GoodSoundClub - Romy the Cat's Audio Site

In the Forum: Horn-Loaded Speakers
In the Thread: Bye-Bye, Fane

Post Subject: Output AmplitudePosted by Jorge on: 4/22/2011

That is the thing exactly, my upperbass solution has the same output amplitude as the compression drivers I am using, IMHO resistrors are the devil in xovers, they kill all sound.  Now the difference between 109 db and 110 db can be overcome with certain tricks, like small diameter wire or copper vs silver cabling. etc. But not Ideal.

Using the Fane 8M is interesting mainly if I get a better sound, Gravitas and size!

Most drivers I tried for Upperbass start droping at 650 hz but have a long tail, the 10" driver goes a little bit higher maybe 1 khz and then drops like a brick, I think this is good for better integration with the mid range compression driver.  I see a lot fo people trying to get the upperbass horn up to 5-6 khz, I dont understand why, I love what compression drivers bring to the table...

I am not using the S2 driver, I have been going the long way testing a bunch of different compression drivers. Right now I am testing the TAD 2001, I can say leaving it full range going all the way up, it develops a certain tone in highs that I dont think I could live with in the long run, sort of sugary whizzer like sound, but taking away the tweeter does bring a nice soundstage and a more intimate sound, for women voices, they are hipnotic, with very deep soundstage and a proximity very hard to find. Now crosing them with a low pass at 10 khz-15 khz they get better with big orchestral music with a more natural tone, but it is not a very resolving driver IMHO. My Favorite at the moment is the Beyma 755nd, they have 2.2 tesla on the coil and titanium diaphragm with a plastic suspension. I have tried and lived for a while with a bunch of different compresison drivers, some are; Altec 806, Beyma cp385nd,(not reallly worth mentioning); 18sound 2060A which sports an aluminum diaphragm with plastic suspension and 1.9 tesla magnet, it is very good and musical, but not as resoving as it big brother 18sound 1480nd, with a titanium diaphragm and plastic suspension and 2.2 tesla. this one is very very close to the Beyma 755, it was hard for me to choose one over the other, but I think the tone of the beyma is a bit better. I also tried the Radian 950bp with aluminum diaphram and plastic suspension,  that one was a bit harder on the ears and needed a biger horn and thin wire, I guess the 4" diaphragm made a difference. Next on the list I guess will be GOTO 350, I am also hunting down a pair of S2 drivers...

I am also thinking of making a pair of 1.2 meter diameter round tactrix horns trhat should go down to 90 hz, floor coupled maybe real 80 hz. Cut them at 300 hz and use the 2490 from there uo to 1 khz, But this may take a while...

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