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<blockquote data-quote="Peter Morris" data-source="post: 141065" data-attributes="member: 652">Re: 60 Degree&nbsp; DIY Mid Hi - They need a name ?Yes I still have 12 Lab subs ... I did some big gigs with them when I first built them.Here is a plot of the Xmax - Its 8.6 mm at 1300 watts / 100Hz. Hence the 10mm spacer.&nbsp; Typically with a 100Hz 24dB LR crossover and some appropriate limiters I would expect more like the grey line i.e. 6 dB down at 100Hz which is about 4.5mm. The rated Xmax is 5.5mm.&nbsp; The compression ratio is 2.8 :1, so I would not expect that to cause any problems with the cone.I think you are correct, that you may have forgotten the HP filter and the compression driver terminal hit the cone....and yes cleaning your windshield absolutely makes sense. I suspect from now on, most PA speakers will sound like they have dirty windshields to you, and polishing the front grill won&#039;t help <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=":-)" /></blockquote>

[QUOTE="Peter Morris, post: 141065, member: 652"] Re: 60 Degree DIY Mid Hi - They need a name ? Yes I still have 12 Lab subs ... I did some big gigs with them when I first built them. Here is a plot of the Xmax - Its 8.6 mm at 1300 watts / 100Hz. Hence the 10mm spacer. Typically with a 100Hz 24dB LR crossover and some appropriate limiters I would expect more like the grey line i.e. 6 dB down at 100Hz which is about 4.5mm. The rated Xmax is 5.5mm. The compression ratio is 2.8 :1, so I would not expect that to cause any problems with the cone. I think you are correct, that you may have forgotten the HP filter and the compression driver terminal hit the cone. ...and yes cleaning your windshield absolutely makes sense. I suspect from now on, most PA speakers will sound like they have dirty windshields to you, and polishing the front grill won't help :-) [/QUOTE]

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