Reply to thread

Message

<blockquote data-quote="mikegett" data-source="post: 1590848" data-attributes="member: 561005">You can&#039;t add two 12db slopes and get a 24 db slope.&nbsp; &nbsp;&nbsp; A 24 db slope allows more frequencies to pass through the crossover than a 12 db slope.&nbsp; &nbsp; If you pass the frequencies through a 12 db crossover it will loose the frequencies that a 24 db slope would have allowed.&nbsp; &nbsp;&nbsp; The same holds true for two 24 db&nbsp; slopes.&nbsp; &nbsp; Passing frequencies through two 24&#039;s will not eliminate the same frequencies that a 12 db would.Your HU crossovers are called active.&nbsp; &nbsp; Meaning that the frequency is altered prior to the source (in this case your amp).&nbsp;&nbsp; Your amp crossover is passive and altered after the source (your amp).&nbsp; &nbsp; &nbsp; A active crossover uses software to adjust the settings while a passive uses components like resistors and caps.&nbsp; &nbsp; &nbsp; Some people prefer the sound of active while others prefer passive.&nbsp; &nbsp;&nbsp; I would suggest using both seperately and see what you like more.&nbsp; &nbsp; &nbsp; I doubt you will notice much of a difference on&nbsp; your subs.&nbsp; &nbsp;&nbsp; It becomes more noticable between mids and highs.Every sub will very on how it should be crossed over.&nbsp; &nbsp;&nbsp; Even the sub enclosure will affect how well it will reproduce frequencies.&nbsp; &nbsp; &nbsp;&nbsp; The sealed enclosure will allow the sub to reproduce wider ranges without distortion.&nbsp; &nbsp; &nbsp; The only real way to know is by setting your crossover high and play test sounds.&nbsp; &nbsp; &nbsp; You did say that bandpassing sounded better.&nbsp; &nbsp;&nbsp; Most likely this was due to the sub playing frequencies that were too low for it.&nbsp; &nbsp; &nbsp; Set the sub high pass slightly above the manufacturers rated low end.&nbsp; &nbsp; &nbsp; I would suggest using a 12 db slope on all subs.&nbsp; &nbsp; The 24 will allow too many frequencies.&nbsp; &nbsp; &nbsp; Place your low pass close to 200 htz.&nbsp; &nbsp;&nbsp; Most mid bass like quitars are in this range.&nbsp; &nbsp;&nbsp; Play a good rock cd paying special note to the mid bass.&nbsp; &nbsp; &nbsp; A sub has a very difficult time producing mid bass and bass affectively.&nbsp; &nbsp; &nbsp; If the guitar strings sound muddy opposed to short and snappy, lower the low pass setting.&nbsp; &nbsp; &nbsp;&nbsp; You won&#039;t be able to improve how the sub reproduces the mid bass, but you will be able to tone down its volume.&nbsp; &nbsp; Allowing your fronts to control the mid bass.If you are new to crossovers, I suggest you search for charts on frequency ranges.&nbsp; &nbsp;&nbsp; It will help you to know what sounds are played in what ranges.</blockquote>

[QUOTE="mikegett, post: 1590848, member: 561005"] You can't add two 12db slopes and get a 24 db slope. A 24 db slope allows more frequencies to pass through the crossover than a 12 db slope. If you pass the frequencies through a 12 db crossover it will loose the frequencies that a 24 db slope would have allowed. The same holds true for two 24 db slopes. Passing frequencies through two 24's will not eliminate the same frequencies that a 12 db would. Your HU crossovers are called active. Meaning that the frequency is altered prior to the source (in this case your amp). Your amp crossover is passive and altered after the source (your amp). A active crossover uses software to adjust the settings while a passive uses components like resistors and caps. Some people prefer the sound of active while others prefer passive. I would suggest using both seperately and see what you like more. I doubt you will notice much of a difference on your subs. It becomes more noticable between mids and highs. Every sub will very on how it should be crossed over. Even the sub enclosure will affect how well it will reproduce frequencies. The sealed enclosure will allow the sub to reproduce wider ranges without distortion. The only real way to know is by setting your crossover high and play test sounds. You did say that bandpassing sounded better. Most likely this was due to the sub playing frequencies that were too low for it. Set the sub high pass slightly above the manufacturers rated low end. I would suggest using a 12 db slope on all subs. The 24 will allow too many frequencies. Place your low pass close to 200 htz. Most mid bass like quitars are in this range. Play a good rock cd paying special note to the mid bass. A sub has a very difficult time producing mid bass and bass affectively. If the guitar strings sound muddy opposed to short and snappy, lower the low pass setting. You won't be able to improve how the sub reproduces the mid bass, but you will be able to tone down its volume. Allowing your fronts to control the mid bass. If you are new to crossovers, I suggest you search for charts on frequency ranges. It will help you to know what sounds are played in what ranges. [/QUOTE]

Verification