Thanks! ... wonder if the non linear tendencies in the impedance measurement have major impact in time domain.
Hi Lukazs
where did you find those measurements?
(I am using 4001 and your/JMLC iwatas)
Gianluca
Hello,
Despite Earl's unfair words and even if I am not the one who performed the measurements I am really certain that many people will appreciate at least the smoothness of the (unequalized !) frequency response of the TD4001 + Iwata 300 couple and the most excellent performance in distortion (H2 curve = replica of the FR curve: no peak of distortion near the frequency cut-off....) that no OS waveguide will ever offer (and lead someone to try desesperately to prove that distortion doesn't matter, when audiophiles ears every day prove the inverse...).
You'll find here attached an measurement (unequalized) I used to perform at 1 meter from the mouth of a Radian 760Neo on an Iwata 300 belonging to a friend. For sure the quality of the Radian 760Neo is not the same as the TAD TD4001.
Best regards from Paris, France
Jean-Michel Le Cléac'h
Despite Earl's unfair words and even if I am not the one who performed the measurements I am really certain that many people will appreciate at least the smoothness of the (unequalized !) frequency response of the TD4001 + Iwata 300 couple and the most excellent performance in distortion (H2 curve = replica of the FR curve: no peak of distortion near the frequency cut-off....) that no OS waveguide will ever offer (and lead someone to try desesperately to prove that distortion doesn't matter, when audiophiles ears every day prove the inverse...).
You'll find here attached an measurement (unequalized) I used to perform at 1 meter from the mouth of a Radian 760Neo on an Iwata 300 belonging to a friend. For sure the quality of the Radian 760Neo is not the same as the TAD TD4001.
Best regards from Paris, France
Jean-Michel Le Cléac'h
Attachments
Unfair? Really? Do you still contend that one can get a meaningful measurement of a waveguide at 30 cm, i.e. right in the mouth? Your own data shows the falicy of this point of view.
Or measuring at 1 meter gives completly different results than at 30 cm.
Or measuring at 1 meter gives completly different results than at 30 cm.
TAD (4001/2001) traditionally has metal suspension unlike Radian 950?
Earl - directivity wasn't an object of interest in that measurements 🙂
Earl - directivity wasn't an object of interest in that measurements 🙂
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Could you tell us more about these? Are you going to be offering the fron panels for sale? Is that a port on the back?
Hello,
For sure the fact that there is NO NEED for equalization for the TAD TD4001 + Iwata 300 should obviously lead to some jealeousy ...
Best regards from Paris, France
Jean-Michel Le Cléac'h
For sure the fact that there is NO NEED for equalization for the TAD TD4001 + Iwata 300 should obviously lead to some jealeousy ...
Best regards from Paris, France
Jean-Michel Le Cléac'h
No, not in the least.
Physics requires that any source which is Constant Directivity cannot be flat on axis. Hence, the flat response is simply proof that the device is not constant directivity. I would be impressed if it fell at 6 dB/oct though - in the far-field that is, because everything looks good at 30 cm.
Physics requires that any source which is Constant Directivity cannot be flat on axis. Hence, the flat response is simply proof that the device is not constant directivity. I would be impressed if it fell at 6 dB/oct though - in the far-field that is, because everything looks good at 30 cm.
Front, back, crossover for DE250 + 10CL51 is available, carpentry is planned. Active bass module - not sure depends on company that made panel amplifier, will see after Munich Messe and people impressions. Personally I like it very much but sub is a must. This is a budget project, first made out of solid surface with great value and performance.
This is a 10cm port on the back (Jantzen/Polink).
Iwata 300 + CP750Ti + 12BR70, Palisander Rio + Hartzlak. (Originator - Miroslaw Markiewicz).
