Just for a fun DIY project I am going to build a 4 x 8" cabinet to use with guitar, and maybe even bass. I have four cheap 8" drivers laying around. My goal is to get the four speakers into a relatively small space, and get as much in the 40-80hz zone out of them as I can. I guess I should have two of them facing out for better hi-mids, since it's not strictly a sub.
Could someone recommend which isobaric arrangement of the drivers might be a good way to go, for a simple design? Input appreciated.
Could someone recommend which isobaric arrangement of the drivers might be a good way to go, for a simple design? Input appreciated.
Isobarik is not good for FR, as one starts to get FR ripple at a distance related to the front driver & the back driver.
What is the 8” driver?
dave
What is the 8” driver?
dave
These are cheap and crappy 8" car speakers - it's just literally to use them for something and experiment, so "good" is not really the expectation, but rather interesting.
You can moderate the problems p10 described by mounting the driver pairs face to face on each side of the baffle.
Something to try so long as you're experimenting.
Something to try so long as you're experimenting.
With cheap speakers iso loading mostly leads to fireworks, which can be fun...you could consider a bandpass with all four firing into a central chamber with a big port?
That looks like a good option, from a space-saving perspective.
It's a pandemic project for amusement, so that's totally fine. 😀 Since I'm going to use it for guitar, an 80hz-5khz range at moderate volume is fine. Literally just want to get rid of these speakers. Central chamber sounds interesting, could be a pretty small enclosure.
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That would be an additional benefit.
Another would be that some nonlinearities in the drivers would tend to cancel.
Another would be that some nonlinearities in the drivers would tend to cancel.
Small yeah, a rectangle divided 25/50/25 or 1/3s, you would have to calculate this as a band pass would probably not be good for your upper feq range
For a guitar range maybe thing about a tapped horn or scope but it wouldn’t be small, for size and freq your best bet is just 2 small iso loaded chambers and rock on, kinda boring but you should be able to blow out the front (loaded) pair if your trying
That kind of sounds like a plan.
Could someone point me to that cabinet design calculator that can give you dimensions from desired resonant frequency&driver? Can't find it now.
You may be aware, but just in case: when combined as isobaric pairs, this will actually be a 2 x 8" cabinet. Internal woofers don't contribute to the output. Unless they are extremely efficient drivers, output is likely to be pretty low for musical instrument use.