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I have recently been reading up on using Linkwitz Transforms to flatten sealed subs. I'm wondering how well a BFD can be used in this way. I know they don't have any filters below 20hz, but can you use the Fine and Bandwidth settings to reach below 20? Also is there anythign I can use to model...

I built my own 142l sub and have a pretty nice room curve dialed in. Ever since adding the BFD I noticed my sub tends to bottom out more than before. I assume this is because I tamed a +12db hump from 50-60hz, so when calibrated with my mains the sub is producing more sub 50hz material than...

First of all here are some graphs of my corrections before and after. The sub is a 142.5l vented box tuned to 18hz with a 12" Dayton Titanic MK3 and 250 PE plate amp. Before I added the BFD I had my reciever attentuating the LFE 10db plus taking another 6db off the top of that for a total...

I built a 142.5l Adire style sub that was orignally designed for the famous Shiva. After looking over the gain graph in WinISD it looked like "upgrading" to the more expensive Dayton Titanic MK3 would give me more SPL and a flatter FQ. I didn't notice until it was too late that the Dayton is...

I finished my sub and covered it with the PE black vinyl. It looks fine, but I'm not sure how happy I am with it after seeing the wood finishes SVS puts on their subs. Adding real wood veneer seems pretty straight forward, except when you get to rounded edges that go two directions. Right now...

I have a +20db hump that peaks at 45hz. I'd post a graph but apparently I'm not allowed to yet. 18hz : 75db 32hz : 85db 45hz : 95db 68hz : 85db 80hz : 75db The graph is more or less a symmetrical hump with a few small peaks at the begining and end. Is a BFD my only option besides...

I just finished my first DIY sub after several months of lurking here for tips and hints. I used the adire 142.5l box plans and a 12" Dayton Titanic MK3 for the driver. The box is tuned to 18.1hz as specified by the plans, and powered by the PE 250W remote amp. After finishing it up I...