Termpro Audio Forum Post New Topic  Post A Reply
my profile | directory login | register | faq | forum home

  next oldest topic   next newest topic
» Termpro Audio Forum » Installer's Corner » Installation Tips, Tricks, & Techniques » What box material to use?

 - UBBFriend: Email this page to someone!    
Author Topic: What box material to use?
xpl
Senior Member
Member # 17421

Icon 5 posted      Profile for xpl   Email xpl   Send New Private Message       Edit/Delete Post   Reply With Quote 
I am building a frame for my box out of 1" square steel tubing and I was going to wrap it with 1" MDF, however a friend of mine told me I should switch to Birch Plywood, that it is lighter weight and stronger than MDF.

Is that the case? Is it better? I made the switch from Plywood to Particle Board to MDF over the years, now is Birch Plywood really what I should be using, or what?

Give me some direction - this is for a daily driver that will pound pretty well - 4 12" with about 3-4k of power on 12v.

Give me some feedback please (and thank you).

Posts: 1320 | From: Lawrence, KS | Registered: Jun 2005  |  IP: Logged | Report this post to a Moderator
deaf tones
Senior Member
Member # 3439

Icon 1 posted      Profile for deaf tones   Email deaf tones   Send New Private Message       Edit/Delete Post   Reply With Quote 
yes, birch plywood FTW. it's lighter, stronger & smells a lot better [Smile] ...you make up for that in price though

--------------------
[Big Grin]

 -

quote:
it would all be for nothing without my favorite cawk-smoker NAvi


Posts: 10376 | From: bay area,ca | Registered: Dec 2000  |  IP: Logged | Report this post to a Moderator
Mr. C
Senior Member
Member # 18310

Icon 1 posted      Profile for Mr. C   Email Mr. C   Send New Private Message       Edit/Delete Post   Reply With Quote 
$$$$$$$$$$$$$$$

Baller move going with the birch.

--------------------
SQ car: Kenwood DNX7100/6.5" Quart comps/
US Amps TU-4360/Stinger expert wires

SQL car: Alpine 7995/AudioControl DQX /MB Quart 6.5 comps
2 US Amps USA 2000's & 4300x/ 2 DD 9915's [Smile] [Smile]

HT: 55" Mitsubishi HDTV/ Monster Cable AVS 2000 & HTS 5100/
modded Sony ES receiver/ Def Tech speakers/ XBox 360/ PS3

Posts: 589 | From: Maryland | Registered: Jan 2006  |  IP: Logged | Report this post to a Moderator
AudioAnonymous
Senior Member
Member # 15369

Icon 1 posted      Profile for AudioAnonymous   Email AudioAnonymous   Send New Private Message       Edit/Delete Post   Reply With Quote 
If you get the Baltic birch don;t get the cheap Home Depot stuff.

Make sure it's cross layered and void free (more expensive and stiffer)

--------------------
Team Cactus Sounds
Team XS Power

Posts: 2394 | From: WI | Registered: Jun 2004  |  IP: Logged | Report this post to a Moderator
IMPALAMAN1
Senior Member
Member # 3314

Icon 1 posted      Profile for IMPALAMAN1   Email IMPALAMAN1   Send New Private Message       Edit/Delete Post   Reply With Quote 
makes less sawdust too!

--------------------
1968 IMPALA......

CLARION DRX9375R
2 OZ TWEETERS
4 OZ 5 1/4 IN THE KICKS
2 OZ 8" (200L)IN THE DOORS
2 OZ 12" (300L)ported [Smile]
1 linear power 8002
1 linear power 3.2
2 linear power 2.2
linear pa2 "bb"
linear power xo2
linear power x03

Posts: 603 | From: BAY AREA CALIFORNIA | Registered: Nov 2000  |  IP: Logged | Report this post to a Moderator
xpl
Senior Member
Member # 17421

Icon 1 posted      Profile for xpl   Email xpl   Send New Private Message       Edit/Delete Post   Reply With Quote 
well so far - Im not hearing any negatives to this. When we say $$$$ - what are we saying? I mean - I just dropped (fairly recently) $45 bucks a sheet for 1" MDF.

Is it more than that? If so - ballpark it for me. If not - ballpark it for me anyway please.

[Smile]

Posts: 1320 | From: Lawrence, KS | Registered: Jun 2005  |  IP: Logged | Report this post to a Moderator
AudioAnonymous
Senior Member
Member # 15369

Icon 1 posted      Profile for AudioAnonymous   Email AudioAnonymous   Send New Private Message       Edit/Delete Post   Reply With Quote 
Well. Up here in Green Bay, Wisconsin Home Depot charges around 22 bucks for 3/4" 4x8 sheet of MDF. Menards (up here)is where the void free better Birch was at 59.99 for 13 layer(3/4") for a 4x8 sheet.

--------------------
Team Cactus Sounds
Team XS Power

Posts: 2394 | From: WI | Registered: Jun 2004  |  IP: Logged | Report this post to a Moderator
Mr. C
Senior Member
Member # 18310

Icon 1 posted      Profile for Mr. C   Email Mr. C   Send New Private Message       Edit/Delete Post   Reply With Quote 
quote:
Originally posted by xpl:
well so far - Im not hearing any negatives to this. When we say $$$$ - what are we saying? I mean - I just dropped (fairly recently) $45 bucks a sheet for 1" MDF.

Is it more than that? If so - ballpark it for me. If not - ballpark it for me anyway please.

[Smile]

Prices:

3/4" plywood 4x8 sheet: $18
3/4" MDF 4x8 sheet: $23 and change
3/4" premium birch 4x8 sheet: $60

Hate to see the price of a 4x8 sheet of 1" or 1.5" good quality birch.

--------------------
SQ car: Kenwood DNX7100/6.5" Quart comps/
US Amps TU-4360/Stinger expert wires

SQL car: Alpine 7995/AudioControl DQX /MB Quart 6.5 comps
2 US Amps USA 2000's & 4300x/ 2 DD 9915's [Smile] [Smile]

HT: 55" Mitsubishi HDTV/ Monster Cable AVS 2000 & HTS 5100/
modded Sony ES receiver/ Def Tech speakers/ XBox 360/ PS3

Posts: 589 | From: Maryland | Registered: Jan 2006  |  IP: Logged | Report this post to a Moderator
xpl
Senior Member
Member # 17421

Icon 1 posted      Profile for xpl   Email xpl   Send New Private Message       Edit/Delete Post   Reply With Quote 
Im wrapping this around a steel frame, so I think 3/4" should be just fine - for now anyway.

Thanks all.

Posts: 1320 | From: Lawrence, KS | Registered: Jun 2005  |  IP: Logged | Report this post to a Moderator
Kartunes WI
Member
Member # 18972

Icon 1 posted      Profile for Kartunes WI   Author's Homepage   Email Kartunes WI   Send New Private Message       Edit/Delete Post   Reply With Quote 
We use apple ply from time to time and it is solid as hell and light. It is expensive though... around $100-$120 a sheet for one inch. Great looking wood though, clean cuts, hardly any saw dust. Just my 2 cents.

--------------------
Mike Schwitz
Stay Tuned Audio
262-542-8863
Team Ultra Subs
Team SRS
Also an "Insider"
262-707-7570 (cell)

Posts: 129 | From: Milwaukee, WI | Registered: Jul 2006  |  IP: Logged | Report this post to a Moderator
RFLfestiva
Member
Member # 14229

Icon 1 posted      Profile for RFLfestiva   Email RFLfestiva   Send New Private Message       Edit/Delete Post   Reply With Quote 
Just go with free-air subs, then you don't have to worry about the box.......Ha ha J/K
I used MDF inside the cab, but on the doors I used birch plywood, it kept the doors light but strong. Have you figured out how much steel tubing you need? That way we can figure out how heavy the box will end up weighing for both MDF/plywood. maybe that will help you figure out which one to go with.

--------------------
extreme 2
2 MTX RFL
1 MEMPHIS 4KW
So far 165.7 db....

Posts: 128 | From: Lawrence, KS | Registered: Dec 2003  |  IP: Logged | Report this post to a Moderator
Pulse Car Audio
New Member
Member # 32806

Icon 1 posted      Profile for Pulse Car Audio   Author's Homepage   Email Pulse Car Audio   Send New Private Message       Edit/Delete Post   Reply With Quote 
we built two identical boxes. one out of 3/4" MDF. the other out of 3/4" birch ply.

the spl was 1.4dB higher with the birch box.

i think the acoustics of the wood itself also help to be honest, kinda like guitars are made with mahogany (some of the best and most demanded) for the resonances of the wood itself.

just my two cents.

im going to resin the inside of the box tomorrow. that will tell me if its the acoustical characteristics or the strength itself. [Smile]

--------------------
pulse car audio

"GIVE YOUR CAR SOME LIFE!"

authorized dealer for:
Digital Designs, Powerbass eXtreme,JBL, Batcap,Excessive Amperage

Posts: 100 | From: Salisbury, MD | Registered: Apr 2009  |  IP: Logged | Report this post to a Moderator
Nemanja
New Member
Member # 21704

Icon 1 posted      Profile for Nemanja   Email Nemanja   Send New Private Message       Edit/Delete Post   Reply With Quote 
so we await the results!

--------------------
Hamsters

Posts: 90 | From: Serbia | Registered: Nov 2007  |  IP: Logged | Report this post to a Moderator
TeamSubGoPoof
Senior Member
Member # 11162

Icon 1 posted      Profile for TeamSubGoPoof   Author's Homepage     Send New Private Message       Edit/Delete Post   Reply With Quote 
quote:
Originally posted by Pulse Car Audio:
we built two identical boxes. one out of 3/4" MDF. the other out of 3/4" birch ply.

the spl was 1.4dB higher with the birch box.

i think the acoustics of the wood itself also help to be honest, kinda like guitars are made with mahogany (some of the best and most demanded) for the resonances of the wood itself.

just my two cents.

im going to resin the inside of the box tomorrow. that will tell me if its the acoustical characteristics or the strength itself. [Smile]

We've done the same test and didn't see a difference in SPL at all [Confused]


How big were the enclosures? Maybe the strength of the birch had less flex then the mdf in your enclosures?

--------------------
 -


 -

Posts: 8168 | From: Russellville AL | Registered: Nov 2002  |  IP: Logged | Report this post to a Moderator
Kicker700
Member
Member # 7170

Icon 1 posted      Profile for Kicker700   Email Kicker700   Send New Private Message       Edit/Delete Post   Reply With Quote 
HDPE.

--------------------
Never Stop Dreaming...

Posts: 480 | From: Southern Cali | Registered: Oct 2001  |  IP: Logged | Report this post to a Moderator
Pulse Car Audio
New Member
Member # 32806

Icon 1 posted      Profile for Pulse Car Audio   Author's Homepage   Email Pulse Car Audio   Send New Private Message       Edit/Delete Post   Reply With Quote 
ok check this out... resin didnt help. infact i lost .3dB! i think its the acoustical resonances of the wood itself.

by the way... subgopoof... the boxes were IDENTICAL. same bracing, same waveguides, etc.

rebuilt another box and got the .3 back. go figure.

also, just rebuilt another box...same thing, exact box, just in birch...
that car jumped .9dB

of course this cannot be GUARANTEED... just worked in three cases for us so far.

--------------------
pulse car audio

"GIVE YOUR CAR SOME LIFE!"

authorized dealer for:
Digital Designs, Powerbass eXtreme,JBL, Batcap,Excessive Amperage

Posts: 100 | From: Salisbury, MD | Registered: Apr 2009  |  IP: Logged | Report this post to a Moderator
Sinister-David
Senior Member
Member # 20749

Icon 1 posted      Profile for Sinister-David   Author's Homepage   Email Sinister-David   Send New Private Message       Edit/Delete Post   Reply With Quote 
i gained going from MDF to birch

--------------------
 -


Team Sinister Autosports
Team Xs Power
Team Soundigital
 -

http://www.myspace.com/boomvada

Posts: 754 | From: Indianapolis | Registered: Jul 2007  |  IP: Logged | Report this post to a Moderator
   

Quick Reply
Message:

HTML is not enabled.
UBB Code™ is enabled.

Instant Graemlins
   


Post New Topic  Post A Reply Close Topic   Feature Topic   Move Topic   Delete Topic next oldest topic   next newest topic
 - Printer-friendly view of this topic
Hop To:


(c) 1996-2007 WHE Inc, Carson City Nevada, USA

Powered by Infopop Corporation
UBB.classic™ 6.7.2