I picked up a pair of apollo c51 s7 speakers last week. They have nice cabinets, so the cabinets stay. I will replace the surrounds on the LE15A's myself. I presume some of the crossover components are worn out, or at least slightly out of compliance. I have a pair of 077 uhf tweeters like for the L300, and I see that there is a revamped/reworked crossover design by Nelson Pass for the L300. I think the 077 tweeters would fit in best in separate boxes on top of the apollo enclosures. This project is just an idea, I do have the unused 077 tweeters, so that makes it a good idea.
basics
Would the apollo c51 benefit from building a stand for it to bring the horns up to ear level? ...or is there some floor bass resonance factor that makes the original design superior? I do live in an apartment and have always kept speakers up on milk crates to avoid projecting sound through the floor. I saw a thread here where concrete flat ?pavers they called them, were used. Suggestions as to height and reducing sound going downstairs, please.
the crossover
Does the Nelson Pass crossover look like a good design? Does the fact that my woofers are different, or that my enclosure volume is different, contraindicate the use of the Nelson Pass crossover? The L300 uses 136A woofers and I have LE15A's.
reference: http://www.firstwatt.com/pdf/art_l300.pdf
woofers
The LE15A's that I have are part of the most expensive apollo c51 package, the s7 package, ...yet I am hearing there are some much preferred woofers. I'll do some reading on "favorite/preferred woofers", but I think the LE15A's will be fine.
surrounds
Are the surrounds from Rick Cobb better than those from Orange County Speaker Repair, now Speaker Repair Pros?
So that's where I'm at on this project. Will soon order surrounds, and maybe build a wooden stand, maybe with double sides and sand in between, to firm it up. PS I love the transverse/sideways projection of sound by these speakers
sidney in Chandler AZ