How do i wire a horn into a high power bass amp?

[punkrokr1701]

I've been getting good on my bass and it's time for me to upgrade from ghetto rigging my home theater as an amp to a REAL amp. Now i was gonna get a Kustom 310C bass combo but they got discontinued just as i almost had them bought. I see no point in spending 100+ easy on some crappy amp that you can't get any power from and the only amp combo that interest me are way over budget. So i"m gonna DIY the bass amp. I have myself a set up sketched already.It'll be a fullstack. Running a 4*12 top half using eminence neo basslite 12's and for reinforcement I'm running a monster 18" Mj-18 ( because of it's attractive price an it won't need to get too low in the sound spectrum and fits the glove perfectly ), these will be pushed by a behringer europower 2500 . I know it's not a real professional set up but I only want a combination of power and tone i don't really care too much about how much rep and the quality as much as my main concerns b/c quality costs out the a** and this is what I can afford to meet thse goals. Anyways, I can bridge the amp to 4 ohms and wire the 4*12 in two sets in parallel wired together in series resulting in 8 ohms which will then be wired in parallel with the sub to get an overall 4 ohms. then only thing is I need some up top sound and therefore i need to add a tweeter/horn but how do i do that with out screwing up the wiring and/or paying a sh**load of cash for x over ?


I probably know how too just most likely forgot

[joe carrow]

Sorry, I thought we went through this already.

It doesn't work like that, impedance is frequency dependent. You can't just parallel four 12" woofers and an 18 woofer and expect anything good to happen. Furthermore, you can't just wire a horn to all of that and somehow avoid paying for a crossover.

You want a big bass amp but can't afford one? Buy used.

You really want to build a PA speaker? Follow an established design and build it as described.

[Tenson]

Get a Bass Pod from Line 6 to give the effects and sound you want.

Now,

Get an 'EMINENCE BETA-12CX 12" COAXIAL DRIVER' and put it in an 80 liter sealed box. Then find a couple of nice sub bass drivers (Delta Pro 15?) and put them in ported boxes. If you drive them from a separate amp you can use an active crossover (Behringer most simple model) to add a first order low-pass at about 80Hz which will merge nicely in to the sealed 12" coaxial for mid-bass and highs.

Plug pod in to the crossover and that in to the amps.

[punkrokr1701]

o yeh! sorry joe i havent been up to anything on building speakers lately i remember now lol yes i know the impedance changes according to box volume, frequency, tuning etc. ok so i guess the question is who's willing to help me design a x over right? and I'll x over the sub too only seperatly from the 4*12

[sreten]

Originally posted by joe carrow
Sorry, I thought we went through this already.

....You can't just parallel four 12" woofers and an 18 woofer and expect anything good to happen......
Furthermore, you can't just wire a horn to all of that and somehow avoid paying for a crossover.....

You want a big bass amp but can't afford one? Buy used.

You really want to build a PA speaker? Follow an established design and build it as described.

hmmm......

You don't know much about speakers for live bass guitar.

An 8 ohm 18" + a series/parallel 8 ohm 4 x12 will be fine in they match.
( I have a 1x15 + 4x10, the drivers do need to suit each other)
And you do simply slap on a tweeter with filter ( + vol if needed).

You do want to be able to run the cabinets seperately.
So appropriate driver choices is the major design issue.

see here :

any electric bass players? im building a bass guitar cab

/sreten.

[joe carrow]

I confess, I've never designed a musical instrument speaker before. Still, my friend who plays bass better than anyone I know expressed a preference for PA-like bass amps, and seemed to enjoy playing through a real PA with fairly flat response and low distortion.

So, sorry I get hung up on *reducing* distortion. It seemed counterintuitive to me that you'd skip the crossover and let the drivers distort into the 100s of percent.

[Tenson]

Originally posted by joe carrow
I confess, I've never designed a musical instrument speaker before. Still, my friend who plays bass better than anyone I know expressed a preference for PA-like bass amps, and seemed to enjoy playing through a real PA with fairly flat response and low distortion.

So, sorry I get hung up on *reducing* distortion. It seemed counterintuitive to me that you'd skip the crossover and let the drivers distort into the 100s of percent.

Thats how I prefer to play bass. I'd rather add the distortion before the amps and speakers so I have total control over it. Hence I say get a bass pod from Line 6.

The chances of getting a musical-happens to sound great-distorted combination of drivers and random crossovers is pretty low… I mean its art! If you are not an expert in this type of thing I’d say its better to build a good PA speaker and use pre-distortion.

[sreten]

Hmmm.....

You obviously put a crossover on the tweeter.

Not crossing over drivers does not cause 100s of percent distortion.

/sreten.

[Inductor]

Originally posted by joe carrow

So, sorry I get hung up on *reducing* distortion. It seemed counterintuitive to me that you'd skip the crossover and let the drivers distort into the 100s of percent.

Hi guys,
Joe, sound and noise seem to be the same for some people.
I wonder how to get better noise... maybe I'm getting older...

[Cameron Glendin]

Not crossing over drivers does not cause 100s of percent distortion.

umm everybody is kinda right. Most compression drivers used for this purpose would only have a power handeling in the 15/ 30 watt range without a x/over. They can be far far more efficient (103-110 db @ 1w ) and a l pad is needed to make them match.

Easy option though is piezo drivers which do not require a x/over and have matched efficiency of a typical large woofer (93db). I have seen multiple units used to boost efficiency.
.


piezo options