Yes i have seen ARTA CSDs, they are fine indeed.
It is a new type of bending wave transducer. Manufacturers of bending
wave transducers would surely be glad to have something which comes
even close.
And they would surely be glad if they knew how to achieve the
properties.
Several materials are posible, but its too early now for details ...
It was just "the current speaker under test".
Kind Regards
Attached graph shows some speakers in the same room but
different positions. Positions and room are both suboptimal.
RED:
Bookshelf Speaker with ribbon tweeter, measured slightly
below the tweeter axis, should better be above.
Free standing, needs closer rear wall or bookshelf,
too less bass in that position.
BLUE:
Bending Wave Transducer
Side wall too near.
GREEN:
Dipol 08 Line Array
Mike sould be somewhat higher on ear height.
Rear / side wall is too near.
No subwoofer, 1 satellite only.
But nevertheless:
The Bending Wave Transducer has lowest bass extension,
smoothest phase rotation, lowest distorsion and the smoothness
of FR is at least on the same level with the "conventional colleagues".
The top end roll off can be fixed easily like mentioned before.
Not to mention is has the smoothest dispersion in the highs.
Kind Regards
different positions. Positions and room are both suboptimal.
RED:
Bookshelf Speaker with ribbon tweeter, measured slightly
below the tweeter axis, should better be above.
Free standing, needs closer rear wall or bookshelf,
too less bass in that position.
BLUE:
Bending Wave Transducer
Side wall too near.
GREEN:
Dipol 08 Line Array
Mike sould be somewhat higher on ear height.
Rear / side wall is too near.
No subwoofer, 1 satellite only.
But nevertheless:
The Bending Wave Transducer has lowest bass extension,
smoothest phase rotation, lowest distorsion and the smoothness
of FR is at least on the same level with the "conventional colleagues".
The top end roll off can be fixed easily like mentioned before.
Not to mention is has the smoothest dispersion in the highs.
Kind Regards
Attachments
Last edited:
Attached is the test I promised in another thread showing the 400 hz phase inversion.
Also, is the impulse response acceptable? I'm not sure what's good and not good on this measurement parameter.
Also, is the impulse response acceptable? I'm not sure what's good and not good on this measurement parameter.
Attachments
Doesn't this - http://www.holmacoustics.com/downloads/HOLMImpulse/HOLMImpulseUserGuide.pdf tell you what you need to know?
I'm afraid not. There doesn't seem to be any info on the soundcard and mic. What can be used and setup...
OK. I'll have to start reading through the 30 pages I suppose.
Thanks neighbor! from CLT, NC.
"Search this thread" feature is handy.
As I said, a Dayton or Behringer measurement mic (see Parts Express) and a USB soundcard with phantom power. Easy! Look at M-Audio for the soundcard. Used on eBay everyday, too. Get you a boom type mic stand and some XLR cable and you're good to go.
It's easy, really.
As I said, a Dayton or Behringer measurement mic (see Parts Express) and a USB soundcard with phantom power. Easy! Look at M-Audio for the soundcard. Used on eBay everyday, too. Get you a boom type mic stand and some XLR cable and you're good to go.
It's easy, really.
Well that's debateable , Don't you think !
If your new and there are problems you need the troubleshooting skills or you will be wasting your money !!
And beleive me they can be tough to pin down !!
I created this link a while ago...its not perfect but its a simple starter guide to using HOLM.
HOW TO: Measure using HOLM and ARTA - AVS Forum
HOW TO: Measure using HOLM and ARTA - AVS Forum
Thanks Doug for the link. I wish I had that 6 months ago when I started using HI on a regular basis.
Click on 'file' and scroll down the options list and you'll find a subsection on saving screen shots as jpegs, etc...
