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Why are most cabs that are ported tuned absurdly high?

IMHO you should have looked at the Eden stuff before you went off on this venture...or not...:)

Look at the Eden D210XST. It is tuned to 30hz and it has 2
10" speakers. So, it is fast and low.
And IMO can make it sound like mud really quickly in certain situations. I used a 210xst for quite a while, and there were times when I had to fight to tame it. It wasn't the tone, it was this rumbly thing going on. Sometimes those extra lows aren't all they're cracked up to be.

There's a reason why so many manufacturers tune their cabinets in roughly the same frequency range. It's because they simply work better.
 
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THESE CABS ARE INSANE! I'm actually the 'nu-metal' guy mentioned earlier that had the opportunity to test these bad-boyz out. When I say INSANE, I really mean incredible! I have been playing bass guitar on and off for about 12 yrs. I currenlty own a 4 string Fender Jazz bass, an Ibanez 6 string, an Ibanez K5 and a cheap (but rather nice) Dean 5 string accoustic. I've had fender combo amps, an SWR 15 combo, a workingman's 4004 head, and have played through every cabinet known to man. I currently play through an Ampeg SVT 5 pro (that I must say is rather nice; really like the Ampeg sound) accompanied by a 4 x 10 swr and (2) 2 x 10 swr cabs.
Okay...the pleasantries are out of the way.
When testing these cabs out, I used the exact same settings that I had set up for my (3) SWR cabinets and these puppies put out so much more power. Not only was the power there, but the clarity was brilliant. I tested 'em using my K5 tuned down to A. These cabs were so clear that I wanted 1 more string lower than my A tuned B string! It was nuts!
Now I'm not an electrical engineer, so I wouldn't be able to get down to the nitty gritty with anyone discussing specs....however, I've been involved with music my entire life and and have faith in my ear. I've played through quite a few different cabs and these prototypes were the best I've ever heard. They had power and clarity that I've never heard through a bass cab before. Most of the cabs I've heard will either have the deepness or the clarity, generally not both. These had so much of both that I REALLY wanted another string on my bass.
Anywho, I really cann't wait to have mine designed. When it's done, I'll get some pics up and see what I can do about possibly getting some audio up.

Peace
 
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Look at the Eden D210XST. It is tuned to 30hz and it has 2
10" speakers. So, it is fast and low.

What is the response for the Eden D210XST @ 30Hz?

No one knows, since Eden does not publish that specification. And for good reason, because if it has any meaningful response at 30Hz in relation to the 103dB SPL Eden quotes as sensitivity, the likes of EAW, Meyer Audio, and other sound-reinforcement outfits would be out of business and you would see arrays of Eden D210XSTs in arenas. By not quoting a "± dB" in their 30Hz - 14kHz frequency response, that information is close to useless. They could have quoted 20Hz-20kHz, but they must have found some religion.

This is not an opinion on the sound and quality of the cabinet, just the specification. It seems to defy the laws of physics. I tend not to base my purchases on specifications and I think they are of limited use, but half-arsed specifications ruffle me a bit. Specifications? My favorite specification is "Sounds good? = Yes/No". :)

Regarding the original question (mildly rephrased); why are so many bass cabinets shy in the low-end response? Probably because most users don't want that low end response, even if they do not know they do not want it. :) Don't forget, while the Talkbass and other online forum communities are not small, I do not think they are representative of the bass playing population at large. Most of those players have never heard of half the gear the folks on these forums use.
 
What is the response for the Eden D210XST @ 30Hz?
Way, way, way less than the 103db spl, which just makes releasing such a ridiculous spec all the more ridiculous. In all fairness, the cab does sound fairly deep and full, but still in that small, 210 kind of way. It doesn't sound big, deep and full like a larger cabinet that is spec'ed much more realistically. Any 2x12 that I've played from any MFG sounds deeper than a 210xst. It just does. Having been an Eden user previously, I heard many 210xst fans claim that their 210xst was "bigger than any 15 or 18 they've ever played." I always laughed to myself when I heard this. I've yet to hear the 210xst sound deeper than a decent 115, much less a pair of them.
 
How much power can those bad boys handle, and what impedance are they?

Have you guys considered producing them?

By the description and picture they look exactly like what I've always dreamed of. I love the sound of 4 10's, but I feel like you can either go for good high end or good low end and not really both. I;ve been considering a double 210 system for awhile and that looks awesome.

Beautiful stuff.
 
Honestly, I'm not sure what the exact specs are...Ibanez collector has that info. All I know is that the cabs are brilliant.

As far as manufacturing goes, that's up to the guys and how they handle it. It is still in the pro-type stage, but I'm having an 8 x 10 cabinet designed as we speak. It's gonna just be stupid! I currently play in a Hard Rock band that has a lot of distinctive, heavy bass; the cab will be the icing on the cake.
 
i play a 6string in a hip hop band and still have no use for a cab that goes really low.

in the rehearsal space it would create mud (room accoustics), on stage it would interfere with FOH, ratlle everyting and you name it.
 
Did you see thiis? I posted it yesterday. It's from a member on an audio forum, and all I remember is it's a 34" P style bass. Notice the fundamental level on the open E (LHS).
http://www.talkbass.com/forum/attachment.php?attachmentid=56264&d=1176693581


Here's another tool that shows the spectrum over time, which I find easier to read (YMMV):
http://www.talkbass.com/forum/attachment.php?attachmentid=56264&d=1176693581

It can read in wav files, like for audio samples you find that you might like to try and imitate - like off of basstasters.

Using this, I myself in favor a tone with a strong fundamental. I only go to low E. Whether this turns to mush in playing situations depends on the room, but is easy to EQ out. It's nice to have it when the room allows for it.
 
wow, this topic is quite a good read!
very exciting, and enlightening...
that the pics re missing now is no bad thing either, cause this cab is for sure no DIY project...
I think I've just learned a lot -- or at least I hope so :)