Hi!
I have made my first loudspeaker. See <A HREF="http://home.online.no/~yhaugen/loudspeaker/ht.jpg">here</A>. It is a 30 liter sealed box, and it is loosly based on the proac 2.5 clone. It uses the same mid/bass (ss 8535) but a different tweeter (ss 9500). The crossover is the same as the one in the clone. I was told it could work well as a starting point, but it propably would not work optimaly.
This speaker sounds not too great. I guess the tweeter is a few db too high, and it is a little to loud somewhere in high pianos, but that is a minor issues I think. It is not very open in the midrange. I hoped it would be better. But very fast and tight bass. I like it alot.
Anyway, I have a little problem. Right now I dont have any stands for it. So I put it on the floor and tilted it uppwards, so it points right at my listeningposition. While I was sitting at the floor I noticed that the tweeter sound alot better there. (see <A HREF="http://home.online.no/~yhaugen/loudspeaker/mss.gif">thsis</A> drawing) Before hihats and cybals and such sounded more like "stsss" but when Im at the floor it more like "tssss". Its way more accurate and faster, and I want it to be like this all the time. 🙂 And the upper mid sounded more open as well.
What might cause this? Can it be something with the phase? Or is it more likely caused by roomreflections?
Im planing to make a new filter though. I have heard that this tweeter sounds very good at "low" frequencies. So I want to cut it at 2000 hz (instead of 3000) and use a 3. order filter.... Can that "open up" thefuzzy upper mid?
With regards
Eigil
I have made my first loudspeaker. See <A HREF="http://home.online.no/~yhaugen/loudspeaker/ht.jpg">here</A>. It is a 30 liter sealed box, and it is loosly based on the proac 2.5 clone. It uses the same mid/bass (ss 8535) but a different tweeter (ss 9500). The crossover is the same as the one in the clone. I was told it could work well as a starting point, but it propably would not work optimaly.
This speaker sounds not too great. I guess the tweeter is a few db too high, and it is a little to loud somewhere in high pianos, but that is a minor issues I think. It is not very open in the midrange. I hoped it would be better. But very fast and tight bass. I like it alot.
Anyway, I have a little problem. Right now I dont have any stands for it. So I put it on the floor and tilted it uppwards, so it points right at my listeningposition. While I was sitting at the floor I noticed that the tweeter sound alot better there. (see <A HREF="http://home.online.no/~yhaugen/loudspeaker/mss.gif">thsis</A> drawing) Before hihats and cybals and such sounded more like "stsss" but when Im at the floor it more like "tssss". Its way more accurate and faster, and I want it to be like this all the time. 🙂 And the upper mid sounded more open as well.
What might cause this? Can it be something with the phase? Or is it more likely caused by roomreflections?
Im planing to make a new filter though. I have heard that this tweeter sounds very good at "low" frequencies. So I want to cut it at 2000 hz (instead of 3000) and use a 3. order filter.... Can that "open up" thefuzzy upper mid?
With regards
Eigil
aslong as you dont blow the tweeter up 😛
perhaps it may sound better :-D
avoid the tweeter resonance.
perhaps it may sound better :-D
avoid the tweeter resonance.
1. i've used teh 9500 at 2.2k at 12db and not blown it (my woofer was the 8546)
2. the lower position is closer the to woofer and that might ensure that the voice coils are better aligned
3. I used a L pad (4 ohms series and 10 ohms parallel) for my 9500.
4. make one change at a time so you can keep track.
2. the lower position is closer the to woofer and that might ensure that the voice coils are better aligned
3. I used a L pad (4 ohms series and 10 ohms parallel) for my 9500.
4. make one change at a time so you can keep track.
Indeed, speakers generally do sound better (I think) on axis. "As frequency increases all speakers become more directive and the hight frequencies begin to "beam" like that light from an automobile headlight." -Vance Dickason
That is most likely what you are hearing, so getting or building stands sounds like a great idea. That driver shouldn't be unusably directive at 3000 htz, and I don't think changing the xover frequency would fix your problems. In fact that driver looks like it would have beautiful mids...so I can see why you are concerned. However, if you really want to, I would be comfortable crossing that tweeter at 2k Hz. I've crossed a tweeter with an even higher Fs at 1.8 and haven't had a problem yet. But before you do that, I would try dropping the tweeter 2 or 3 db, and see what it sounds like. There are also a few posts about tweeter attenuation, if you decide that is a problem worth attenuating.
-andy
That is most likely what you are hearing, so getting or building stands sounds like a great idea. That driver shouldn't be unusably directive at 3000 htz, and I don't think changing the xover frequency would fix your problems. In fact that driver looks like it would have beautiful mids...so I can see why you are concerned. However, if you really want to, I would be comfortable crossing that tweeter at 2k Hz. I've crossed a tweeter with an even higher Fs at 1.8 and haven't had a problem yet. But before you do that, I would try dropping the tweeter 2 or 3 db, and see what it sounds like. There are also a few posts about tweeter attenuation, if you decide that is a problem worth attenuating.
-andy
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