this is a recording of the 3mm ply i found and the graphite eps, the ply is on the right, recorded at 1m.
i used the sub up to 250hz and the panels went down to 90hz.
this was recorded from an old LP my parents had, I de-clicked it first, a few years ago.
i am sure they never played it,,but it needed de-clicking anyway.
steve.
i used the sub up to 250hz and the panels went down to 90hz.
this was recorded from an old LP my parents had, I de-clicked it first, a few years ago.
i am sure they never played it,,but it needed de-clicking anyway.
steve.
Lets say you were going to use (6) six exciters rated at 4 ohm\25 watts to drive a large 4x4 panel. Would you wire (2) lots of 3 in series then wire the lots of 3 in parallel to get 6 ohms. Or would you wire (2) units in parallel three times and wire the result in series to get 6 ohms? Which would perform better as each exciter is rated at 25 watts, which results in higher power handling and sensitivity?
I probably wouldn't use 6 exciters on the same plate, and not such a large square plate.
But as for connecting you have either 2 strings with 3x4 ohm, giving 12/2 = 6 ohm, or you have 3 strings with 2x4, giving 8/3=2.66 ohm.
Yeah....NO BOTH are 6 ohm. Does anyone here actually have any KNOWLEDGE? I am actually looking for someone with EXPERIENCE and basic electronic knowledge like OHMS law. If you do not meet those requirements DO NOT REPLY.
john78,
The two 6 ohm wirings you described are effectively identical to each other, they would perform the same, assuming the resistances are all actually 4 ohm.
Leob was describing a third wiring possibility, but which would result in lower resistance, as he said.
Eric
I do think john78 is a troll...hard to think someone can actually be that unpleasant and moronic for real hoping that people will help him out.
Now, I'm no electronics engineering professor but I can handle some adding and dividing.
But I fail to understand this as anything else than three strings with 2 exciters in each; "wire (2) units in parallel three times and wire the result in series". That will give you 2.67 ohm, not 6.
I cannot think of any alternative than 2 strings with three exciters each that will give 6 ohms...what configuration are you thinking about Eric?
Now, I'm no electronics engineering professor but I can handle some adding and dividing.
But I fail to understand this as anything else than three strings with 2 exciters in each; "wire (2) units in parallel three times and wire the result in series". That will give you 2.67 ohm, not 6.
I cannot think of any alternative than 2 strings with three exciters each that will give 6 ohms...what configuration are you thinking about Eric?
Hi john78
After almost one year of exchanges on this thread, I can say you should find here different knowledge and experience, all valuable. Depend how the question are written... precise enough, pleasant to read. While speaking about circuit architecture even the simplest, some schematics help. Some introduction with what you intent to do also. Up to you.
"I do think john78 is a troll...hard to think someone can actually be that unpleasant and moronic for real hoping that people will help him out."
Yep, someone needs a nap!
Yep, someone needs a nap!
Hi Christian
LoL..😜 Soon I hope 👍
I've been trying to get to it but I've been swamped this last week
Cheers
Eucy
I'm thinking about building dml, don't know what sort of material to use, I hoping for something natural. Something other then acrilic or fiber glass reinforced material, plywood or so.. but main question I have trouble finding is the possibility to use something like phased array/beam forming for left and right? Is it possible to put the two exciters on one surface? My theory is that sound from one channel is reflected/blocked/absorbed by the other channels echter. Does any one know if this works?
Hi all 🙂
This has probably been asked before but I couldn't find an answer:
- Could a long and narrow DML be used as a center speaker, placed horizontally under a 65" TV?
Edit : ... with a subwoofer
This has probably been asked before but I couldn't find an answer:
- Could a long and narrow DML be used as a center speaker, placed horizontally under a 65" TV?
Edit : ... with a subwoofer
Thank you both 🙂
The material would preferably be something I can "decorate" (as in paint or cover up with fabric).
It could be the whole length of the TV (~55") and a maximum of ~8" tall.
The material would preferably be something I can "decorate" (as in paint or cover up with fabric).
Hilbren.
Dml does not operate the same as a pistonic speaker in the low end.
Various panels can produce frequencies down to 40hz with my exciters.
What is the size of the panel you are thinking about.
I have not tried 2 exciters on a panel in stereo, but see no reason why it should not work.
But obviously a small panel will not have as much stereo separation.
Steve.
Dml does not operate the same as a pistonic speaker in the low end.
Various panels can produce frequencies down to 40hz with my exciters.
What is the size of the panel you are thinking about.
I have not tried 2 exciters on a panel in stereo, but see no reason why it should not work.
But obviously a small panel will not have as much stereo separation.
Steve.