Orange A7's

[GM]

Thanks GM for the reply. Does that mean I would have to move the horn forward and if I did would that create a time alignment problem? Truncated, had to look that one up

You're welcome! Why would you move the horn? As I noted you will need to make a gasket to blend the horn to the cutout. High density open cell foam is preferred. Don't know if it's still available, but I use to buy trail pad at The Foam Store to make horn extensions to quell mouth reflections back to the throat and off nearby boundaries. Basically, a much larger, deeper variant of the M19's horn foam inset, though I didn't go out of my way to make such nice, tapered cuts.

GM

[valhallax]

after i reduced the ports on my a-5's to 75 sq inches, and loaded them with 515 e's, the bass hit so hard , they would drive me outta my listening seat. tho i only found this phenomenom with the 'e' variant of the 515. by far more bass than my old 416's, 515g's or 3156's i tried in those cabs. the 416's were 8c's. those cabs are stuffed with 421's now and at my old father in laws..ex father in laws. look up 'a5's rock the house' here in the search...an they still do, tho now predominatably with the computer as a pre amp. i cant stress enough the importance of ample clean power, as most of the home stereos rated at a hundred watts per channel appear to me to have closer to 15 watts clean power. thus cuasing 3 or 4 woofer replacements do to over indulgence in barley pop and the simple fact that the common man associates loudness with distortion. ive proven this fact with my system playing at 130 db's and folks asking me to turn it up. no distortion..its not loud

[badtoby]

Could the horn be placed atop the baffle and forget about the cutout?

[GM]

Of course you could, just like Altec did, then you would either get rid of the top baffles same as they did or do the gasket-ed cutout due to how 'two tone'/'disconnected' they sound unless your listening distance is a 100 ft or so.

GM

[badtoby]

Thanks again GM. You know the thought did occur to me (about the two tone sound)but then a lot of things occur to me that won't hold water so to speak so again thanks for saving me the time and trouble. Your knowledge is appreciated

[GM]

You're welcome! You have to wonder what possessed them to do that other than to save having the speaker spaced up off the floor. I guess they were just trying to get as much usable LF BW out of them as they could and lost sight of the primary goal of realistic sounding vocals to match the video.

Not that some modern 'tall boy' stacks are much better in this respect, at least to my ears and one reason why I quit going to the movies over a decade ago.

GM