Quiet Posted August 7, 2011 Report Share Posted August 7, 2011 (edited) Well, the reason they're both great for enclosures is that they DON'T resonate (a lot) in the passband of normal subwoofer output. I like birch because it's light but it's more delicate to work with (splinters) than MDF. MDF on the other hand machines more consistently so sawing and using a router on edges is easier IMO. Also, MDF does not absorb water very easily. I think the other poster was thinking of particle board, which should not be used for sub enclosures, because particleboard DOES absorb water easlily and that it splits when drilled or screwed on the spine. at Lowe Depot, birch is $10-15 more than MDF, but I found lumber yards that specialize in hardwoods seem to carry birch and it's about $35 a sheet. It's worth a glance in the Yellow Pages. Edited August 7, 2011 by srp365 Quote 2007 Pacifica Rebuild. Less quiet. Still not loud. Link to comment Share on other sites More sharing options...
Stee-Z Posted August 7, 2011 Author Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. ive wondered this also, what difference does the resin make ? i am wanting to do this, but their is no point for me to right now, becuase i dont have the basic concept of what it will do lol Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
94retta(219) Posted August 7, 2011 Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. Thats not going to change the dampening of it all that much. Will make it stronger and more ridged yes. But what mdf does it adds mass to the panel itself which is what you want. Quote BUILD LOG Link to comment Share on other sites More sharing options...
jmilch Posted August 7, 2011 Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. ive wondered this also, what difference does the resin make ? i am wanting to do this, but their is no point for me to right now, becuase i dont have the basic concept of what it will do lol People claim the resin makes it stronger. I use resin in my screwless design that only use liquid nails. It adds strength and rigidity supposedly. Its cheap, and some people claim it can gain a .5-1 db gain in SPL designs. Quote Pioneer AVH-P4300DVD | Hertz 6.5 | Alpine Type R 6x9 | Custom 200A Alt | Knu Flek 1/0 Big 3 and all wiring | Eclipse EA3422 | AudioQue 2200d | DC XL 12 | Red Oak Box ~2.8 cubes @ 30 hz | Link to comment Share on other sites More sharing options...
Stee-Z Posted August 7, 2011 Author Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. ive wondered this also, what difference does the resin make ? i am wanting to do this, but their is no point for me to right now, becuase i dont have the basic concept of what it will do lol People claim the resin makes it stronger. I use resin in my screwless design that only use liquid nails. It adds strength and rigidity supposedly. Its cheap, and some people claim it can gain a .5-1 db gain in SPL designs. ok.. now i kinda git it lol, sounds like a challenge for some to take over =P " resined box vs. non resined " Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
jmilch Posted August 7, 2011 Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. ive wondered this also, what difference does the resin make ? i am wanting to do this, but their is no point for me to right now, becuase i dont have the basic concept of what it will do lol People claim the resin makes it stronger. I use resin in my screwless design that only use liquid nails. It adds strength and rigidity supposedly. Its cheap, and some people claim it can gain a .5-1 db gain in SPL designs. ok.. now i kinda git it lol, sounds like a challenge for some to take over =P " resined box vs. non resined " It has been done. Even Steve himself recently said he uses it because it gives the box more strength. Not because it massively increases the DBEEEZ Quote Pioneer AVH-P4300DVD | Hertz 6.5 | Alpine Type R 6x9 | Custom 200A Alt | Knu Flek 1/0 Big 3 and all wiring | Eclipse EA3422 | AudioQue 2200d | DC XL 12 | Red Oak Box ~2.8 cubes @ 30 hz | Link to comment Share on other sites More sharing options...
Supercharged DCs Posted August 7, 2011 Report Share Posted August 7, 2011 Resin alone does not add much strength to an enclosure. Resin+glass mat, however, does Quote Bassless once again. Can't seem to keep a system for more than a few weeks Saving for a '06 Nissan 350z, look for build around June 2012. Link to comment Share on other sites More sharing options...
Stee-Z Posted August 7, 2011 Author Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. ive wondered this also, what difference does the resin make ? i am wanting to do this, but their is no point for me to right now, becuase i dont have the basic concept of what it will do lol People claim the resin makes it stronger. I use resin in my screwless design that only use liquid nails. It adds strength and rigidity supposedly. Its cheap, and some people claim it can gain a .5-1 db gain in SPL designs. ok.. now i kinda git it lol, sounds like a challenge for some to take over =P " resined box vs. non resined " It has been done. Even Steve himself recently said he uses it because it gives the box more strength. Not because it massively increases the DBEEEZ COOL! less work for me lol. only problem is the mess fiberglass makes =( Quote (4)DD 9918's (2)DC 10k 8 6.5" focals 2 DD SS4 mid amps Audison Bit One processor Jl-cl-rlc line driver iPad in dash Dual Irragi 320a alts 8 batcaps 4000's Second Skin sound deadened Link to comment Share on other sites More sharing options...
jmilch Posted August 7, 2011 Report Share Posted August 7, 2011 With sound you actully want the panels to be heavier. Its a way to dampen the box. People are saying ply is stiffer. Well it is but it isnt if that makes sence.. Long storie short, birtch resonates more then mdf does. Mdf is better imo Fiberglass and resin the inside then. ive wondered this also, what difference does the resin make ? i am wanting to do this, but their is no point for me to right now, becuase i dont have the basic concept of what it will do lol People claim the resin makes it stronger. I use resin in my screwless design that only use liquid nails. It adds strength and rigidity supposedly. Its cheap, and some people claim it can gain a .5-1 db gain in SPL designs. ok.. now i kinda git it lol, sounds like a challenge for some to take over =P " resined box vs. non resined " It has been done. Even Steve himself recently said he uses it because it gives the box more strength. Not because it massively increases the DBEEEZ COOL! less work for me lol. only problem is the mess fiberglass makes =( You are only going to use the resin. If you wear gloves and take your time, and mix things right its not bad at all. Quote Pioneer AVH-P4300DVD | Hertz 6.5 | Alpine Type R 6x9 | Custom 200A Alt | Knu Flek 1/0 Big 3 and all wiring | Eclipse EA3422 | AudioQue 2200d | DC XL 12 | Red Oak Box ~2.8 cubes @ 30 hz | Link to comment Share on other sites More sharing options...
Dylank811 Posted August 7, 2011 Report Share Posted August 7, 2011 Never thought about saving weight with a less dense wood. If at some point I do a rebuild, I think I will try Birch or Oak to try to save some gas/acceleration. Quote 2004 Ford Mustang GTPioneer DEH-P7200HD head unitMach 460 Factory System Cadence FXA1600.2 Cadence S2W10 Cadence 4 AWG wiring Ported box, 2 cubes, 32 hertz Link to comment Share on other sites More sharing options...
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