Building a ported 1x15 cabinet

[will33]

I'd suggest that anyone interested do their own recording, analysis, and especially careful post-processing to remove just the fundamental, then decide how much it does or doesn't matter to you. You may notice that even though I posted a lot in that thread, I never really offered any opinions one way or the other.

Thanks Charlie.

Lot of pages to sift through there, maybe I'l get through it in bits and pieces today.

 

[dubhnight]

75 cm seems pretty wide for a head. What are you running?

It's actually a 100w Marshall JMP-100 guitar head, I obviously use it for playing guitar but I find I can get a bass tone I absolutely adore out of it too. I needed a cabinet for it though because I don't like running a guitar cabinet with 150+ watts of distorted bass going through it.

 

[will33]

It's actually a 100w Marshall JMP-100 guitar head, I obviously use it for playing guitar but I find I can get a bass tone I absolutely adore out of it too. I needed a cabinet for it though because I don't like running a guitar cabinet with 150+ watts of distorted bass going through it.

That's a pretty sweet rig, man. I know a guy uses a JMP on a Berg 610. Itsa veddy nice.

 

[will33]

Here are the Eminence designs .

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The medium cab looks like it might be a good choice .

V is volume before adding the speaker , ports and bracing so about 4 cubic feet would be right . Just figure out how wide and tall you want it and then calculate how deep the inside needs to be to get that . It shows two 4" inside diameter ports at about 6.5" long . I've used the Eminence PDF for the CB158 and it came out great , these are very handy .

The Vb came from Eminence, selected for a particular tuning (the freqs given in the post above).

The OP is looking for a box that's fairly wide to fit the amp, so making it still wider than it is tall or deep, I think the dimensions look ok. Any more than 5:4 width/height ratio is gonna look fat and squatty. If you shrink the volume to just a couple of inches of clearance around your speaker for height and depth, you *can* get a high-tuned box, but you don't want your driver butted up against the back of the enclosure. My approach given the desired width would be let's make the box big enough to look good and get the F3 low as a side-effect, is why I suggest the first Eminence suggested box.

We don't even know what head this is going with. hmm...

Lots of choices exist, but it doesn't need to involve guess-n-hope.

Has anyone used the Eminence software?
http://www.eminence.com/support/designing-enclosures/

Did a quick calculation, and going with 75 x 50 x 30 would give ~4.0 ft^3, for F3 ~56 Hz. I'm afraid any shorter or shallower won't fit well. Fortunately there's lot of rooms laterally for the ports.

So, after this back-and-forth, I was just eyeballing Eminences cab design page for the CA154. If I started from scratch, I'd probably end up with something real close to their "Medium Vented" box.

OP may as well just use that, and adjust the dimensions for your desired look, which mulchor as done for you.

It'll sound good, handle a more powerful amp if you get one someday, and pretty much take what a JMP has to throw at it. Impedance curve is tube amp friendly too.

 

[Phendyr_Loon]

Not to threadjack, but I used the enclosure designs on the Eminence site for the rig I'm currently using.
Without getting into specifics it was a medium vented box for a S2012 basslite. I built two identical cabinets, they work quite well for what I need them for.

 

[dubhnight]

That's a pretty sweet rig, man. I know a guy uses a JMP on a Berg 610. Itsa veddy nice.

Thanks, man. It does a good job.
Just to let you guys know, I went with something resembling the medium cabinet. I'll let you guys know when it's done, and I may post some pics too if you're interested.