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 The problem with acoustic attenuation of your tweeter's outp ... Audiokinesis

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: Kevinzoe
Forgive my ignorance buy why are you trying to reduce the tweeter output from a speaker you love? Trying to surpress the tweeter will be like killing the "air" and sonic life of certain instruments.

By chance have you considered - like in Kung Fu?! - to redirect the energy instead? Use a diffuser on the side walls - 1D works best for latteral diffusion, as in QRD or hemi-cylindrical - and begin with the diffuser in line with your listening chair and push it towards the front wall in 2"-3" increments and listen to the same track over and over again. You'll be surprised at how the sound will change.

I've found that the sound is best when (i)the 1st side wall reflecltion point closest to the speaker is a bare reflective wall, and (ii)the other 1st reflection point from the speaker on the other side of the room is diffused. Floyd Toole in his latest book says that the most significant side wall reflection that is a positive affect in creating apparent sound source width and envelopment came from 60degrees, with looking straight ahead being 0degrees and over your left (or right) shoulder as being 90degrees. You can use trigonometry to find that 60degree mark.

You might also want to toe in your speeakers so that your limited dispersion mid driver is aimed just behind your head while any excess tweeter treble sound is diffused so as to keep the energy and 'liveness' of the sound in tact.

Hope this helps . . .
Kevinzoe (System | Threads | Answers | This Thread)