Horn/TL combo

[Decker]

If I'm remembering the article correctly, the Exemplar had four big vents on the back.

[buzzforb]

Didn't see the smaller link at the bottom. Thanks.

[JRKO]

Now that is one big black speaker I could live with. Its like having a SR-71 Blackbird parked in the corner looking all moody

[GM]

Originally Posted by buzzforb

I could be remembering wrong, but did GM suggest that horn loading of the woofer needs a big room. I am going to be sitting 10-12ft away.

For best overall performance, yes. At your distance you're still in the horn's near-field. Dual 15" and HF WG do better overall inside ~25-45 ft depending on horn flare/cut-off.

The Exemplar horns are more WG, so while a large room would still be ideal, they should sound more 'open' than an A7, etc..

Like I implied earlier, WGs are what's needed in most HIFI/HT apps, but the trade-off is they will tend to be large/deep and more expensive if a low XO point is used.

GM

[buzzforb]

Supposedly Tuesday is arrival time of 414's. I have 75ltr boxes that are currently sealed that I will port in an attempt to get an idea of sound in my room. I will measure all 4 and post results. Hopefully they are all close. Might have JBL LE15A back by then.

[buzzforb]

Originally Posted by GM

For best overall performance, yes. At your distance you're still in the horn's near-field. Dual 15" and HF WG do better overall inside ~25-45 ft depending on horn flare/cut-off.

The Exemplar horns are more WG, so while a large room would still be ideal, they should sound more 'open' than an A7, etc..

Like I implied earlier, WGs are what's needed in most HIFI/HT apps, but the trade-off is they will tend to be large/deep and more expensive if a low XO point is used.

GM

Room is set up do that couch can be pushed back another 6-8ft, but if doing that, the room is starting to look like a barrel being 14' wide by 22'. Boxes seem to fit my room better than horn loaded woofers. Based soley on ignorance and others opinions combined with reading on the net

[GM]

Again, assuming the speakers are near/at the sound wall, seating [head location] is at thirds or 5ths, so 13.2, 14.66, 17.6 ft. Looks have nothing to do with it.

GM

[buzzforb]

I wasn't saying looks had something to do with it, but speculating that in a long narrow room, continuing to back up further might not help because room reflections would come into play even more. The truth is, I could back up 25 feet from the speakers, but how many times would the sound waves bounce of the side walls, ceilings, and floors before getting to me.

[Zen Mod]

whatever you do , you'll end with some big honker in big tall TL box , with horn on top

one 15" per box will make your life easier

if you were satisfied with your present liliputan spks , that will be certainly more than enough

anything bigger than that will overload the room , meaning exactly what you wrote - that you'll need to back up more , to ensure blending of all drivers

[buzzforb]

I was thinking that I could try dual 414's in individual boxes similar to what you calculated, conected side to side, ( maybe single large version). I could try the single 15 route with the JBL. It is not an altec but has very similar parameters, big VAS, low fs, low Qt.