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<blockquote data-quote="llebcire" data-source="post: 8530084" data-attributes="member: 671377">Wow - thanks for starting this off!After your post I checked out Class D and we were under the wrong impression the &quot;D&quot; stood for digital - but hey, that was 25 years ago <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile&nbsp; &nbsp; :)" loading="lazy" data-shortname=":)" />This thread is talking about sound quality and while I&#039;m almost 50 and can&#039;t hear like I could when I was 25, I used to judge an amp by the way it handled female vocals and instruments like horns (i.e. saxophone) at high volumes as many amps don&#039;t do well under this type of stress and sound harsh.&nbsp; I also found that when amps were clipping under this stress it would make my ears ring where amps like the Lanzar would allow me to listen at high volumes for extended periods of time without walking away with ringing ears.I noticed that many of the old &quot;Made in America&quot; amps have changed significantly and now people are using brands I&#039;ve never heard of - time for some research!Interesting you bring up sealed vs. ported as that&#039;s exactly the way we thought.&nbsp; Sealed for slower roll-off on the bottom end, ported for bump in output and &quot;usually&quot; not as musical (certainly were exceptions), band-pass sounded like an air pump more than a speaker (especially higher order) and few (if any) used transmission line in a car.&nbsp; Additionally, 12&quot; drivers always seemed to hit the &quot;sweet spot&quot; of output (vs. 10&#039;s) and transient response (vs. 15&#039;s) and I&#039;m planning on a single 12 in my car.You also mention that almost all subs sound good now with enhanced modeling software?&nbsp; What - no one uses the Loudspeaker Design Cookbook?&nbsp; Lol.&nbsp; I have a friend who wants to see me a older (but never used/still in box) 12&quot; Alpine Type R and until last week I wouldn&#039;t have ever considered an Alpine for anything other than a head unit.&nbsp; The reviews I read seem to like the driver but I&#039;m curious as to what the reviewers listen to.&nbsp; I love rap and bass heavy music but I&#039;ll also listen to Jazz, Rock, etc. based on my mood and I need to hear one of these drivers.I say a video on here (2005 Altima build thread) where one 12 was flexing the car.&nbsp; That amazes me!&nbsp; We would need 4 18&#039;s in a diamond shaped box to accomplish that.-Eric</blockquote>

[QUOTE="llebcire, post: 8530084, member: 671377"] Wow - thanks for starting this off! After your post I checked out Class D and we were under the wrong impression the "D" stood for digital - but hey, that was 25 years ago :-) This thread is talking about sound quality and while I'm almost 50 and can't hear like I could when I was 25, I used to judge an amp by the way it handled female vocals and instruments like horns (i.e. saxophone) at high volumes as many amps don't do well under this type of stress and sound harsh. I also found that when amps were clipping under this stress it would make my ears ring where amps like the Lanzar would allow me to listen at high volumes for extended periods of time without walking away with ringing ears. I noticed that many of the old "Made in America" amps have changed significantly and now people are using brands I've never heard of - time for some research! Interesting you bring up sealed vs. ported as that's exactly the way we thought. Sealed for slower roll-off on the bottom end, ported for bump in output and "usually" not as musical (certainly were exceptions), band-pass sounded like an air pump more than a speaker (especially higher order) and few (if any) used transmission line in a car. Additionally, 12" drivers always seemed to hit the "sweet spot" of output (vs. 10's) and transient response (vs. 15's) and I'm planning on a single 12 in my car. You also mention that almost all subs sound good now with enhanced modeling software? What - no one uses the Loudspeaker Design Cookbook? Lol. I have a friend who wants to see me a older (but never used/still in box) 12" Alpine Type R and until last week I wouldn't have ever considered an Alpine for anything other than a head unit. The reviews I read seem to like the driver but I'm curious as to what the reviewers listen to. I love rap and bass heavy music but I'll also listen to Jazz, Rock, etc. based on my mood and I need to hear one of these drivers. I say a video on here (2005 Altima build thread) where one 12 was flexing the car. That amazes me! We would need 4 18's in a diamond shaped box to accomplish that. -Eric [/QUOTE]

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