SI sub?? help

[Kingnoob]

I am getting the SI- 15" sub-woofer , does anyone own this is it better in a Sealed or Ported box for movies
one calc said sealed was best, but most sites say ported have higher Spl

Can a 500w Rms bash amp power it well? or do you know a cheaper better amp for the price
This ampBash 500W Digital Subwoofer Amplifier 300-752

[Inductor]

Do you mean this?
Stereo Integrity HT 15" Subwoofer

It works nicely in a bass reflex system, also sealed.
I advise you to use a VB = 130.5 L tunned to FB = 16.9 Hz. F3 is 25 Hz (19Hz in room).
Sealed system has F3~42Hz, so much different.

but most sites say ported have higher Spl

Sensitivity it's the same.
Max SPL
Ported: 1.00 m 121.5 dB (V=98.92 V, Pmin ~2057.6 W/4.8 Ohms/103.5 Hz)
Sealed: 1.00 m 114.2 dB (V=42.73 V, Pmin 493.6 W/4 Ohms)

[m R g S r]

Go on hometheatershack.com. Check out the DIY subwoofer section. People love the SI subs....for The price they're great.

[Kingnoob]

which calculator is the best for DIY subwoofers??
The only thing that confuses me is how you wire this speaker to the bash amp?

[Inductor]

...how you wire this speaker

Is that a problem?

[Inductor]

Do you know how to use WinISD? others?
UniBox - Unified Box Model for Loudspeaker Design

[Kingnoob]

Originally Posted by Inductor

Is that a problem?

Yes ! Exactly the problem I need help with that....

[Kingnoob]

wiring the SI Subwoofer to the bash amp is confusing.
What is better D2 model , or D4 sub
2+2 ohms = 4ohm in series I think.

So I should get the 2 ohm per coil version probably??

[Inductor]

3 questions.

1st - With a 4 ohm amp I would want to buy the Stereo integrity 2+2 ohm per coil woofer right??

2nd- I want to know how to wire in Series this DVC sub-woofer for 4ohm to run with the bash-500 amp

3rd- Which amp would you suggest? To power Stereo integrity HT 15" Dual 2 Ohm subwoofer.

I don't know if the PM went trough or not so again,
The 500w rms bash amp is knowed as a very best in it's class by this forum. Others diy'ers can give you more references in what amp to choose.

2+2 Ohm DVC vs. 8+8 Ohm DVC
"2+2 ohms = 4 ohm in series",
or a 8+8 Ohm DVC (paralel), both are good for a 4 Ohm amp.
(In case you have a 4+4 Ohm DVC just connect one coil and will be fine.)

How to connect one DVC?
All speaker drivers are different, but all connections are almost identical.
Please refer to a printed pic.
http://stereointegrity.com/docs/DVCwiring.pdf

1. DVC wiring. For a dual 8 ohm voice coil drivers in parallel (4 Ohm)
2. DVC wiring. For a dual 2 ohm voice coil drivers in series (4 Ohm)

[Kingnoob]

SO buying a 4+4 ohm Voice coil and hooking one coil up would give the Sub-woofer full power correct?
Or does a 2+2 series sound better, and deliver more power?

Now all I need to know is what sized Port I will need Ill look at calculators I guess.
Thanks