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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: 7 Pi Boxplot
items: Alternate tuning for the JBL 2226
items: Re: Alternate tuning for the JBL 2226

7 Pi Boxplot
type: item
description: Hi Wayne, for use of a 2226 as a sub Only, in a 7Pi, I like the looks of a 5 up to a 6 cu' box in Boxplot. It is showing the least drop in response down to 20hz if the ported box is tuned to about 23hz. this is some what lower than a standard tuning of 30 or 40hz. are there disadvantages to a box tuning of 23hz i'm not seeing? Also in a 7Pi corner horn. if I were to build just the chamber box, and position it exactly facing a corner, maybe even with a top on it. would this be equal to a whole cornerhorn? with out the extra piece on the top it could be a regular base reflex cabinet with more versatility? thanks, Bill
creator: bmar
date: 2001-12-12T00:36:45-00:00

Alternate tuning for the JBL 2226
type: item
description: The 2226 works well in boxes from 2 - 5 cubic feet tuned to 35Hz - 40Hz. You can make an EBS alignment from a larger box tuned a little lower. All of those are valid alignments and work pretty well in different conditions. Corner loading has a specific requirement for best response. The alignment should create a conjugate of room response. What you want is a smooth rolloff, not a flat line with steep cutoff. The alignment used in the seven π provides the right curve for corner loading.
creator: Wayne Parham
date: 2001-12-12T02:03:42-00:00

Re: Alternate tuning for the JBL 2226
type: item
description: As I remember a max flat alignment is best outdoors or in large open spaces but when used indoors in corners room lift makes a max flat alignment turn into a peak instead of being flat.
creator: steve f
date: 2001-12-13T00:14:14-00:00