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Back to Speakers... Again! (Dirt Cheap Open Baffle Speaker Project)
Deep Funk:
Looks good. Is the size of these speakers an indication of their range?
The speakers look large enough to fill a decent sized living room for music and movies.
donunus:
Ive heard Vintage open Baffle Altecs and they were pretty nice already
OJneg:
Damn damn damn! Purrin beats me to it again! If I hadn't been swamped with classes this quarter I would have had my own OB built by now. At this point I'm looking at first order filters + software PEQ to touch things up, similar to what you have I imagine. Still going to use that Alpha 15A driver myself.
Give me a few more weeks and it'll be ready. I promise it'll be even dirtier and cheaper than yours :)p1
Marvey:
--- Quote from: Kirosia on February 09, 2014, 08:10:36 PM ---
--- Quote from: purrin on February 09, 2014, 07:40:46 PM ---
--- End quote ---
Couldn't help it.
--- End quote ---
Dang, don't give me any ideas. I could might draw something like that on the boards.
Marvey:
--- Quote from: Deep Funk on February 09, 2014, 09:20:50 PM ---Looks good. Is the size of these speakers an indication of their range?
The speakers look large enough to fill a decent sized living room for music and movies.
--- End quote ---
Pretty much. The problem with OB speakers is bass roll off depending upon the drivers used. The wide baffles help to extend that. The 15" Betas have a Fs of 35Hz and fairly high Qts. I think I'm getting extension down to 40Hz. Everything, x-overs, EQ, etc. so far has been done by ear, so I'm not totally sure about that. I'm hoping not to have to resort to a sub. I do know that I have quite a lot of headroom to probably squeeze another 5-10Hz of bass extension using EQ.
Regardless of OB design or not, I'm a huge advocate of BIG drivers for bass, even mid or high bass. There's nothing like 15" or 18" woofers producing bass. Just an effortless, very refined, and fast explosive quality to it. And likewise 8" drivers producing mids. It's nice not seeing the drivers move or just barely move. Lower distortion. Probably also has something to do with keeping the magnetic field on the voice coil in the most linear range of its motion. Or maybe it's something like that old adage for car engines: there's no replacement for displacement. This is why most $50,000 "audiophile" speakers at events like THE SHOW suck. Many of these designs have been compromised by the WAF - thin skinny "attractive" things.
Just do the math. How many 8 inch "woofers" does it take to equal the cone area of one 15 inch woofer used here.
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