Log in
Register
Home
Forums
New posts
Search forums
What's new
Featured content
New posts
New profile posts
Latest activity
News
Members
Current visitors
New profile posts
Search profile posts
Features
Log in
Register
What's new
Search
Search titles only
By:
Search titles only
By:
New posts
Search forums
Menu
Install the app
Install
Reply to thread
Home
Forums
Low Earth Orbit
DIY Audio
Coaxial Wedge Collaboration
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Message
<blockquote data-quote="Bennett Prescott" data-source="post: 25257" data-attributes="member: 4"><p>Re: Coaxial Wedge Collaboration</p><p></p><p>Kimo,</p><p></p><p>I am not saying it cannot be done. All you need is a DSP that can do about a 2ms FIR. Then you need to make sure that everyone who is going to build this wedge also has a DSP that can do that. Preferably the same DSP, since the FIR is going to interact with the IIR filters in the DSP which will not be the same, unless whoever rolls the presets makes different presets for several different processors.</p><p></p><p>I am educated as a business manager and an economist, which I only bring up to illustrate that I am capable of sucking the fun out of any situation through the application of brute practicality. The generation and application of FIR processing is not the difficult part. The difficult part is knowing what can be corrected and what cannot. Simply applying FIR to a box is like equalizing to one measurement mic position, you can get it right in one place but may be making it very wrong everywhere else. What needs to be done is to design the box "around" FIR processing, with compromises that make it the most predictable throughout its entire coverage range. Then fixing a problem on axis also fixes it elsewhere. This may require a custom driver solution. Then one needs to know what to fix of the problems that remain, and how to generate an FIR that accomplishes that fix.</p><p></p><p>If you know how to not only build a DSP that can accomplish that goal, but also how to interpret measurements to generate complementary filtering, then please do! That would certainly be a Caddilac product, worth many times the actual build cost, and an incredible gift to the community.</p><p></p><p>If you do not believe that driver selection is paramount I don't really know what to say. A good sounding and well behaved driver makes the box. A good crossover simply attempts to optimize that driver and make it shine. One can build the most ingenious crossover in the world but if faced with arbitrary driver selection the box isn't going to sound good, may get real ugly off axis, and may not have the expected power handling.</p><p></p><p>Naturally the cost does not include labor. This is a DIY project. The whole point is that Joe Schmoe, by applying blood sweat and tears (not the band), can build a better wedge than he can otherwise afford.</p></blockquote><p></p>
[QUOTE="Bennett Prescott, post: 25257, member: 4"] Re: Coaxial Wedge Collaboration Kimo, I am not saying it cannot be done. All you need is a DSP that can do about a 2ms FIR. Then you need to make sure that everyone who is going to build this wedge also has a DSP that can do that. Preferably the same DSP, since the FIR is going to interact with the IIR filters in the DSP which will not be the same, unless whoever rolls the presets makes different presets for several different processors. I am educated as a business manager and an economist, which I only bring up to illustrate that I am capable of sucking the fun out of any situation through the application of brute practicality. The generation and application of FIR processing is not the difficult part. The difficult part is knowing what can be corrected and what cannot. Simply applying FIR to a box is like equalizing to one measurement mic position, you can get it right in one place but may be making it very wrong everywhere else. What needs to be done is to design the box "around" FIR processing, with compromises that make it the most predictable throughout its entire coverage range. Then fixing a problem on axis also fixes it elsewhere. This may require a custom driver solution. Then one needs to know what to fix of the problems that remain, and how to generate an FIR that accomplishes that fix. If you know how to not only build a DSP that can accomplish that goal, but also how to interpret measurements to generate complementary filtering, then please do! That would certainly be a Caddilac product, worth many times the actual build cost, and an incredible gift to the community. If you do not believe that driver selection is paramount I don't really know what to say. A good sounding and well behaved driver makes the box. A good crossover simply attempts to optimize that driver and make it shine. One can build the most ingenious crossover in the world but if faced with arbitrary driver selection the box isn't going to sound good, may get real ugly off axis, and may not have the expected power handling. Naturally the cost does not include labor. This is a DIY project. The whole point is that Joe Schmoe, by applying blood sweat and tears (not the band), can build a better wedge than he can otherwise afford. [/QUOTE]
Insert quotes…
Verification
Post reply
Home
Forums
Low Earth Orbit
DIY Audio
Coaxial Wedge Collaboration
Top
Bottom
Sign-up
or
log in
to join the discussion today!
