Measurement
Audeze EL - 8 Open - Back
• 100 mm planar magnetic driver
•Detachable Cable
• Designed by BMWDesignWorks USA
< Technologies that applied in Audeze EL-8 Open-Back >
• Fluxor™ magnetic structure
It delivers nearly double the magnetic flux density of the highest grade neodymium magnetic circuits available.
• Uniforce™ diaphragms
Employs variable trace widths in the voice coil to effectively capture variations in the magnetic field within the magnetic gaps by equalizing the forces of the individual traces, creating a uniform driving force across the entire diaphragm surface.
• Fazor™ elements
Fazors are special acoustical elements that positioned on either side of the magnetic structure, and are affecting the sound waves.
Audeze El-8 Open-Back Measurement
[1. Frequency Response ]
Check my Measurement Procedures first.
Uncompensated
Uncompensated (Overlay Off)
Gray: Uncompensated
Colors: Diffuse Field Target Compensated
Diffuse Field Target Compensated
Olive Welti Target compensated
Harman Target Compensated
CSD - Olive Welti Target compensated
[2. Square Wave ]
300Hz
30Hz
[3. Minimum Phase ]
[4. Harmonic Distortions ]
94 dB SPL @ 500Hz
[5. Impedance ]
Black: Impedance Magnitude
Green: Electrical Phase
[6. Detailed FR Plots ]
Uncompensated
Red: back
Pink: center
Orange: down
Yellow: forward
Green: up
Black: averaged
[7. comparison ]
Uncompensated
Black: Audeze EL-8 Opened-Back
Orange: Sennheiser HD 650
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[8. Blocked the rear grill with tape ]
Uncompensated (Right Channel Only)
Diffuse Field Target Compensated
Harmonic Distortions
94 dB SPL @ 500Hz
If it wasn't for that gaping hole centered at 6.6khz, they would probably be outstanding.
ReplyDeleteYou're right. I can say that extremely low distortions and flat bass response are pretty outstanding, but the excessive dip at highs is quite disappointed.
DeleteIf the Olive-Welti target has any meaning, then this headphone must sound aweful. Emphasized mids and fully removed brilliance, which also means reduced sound stage and zero fun left in listening. How can such a product even enter the market?
DeleteWell, it isn't that bad..
DeleteIn fact, it just 'looks like' the mids is emphasized, due to the dB decrement of bass response in o-w target curve itself. Also don't put too much meaning on 7kHz dip, it surely is dissatisfied characteristic on acoustic perspective, but I bet that it doesn't excessively effects the sound brilliance and sound stage.
Any plan to measure a closed-back?
ReplyDeleteNot decided yet.
DeleteHow about measuring it with rear grills blocked?
DeleteOkay, I'll give it a try.
DeleteAdded the datas, [8. Blocked the rear grill with tape].
DeleteOn the topic of the blocked grills, I take it that the dip at 200Hz is due to the pad resonance and the increased sub-bass output is due to the cup resonance?
ReplyDeleteI've found that many closed headphones have this characteristic of sound, such as Sony MDR-7506 and Beyerdynamic DT770 where 200Hz feels a bit weak, and the sub-bass is strong.
It looks like the sub-bass is increased, however the fact is, sub-bass was unchanged but only lower-mids (200~1000Hz) is decreased. I turned up the volume on purpose to match the 94 dB SPL @500Hz. IMO, cause of diminishment in lower-mids is due to acoustic impedance was increased.
Delete