The point is you can reach that low, not use alot of power, and still do structural damage. With an average plate amp, there is no need for woofer protection regarding LFE. With a BR, you need a high pass filter, several hundred watts, and be lucky to reach to 20hz.
My 8 pcs. PD 2450 delivers 130 dB at 20hz in listening position and 136db at the rear wall🙂
Closed box with 380liter / driver
Image of Subwoofer and frequency response
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The stage will be covered with a layer of 15mm MDF and thin black carpet
Front shall have standing panel
Hate too much visible wood - I am a carpenter🙂
Front shall have standing panel
Hate too much visible wood - I am a carpenter🙂
Hello DIYers 🙂
5yrs late, for this conversation, haha, oh well. 😉
Here's the Opus Audio 224 (PD2450)
affectionately known as 'National Thunder' (by me, anyway)
and here's my single 24's, the wheelie sub.
Utterly fabulous in reflex. The 2150 'doesn't work' in reflex, imo, but the 2450 does, totally.
In fairly regular use still, after quite a few years. In fact, they'll be out at Alchemy Festival, in Lincolnshire, next weekend, on the Mushroom Stage.
I got 4Ω drivers, to maximise amp power, and standardise impedences with my double 15" bass.
5yrs late, for this conversation, haha, oh well. 😉
Here's the Opus Audio 224 (PD2450)
affectionately known as 'National Thunder' (by me, anyway)
and here's my single 24's, the wheelie sub.
Utterly fabulous in reflex. The 2150 'doesn't work' in reflex, imo, but the 2450 does, totally.
In fairly regular use still, after quite a few years. In fact, they'll be out at Alchemy Festival, in Lincolnshire, next weekend, on the Mushroom Stage.
I got 4Ω drivers, to maximise amp power, and standardise impedences with my double 15" bass.
Why didn't you angle the top like you did the bottom? Those 24's look awesome though!
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Internally it is, like the bottom, but with a shelf, it's just transparent in the sketchup.
The slopey external cut out is for wheels.
the top square bit has cut outs for handles, like a scoop bin, which also house the Speakon sockets, so they can't be used as steps by munters, & broken.
They also make a ladder up the stack, when there's 4 x double 15" on top.
Different arrangement here, but you can see the idea, albeit horrizontally.
I had a scoop bin system many years ago, and I still haven't seen an easier way of one person moving a fair sized speaker.
😉
The slopey external cut out is for wheels.
the top square bit has cut outs for handles, like a scoop bin, which also house the Speakon sockets, so they can't be used as steps by munters, & broken.
They also make a ladder up the stack, when there's 4 x double 15" on top.
Different arrangement here, but you can see the idea, albeit horrizontally.
I had a scoop bin system many years ago, and I still haven't seen an easier way of one person moving a fair sized speaker.
😉
Hi everyone , one Can read and read but it won’t help much if one doesn’t understand, everything, am not a genius, will never claim to be , am good at something’s bad at other , am getting some PDN 2450, would like to build 4 subs to use in the center of our rig so far we are running 8*21” BR ported, they go down to 26hz , so would like abit of help with the 24” , if not getting lower same range would be fine , where do I start ,
Thanks Francis
Thanks Francis
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