immageek Posted April 3, 2016 Report Posted April 3, 2016 I need to build a box for a Dayton RSS265HF-4. Not looking for a giant enclosure, really just a max of 12 or 13 inches wide. Probably going to use a 100 or maybe a 200w amp to drive it. Thinking of a tune in the are area of 28-30hz. The amp will be a plate at and depending on which one I go with could be up to 4.75" deep.
Triticum Agricolam Posted April 4, 2016 Report Posted April 4, 2016 So is this for home audio or your vehicle? "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
immageek Posted April 4, 2016 Author Report Posted April 4, 2016 Home. Sorry. Should have specified. So yeah, it'll have a plate amp that'll need to be mounted in the box. I don't want to make it an external amp.
Triticum Agricolam Posted April 4, 2016 Report Posted April 4, 2016 OK, so you want to keep the box under 13" wide, but how deep and how tall can it be? For home audio use a 2.4 cu ft box tuned to about 23.5 Hz will give you flat response down to almost 21 hz. That's about as good as you could ever hope for. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
immageek Posted April 4, 2016 Author Report Posted April 4, 2016 OK, so you want to keep the box under 13" wide, but how deep and how tall can it be? For home audio use a 2.4 cu ft box tuned to about 23.5 Hz will give you flat response down to almost 21 hz. That's about as good as you could ever hope for. I'm trying to keep it under 2 cu ft. It doesn't have to be tuned ridiculously low, 25-30 is fine. So height and depth are open, I'm aiming for no taller than 16" and maybe 16-18" deep. Hell, even if sealed would work nicely with it, I don't care. It's going to be used for like 33% games, 33% music and 33% tv/movies but not at crazy high volumes.
Triticum Agricolam Posted April 4, 2016 Report Posted April 4, 2016 Ok, if you want to save space and don't need as much low end performance 1.8 cu ft tuned to 25 hz would work well too. Or 1.6 cubes at 27 Hz. You just keep trading off more low frequency output for a smaller box. You are going to need to go larger than 13" W x 16" H x 18" deep though. Those dimensions don't even get you 1.6 cubes of internal space and the sub and port are going to take up quite a bit. If you really need it to fit in a small space that sub will work very well in a sealed box of about 1.1 cu ft. You will give up a LOT of low frequency output though. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
immageek Posted April 4, 2016 Author Report Posted April 4, 2016 Ok, if you want to save space and don't need as much low end performance 1.8 cu ft tuned to 25 hz would work well too. Or 1.6 cubes at 27 Hz. You just keep trading off more low frequency output for a smaller box. You are going to need to go larger than 13" W x 16" H x 18" deep though. Those dimensions don't even get you 1.6 cubes of internal space and the sub and port are going to take up quite a bit. If you really need it to fit in a small space that sub will work very well in a sealed box of about 1.1 cu ft. You will give up a LOT of low frequency output though. Fair enough. One other option, if it was to go into a sealed box is using an amp with some boost around 30-35hz which could help some, right?
Triticum Agricolam Posted April 4, 2016 Report Posted April 4, 2016 Fair enough. One other option, if it was to go into a sealed box is using an amp with some boost around 30-35hz which could help some, right? Well, yes and no. Bass boost, like any other form of EQ, cannot make you system any louder, it just makes some frequencies sound louder relative to others, and it comes at the expense of headroom. For example, with your amp at max output lets say your sub puts out 110 db at 60 Hz and 104 db at 30 hz. So you add in 6 db of bass boost at 30 Hz. Now when you play your sub at a lower volume level it will have even output at both 30 and 60 Hz. However when you play it at max output again it still only puts out 104 db at 30 Hz and now it only puts out 104 db at 60 Hz too. So it cost you 6 db of headroom at 60 Hz, that's the price you pay for EQ. If you never play your system at max volume the loss of headroom doesn't really matter, but if you do blast it at full volume it does matter. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
immageek Posted April 6, 2016 Author Report Posted April 6, 2016 Ok. Fair enough. It's never going to be played at max volume. I'm just trying to make a simple box for use with a small pair of speakers for gaming and maybe some tv/movies. Every time I try to use winisd or bass box pro I always get some kind of crazy long port needed or very high port velocity. I'm trying to learn how this software works to make a box.
Triticum Agricolam Posted April 6, 2016 Report Posted April 6, 2016 If you want any help getting WinISD figured out just let me know. There is definitely a learning curve to it. "Nothing prevents people from knowing the truth more than the belief they already know it.""Making bass is easy, making music is the hard part."Builds:
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