Hi Louis,
I am about to embark on some testing regarding the various configurations for dual-driver RS-5 based speakers. I have a pair of original wide-baffle Super 3's with RS-5 drivers I purchased from you (Thanks!) as well as a spare pair I purchased from another AC member. I had also purchased a pair of enclosures to repurpose the Fostex FE127e drivers I removed from the Super 3's. The enclosures are built to the Fostex design, tubed to 60hz and area almost identical in size to the Super 3T's you sell. To further complicate matters, I have a stereo pair of DIY sealed 8" subs (an "improved" version of the bucket subs).
My current resources:
1. Wide baffle Super 3's.
2. Narrow baffle bookshelf speakers similar to Super 3T's.
3. 8" sealed Peerless SLS subwoofers driven by 250 watts each.
4. Single ended tube amp (4 wpc), Tripath amp (6 wpc) and NAD D3020 (30 wpc).
5. Various stands, supports and the usual array of accessories.
This is a current list of potential configurations I would like to try:
1. Single Super 3 wide baffle, with and without subwoofers.
2. Single smaller enclosure, with and without subwoofers.
3. Omni configuration, Wide baffle forward facing, smaller enclosure facing upward on top of main speaker.
4. Omni configuration, Wide baffle forward facing, smaller enclosure facing upward on floor behind main speaker (LCS configuration).
5. Omni configuration, smaller enclosure forward facing, wide baffle on floor behind main speaker.
6. 1.5 configuration, both speakers facing forward (smaller on top of larger).
7. 1.5 configuration, larger speaker facing sideways, smaller speaker facing forward (smaller on top of larger).
8. Full range configuration, larger speaker facing sideways, smaller speaker facing forward (smaller on top of larger).
For 7. and 8. I would experiment with lower driver facing outward vs. inward. Due to my room limitations, I will not be experimenting with bipole/dipole configurations.
I plan on using an air core inductor to cross over the 1.5 way at 500hz as you prefer. I'm assuming a nominal 2.5 mH inductor will do this.
I'd love to hear your thoughts on this.
R