Bass rigs should be a catatagory

spode master · Not So Newbie Joined: 19 Jan 2007 Posts: 8

Finaly Decided to join a Bass Player Forum.

I want to talk a little bit about Rig Design. And the rig I am currently running.

I decided to design my own Bi-amped Bass rig since it became imediately obvious that there is really no comercially available, reasonably portable bass cab or subwoofer on the market that is capable of HIGH SPL output bellow 40 or 50Hz (Well not Many). And there certainly are no "full range" bass cabs capable of any High SPL sub bass.

here are some of the links that I have already posted regarding the system I've designed.

http://alembic.com/club/messages/411/18707.html?1129919568

http://srforums.prosoundweb.com/index.php/m/80905/9654/0///8490/#msg_80905

http://srforums.prosoundweb.com/index.php/m/82403/8490/?SQ=ab1ac9f6e1e07f049ef86293c162ec0c

My rig as it stands now.

Amps:
Ampeg SVT 3 Pro (Everything above 80Hz)
Either 1 Alesis Matica 900 or a pair of Carvin DCM1500's (Everything Bellow 80Hz)

Carvin XC3000 2/3 way Xover

Speakers:

A pair of EVM 15L's in some TL606 cabs.

A pair of my custom BS-212 subwoofers.

My design goal was a bass rig that could compete with a Marshal stacks SPL down to and Bellow 30Hz. And keep it reasonalbly portable for something capable of of High SPL (124dB @ 30Hz).

I ended up with quite an impressive extreamly clean smooth sounding subwoofer. I'm not so sure I'm the biggest fan of the sound quality of the EVM15L's that I'm using as the top boxs. Their a little too flat responding from 80Hz-3kHz. Then they drop off a rock above 3kHz.

Anyhow I think I need something with a little more character for my Top box.

I was just wondering if anyone else here has taken a similar approach to bass rig design. I'm hoping to figure out how to get a little more character and growl out of my rig but preserve the Uber fundamental response.

I have the background of an electronic tech and am also working on a single integrator circuit sumed with a highpass filter to counteract my pickup placements 6dB per octave Bass roll off. If anyone in the forum understands what I'm talking about, and have any thoughts about such a circuit by all means let me know.

There just has to be someone else out there that is as obsesed with the uber 5 string bass rig!!!!

Nice to chat with ya'll

S'master

spode master · Not So Newbie Joined: 19 Jan 2007 Posts: 8

Did I scare Ya'll????

S'master

Chrishas · Ferret Joined: 03 Sep 2004 Posts: 113 Location: Cyprus

Wellll,not really,a liitle maybe.:p

I don't understand most of the technical things you wrote, but what's the frequency range you get?

spode master · Not So Newbie Joined: 19 Jan 2007 Posts: 8

Not that I need that much extension but 20Hz-3kHz currently.

I drop tune my Alembic a whole step. Low string is Low A 27.5Hz

I can get ~118dB @ 20Hz and 124dB @ 30Hz.

The Extra Low bass makes it feel like you've lost you land legs, and a little quezzy. Great fun!!! Twisted Evil

Its all about knocking plaster off the walls.

The only other great and superior subwoofer I know of on the market Is the Danley Sound Labs DTS-20.

www.danleysoundlabs.com

S'master

Chrishas · Ferret Joined: 03 Sep 2004 Posts: 113 Location: Cyprus

Wooooow, that's way low, how about those speakers you made yourself?How much did they cost you?

spode master · Not So Newbie Joined: 19 Jan 2007 Posts: 8

The Lab12 driver costs about 140-150$ through Parts Express.

The Wood was a couple hundred Though I bought right after hurricane Katrina, and 4X8 instead of 5X5. I leared Later 5X5 Birch ply is much cheaper.

The ADA handles where around 16$each

The casters where around 3$ each

I bought some Duratex black acrylic paint 50$ Gallon.

So roughly 1000$ for the pair not including the amount of time it took me to build (My first major woodworking so the learning curve ate some time).

There was also time spent researching, and Designing the Cab in Auto Cad.

I have the cad drawings available. To anyone that wants to give it a go.

Great for Small PA and Home theater/Home Studio subs too.

You could build one but the original design was 1 cab using 4 speakers. I felt it significantly more convienient to move to split into two seperate cabs.

S'master

Mkuk0 · Posted: Tue Jan 23, 2007 8:27 am Post subject:

Thanks for all the info dude, kinda scary yes, but also kinda quiet round here for a while. Dunno why.
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spode master · Not So Newbie Joined: 19 Jan 2007 Posts: 8

Very quiet!!!

S'master