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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: wide baffle line array
items: Re: wide baffle line array
items: Full Stack
items: Re: Full Stack
items: 18" round
items: Re: 18" round
items: Baffle step and collapsing directivity

wide baffle line array
type: item
description: where we can't see any of them around? shaucheong
creator: gabbe
date: 2009-02-03T20:22:10-00:00

Re: wide baffle line array
type: item
description: can anyone show me some link?
creator: shau cheong
date: 2009-02-04T12:56:48-00:00

Re: wide baffle line array
type: item
description: How wide would you like the baffle to be? What is your goal in making the baffle wide? -Linc
creator: lcholke
date: 2009-02-04T23:44:26-00:00

Re: wide baffle line array
type: item
description: Is this what you mean. http://picasaweb.google.com/litobe/DropBox?authkey=mQsfIokfuvs#5297911595011330274
creator: tolits
date: 2009-02-07T17:34:00-00:00

Full Stack
type: item
description: Are those yours? Did you Bi-amp? -Linc
creator: lcholke
date: 2009-02-08T15:14:56-00:00

Re: wide baffle line array
type: item
description: i plan to use 8pc 4" mid bass driver with a line of tweeter on one side, i want them to look a bit difference from most line array speaker, i prefer the baffle to be around 18" to 20" curve
creator: shau cheong
date: 2009-02-08T16:26:09-00:00

Re: wide baffle line array
type: item
description: hi lito thanks for showing the link but i am building something small and it is for home use shaucheong
creator: shau cheong
date: 2009-02-08T16:27:34-00:00

Re: Full Stack
type: item
description: Hi Linc, Yes.I am using DCX and triamp them. Lito
creator: tolits
date: 2009-02-08T17:28:48-00:00

18" round
type: item
description: Those will be good looking. The rounded front baffle will reduce the baffle diffraction. Are they tube type geometry? How will you construct them? How tall will they be?
creator: lcholke
date: 2009-02-09T16:28:02-00:00

Re: 18" round
type: item
description: i will construct them in an eye shape with 8, 4" mid bass and 22 paper cone tweeters shaucheong
creator: shau cheong
date: 2009-02-09T18:24:31-00:00

Re: wide baffle line array
type: item
description: Quite honestly, I cannot hear baffle diffraction issues despite all the hoopla by the tech people about it.
creator: Marlboro
date: 2009-02-15T16:10:06-00:00

Baffle step and collapsing directivity
type: item
description: I was just in another discussion with some folks that considered baffle step correction a mandatory step in crossover design. I don't dismiss it entirely, but I do think it is sometimes given too much emphasis. Another thing I noticed is that these people didn't consider the collapsing directivity of the drivers, which may or may not have been more an issue than directivity changes from the baffle becoming acoustically large at high frequencies, which is what baffle step really is. Art Array Crossover - Further Evaluation This speaker isn't being held up as an example of the state of the art in line arrays or anything like that. It has a line of eight midwoofers and a single point source dome tweeter. It is a capable speaker that sounds good on a budget. But I bring it up here because the midwoofers do appear to exhibit rising response from collapsing directivity, either due to radiator size or baffle size. In spite of that, it tends to get rave reviews from people that have heard it. ART Array DIY All speakers rolloff due to mass and inductance. But all also have collapsing directivity as frequency rises. In some cases, rolloff from mass is countered by on-axis rising response from collapsing directivity. A speaker like that will have flat response on-axis up to the point where inductance kicks in. I've noticed that high-efficiency woofers often have rising response from collapsing directivity that rises faster than mass rolloff falls. Smaller woofers also sometimes exhibit this behavior, and those are the kinds of drivers that are probably common in mini-monitors and line arrays. Whether directivity increases at HF due to baffle size or radiator size, there is going to be some directivity increase at HF, and that does introduce acoustic EQ on-axis that effectively introduces rising response. In some cases, mass rolloff will counter it with falling response that matches or exceeds it, in other cases, mass rolloff will not quite counter the increased directivity and…
creator: Wayne Parham
date: 2009-02-16T18:20:06-00:00