Dayton 4 DIY Speaker Design

 I made a post here about my Dayton 4 speaker about 4 years ago for a class I was taking. I made this with the idea of the reader having no prior knowledge of speakers. As would be the case for my class mates. I am trying to add more data here that will help people actual trying to build a set.

The design goal was to build a speaker as low cost as possible with a crossover count less than 5 components. The cross over requirement was for a competition at the InDIYana event that year. I did not win the competition. But the speaker surprised many attendees. With less than $30 per speaker and only 4 component crossover it was a win for me.

Specs:

Drivers:            Dayton TCP115-4 and the Dayton ND16 Pressfit

Enclosure:         8” H, 6”W, and 8.5” D, 1/2" plywood.  I added a single brace tying the sides together and zip tied the cross over to it.

Crossover:        Series hybrid 2nd/1st order with tweeter "L-pad" @ ~3800hz

Measured Frequency Response: (Blue is showing inverted tweeter.)

Measured 0, 15 and 30 degrees off axis:

Distortion:

Plus 5db:

Plus 10db:

Crossover:

Please Let me know what I am missing.