Home » Sponsored » Pi Speakers » Perfect Subwoofer for 4 pi
Perfect Subwoofer for 4 pi [message #47185] Thu, 23 June 2005 21:09 Go to next message
Phil Kollmeyer is currently offline  Phil Kollmeyer
Messages: 2
Registered: May 2009
Esquire
I recently completed my 4 pi's, and had planned all along to add a pair of subwoofers to complement them, but I have not decided what the best option is. The subwoofer I've been most impressed with, specification wise, is the VMPS larger subwoofer (VMPSaudio.com). It claims to have a -3dB point of 19 Hz, and output 20Hz at 115 dB with 5% distortion, which is hard to believe. So, before I'd purchase this kit, I'm curious what other subwoofer options would people suggest. I'd like it to be flat to nearly 20Hz, need a box of not much bigger than 8 cubic feet, be relatively efficient, and I have a price cap of about $350 per box. I've looked around a lot, but haven't found anything that really excited me.

You've got mail! [message #47188 is a reply to message #47185] Fri, 24 June 2005 06:45 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18707
Registered: January 2001
Illuminati (33rd Degree)

I suggest a JBL 2245 or Magnum 18LF in an 8.0ft3 to 10.0ft3 box tuned to 30Hz. They're the best sounding subs I've heard. Check your mail, I've sent plans.


Re: You've got mail! [message #47189 is a reply to message #47188] Fri, 24 June 2005 07:41 Go to previous messageGo to next message
andreaspaulsen is currently offline  andreaspaulsen
Messages: 7
Registered: May 2009
Esquire
Wayne,
let me have your plans also, you know what i'm doing !

Cheers
andreas

You've got mail too! [message #47190 is a reply to message #47189] Fri, 24 June 2005 08:44 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18707
Registered: January 2001
Illuminati (33rd Degree)


I have a VMPS larger [message #47192 is a reply to message #47185] Fri, 24 June 2005 23:14 Go to previous messageGo to next message
swett is currently offline  swett
Messages: 47
Registered: May 2009
Baron
I have a VMPS larger and it sounds nice as a sub, but I can't comment on its max output, because I've never pushed it anywhere close to a point where it sounds stressed. Its certainly not a weenie, as you'd expect with such a large sub with so much Vd.

The 18" woofers Wayne mentioned may be better, but at that point, why not just build the 7Pi-18? It'd probably be cheaper than a 4Pi + the 18" sub? Even if you don't have corners, you could still run the 18" in direct radiator mode.

-Ian

Re: I have a VMPS larger [message #47197 is a reply to message #47192] Sun, 26 June 2005 15:19 Go to previous messageGo to next message
Phil Kollmeyer is currently offline  Phil Kollmeyer
Messages: 2
Registered: May 2009
Esquire
Thanks for the advice Ian. I've already built the 4 pis, and my goal has been to have some remotely transportable speakers. I have a sedan, so moving the monstrous 18" subs Wayne suggests, would be rather challenging. I of course, enjoy giant speakers, but if you recommend the VMPS, that puts one step closer to buying the kit.

I already own a pair of VMPS Tower II speakers though, and have had a very challenging time tuning them for good response. Have you had similar troubles with the Larger Subwoofer?

Phil

Re: I have a VMPS larger [message #47198 is a reply to message #47197] Sun, 26 June 2005 15:32 Go to previous messageGo to next message
swett is currently offline  swett
Messages: 47
Registered: May 2009
Baron
I honestly haven't spent any time tuning it. It sounds good to me, but I only use it under 60hz and I don't have a large enough room to move it around much, especially since its so large.

It sounds better than my huge(12cuft) homebuilt sub which used an 18" woofer in a ported box, but thats what you'd expect for a professionally designed sub.

What is the best way to tune a sub? I was under the impression the radio shack meters weren't very accurate at low frequencies. Also, I don't have any real EQ, so I'm not sure what I could do to it.

-Ian

Wayne: Me too! Me too! [message #47199 is a reply to message #47188] Sun, 26 June 2005 19:04 Go to previous messageGo to next message
elektratig is currently offline  elektratig
Messages: 348
Registered: May 2009
Grand Master
Can I get the sub plans too? Pretty please? Even if I don't use them with my Pis? Thanks.

You've got mail! [message #47200 is a reply to message #47199] Sun, 26 June 2005 22:05 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18707
Registered: January 2001
Illuminati (33rd Degree)


Re: I have a VMPS larger [message #47201 is a reply to message #47198] Sun, 26 June 2005 22:13 Go to previous messageGo to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18707
Registered: January 2001
Illuminati (33rd Degree)

You can tune fb with impedance measurements. If there are no unusual cabinet features, it should be as predicted by the Helmholtz formula:

Previous Topic: Bass Driver for horn
Next Topic: Pi Fours- Low Frequencies
Goto Forum:
  


Current Time: Sat Jun 15 18:27:29 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest