ProSoundWeb Community

Please login or register.

Login with username, password and session length
Advanced search  

Pages: [1]   Go Down

Author Topic: K-sub  (Read 958 times)

Tim Perry

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1150
  • Utica-Rome NY
K-sub
« on: December 09, 2013, 11:12:17 pm »

For those of you who have never seen the inside, here ya go. 
Logged

Tim Perry

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1150
  • Utica-Rome NY
Re: K-sub
« Reply #1 on: December 09, 2013, 11:15:18 pm »

rhetorical question:   why does any project that involves T-nuts also involve one of them stripping out and spinning around?
Logged

duane massey

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 938
Re: K-sub
« Reply #2 on: December 10, 2013, 12:19:06 am »

Poor quality T-nuts. I use "Hurricane" nuts on all my cabinets, and have had zero problems.
Logged
Duane Massey
Technician, musician, stubborn old guy
Houston, Texas

frank kayser

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 258
  • Maryland suburbs of Washington DC
Re: K-sub
« Reply #3 on: December 10, 2013, 11:12:34 am »

Thanks for sharing.
Hmmm... Simple front facing drivers. I don't know why, but I thought there was something a bit more esoteric going on in there.   
Logged

Art Welter

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 536
Re: K-sub
« Reply #4 on: December 10, 2013, 11:42:14 am »

Simple front facing drivers. I don't know why, but I thought there was something a bit more esoteric going on in there.
Frank,

"Simple front facing drivers" would be visible from the front.
The bandpass duct between the drivers and the outside world is the more "esoteric" portion of the design, allowing the "sub" to be efficient in a very narrow bandwidth, about one octave from 55-110 Hz.

Art
« Last Edit: December 10, 2013, 11:51:02 am by Art Welter »
Logged

Tim Perry

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1150
  • Utica-Rome NY
Re: K-sub
« Reply #5 on: December 10, 2013, 05:45:43 pm »

Frank,

"Simple front facing drivers" would be visible from the front.
The bandpass duct between the drivers and the outside world is the more "esoteric" portion of the design, allowing the "sub" to be efficient in a very narrow bandwidth, about one octave from 55-110 Hz.

Art

quote from wiki:  "A 4th order electrical bandpass filter can be simulated by a vented box in which the contribution from the rear face of the driver cone is trapped in a sealed box, and the radiation from the front surface of the cone is into a ported chamber. This modifies the resonance of the driver. In its simplest form a compound enclosure has two chambers. The dividing wall between the chambers holds the driver; typically only one chamber is ported.

If the enclosure on each side of the woofer has a port in it then the enclosure yields a 6th order band-pass response. These are considerably harder to design and tend to be very sensitive to driver characteristics. As in other reflex enclosures, the ports may generally be replaced by passive radiators if desired. An eighth order bandpass box is another variation which also has a narrow frequency range. They are often used to achieve sound pressure levels in which case a bass tone of a specific frequency would be used versus anything musical. They are complicated to build and must be done quite precisely in order to perform nearly as intended."

In this case the speakers are 'facing' the sealed box in the rear.
Logged

frank kayser

  • Sr. Member
  • ****
  • Offline Offline
  • Posts: 258
  • Maryland suburbs of Washington DC
Re: K-sub
« Reply #6 on: December 11, 2013, 12:25:33 am »

Frank,

"Simple front facing drivers" would be visible from the front.
The bandpass duct between the drivers and the outside world is the more "esoteric" portion of the design, allowing the "sub" to be efficient in a very narrow bandwidth, about one octave from 55-110 Hz.

Art

Uhhh...  foot in mouth again.  Art and Tim, please excuse me while I change feet.  Thanks for the education. 
« Last Edit: December 11, 2013, 12:30:46 am by frank kayser »
Logged

Samuel Rees

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 1414
  • Washington, D.C.
Re: K-sub
« Reply #7 on: December 11, 2013, 08:31:57 am »

Why the extra wheels?
Logged
SoundCraft Si Compact 24

TJ (Tom) Cornish

  • Hero Member
  • *****
  • Offline Offline
  • Posts: 2237
  • St. Paul, MN
Re: K-sub
« Reply #8 on: December 11, 2013, 08:42:45 am »

Logged
Pages: [1]   Go Up
 


Page created in 0.103 seconds with 25 queries.