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Old 24th November 2003, 11:31 AM   #1
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Default My next *pair* of subs for sure!

/Circlotron - has opened his big mouth so he cannot turn back.
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Old 24th November 2003, 12:03 PM   #2
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they are on sale at jaycar for this november for $99..... if I had money, I'd pick up a couple..
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Old 24th November 2003, 02:45 PM   #3
phs is offline phs  Australia
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mmm they are dirt cheap

what kind of power are you looking at for them Circlotron?

would you recommend one of the power amps 240W/350W that jaycar also sell?
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Old 25th November 2003, 11:21 AM   #4
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Skinnyboy - yeah, I went in to the Springvale store at lunchtime today and saw them there at that price. Naturally it coincides with me being broke. D'oh!

phs - I'm only going to run them at about 45-50 watts each; maybe go a bit higher in the future. The sensetivity of these drivers is only pretty average though.

Haven't actually seen that amp but usually the stuff they sell is reasonable.

I (being old) am not so much interested in wrecking the house with a dB deathBox as simply being able to go down LOW!!! To that end I am going to go haywire with bracing the box internally. I have figured out a really effective and simple way to do this. Will post a model of what I intend to do. Basically it involves using a strut from the centre of one panel to the centre of the opposite panel. I think this is better than simply stiffening the panel because as one panel tries to flex out under air pressure, the opposite panel tries to bend the opposite direction so they both pull on each end of the strut, which as far as each panel is concerned appears to be *absolutely* rigid.

They're gunna be 300 litres each plus ~25 litres for bracing and driver. I'll just have to try them outside one day with a selected track. P.S. If anyone has any suggestions for alternative reasonable price drivers, I'm all ears.
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Old 25th November 2003, 12:39 PM   #5
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hmm.. not having money sux doesn't it..
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Old 25th November 2003, 01:49 PM   #6
michael is offline michael  Australia
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Circlotron, id say dont do it, 2 drivers in 600L of volume have lower output than a single shiva in 85L, and a 142L shiva will go as low without EQ.
and when i say more output, the shiva has 7db!!!! more at 30Hz, and that is room shaking bass, and then below 20Hz it still ha more.
A Shiva is $300, but when u consider the cabinet cost of a 600L box, or 2 300L boxes, an 85L or even a 140L is much more appealing cost and building wise.

And on top of all this the shiva is an audiophile quality woofer thathas rave reviews and amazing performance to dollars ratio.
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Old 25th November 2003, 03:41 PM   #7
phs is offline phs  Australia
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anyone heard or tried the tempest?

http://www.adireaudio.com/diy_audio/...re/tempest.htm

"With over 2.7L of displacement capability, Tempest can reach 104 dB SPL at 20 Hz, in a sealed box. It can reach 108 dB SPL @ 25 Hz, in a sealed box. That's above home theater reference levels! And placed in a vented box, it can reach even higher SPLs (easily above 115 dB SPL anechoic from 20 Hz and up. In room, expect peak levels well in excess of 120 dB SPL)."




i wonder how much Acoustic Concepts are asking for them
are they the only Aus distributors for the Shiva too?


http://www.acousticconcepts.com.au/tempestspecs.htm
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Old 25th November 2003, 07:28 PM   #8
Salas is online now Salas  Greece
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Default Room gain?

Hello,

Did you allow for room gain?
If this is a maximally flat anechoic simulation you gonna get a hump in a real enviroment.
Just a reminder, many people prefer their bass like that though.
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Old 25th November 2003, 11:37 PM   #9
michael is offline michael  Australia
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yes accoustic concepts are the distributor for all adire stuff in australia, the shiva, tempest, maelstrom, tumult, all those names held in high reverance
they are also the distributor for seas drivers and have the best prices but you have to email for any prices you want but he will generally send you a complete price list.
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Old 26th November 2003, 01:34 AM   #10
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Default 300L is annoying

with 300L i could fit a good sub in there,

id just get a shiva,or a Maelstrom

altho,heres my cheap sub i got...

link to 8"

planning on my 150L basshorn for it..117db with 20watt or so.

Quote:
anyone heard or tried the tempest?
thousands of people have.its your normal high excursion low efficiency woofer.

see the 'home theatre forum' Idj ust get a Maelstrom instead.Slightly more volume,more midbass output.

Quote:
Hello, did you account for room gain/
I dont take into account too much for room gain i dont know,it may be too low and i may have insufficient output.TOo much output can simply be EQd out.



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