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DIY sub - suggestions

post #1 of 11
Thread Starter 
Hey

I've been reading several threads on this forum, and Im very tempted to go to the dark side, - and make my own subwoofer. But - im very green on this area.

After SVS announced that a new Ultra would be on the market soon, - I knew It would only eat me up inside, if I didn't get one.. So, I sold my PB12U - so I could get the new Ultra - when it comes.

BUT!

Since then, - I've also considered going for a HSU VTF3-HO with/turbo.

So, what I basically want, is a DIY subwoofer, that can outperform both the current Ultra, and the HO, - in SPL, - and preferably SQ also.

Size doesn't really matter - but if I could build a subwoofer that is smaller than the current PB12Ultra, - that wouldn't hurt. I want a BOX, - not a sonotube (because it seems really hard, - and like a lot more work to make one, - than a box).

I already got a MBM-12.. so if im actually going to the dark side - the sub should play from 15-80hz or something - with LOTS of SPL (Well, more than the PB12U and HSU-VTF3HO with turbo).

I've seen that Soundsplinter, TC-sounds, and Avalanche, and Dayton are very popular here. All the technical specs doesn't really say much to me. But, im hoping you guys can help me with that, if I decide to make a DIY sub. What I have in mind is, - either a 12", - or a 15".

And then we have the amp. My father-in-law runs a Hifi/PA business/store - so, I can get a PA amp quite cheap from him. I think he can get most brands.. But, I guess I need some sort of filter also ?? if im going to use an external amp ?

To sum it up.. My 'dream' DIY sub:

-Box shaped (preferably smaller than the current SVS PB12U)
-Stellar performance (Better SQ and more SPL than the PB12U/VTF3-HO.w/Turbo)
-12" or 15"
-Sealed or ported (doesn't really matter)
-$$$ (preferably less than 1000$ including amp, woofer, materials etc..)


So - can anyone give me some suggestions, pin-points..

Regards

Egil
post #2 of 11
I would suggest one TC-2000 15" SVC with two of their 15" passive radiators tuned to ~16 Hz. The larger the box you can make, the better (up to ~300 liters). Although I wouldn't make smaller than ~150 liters. Use around 1-2kW amp. That should beat both old AND the new Ultra!

Dual TC-2000 15" in a ~150L sealed box would be another choice.
post #3 of 11
Thread Starter 
Quote:
Originally Posted by Richard Mayer View Post

I would suggest one TC-2000 15" SVC with two of their 15" passive radiators tuned to ~16 Hz. The larger the box you can make, the better (up to ~300 liters). Although I wouldn't make smaller than ~150 liters. Use around 1-2kW amp. That should beat both old AND the new Ultra!

Dual TC-2000 15" in a ~150L sealed box would be another choice.

Thanks for the input.

Those drivers looks nice, - and it'll be a total of 625$ for only the drivers.

Then I have to buy an amp, MDF materials - and a filter (?)

Im gonna have to check how much I can get a good 1-2kw amp for (btw, any suggestions on brands I should look into?).


And, more suggestions are always welcome..
post #4 of 11
For the cost of the PRs you can buy a second driver. Get a pair of the SoundSplinter RL-p15" for $500+ shipping. Go with sealed alignment and use an LT circuit. That will give you more output and the improved transient response inherent in a seal box.
post #5 of 11
Quote:
Originally Posted by Thomas-W View Post

For the cost of the PRs you can buy a second driver. Get a pair of the SoundSplinter RL-p15" for $500+ shipping. Go with sealed alignment and use an LT circuit. That will give you more output and the improved transient response inherent in a seal box.

That's true. Although then he needs a little bit more power, preferably two ~1.5-2kW amps. $1000 limit might be a little bit low for that...
post #6 of 11
Thread Starter 
You guys are the experts, not me.. .

But, - Im gonna check with my father-in-law how much I have to pay for some highpowerered amps. But - what brand should I look into? I remember he's had some QSC's, Behringer's, Crown... Are these good? (Well, I know the Crown is GOOD, but also to expensive I guess).
post #7 of 11
Quote:
Originally Posted by Egil View Post

You guys are the experts, not me.. .

But, - Im gonna check with my father-in-law how much I have to pay for some highpowerered amps. But - what brand should I look into? I remember he's had some QSC's, Behringer's, Crown... Are these good? (Well, I know the Crown is GOOD, but also to expensive I guess).

Behringer EP2500 is a good and cheap amp.
QSC RMX2450 and PLX2402 are better, but more expensive.
post #8 of 11
Thread Starter 
Apart from the drivers, - and amps.. Do I need something else? Is there a filter in the amps already.. or ? Im thinking about subsonic filter and such. So I don't bottom the driver(s) etc..

2 suggestions so far... One requires more amp power.

Both are major upgrades.

And they both require a big box!

And they are both sealed designs?
post #9 of 11
Quote:
Originally Posted by Egil View Post

And they are both sealed designs?

No, it looks like there is a sealed design and a passive radiator (PR) design. A PR is more like a ported system except instead of a port it has non-powered mass loaded cones.
post #10 of 11
Quote:
Originally Posted by Egil View Post

And they both require a big box

The RL-p15" can be used in a box as small as 3 cu ft

Since you're new to this, you might want to use the forum's search function and find out more about these drivers, designs they've been used in, and LT aka Linkwitz transform circuits.
post #11 of 11
Thread Starter 
The more I read, the more confused I get..

I found a nice thread here:
http://www.htguide.com/forum/archive...4/t-18218.html

I've read that the main difference between the TC driver, and the SS driver, - is that the TC driver plays 1-2dB louder.

It also seems that the SS rl-p15" is popular in 2x sealed designs. Won't 1 sealed box with SS rl-p15" be sufficient enough for me ?

And I've read about the LT, - which seems to be some sort of EQ for sealed designs - down low... So I guess it would be handy with both a SS rl-p15" and TC 2000 15" SVC design.


So far, im leaning towards the Dual (or, single, if possible) SS rl-p15" sealed design. If I can get a decent AMP for this.
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