Bass Cab/Head Help Please help me !

[dhsierra1]

Originally Posted by tripperthe3

well originally i had 15 inch speakers in them that fit perfectly before they went out on me is this what you mean? Sorry i am very new to measuring all this before i just had an amp and played with settings til i found what i liked.

well, unfortunately you can't just drop in any old bass or sound reinforcement 15" in that cab and expect it to just work, it'd be a crapshoot. The cab is designed around the drivers.

So as DUW mentions, if you'd like to simple replace what you have, go ahead and at least measure the outside of the cab and how far in the front baffle is recessed and either I or someone else can run a quick and dirty on WinISD and get an idea of what drivers might work in there.

Oh yeah, and let us know how many ports, their diameter, and depth, or if it's a slot port those dimensions.

Also your speaker budget would help.

[dhsierra1]

Originally Posted by Downunderwonder

Length width height inside box,
ditto vents

Ha, you beat me this time, did you grease your electrons?

[Downunderwonder]

ditto's type faster. no caps.

[dhsierra1]

Originally Posted by Downunderwonder

ditto's type faster. no caps.

plus it's already tomorrow there so you're already way ahead of me

[tripperthe3]

the Cab is 40x23x16 with 2 vents on the back of the cab and 2 speaker holes.

[basscooker]

Originally Posted by tripperthe3

well originally i had 15 inch speakers in them that fit perfectly before they went out on me is this what you mean? Sorry i am very new to measuring all this before i just had an amp and played with settings til i found what i liked.

what we're looking for is the height, width and depth of the inside of the speaker cabinet. the drivers' performance is dependant on the right dimensions. also mention anything else that effects the air volume or movement... are there any ports? what diameter and length? is it a shelf-type port? what are its dimensions? is there a divider between the speakers? is it solid? if yes, then it should be treated like two cabs. is there alot of bracing? if so, mention that, too due to alot of it changing the volume in there. those are the things that we can use to try and help you.

[dhsierra1]

OK.

Can you give me the vent dimensions as well as how far back the front baffle is set in?

[basscooker]

i guess y'all type far faster than i do....

[dhsierra1]

Originally Posted by basscooker

is there a divider between the speakers? is it solid? if yes, then it should be treated like two cabs. is there alot of bracing? if so, mention that, too due to alot of it changing the volume in there.

+1, thanks for adding those details.

[Steve Dallman]

I have had great luck with bass speakers from MCM Electronics. They usually have great sale prices on 200 watt bass speakers that would outperform the speakers that died on you, usually around $30. Check out their website. You can access their current sales flyers on their website. In my current gigging rig I'm using a pair of fairly compact cabinets with one of their 350 watt 12" speakers and a 6 1/2" Pyle sealed midrange in each, and they produce as much low end as any 15 I've used or have.

[tripperthe3]

So there are 2 speaker ports both have a diameter of 15 inches and a dept of 16 inches.

There are 2 vents behind each speaker that have a diameter of 5 inches

The divider in the middle is solid with a small hole in the middle connecting both of the speakers together with 2 wires.

the dimensions of the whole cab are 40x23x16

[dhsierra1]

a quick and dirty guesstimate is you have 3.0 cu ft per driver so you have a LOT of good options available to you.

The closest thing to a slam dunk would be two Eminence CB158s IMHO, IME. My favorite bang for the buck 15", use them a lot in my builds.

If those are 4" diameter ports then they should be 6" length for starters.

[dhsierra1]

Originally Posted by tripperthe3

So there are 2 speaker ports both have a diameter of 15 inches and a dept of 16 inches.

There are 2 vents behind each speaker that have a diameter of 5 inches

The divider in the middle is solid with a small hole in the middle connecting both of the speakers together with 2 wires.

the dimensions of the whole cab are 40x23x16

the ports are directly behind the drivers? Hmmm, not ideal. They're just cut outs w/o any length beyond the thickness of the plywood?

SD's suggestion of checking MCM isn't a bad idea, I'm not as familiar with their stuff and I know people like them, esp for the price.

[tripperthe3]

Originally Posted by dhsierra1

the ports are directly behind the drivers? Hmmm, not ideal. They're just cut outs w/o any length beyond the thickness of the plywood?

SD's suggestion of checking MCM isn't a bad idea, I'm not as familiar with their stuff and I know people like them, esp for the price.

Yes again , i didn't build it just sorta inherited from a neighbor who was tired of all the music stuff in his basement

and are there any other suggestions for speakers? just so i have a couple to compare myself?

[dhsierra1]

For the price the Eminence Beta 15 and Delta 15 are decent choices, used a lot as replacements for vintage amp since they get that sound.

Do you have a budget in mind?

[Andybart]

Check out Avatarspeakers.com. They sell brand new speaker replacements of any size or ohm for pretty much cost. I just replaced all 4 of my 10" speakers for just over a couple hundred bucks. Just find out what ohm your 15's are and match them up.

[tripperthe3]

maybe under $200.

[Downunderwonder]

Originally Posted by tripperthe3

So there are 2 speaker ports both have a diameter of 15 inches and a dept of 16 inches.

There are 2 vents behind each speaker that have a diameter of 5 inches

The divider in the middle is solid with a small hole in the middle connecting both of the speakers together with 2 wires.

the dimensions of the whole cab are 40x23x16

Is that two port tubes per driver? What is their internal diameter and length? What is thickness of the timbers and setback of front panel ( known as the baffle ). Quite a difference in the internal to external volume with 1/2" here and 3/4" there.

[Downunderwonder]

Those Legends http://www.parts-express.com/pe/show...number=290-497 would go great looking at the design specs for the medium box. 2.75ft^3 per driver and 2x 5.5" long 4" port tubes, easy enough to add those to the front and block the rear holes. It looks like so long as you don't send them stuff below bottom E they take the full 300W each with good senstivity. No wonder thay are popular.

If you do the sums on the actual internal volume less the port tubes, not sure about the back volume of the driver but I think that comes off too, that is your 2.75ft^3 target. These other guys can steer you on.

That's on budget $260 shipped + a few bucks on port tube drain pipe and glue, maybe some stuffing.

[dhsierra1]

Originally Posted by Downunderwonder

Those Legends http://www.parts-express.com/pe/show...number=290-497 would go great looking at the design specs for the medium box. 2.75ft^3 per driver and 2x 5.5" long 4" port tubes, easy enough to add those to the front and block the rear holes. It looks like so long as you don't send them stuff below bottom E they take the full 300W each with good senstivity. No wonder thay are popular.

If you do the sums on the actual internal volume less the port tubes, not sure about the back volume of the driver but I think that comes off too, that is your 2.75ft^3 target. These other guys can steer you on.

That's on budget $260 shipped + a few bucks on port tube drain pipe and glue, maybe some stuffing.

+1. Exactly on all points.

I really like those drivers for the money, very good tone and performance.

And they're very forgiving of cab size and tuning so if your cab isn't spot on 2.75 cu ft net there's no harm no foul since you're close enough.

Your next steps up are neo drivers and those'll exceed your budget.