Already tried in the past, but the overall sound become so thin that it's not easy to evaluate correctly the driver behaviour, but I'll repeat the test listening more carefully
Anyway now based on suggestions gathered on this thread I wanna try these step in this order
- baffle step compensation
- remove 2nd magnet
- play in free air with a temporary open baffle
- put them in another temporary box
Any test just to see if I can get rid of that resonance and not to evaluate the overall sound quality; if they fail it mean this speaker is not made for me
It would be a pity because to me it seems a little gem of audio technology
Anyway now based on suggestions gathered on this thread I wanna try these step in this order
- baffle step compensation
- remove 2nd magnet
- play in free air with a temporary open baffle
- put them in another temporary box
Any test just to see if I can get rid of that resonance and not to evaluate the overall sound quality; if they fail it mean this speaker is not made for me
It would be a pity because to me it seems a little gem of audio technology
Yes, but the matter is to identify the right frequency range
At the beginning I thought it was that nasty spike at 10Khz, but while that spike completely disappear listening 20 degrees of axis, as reported in the product FR plot and confirmed by my measurement, not so the harshness in the voice, so must be elsewhere
At the beginning I thought it was that nasty spike at 10Khz, but while that spike completely disappear listening 20 degrees of axis, as reported in the product FR plot and confirmed by my measurement, not so the harshness in the voice, so must be elsewhere
Hi Jeff. The notch was at 2.2 kHz approx. -3 db. Iam used to BBC kind of sound so, after long listening sessions I decided to add a notch.
Andrej.
Andrej.
In my sims the difference between 1 and 2 magnets is close to negligable in terms of alignment, not sure how it affects anything above. I have only ever tried it once, and that was so i could quickly fir it into Maeshowe wit the tricjk air-cavity, and only to save having to dig out a pair of scissors and cut a hole in the piece of damping felt.
In your case a quck way to quickly reduce the amount of obstruction from the magnet and see if it makes a difference.
dave
UPDATE
Just tried some test, inside the pipe or naked driver, with and without a baffle
Purple = Inside enclosure + baffle
Gray = Naked + baffle
Blue = Inside no baffle
As you can see, the peak @700 Hz is always present
Just tried some test, inside the pipe or naked driver, with and without a baffle
Purple = Inside enclosure + baffle
Gray = Naked + baffle
Blue = Inside no baffle
As you can see, the peak @700 Hz is always present
Now drop in a 15 liters box, the FR is more balanced
But voices still remain coarse and metallic, they remind me the vocal synthesizer of my old good commodore 64
Not that bad, but to give you an idea of the overall feeling
Same amp with KEF Q100 is simply wonderful
But voices still remain coarse and metallic, they remind me the vocal synthesizer of my old good commodore 64
Not that bad, but to give you an idea of the overall feeling
Same amp with KEF Q100 is simply wonderful