Reply to thread

Message

<blockquote data-quote="hispls" data-source="post: 8114157" data-attributes="member: 614752">This is some of the worst information I&#039;ve seen posted on this site this year.Providing you could &quot;tune&quot; the walls to resonate out of phase with the woofer it would probably gain, but this would never sound good and it would be impossible to pull off.&nbsp;&nbsp; Port isn&#039;t trying to circulate air out of the box, it is supposed to vibrate the column of air within the port.&nbsp; If port is puffing gusts of air out it is unloading and not adding anything to output but possibly noise.The volume of wood and port counts against you.The problem I see with 2 ports (besides multiple point sources) is that they both are so narrow they likely are not functioning properly.&nbsp; &nbsp; Width vs height ratio is far too high with a design like this.&nbsp; Also I see that the box has the hole from trunk to cabin so constricted that likely not much sound is able to escape from the trunk.First of all learn what gain and crossovers do.&nbsp; The crossover isn&#039;t set to &quot;25%&quot; it&#039;s set to a particular frequency!!!It is also likely that you are sacrificing output for wider bandwidth.&nbsp;&nbsp; It&#039;s quite easy to &quot;upgrade&quot; and get quieter but have more output overall when you consider the larger bandwidth.Good on you for double walling the box.&nbsp; IMO that&#039;s about the only thing you did right on this build, but you really should have asked someone who knows what they&#039;re doing to make some plans for a proper box.</blockquote>

[QUOTE="hispls, post: 8114157, member: 614752"] This is some of the worst information I've seen posted on this site this year. Providing you could "tune" the walls to resonate out of phase with the woofer it would probably gain, but this would never sound good and it would be impossible to pull off. Port isn't trying to circulate air out of the box, it is supposed to vibrate the column of air within the port. If port is puffing gusts of air out it is unloading and not adding anything to output but possibly noise. The volume of wood and port counts against you. The problem I see with 2 ports (besides multiple point sources) is that they both are so narrow they likely are not functioning properly. Width vs height ratio is far too high with a design like this. Also I see that the box has the hole from trunk to cabin so constricted that likely not much sound is able to escape from the trunk. First of all learn what gain and crossovers do. The crossover isn't set to "25%" it's set to a particular frequency!!! It is also likely that you are sacrificing output for wider bandwidth. It's quite easy to "upgrade" and get quieter but have more output overall when you consider the larger bandwidth. Good on you for double walling the box. IMO that's about the only thing you did right on this build, but you really should have asked someone who knows what they're doing to make some plans for a proper box. [/QUOTE]

Verification