I call it the Step Up project because this will be my second speaker design I have ever created. My first speakers were some rather small and basic bookshelf speakers costing a little over 100$ for a pair. This design will be the next step up with a ~400$ budget.
Inspiration
I have researched a lot of projects here at DIYAudio, on Parts Express Showcase and on DIY AUDIO PROJECTS but none of them really stuck to me but plenty have inspired me. Specifically The Copper Project(My Primary Inspiration), Tritrix, and my long gone Dynaudio Audience 122s. I hope to design something very similar to the Audience 122s but with a 6" driver for extra bass while keeping the slim profile and veneer finish.
Drivers
Following the MTM design, at my 400$ budget I set apart 50$ for a tweeter, and 50$ for the woofers. I have always wanted to build speakers using Hi-Vi drivers because they are simply beautiful. This left me with two options, either the F6 or the slightly more expensive D6.8. The Hi-Vi website recommends the D6.8 for smaller enclosures but I decide to use the D6.8 over the F6 for it's smoother and higher response without breakup. On the tweeter side, it was either the Dayton RS28F or the Vifa XT25BG60. I decided to go with the Vifa because the Vifa has a smoother response on it's <1K drop, a surprisingly different design, and I don't like when companies like Dayton Audio smooth their response graphs to make the drivers seem better.
Enclosure
Inspired by the Audience 122s, I hope to have a skinny tower with height being the least important and the depth being mildly important. I decided on an enclosure around 44" tall x 7.5" wide(Maybe Skinnier ?) x 10" Deep made of 3/4 Oak MDF. I can use some input on the port and it's length, because I'm drawing a blank. Not sure whether the drivers are one bigger driver or the same size. I am guessing a port around 2-2.5" at 7" deep or so for a tuning frequency around 30 or 40hz. It would also be a great help if someone could help explain the divider used in the copper project and if it would be any use in my ported tower MTM design.
Crossover Design
The simpler the crossover the better. With that, I hope to have a 2nd Order crossover. Being an MTM I know that the 2 8ohm woofers will act like 1 6ohm woofer. Me being very picky in deciding on two drivers that match really well, the XT25 and the D6.8 both seem to have smooth response around 2kHz to 2.8kHz. To ease the woofer, I hope 2200hz would be a good crossing point for both the woofer and most importantly the tweeter.. Using the Crossover designer at DIY Audio & Video, this is how my crossover will look using a Linkwitz-Riley crossover topology.
and the tweeter needs an L-Pad of around 6db
Now I need your input on my design and though process before I make a 400$ mistake pairing this or that driver wrong, designing the wrong port size, creating a dreadful crossover, and etc.... Any and all input will be appreciated.
Inspiration
I have researched a lot of projects here at DIYAudio, on Parts Express Showcase and on DIY AUDIO PROJECTS but none of them really stuck to me but plenty have inspired me. Specifically The Copper Project(My Primary Inspiration), Tritrix, and my long gone Dynaudio Audience 122s. I hope to design something very similar to the Audience 122s but with a 6" driver for extra bass while keeping the slim profile and veneer finish.
Drivers
Following the MTM design, at my 400$ budget I set apart 50$ for a tweeter, and 50$ for the woofers. I have always wanted to build speakers using Hi-Vi drivers because they are simply beautiful. This left me with two options, either the F6 or the slightly more expensive D6.8. The Hi-Vi website recommends the D6.8 for smaller enclosures but I decide to use the D6.8 over the F6 for it's smoother and higher response without breakup. On the tweeter side, it was either the Dayton RS28F or the Vifa XT25BG60. I decided to go with the Vifa because the Vifa has a smoother response on it's <1K drop, a surprisingly different design, and I don't like when companies like Dayton Audio smooth their response graphs to make the drivers seem better.
Enclosure
Inspired by the Audience 122s, I hope to have a skinny tower with height being the least important and the depth being mildly important. I decided on an enclosure around 44" tall x 7.5" wide(Maybe Skinnier ?) x 10" Deep made of 3/4 Oak MDF. I can use some input on the port and it's length, because I'm drawing a blank. Not sure whether the drivers are one bigger driver or the same size. I am guessing a port around 2-2.5" at 7" deep or so for a tuning frequency around 30 or 40hz. It would also be a great help if someone could help explain the divider used in the copper project and if it would be any use in my ported tower MTM design.
Crossover Design
The simpler the crossover the better. With that, I hope to have a 2nd Order crossover. Being an MTM I know that the 2 8ohm woofers will act like 1 6ohm woofer. Me being very picky in deciding on two drivers that match really well, the XT25 and the D6.8 both seem to have smooth response around 2kHz to 2.8kHz. To ease the woofer, I hope 2200hz would be a good crossing point for both the woofer and most importantly the tweeter.. Using the Crossover designer at DIY Audio & Video, this is how my crossover will look using a Linkwitz-Riley crossover topology.
and the tweeter needs an L-Pad of around 6db
Now I need your input on my design and though process before I make a 400$ mistake pairing this or that driver wrong, designing the wrong port size, creating a dreadful crossover, and etc.... Any and all input will be appreciated.