auger type spiral
In January I looked at the theory of a "spiral horn" as described here:
http://www3.ocn.ne.jp/~hanbei/eng-whyspiral.html
An "auger style spiral horn" can work, at least the mathematics suggest it can.
Hope this is to the point. Not trying to hijack or interfere.
In January I looked at the theory of a "spiral horn" as described here:
http://www3.ocn.ne.jp/~hanbei/eng-whyspiral.html
An "auger style spiral horn" can work, at least the mathematics suggest it can.
Hope this is to the point. Not trying to hijack or interfere.
Variac said:
The beauty of the spiral horn is that all 4 sub horns are exactly the same except for orientation.
An externally hosted image should be here but it was not working when we last tested it.
dave
I have come in on this late, but to address the original question.
When I was running a big pair of mass loaded voight (6 ft tall), I had my drivers mounted on a 14inch circular baffle with the driver mounted slightly off centre. I then had a small horn tweeter mounted to the side of the main Isophon driver, within the baffle.
The result of having the baffle was to fill out the sound significantly. Definately a mod to include as it was visually good and made a good contribution to the sound. Baffle step circuits are the other way to go, but they are wasteful of power and degrade the pure signal.
Shoog
When I was running a big pair of mass loaded voight (6 ft tall), I had my drivers mounted on a 14inch circular baffle with the driver mounted slightly off centre. I then had a small horn tweeter mounted to the side of the main Isophon driver, within the baffle.
The result of having the baffle was to fill out the sound significantly. Definately a mod to include as it was visually good and made a good contribution to the sound. Baffle step circuits are the other way to go, but they are wasteful of power and degrade the pure signal.
Shoog
Variac said:
In this case it allows the entire use of the circumferal edge of the box as a mouth... incrediably ekegant. Dividing into smaller sub horns also discourages the formation of longer standing wave/resonances -- this goes back to the multi-cel horn we see in vintage JBL/Altecs.
dave
Re: Re: Re: Re: Spiral Horn -PLD
What a cop out. This is like saying anyone that uses a three way doesn't enjoy the music.
So what single speaker design makes all three-way speaker designs a-musical?
I've built/heard quite a few single driver systems and have never heard one that has enough bandwith quality in the extremes (Jordan, Lowther, Fostex, Phy, ect..) to fullfill my obsession with quality reproduction. But I surely can't sit here and say the better examples didn't keep me from enjoying the music. I enjoy the music just fine with my KLH table radio - but it just doesn't do-it-all like my big rig. On the other hand if the single driver loudspeaker had a good seperate bass and treble system (like using the single driver as a mid) they became much more fullfilling. Lower distortion, better dynamics, much less cone breakup, better power handling, better dispersion, ect.... Don't like passive crossovers? Triamp.
planet10 said:
What a cop out. This is like saying anyone that uses a three way doesn't enjoy the music.
So what single speaker design makes all three-way speaker designs a-musical?
I've built/heard quite a few single driver systems and have never heard one that has enough bandwith quality in the extremes (Jordan, Lowther, Fostex, Phy, ect..) to fullfill my obsession with quality reproduction. But I surely can't sit here and say the better examples didn't keep me from enjoying the music. I enjoy the music just fine with my KLH table radio - but it just doesn't do-it-all like my big rig. On the other hand if the single driver loudspeaker had a good seperate bass and treble system (like using the single driver as a mid) they became much more fullfilling. Lower distortion, better dynamics, much less cone breakup, better power handling, better dispersion, ect.... Don't like passive crossovers? Triamp.
Its a very very well designed 3 way that sounds better than a full ranger with a supertweeter crossed in at well above 10K. In my small experience if you allow the crossover lower than this its very hard to get a satisfactory result. As for bass, if you can live with big speakers then most of the 10inch full rangers will not let you down in a "big" well designed cab.
Any crossover eats up wattage and so moves you out of the super detailed small wattage amplifier designs.
IMHO 3 ways suck big time.
Shoog
Any crossover eats up wattage and so moves you out of the super detailed small wattage amplifier designs.
IMHO 3 ways suck big time.
Shoog
Re: Re: Re: Re: Re: Spiral Horn -PLD
Not at all, just a response to the perceived aggressiveness of your post(s)
A typical 3-way, has XOs where they get in the way, passive XOs that "suck the life out of the music" and dome tweeters -- i've pretty much given up on them...
I've long been a proponent of what i call a "mostly-full range" speaker system. Take a full-range speaker that can be enjoyed in its own right, and extend it's performance with an active woofer and a super-tweeter. But if you can't enjoy the middle driver by itself, then the entire system will suffer.
dave
Magnetar said:
Not at all, just a response to the perceived aggressiveness of your post(s)
A typical 3-way, has XOs where they get in the way, passive XOs that "suck the life out of the music" and dome tweeters -- i've pretty much given up on them...
I've long been a proponent of what i call a "mostly-full range" speaker system. Take a full-range speaker that can be enjoyed in its own right, and extend it's performance with an active woofer and a super-tweeter. But if you can't enjoy the middle driver by itself, then the entire system will suffer.
dave
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