Measurement
[1. Appearance ]
• Machined aluminum housings.
Audio-Technica claims that these housings greatly reduce unwanted resonance for crisp mid- and high-range reproduction.
• World’s first dual phase push-pull drivers (13 mm x 2) used.
these drivers provide extended frequency response by reducing intermodulation distortion, Audio-Technica insists.
Audio-Technica ATH-CKR9 measurement
[2. Frequency Response ]
Raw
Diffuse Field Target Compensated
• ® ISO 11904-2
Olive Wleti Target Compensated
• ® AES 8994
CSD - Olive Welti Target Compensated
[3. Phase ]
Minimum Phase
[4. Square Wave]
• 300Hz
• 30Hz
[5. Harmonic Distortions ]
• 94dBSPL @ 500Hz
[6. Impedance ]
• DC Ohm
• Black: Impedance Magnitude
• Green: Electrical Phase
[7. Insertion Depth ]
Uncompensated
• Black: 4 mm
• Blue: 6.8 mm
away from the reference plane
[Effect of Comply™ Foam Tip ]
Uncompensated
• Black: Normal
• Orange: with Comply™ Tip T-500
The canal resonance was shifted down with the Comply tip at the same depth. Are the stock tips that much longer?
ReplyDeleteYou could construct the square waves from magnitude response and phase plots. Why add them now?
Comply tip is much longer.
DeleteThese two measurements, lengths from ref plane are the same but depths are different.
So if match the both tips at same length from reference plane(measuring the length of ref plane ~ end of the eartip), insertion depth of comply tip is little bit more shallow.
I thought the square wave is not that useful, but I changed my mind that it's quite useful when analysing the bass response.
What do square waves show that is not already indicated by the phase, CSD, or magnitude response?
DeleteActually it is related with frequency responses and the sound leakage of headphones. Square wave is not necessary for data analysis, but it helps to interpreting better.
DeleteCheck this out.
http://i.imgur.com/x3mEfTd.jpg