I'm new to the Lansing Heritage site. I though I would share my latest DIY project. It's a front horn for my Summer Rain project.
It uses the JBL 2118J and the horn is my design using 3D CAD. The high frequency is coaxial inside the horn. The compression driver sits directly in front of the JBL 8". compression driver is only 2" outside diameter, so it acts as a phase plug for the 8".
I had steel templates CNC plasma cut to use as templates to cut out my pieces. I did this because I'm not very good with layout. History shows that I will certainly screw up a dimension and scrap my expensive baltic birch. This saves time as well.
This is as far as I've gotten as of last night. I will continue to post my progress.
Comments are welcome. My JBL 2118J is a 16 ohm version. The LF and HF are 8 ohm. I'm thinking this will make some nasty impedance swings for the system when I'm done with the passive crossover. I'm thinking I should have the 2118J reconed to the 2118H 8 ohm version. Will this work or are the motors different?