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Old 8th April 2005, 12:50 AM   #1
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Default What would you recommend?

I just recently found this site, and I must say that it's loaded with knowledgable people

So let's see if we can tap into that knowledge...


I am looking to build my own speaker system, starting with a subwoofer. I've looked at and listened to numerous retail setups, and was not impressed with the price and the sound. I'm currently using a simple KLH setup (5.1). It's a good thing I paid next to nothing for them.

The finished size of the sub is somewhat constrained. Somewhere in the neighborhood of 2 foot x 2 foot x 2 foot (but that is negotiable). I want to use them for both HT and for music of all sorts. And I like the fact that the sub I currently have has it's own volume control on it. (Yes, I am a noob )

When using it for HT, I want to be able to feel the couch moving across the floor. But at the same time, be able to use it for listening to whatever kind of music that I feel like at the time. So flexibility and durability are strong factors.

My reason for doing this is economics. The retail items are either priced waaaaayyyyy to high or they just have really bad sound/not enough oomph. I don't have a large budget to work with, but if it performs well, the cost might be justifiable. All electronics I plan on building myself, including the crossover and amps, so ideas for those are welcomed as well.

Thanks
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Old 8th April 2005, 01:04 AM   #2
mike.e is offline mike.e  New Zealand
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Budget

www.adireaudio.com -> shiva/tempest.

Buying a plate amplifier solves the electronics problem,you can continue to read up regarding DIY electronics in the mean time.

You can easily spend more,avalanche subs for example
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Old 8th April 2005, 06:48 AM   #3
simon5 is offline simon5  Canada
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If Adire Audio is backordered, a good alternative is www.ascendantaudio.com

Atlas 12 and Atlas 15 are a bit more expensive but they are new so better than the old Shiva and Tempest and they work with boxes around the same size.

I made a subwoofer with a Shiva, and it was 22.5x22.5x26 so almost perfect for you hehe!

It can shake the couch and music is great.
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Old 8th April 2005, 09:23 AM   #4
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Default Re: What would you recommend?

Quote:
Originally posted by desert00rat
somewhat constrained... 2 foot x 2 foot x 2 foot
8 ft^3 is not very constrained

How constrained is your budget?

dave
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Old 9th April 2005, 08:10 AM   #5
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Comparable with or less than retail units of similar size, with preference on the less than

to mike.e and simon5: Thanks. I will look into both of those
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Old 9th April 2005, 10:34 AM   #6
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Quote:
Originally posted by desert00rat
Comparable with or less than retail units of similar size, with preference on the less than
Way less than retail with better performance is usually a given with a diy subwoofer....

We need a $$ budget so we know how crazy to go... like can i suggest 4 Adire Maelstroms in a push-pull-push-push isobarik configuration -- that would fit in your 2 foot cube and move alot of air...

dave
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Old 11th April 2005, 07:46 AM   #7
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Quote:
Originally posted by planet10


Way less than retail with better performance is usually a given with a diy subwoofer....

We need a $$ budget so we know how crazy to go... like can i suggest 4 Adire Maelstroms in a push-pull-push-push isobarik configuration -- that would fit in your 2 foot cube and move alot of air...

dave
4 - 18" subs in a 2 foot cube???

The specs of the Malestrom are NICE, but I can't justify $1200+ for a sub.

For the sake of argument, lets go with 2 possibilities. A $300 limit and one that doubles that, $600. Those aren't absolute limits...more like guidelines, so a deviance from that is possible.

Thanks for all the input
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Old 11th April 2005, 08:09 AM   #8
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Quote:
Originally posted by desert00rat
4 - 18" subs in a 2 foot cube???
yep...based on the standard sealed box -- 4 drivers "push-pull-push-push isobarik" fit in the same volume box as a single driver. (i have 8 Foster 12" downstairs, just itching to go into a stereo pair)

Quote:
A $300 limit
A single Maelstrom fits in that same 2 foot cube, but i'd give up sheer air moving, and go with a pair of drivers push push (there are tons of good 12" drivers that cost between $100 & $150 (or a bit more))... find 1 that can live in a 4 ft^3 or less box, double the box size and fit the 2 drivers on opposite faces.

For double the dollars -- build 2 subs.

(I didn't consider the cost of an amp into the budget)

dave
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Old 11th April 2005, 09:21 PM   #9
simon5 is offline simon5  Canada
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With 300$, I would go with something like I did.

A single Adire Audio Shiva or Ascendant Audio Atlas 12, with a 250W Rythmik Audio 250A basic plate amplifier, a dual flared 4 inches diameter Precision Port in a ~150 liters internal box (external box size is under 8 cu.ft easily) tuned to ~18 Hz.

With 600$, I would go with a 350W Rythmik Audio 370 SE (with the 24dB x-over) plate amplifier, a single Ascendant Audio Avalanche 15 and try to think how I would fit dual flared ports in a ~150 liters enclosure by respecting the 34 m/s limit...
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Old 15th April 2005, 11:13 AM   #10
Tweeker is offline Tweeker  United States
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For $320 + wood etc Id buy an Atlas 15 put it in the 8 cu foot box and port it tuning to 19hz. 350w Rythmic amp to power it.

For $580 + wood etc Id buy an Avalanche 18 and put it in a 7.5 cu foot box sealed. Nady XA 900 to power it. Put one voice coil on each channel for 800w. For $650 Europower 1500 to power for excess.
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