Adire Shiva 12" subwoofer project plans
Hi,
Does anyone know where i could find plans for a shiva 12" subwoofer. I want to use it with an audax home theater kit.
Thanks
Pete
Hi,
Does anyone know where i could find plans for a shiva 12" subwoofer. I want to use it with an audax home theater kit.
Thanks
Pete
thanks ThomasW
My problem was with that design was primarily the crossover. Im new to speaker building and i wasnt sure if a sub woofer needed a crossover or not by that plan it mentions it but doesnt give any deatils of construction of it. Do subwoofers need a crossover?
My problem was with that design was primarily the crossover. Im new to speaker building and i wasnt sure if a sub woofer needed a crossover or not by that plan it mentions it but doesnt give any deatils of construction of it. Do subwoofers need a crossover?
Yes subs must have a crossover. And active is certainly the best way to go. The parts cost for a high quality passive can equal or exceed that of an active unit.
Since you're in OZ go with something from ESP
http://sound.westhost.com/biamp-vs-passive.htm
Since you're in OZ go with something from ESP
http://sound.westhost.com/biamp-vs-passive.htm
what are you going to use to power it . ?
If you get a plate amp from jaycar the x/o is built in
http://www1.jaycar.com.au/productVi...&pageNumber=&priceMin=&priceMax=&SUBCATID=443
I have a shivas in a ported box using the jaycar 350watt plate amp
if its to expensive they have smaller
If you get a plate amp from jaycar the x/o is built in
http://www1.jaycar.com.au/productVi...&pageNumber=&priceMin=&priceMax=&SUBCATID=443
I have a shivas in a ported box using the jaycar 350watt plate amp
if its to expensive they have smaller
My problem is i have no idea how to build a sub. Sure i could buy the driver and get an amp but how do i know how to wire the cross over or the proportion of the enclosure and the baffels.
I would like to work off plans of a tried and tested design built around the shiva 12" driver cause i hear its one of the best. Can anyone tell me where i could get such plans or give me some advice on where to go from here?
I would like to work off plans of a tried and tested design built around the shiva 12" driver cause i hear its one of the best. Can anyone tell me where i could get such plans or give me some advice on where to go from here?
If you go to the adire web site http://www.adireaudio.com/
then click on diy audio then click on shivas then click on techinal
choose app notes you will see app papers on building a sealed or ported box for shivas
down load the one you want they both contain plans for building 3 different size box .
remember if you want to build a ported box you will a rumble filter
can be bought from jaycar in a kit .
if you dont want a down firing its just a matter of building it on its side
then click on diy audio then click on shivas then click on techinal
choose app notes you will see app papers on building a sealed or ported box for shivas
down load the one you want they both contain plans for building 3 different size box .
remember if you want to build a ported box you will a rumble filter
can be bought from jaycar in a kit .
if you dont want a down firing its just a matter of building it on its side
Ive already got those instructions and i can follow all of it no problem excpet for how to consturct the crossover.
If you're building the audax home theater kit, then surely you'll be using an av receiver ?
If so the av receiver will do the crossover stuff for you, leaving you only to buy an amp.
Cheers,
Rob
If so the av receiver will do the crossover stuff for you, leaving you only to buy an amp.
Cheers,
Rob
Ah great thanks Rob, thats what was confusing me. So bisically all i need is the driver and the amp wire it up and im set? So the hardest thing will be the enclosure i guess.
something to be aware of is that the jaycar plate amps all have a 6db boost at 35hz .
when i built mine the general opnion was that this is a bad thing & needs to be corrected by having a couple of resistors changed.
there are other places that have plate amps as well . wes components.com have them
hopefully there are other aussies here who have other ideas as to where else you can get a plate amp from as well
when i built mine the general opnion was that this is a bad thing & needs to be corrected by having a couple of resistors changed.
there are other places that have plate amps as well . wes components.com have them
hopefully there are other aussies here who have other ideas as to where else you can get a plate amp from as well
When it comes to tinkering with resisters i have no idea, thanks for the heads up i will ask about that when i get one.
I power my subs with a pair of big old jbl6260 amps. I bought each of these used at about the price of a plate amp each.
Might be worth looking in the 2nd hand pa shops to compare.
Good luck with your project btw🙂
Rob
Might be worth looking in the 2nd hand pa shops to compare.
Good luck with your project btw🙂
Rob
IMO the XLS is better value than the Shiva in Australia. Contrary to popular belief it can work quite well in a vented box and achieve SPL and extension to match the Shiva. The following plot shows the XLS (blue) vs the Shiva. The XLS has a smaller box (90L which is large for this driver) than the Shiva which is in a 130L box.
XLS you can get for $220 in Australia compared to $300 for the Shiva.
The downside is that the XLS needs more power, but this is due to the smaller box, such is the nature of tradeoffs.
Note: I realised after making this chart that the Shiva was shown without using all of its excursion. With 250 watts it has a little more output than shown ~ 2.5db more, while being about the same at 20 Hz. The XLS is using 350w in that chart.
Note 2) I don't necessarily recommond this exact size for XLS, it's just a quick indication of this driver as a viable alternative. As far as I'm aware, the XLS has lower distortion in the mid to upper bass, which is where distortion perception is apparently more acute. The XLS is also better quality construction.
XLS you can get for $220 in Australia compared to $300 for the Shiva.
The downside is that the XLS needs more power, but this is due to the smaller box, such is the nature of tradeoffs.
Note: I realised after making this chart that the Shiva was shown without using all of its excursion. With 250 watts it has a little more output than shown ~ 2.5db more, while being about the same at 20 Hz. The XLS is using 350w in that chart.
Note 2) I don't necessarily recommond this exact size for XLS, it's just a quick indication of this driver as a viable alternative. As far as I'm aware, the XLS has lower distortion in the mid to upper bass, which is where distortion perception is apparently more acute. The XLS is also better quality construction.
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