AudiogoN Forums: Tailoring tweeter output

Tailoring tweeter output

Many companys recommend listening with grill on, like Avalon or Dynaudio. On stereophile measurements, the grill changes direct output from the speaker significantly. I am experimenting with this, any recommendation on specific material. Does the reflected from the padding/grill sound create any issues?

THanks

Glai (System | Threads | Answers | This Thread)

03-13-10

Responses (1-15 of 15)

Click title to read one, or click date to read all below it.

03-13-10 Not sure this is a good idea. what are you trying to accompl ... Rtn1

03-14-10 Recently listening nearfield and find the ribbon tweeter too ... Glai

03-14-10 I used to listen with grills off. now i prefer the sound wit ... Rrog

03-14-10 I see you've spent alot of time optimizing your set-up posit ... Rtn1

03-14-10 The ribbon tweeter has very wide dispersion so toe change wi ... Glai

03-14-10 After looking at pictures of your system i see the problem. ... Rrog

03-14-10 I hav tried the long wall setup. it is the same with much m ... Glai

03-15-10: Audiokinesis
The problem with acoustic attenuation of your tweeter's output is that any material absorptive enough to make a significant differnce down at the bottom end of your tweeter's range is going to be overly absorptive in the top octave.

Assuming were talking about the Sarastros, I would consider experimenting with maybe one inch thick open-cell foam along either side of the tweeter, cut so that the sides are V-shaped, sort of like the faceplate's angle around the tweeter diaphragm. The idea is to allow the tweeter to output unimpeded across a reasonably wide arc (maybe 90 degrees or so), and then attenuate its output beyond that arc. We want the foam to be thick enough that it will effectively attenuate energy at the lower end of the tweeter's range. I really don't know if this will work or not, and several tries would probably be necessary to fine-tune if the initial try is promising, but I think this has a better chance of making a net improvement than placing absorptive material in front of the tweeter.

Duke
dealer/manufacturer
Audiokinesis (Threads | Answers | This Thread)

03-15-10 Raal uses 2 foam blocks to adjust radiation pattern these re ... Johnk

03-15-10 I understand it's an old recording engineer's trick to drape ... Hesson11

03-18-10 How far apart are the speakers? Rrog

03-19-10 It doesn't make sense that you can move your system from the ... Rrog

03-21-10 Many thanks to everyone. i will update this as i try the su ... Glai

03-21-10 Good luck. and don't forget to try the toilet paper! -bob Hesson11

04-19-10 Forgive my ignorance buy why are you trying to reduce the tw ... Kevinzoe