thing I have learned is that a good FR is is never any better than the measurement. When measuring on axis and adjusting to be within even +/- 2db, the sound is no good. I also tried 'tailoring' the FR to a d&b Q7 including some PEQ to my taste, - just to copy the 'sound design if you will, - but still no good. I know it can not be done in that way because there are many many other factors, but still, - just to see if it was pure tonal issues that could be fixed in that simple manner. But no. It is not possible to read the values on the caps without de-soldering. I have attached some very experimental impedance measurements, -maybe they can give an indication. I have also measured the DC to be VHF: 6.8Ohm and HF: 8.5Ohm. Imp: BMS including passive X-over: [ATTACH=JSON]204671.vB5-nodeid=204671[/ATTACH] Thanks again. Andy [/QUOTE]
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