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<blockquote data-quote="Mark Wilkinson" data-source="post: 141989" data-attributes="member: 8989">Re: 60 Degree&nbsp; DIY Mid HiHi Peter, Thanks for the ongoing support !Yes, I am using 8 ohm RCF&#039;s in parallel, and 16 ohm 4594s. My mid IIR settings are the ones you posted for the DIY 90, and the HF &amp; VHF settings from your 60 deg post... (snip below as HF example..)The only major difference in HF /VHF setting from yours, comes from only having 5 eq&#039;s per amp channel on the PLD4.5.&nbsp; So I&nbsp; keep polarity the same between the two coax drivers and don&#039;t use the last HF PEQ (6.158k, 0.76BW, +5.2db).&nbsp; This seems to level out x-over region ok....?[ATTACH]154376[/ATTACH]There were minor variations in freq, and BW, that the PLD amp wouldn&#039;t let me dial in exactly, but everything stayed pretty close.If needing to drop HF and VHF gain 3-4 db for the 60 deg is making sense, I&#039;ll let go of scratching my head <img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" />&nbsp; THX again to you and Don.Now, if I could only find an affordable FIR alternative to the Lake...<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f600.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":D" title="Big grin&nbsp; &nbsp; :D"&nbsp; data-smilie="8"data-shortname=":D" />~:-D~:grin:</blockquote>

[QUOTE="Mark Wilkinson, post: 141989, member: 8989"] Re: 60 Degree DIY Mid Hi Hi Peter, Thanks for the ongoing support ! Yes, I am using 8 ohm RCF's in parallel, and 16 ohm 4594s. My mid IIR settings are the ones you posted for the DIY 90, and the HF & VHF settings from your 60 deg post... (snip below as HF example..) The only major difference in HF /VHF setting from yours, comes from only having 5 eq's per amp channel on the PLD4.5. So I keep polarity the same between the two coax drivers and don't use the last HF PEQ (6.158k, 0.76BW, +5.2db). This seems to level out x-over region ok....? [ATTACH=CONFIG]154376.vB5-legacyid=13193[/ATTACH] There were minor variations in freq, and BW, that the PLD amp wouldn't let me dial in exactly, but everything stayed pretty close. If needing to drop HF and VHF gain 3-4 db for the 60 deg is making sense, I'll let go of scratching my head :) THX again to you and Don. Now, if I could only find an affordable FIR alternative to the Lake...:D~:-D~:grin: [/QUOTE]

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