I am getting hold of 16 pieces of below driver,
Tymphany TYPY03W06O0111 3-1/2" Full Range Driver
its more or less similar to vifa tgf9d model, only that this is oem version. It has nice high qts and acceptable xmax. right now I have ordered 16 (each costs around USD8!). I could order more too.
now question is 'how can i use them in diy speaker build?'
I can think of line array. all drivers just placed in a vertical array (say 8 per side). other idea is to put 6 of them in to sealed box and 2 in OB. i guess 6 in box will have good low end extension down to say 150hz or so(with some EQing) and the 2 drivers in OB arrangement can add to soundstage. I am looking for more ideas how I can use them. Please suggest
Tymphany TYPY03W06O0111 3-1/2" Full Range Driver
its more or less similar to vifa tgf9d model, only that this is oem version. It has nice high qts and acceptable xmax. right now I have ordered 16 (each costs around USD8!). I could order more too.
now question is 'how can i use them in diy speaker build?'
I can think of line array. all drivers just placed in a vertical array (say 8 per side). other idea is to put 6 of them in to sealed box and 2 in OB. i guess 6 in box will have good low end extension down to say 150hz or so(with some EQing) and the 2 drivers in OB arrangement can add to soundstage. I am looking for more ideas how I can use them. Please suggest
An array is a very nice idea. You need to be aware of some problems that can occur.
Only putting the drivers in an array is not always the best solution due to the used frequency-range. Probably this patent will help you for your design: Patent US20060159288 - Bessel dipole loudspeaker - Google Patents
A really nice done thread aout a huge array is the following: http://www.diyaudio.com/forums/full...o-towers-25-driver-full-range-line-array.html
Probably the designer wesayso will help you with the first steps...
Only putting the drivers in an array is not always the best solution due to the used frequency-range. Probably this patent will help you for your design: Patent US20060159288 - Bessel dipole loudspeaker - Google Patents
A really nice done thread aout a huge array is the following: http://www.diyaudio.com/forums/full...o-towers-25-driver-full-range-line-array.html
Probably the designer wesayso will help you with the first steps...
It's easier to keep impedance the same when using 4,9,16 or 25 drivers per array.
Having tried an array with 9 drivers, I believe more is better when it comes to arrays. 16 is the minimum, depending on your room, and they shine at 25.
Having tried an array with 9 drivers, I believe more is better when it comes to arrays. 16 is the minimum, depending on your room, and they shine at 25.
Array. You could look at some form of omnidirectional design if you can cope with that type of speaker -they're not to all tastes (certainly not mine). As a driver, like all high Q 3in widebanders, it's somewhat limited in what you can realistically do with it in alignment terms. Vented boxes are problematic -you can force it low, but it won't particularly thank you for the experience, although using multiples reduces some of the issues, and at lower SPLs these are reduced anyway.
FWIW, I'd tend to concur with some of the above re numbers of drivers -I'd probably suggest a minimum of 12 per channel in an array to ensure a vaguely reasonable length, then power-taper it. Equal feed for relatively short arrays doesn't work all that well; it's arbitrary but I'd suggest a 6ft array is the minimum length for equal feed & that depends on listening distance also. Bessel arrays are interesting, but in their pure form tend to need quite considerable listening distances. I doubt I'd bother with semi-dipole; controlling the radiation pattern is largely what arrays are about, so hybrids usually end up sounding a trifle inconsistent. I'd probably run them all as leaky sealed / resistively vented boxes to drop box Q relative to size & better control the impedance, which generally makes life easier.
FWIW, I'd tend to concur with some of the above re numbers of drivers -I'd probably suggest a minimum of 12 per channel in an array to ensure a vaguely reasonable length, then power-taper it. Equal feed for relatively short arrays doesn't work all that well; it's arbitrary but I'd suggest a 6ft array is the minimum length for equal feed & that depends on listening distance also. Bessel arrays are interesting, but in their pure form tend to need quite considerable listening distances. I doubt I'd bother with semi-dipole; controlling the radiation pattern is largely what arrays are about, so hybrids usually end up sounding a trifle inconsistent. I'd probably run them all as leaky sealed / resistively vented boxes to drop box Q relative to size & better control the impedance, which generally makes life easier.
Are the speakers designed for direct coupling to the wall or standing away from the wall?
If you have some space for your speaker's I would create on the front a MMTMM array and on the back one/two of the M to have a nice bipole speaker setup.
Tried it once with very cheap Visaton-chassis and it sounded not bad.
Turning the speaker on the backside off minimized the impression of the huge soundstage to simple two speakers...Probably worth a try?
If you have some space for your speaker's I would create on the front a MMTMM array and on the back one/two of the M to have a nice bipole speaker setup.
Tried it once with very cheap Visaton-chassis and it sounded not bad.
Turning the speaker on the backside off minimized the impression of the huge soundstage to simple two speakers...Probably worth a try?
First thing I would do with those speakers is measure one of them. Although they are related to the paper TC9, Part Express lists them as 123 Hz to 10 kHz.
I would suggest to find out if they have enough top end extension to be run full range.
As mentioned in the http://www.diyaudio.com/forums/full-range/268626-vifa-tc9fd18-08-best-bang-buck-9.html#post4207006 thread they are said to have a real sweet mid range.
I would suggest to find out if they have enough top end extension to be run full range.
As mentioned in the http://www.diyaudio.com/forums/full-range/268626-vifa-tc9fd18-08-best-bang-buck-9.html#post4207006 thread they are said to have a real sweet mid range.
is it a requirement for mids in the array to be in single vertical line? is there any other design pattern in which drivers can be mounted? what happens when drivers are placed adjacent? for ex. see the pic below.
Avoid side to side variations as that makes lobing more apparent as you walk around or shift your head or turn your head. Lobing is angular dependent response due to driver-driver interference. It happens vertically of course but less noticeable as we only change elevation when sitting standing.
forgot to mention, drivers will be used just as mids covering upto 5khz.(although its a wideband driver). so with cutoff at 5khz also will the lobing be an issue? by reducing xover point can the lobing issue be resolved?
how about back to back (dipole!?) arrangement. 16 drivers per side. 8 facing front and 8 facing the other way. basically i want to avoid building very tall speakers (both by complexity and aesthetics point of view)
I just got the measured T/S params from one of the first samples shipped out - the DIYer who did these measurements is a fairly advanced speaker builder who has built Cornu Spirals, TABAQs, Foam-core builds and so on - the numbers can be relied upon:
SPL - 83.99 db (1W/1m)
86.49 db (2.83Vrms)
Fs - 124.49 Hz
DCR - 4.498 ohms
Z max - 14.49 ohms
Z min - 4.498 ohms
Qms - 3.1861
Qes - 1.4339
Qts - 0.98713
Vas - 1.2036 lt.s
Sd - 36.317 sq.cm
BL - 2.4838 N/Amp
Mms - 2.5155 gm
L(e) - 0.09799 mH (10k)
The measured numbers are fairly spot-on to the published numbers at the Parts Express page (perhaps those numbers were also measured T/S params from real samples).
It probably depends on listener preferences and cabinet/BSC network design - if the BSC is overcompensated, it may require a helper tweeter. Some optimization based on prototyping/tweaking seems to be in order.
He says he has a 5 octave span on the mids for the critical telephone band with no XO, so I assume that means circa 300Hz to 5kHz. Maybe the cocked at an angle makes the lobing asymmetric and not as noticeable. Make no mistake, there is lobing going on there. You can read more in his patent:
https://docs.google.com/viewer?url=patentimages.storage.googleapis.com/pdfs/US6801631.pdf
one option would be to use back to back connected drivers as in below fig.
this is space saving and can use upto 16 drivers per channel without making speaker too much tall and still having good total cone area.
this is space saving and can use upto 16 drivers per channel without making speaker too much tall and still having good total cone area.
How in the name of fornicating gibbons did that get a patent? Speakers with variations on this theme have existed since< the 1950s.
Then again, pretty much anything can get a patent these days -including methods that send EM signals through other dimensions to increase the speed of transfer. And if you think I'm kidding, I'm not. That dooling nonsense actually got a patent. I give up.
Never heard them, and maybe they do sound good, but this quote made me laugh and spill some coffee this morning! Gotta love marketing quotes!
"They possess the clarity of studio master tapes." Geoffrey Dillon, audio guru
Didn't know master tapes had sounds! Thought they were played through studio monitors!
Or maybe it means that when playing your mp3 files, you will have the feeling of being in there in the studio with the artist(s).
😛
"They possess the clarity of studio master tapes." Geoffrey Dillon, audio guru
Didn't know master tapes had sounds! Thought they were played through studio monitors!
Or maybe it means that when playing your mp3 files, you will have the feeling of being in there in the studio with the artist(s).
😛
Am I the only one that can't figure out what this picture means?
For what it's worth, I wouldn't put the speakers side by side.
sorry for not explaining clearly. the drivers are connected back to back. the magnets are inserted in the pipe at both ends.
The Vas for this driver is about 1 liter, which means you need at least 2 liters in the sealed space in between two of them if you want to even get close to having bass that extends down to fs of 120Hz. They should share a common cabinet volume to maximize the volume available. I think a small pipe with two drivers stuffed in is too small of a volume and they will sound very congested with all the back wave energy coming back through the cones.
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