crossover help for my boombox

[gio89]

I have built this boombox

It sounds good but I would like to make sure it sounds the best.
I am using a lepai amp and hivi b3n speakers, but I would like to add a crossover and these dayton audio tweeters. If any one knows a crossover design to add tweeters to these speakers it would help me out greatly.
Right now they are 8 ohm speakers but ideally I am looking for 4 ohms after the added tweeter if its possible.
Thank you for anyone that can help.

[Inductor]

gio,
You can use the standard approach...
Help understanding speaker design

[Inductor]

As a last resource/reference or just a starting point look at the Carmina's (w/ Dayton ND20FA-6).
Boxsim Projektdatenbank Carmina

[gio89]

These are almost the same speakers and tweeters, can i use this crossover design?

[Inductor]

Yes, the Overight Sensations are a very similar pair.
With time you will need small crossover mods.

[Inductor]

As a reference you will need to mod the sensitivity of the crossover with the new drivers.
L-pad is playing with original drivers 8R/10R (series/parallel)
for Dayton ND20FA-6 3/4" (~90dB) and you're moving to Dayton ND16FA-6 5/8" tweeter (~89dB). You need to go up 1-2dBs here.
The same with the Swan Hivi BN3 vs. HiVi B4N 4" (82dB vs. 85dB). You need to drop ~3 db's here to match your smaller driver. All in all you can start to change your crossover l-pad for less 1 or 2 dB.
Overview M3N Full-Frequency_HiVi, Inc.
Large Bande - HiVi B4N Haut-Parleur Large-Bande Aluminium-Magnésium 4"
(Note) you might be happy with the result before changing, you will probably will notice the tweeter louder to start with, there are more important details like a good integration of the two drivers at crossover frequency.

[gio89]

You provide great information.
Thank you for all the help.

[gio89]

Will this crossover give me a good integration of the two drivers at crossover frequency.
What did you mean by that?

[balerit]

You have to measure the impedance at the desired crossover frequency.

[gio89]

This will be my first crossover build, I was hoping to follow the overnight sensation crossover with a little modification thanks to the input of Inductor above.
How do i make sure the crossover frequency is perfect?