Hello everyone! This is my first serious speaker design, so any constructive criticism or advice would be greatly appreciated for what I have so far. I am wondering if I've overlooked anything, whether my deadening method would be effective, or if my graphs look good, so any and all thoughts regarding those points or other things feel free to share! I do apologize for the poor image quality as SolidWorks stopped displaying contour lines properly for some reason. I am an engineering student so the more specific the feedback if possible the better! Thank you all for your time! This is also my first reddit post.
^(Mods if there are any issues, feel free to take this down/dm me!)
The following graphs/models are what I have attached to my post for clarity sake and what I am seeking feedback from:
- Crossover Response
- 3 screenshots of my model
- Enclosure data & response
For further context:
The idea for this speaker was to incorporate as much engineering as possible while using inexpensive drivers. One of my primary goals was to achieve a pseudo point-source effect. To accomplish this, I angled the tweeter downward so that it aligns with the woofer at a listening distance of about 4.5 ft. I also did my best to achieve proper phase alignment while keeping the crossover frequency relatively low to improve off-axis response.
I aimed for a Qtc of 0.707, but it ended up slightly lower than intended. I don’t expect this to be a major issue, since the speaker is designed to be used with a subwoofer. I do wish it had a bit more bass extension, but I’m hoping the improved transient response will be enough to justify the tradeoff, especially given that it will be paired with a sub.
The design uses the Dayton Audio TCP115-8 woofer and the Dayton Audio ND16FA-6 tweeter. The enclosure is fully 3D printed in two shells, and I plan to use the DIY Perks method of filling it with PVA and plaster of Paris to reduce cabinet resonance. The tweeter is mounted on an open baffle. The design was modeled in VirtuixCAD, although the frequency response graph does not account for box roll-off, it does account for the baffles.