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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: 205696" data-attributes="member: 10677"><p>Ok. so tried to put 8.2 Ohm in series with the HF and VHF, but the changes in frequency response was surprisingly small.</p><p></p><p>I am still having issues with a sharp dip at 4.8 kHz, which is something going on with the HF section, and the a strange rise/peak at 14 kHz. Both 'findings' are present even when using another mic.</p><p></p><p>This is a measurement of the HF Near field, laying on the edge of a table without the passive XO. Notice the dip at 4.8 kHz is on the HF, not at the XO point.</p><p></p><p>[ATTACH]205698[/ATTACH]</p><p></p><p>Measurement at 60cm on edge of a table with passive XO and the dip and peaks are showing quite well:</p><p>[ATTACH]205699[/ATTACH]</p></blockquote><p></p>
[QUOTE="Andy Turner, post: 205696, member: 10677"] Ok. so tried to put 8.2 Ohm in series with the HF and VHF, but the changes in frequency response was surprisingly small. I am still having issues with a sharp dip at 4.8 kHz, which is something going on with the HF section, and the a strange rise/peak at 14 kHz. Both 'findings' are present even when using another mic. This is a measurement of the HF Near field, laying on the edge of a table without the passive XO. Notice the dip at 4.8 kHz is on the HF, not at the XO point. [ATTACH=JSON]205698.vB5-nodeid=205698[/ATTACH] Measurement at 60cm on edge of a table with passive XO and the dip and peaks are showing quite well: [ATTACH=JSON]205699.vB5-nodeid=205699[/ATTACH] [/QUOTE]
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New DIY Mid High (90deg) - AKA PM90
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