AudioRoundTable.com - RDF feed
type: channel
description: Audio advice and discussions with audiophiles and professionals. Free discussion forums, open to all and frequented by industry experts. Ask questions and get advice on stereos, speakers, hi-end amplifiers, pre-amps, home theater, tube hi-fi, turntables, vinyl, tweaks, music, films, video, DVDs and more.
items: Tapering--- can someone clue me in on this?
items: Re: Tapering--- can someone clue me in on this?
items: Correction on Ratio
items: Re: Correction on Ratio

Tapering--- can someone clue me in on this?
type: item
description: The subject of tapering for line arrays came up a number of days ago. Can someone say more about it?
creator: lon
date: 2004-10-26T02:38:12-00:00

Re: Tapering--- can someone clue me in on this?
type: item
description: Yes. Power tapering is feeding less signal symmetrically to the outer (at the top or bottom of the line) drivers to contour the wavefront. Power tapering is widely used to reduce far field side lobe levels in pro sound arrays. For near field line arrays tapering can be used to reduce sound blooming (unequal room power loading). Power tapering is best applied to the woofer line and works best for me if the ratio of the number of drivers in the taper is less than one. For example, in the Linus 2 array there are 10 mid bass drivers tapered in a 3/2/2/3 drivers feed. My white paper explains more details. Jim Near Field Line Array White Paper
creator: Jim Griffin
date: 2004-10-26T20:06:50-00:00

Correction on Ratio
type: item
description: Let me correct my mistake in the above post. The power tapering ratio should be less than 2 to 1 for best results in my opinion. Jim
creator: Jim Griffin
date: 2004-10-26T22:46:30-00:00

Re: Correction on Ratio
type: item
description: Hi Jim, I heard good things about the DIY gathering in Iowa from Jim Holtz. What was your favorite part of the event? How did your talk go? Do you discuss tapering in your presentation? Wayne
creator: Wayne Parham
date: 2004-10-30T06:04:49-00:00

Re: Correction on Ratio
type: item
description: Wayne, I attended the DIY loudspeaker event in Dayton, OH that weekend. Jim Holtz and others have posted their observations about the Iowa event. Jim
creator: Jim Griffin
date: 2004-10-31T18:11:19-00:00

Re: Correction on Ratio
type: item
description: Silly me, I confused the two events. How was the Dayton one?
creator: Wayne Parham
date: 2004-10-31T19:37:09-00:00