This will be my first foray into fullrangers for my PC desktop at home where i do most of my listening....so why not make it the best it can be right? Some background......
The desktop is 30" deep to the wall so the avg listening distance will be about 40" to the seated ear. They can be placed as far as 11ft apart on the desk from wall to wall or as close as 30". Ideally to conserve some space, dimensions should be no deeper than 8" or taller than 14", which would just about put a top offset driver on the horizontal axis with my seated ear.
I've been researching quite a few drivers and the TB W5-1611SA seems to be the perfect fit for enclosure size vs bass response. The planned tune is 55hz to be crossed to a DIY 10" Peerless sub that's under the desk. I'm figuring on a stereo tube amp at some point, but using a classA integrated currently fed with Flac files from the PC through a Maudio card/DAC.
Now coming from the multi way side of things, i've got some concerns to consider when designing the enclosures and filters if any are needed. First off, i'm 43 and can't hear a lick over 15khz so that should filter out some subjective opinions on the TB's top end. It's been my understanding that larger format fullrange drivers HF response drops like a tank off axis, as would be the case with the layout i've outlined above and assuming some seperation roughly 20degrees off axis listening. My thought would be an angled baffle of 15 degrees which would still leave the speakers a bit off axis to avoid beaming. Am i being overly cautious? I don't want to have to toe them in as mentioned above, i'm trying to maintain some desktop space.
Now i've got plenty of room for a front port and propose a simple bottom slot calculated with Unibox. As far as BSC, i'll be looking at three boundries, the left and right of the enclosure to the wall and the desktop so how much BSC would this placement require? I could design in a bit of bass hump of 1-2db between 100-300hz using tune freq vs enclosure volume if needed. Thoughts?
Finally, edge diffraction and the dreaded midbass wiggle with on-wall placement. The inside edge of the baffle could be extended so that it would meet the wall at a 15-20 degree angle while the outer edge could be curved using bendyply for a full 180 degree radius and then taper again to the wall. Wide baffle...less diffraction....less BSC required..correct? If the desktop surface could be a problem, i can certainly offset the driver as much as needed...limited to 12" from the center of the cone of course.
So have i covered all of the points needed to design a nice FR desktop speaker that fits my space and needs. Any points or suggestions would be welcome. I've got excellent tools in my arsenal as well as above average carpentry skills so enclosure complexity doesn't factor in.......just as long as it sounds good.
Here's my Unibox model which assumes .5cuft (14L) and a 55hz tune factoring in power vs excursion.
Thanx for those that chose to read through a pretty long post.
The desktop is 30" deep to the wall so the avg listening distance will be about 40" to the seated ear. They can be placed as far as 11ft apart on the desk from wall to wall or as close as 30". Ideally to conserve some space, dimensions should be no deeper than 8" or taller than 14", which would just about put a top offset driver on the horizontal axis with my seated ear.
I've been researching quite a few drivers and the TB W5-1611SA seems to be the perfect fit for enclosure size vs bass response. The planned tune is 55hz to be crossed to a DIY 10" Peerless sub that's under the desk. I'm figuring on a stereo tube amp at some point, but using a classA integrated currently fed with Flac files from the PC through a Maudio card/DAC.
Now coming from the multi way side of things, i've got some concerns to consider when designing the enclosures and filters if any are needed. First off, i'm 43 and can't hear a lick over 15khz so that should filter out some subjective opinions on the TB's top end. It's been my understanding that larger format fullrange drivers HF response drops like a tank off axis, as would be the case with the layout i've outlined above and assuming some seperation roughly 20degrees off axis listening. My thought would be an angled baffle of 15 degrees which would still leave the speakers a bit off axis to avoid beaming. Am i being overly cautious? I don't want to have to toe them in as mentioned above, i'm trying to maintain some desktop space.
Now i've got plenty of room for a front port and propose a simple bottom slot calculated with Unibox. As far as BSC, i'll be looking at three boundries, the left and right of the enclosure to the wall and the desktop so how much BSC would this placement require? I could design in a bit of bass hump of 1-2db between 100-300hz using tune freq vs enclosure volume if needed. Thoughts?
Finally, edge diffraction and the dreaded midbass wiggle with on-wall placement. The inside edge of the baffle could be extended so that it would meet the wall at a 15-20 degree angle while the outer edge could be curved using bendyply for a full 180 degree radius and then taper again to the wall. Wide baffle...less diffraction....less BSC required..correct? If the desktop surface could be a problem, i can certainly offset the driver as much as needed...limited to 12" from the center of the cone of course.
So have i covered all of the points needed to design a nice FR desktop speaker that fits my space and needs. Any points or suggestions would be welcome. I've got excellent tools in my arsenal as well as above average carpentry skills so enclosure complexity doesn't factor in.......just as long as it sounds good.
Here's my Unibox model which assumes .5cuft (14L) and a 55hz tune factoring in power vs excursion.
Thanx for those that chose to read through a pretty long post.
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