Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

No rock on open baffles?
No rock on open baffles?
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 10th January 2007, 10:50 PM   #1
davidallancole is offline davidallancole  Canada
diyAudio Member
Join Date: Nov 2005
Default No rock on open baffles?

Hello Everyone,

I have recently become interested in the open baffle concept. I like the simplicity of it all and most if not all comments have been good. Many times over I have heard people say they have tried open baffle and will never go back to boxes.

Another comment I hear often has to do with open baffles not being good for rock music. One perticular fellow said he listens to the Cult and Audioslave and said they do not sound good on open baffle. Most of these people I have read from seem to listen to entirly different music then I do. I don't even recognize much of the bands or singers they mention.

I listen to a lot of metal and punk, anything with fast guitars:
Avenged Sevenfold, Metallica, DragonForce, Voodoo Glow Skulls, NOFX, The Vandals.

I don't listen at earsplitting levels either. I figured out the power on my 89dB speakers where I normally listen to them at was peaking at 1 watt, and that was with Metallica. Most of the other music like the punk was a little lower, like a 1/3 lower or more.

So my question is why are open baffles bad for rock music? Does it just sound more muffled? Is there a lack of bass for rock? Is the open baffle too dynamic and fast for rock music that it just makes it sound bad?

Well, anyways, I am going to play around with the open baffle concept when I get a house in the next few months anyways. My cheap play speakers are the Radio Shack 40-1271 and the 40-1024. Here is some links to some specs on them:
  Reply With Quote
Old 11th January 2007, 12:06 AM   #2
Zen Mod is offline Zen Mod  Serbia
Official Court Jester
diyAudio Member
Zen Mod's Avatar
Join Date: Jan 2003
Location: ancient Batsch , behind Iron Curtain
No rock on open baffles?
cheap speaker is always cheap,doesn't matter if you used them in this or other way;

there are ways when cheap speakers sounds lots better than price can say,and OB concept is usual suspect for this;

other thing- good spk construction is good and pretty linear,so it is capable to recreate all sorts of music;

imagine OB as ,say, MK's : two 15" + Lowther (with or without tweet) ....all that per side;
do you think that combo can't move some air?

conclusion: do not fall easy under generalizations of any kind......just build and learn
my Papa is smarter than your Nelson !
clean thread; Cook Book;PSM LS Cook Book;Baby DiyA ;Mighty ZM's Bloggg;Papatreasure;Papa...Đ by Mighty ZM
  Reply With Quote
Old 11th January 2007, 12:15 AM   #3
ronc is offline ronc  United States
diyAudio Member
Join Date: Mar 2003
Martins approach to the question appears to me to be the best solution to the OB/LF response.
I would go fer OBs, but room dimensions appear to not be the best, so i will stick with what i know, BL horns.
  Reply With Quote
Old 11th January 2007, 01:58 AM   #4
davidallancole is offline davidallancole  Canada
diyAudio Member
Join Date: Nov 2005
Thanks for the replys. I would imagine those 2 15"ers could move lots of air.

I was thinking of bi-amping with the two sets of 8" subs I have. One of those thin baffles with the wings with the fullrange on one amp and the 2 8"ers in parallel with another amp all in a line.
  Reply With Quote
Old 11th January 2007, 03:54 AM   #5
gmilitano is offline gmilitano  Canada
diyAudio Member
gmilitano's Avatar
Join Date: Apr 2004
Location: Winnipeg, Manitoba
I played around with the 40-1271 in an OB and it worked ok. Large full range units tend to shout, so listen to them off axis.

The 40-1271 has an ultra high Q, but they could also work in an aperiodic enclosure. Perhaps something along these lines:

Another idea is a dipole:
Perhaps the 40-1271 facing forward and the 40-1022 on the back.

You should be able to have some good cheap fun with these.
  Reply With Quote
Old 11th January 2007, 04:11 AM   #6
arnoldc is offline arnoldc  Philippines
diyAudio Member
Join Date: Apr 2003
Location: Makati
Send a message via Yahoo to arnoldc
I have used Open Baffles in my system. I once used a vintage 8" Altec 2459A and they were surprising in sonics. 60% of my LPs are Rock, and yes my friend's OB with Altec 755 + EVT horns does rock. So I think the choice of drivers will determine if your OB can rock.
  Reply With Quote
Old 11th January 2007, 06:24 AM   #7
preiter is offline preiter  United States
diyAudio Member
preiter's Avatar
Join Date: May 2006
Open baffles are good for any kind of music.

You may need a large baffle, large drivers and/or equalization to get adequate bass. Or you could pair them with a sealed subwoofer.
  Reply With Quote
Old 11th January 2007, 09:06 AM   #8
Rudolf is offline Rudolf  Germany
diyAudio Member
Rudolf's Avatar
Join Date: Mar 2003
Location: Germany
The lack of bass attributed to OBs has two sources:

1. The objective lack of room gain, because dipoles donīt "pressurize" the room below the lowest room mode. You certainly can compensate for that by adding bass driver surface.

2. The objective absence of some boomy room resonances, which leads some listeners - who do not know otherwise - to the false assumption of lacking bass. In fact dipoles will deliver bass more true to the original than conventional boxes. But without the "help" of those boomy resonances you may have difficulty to get the amount of "one note punch" some rock afficionados mistake for bass quality.
  Reply With Quote
Old 11th January 2007, 09:32 AM   #9
rick57 is offline rick57
diyAudio Member
Join Date: Dec 2002
Location: dry ol Melbourne Australia

For rock IMO you want bass down to at least about 40-50 Hz.
The limit to bass extension & volume in an OB comes down to volume displaced (driver area * Xmax) and/ or baffle size.

There are two broad options

The small baffle route:
Linkwitz's OBs: use 8" drivers with IIRC 6.5 mm Xmax: as *mids either one in the newer Orion, down to 120 Hz; or two 8" in his Phoenix, down to IIRC 100 Hz. The smallish baffles require EQ.
Note the 400-1024s have Xmax of only 2.35 mm

The Orion for lower bass (ie < 120 Hz) uses a pair of 12.5 mm Xmax 10" drivers, the Phoenix uses a pair of 12.5 mm Xmax 12" drivers. Both again use EQ, and are flat or close to it, down I believe to about 30-40 Hz.

A good example of the other OB bass option:
large baffles and/ or more driver volume displaced, no EQ, flat to the bottom of the rock register:

  Reply With Quote
Old 11th January 2007, 12:32 PM   #10
opnly bafld is offline opnly bafld  United States
diyAudio Member
opnly bafld's Avatar
Join Date: Nov 2006
Location: Illinois
If you use a high Q driver ( I had two 15" Hawthorne Augies) and a separate amp to drive them the baffle doesn't have to be large IMO. On a 45"h x 20"w flat baffle bass was good down to 40hz. It rocked very well (see Rudolf's comments above).

  Reply With Quote


No rock on open baffles?Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Which drivers for my next open baffles? SimontY Multi-Way 163 20th January 2009 02:20 PM
New open baffles hurdy_gurdyman Multi-Way 3 26th September 2007 02:22 PM
$7 open baffles... planet10 Full Range 31 8th May 2005 07:45 AM
Open Baffles :- ) brianon Multi-Way 17 3rd February 2004 08:13 PM
Open baffles? dc Multi-Way 5 28th December 2001 02:10 AM

New To Site? Need Help?

All times are GMT. The time now is 12:40 PM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio