Measurements
Etymotic Research ER4SR (*Studio Reference)
• Single BA (Knowles RAB)
• Detachable custom MMCX cable
• Green acoustic damper
• US $ 349 [MSRP]
Etymotic Research ER4SR measurements
[1. Frequency Response ]
Uncompensated
Diffuse Field Target Compensated
Harman Target Compensated
CSD
[2. Square Wave ]
30 Hz
300 Hz
[3. Minimum Phase ]
[4. Harmonic Distortions ]
94dB SPL @ 500 Hz
[5. Impedance ]
Black: Impedance Magnitude
Green: Electrical Phase
[6. Eartips ]
Uncompensated
Black: ER38-18CL
Orange: ER38-14F
Uncompensated
Black: ER38-18CL
Orange: ER38-17
Uncompensated
Black: ER38-18CL
Orange: ER38-15SM
[7. Insertion Depth ]
Uncompensated
Orange: -1 mm
Black: 0 (General)
Green: 2 mm
Away from the reference plane
[8. Added resistor ]
Uncompensated
Black: 0 ohm
Orange: 140 ohms
Resistor
[9. Acoustic dampers ]
Uncompensated
• Black: No damper
• Black: No damper
[10. Comparison ]
①
Uncompensated
Etymotic Research
• Black: ER4SR
• Orange: ER-4S
②
Uncompensated
Etymotic Research
Black: ER4SR
Orange: ER-4P
Stunning. Time to start saving up!
ReplyDeleteGreatly improved on outer design.
DeleteAfter snapping the ear stem on a pair, I didn't trust it any more. It's about time they went with a metal body. The detachable cord is also a huge plus.
Delete👍
DeleteThanks for the review. It would be nice to see the measurement of ER4XR as well.
ReplyDeleteYes, I'm curious about ER4XR as well
DeleteExcellent set of measurements once again.
ReplyDeleteThanks!
DeleteSo Looks like no big improvements. They didn't improve the distortion or bandwidth. XR is more interesting but the distortion numbers should be about the same. The biggest improvement is the shell design
ReplyDeleteYeah, metal housing looks quite classy.
DeleteDistortion is higher on the XR --- it's a vented BA. Ety tolerates up to 2% distortion for the XR on 200 mV drive.
DeleteExcellent but I wish the drivers had tighter matching in the sub-bass.
ReplyDeleteI agree. As far as I know, Etymotic conducts the quality control(QC) in 100 Hz ~ 10kHz.
DeleteThe distortion of xr is 0.7-0.9% and bass is twice as much as er4s. Added a resistor which helps a lot of the high end.
ReplyDeletethis is definitely helping me decide if i should upgrade my ER4s now. Thanks :)
ReplyDeleteYour graph matches exactly what I hear. I have an eq based on your Harman compensated graph that really neutralizes these, but would you mind posting an eq setting that we can verify by your graphs neutralizes them truly accurately?? I am making an analogue filter and this would be so helpful. Just a three or four point setting to fix the biggest issues?
ReplyDeleteI don't have this pair right now.. sorry mate
DeleteHello there, do you know the distance between the driver and the damper?
ReplyDeleteAlso what is the resistor value used in it?
Thank you :))
I don't know the distance between the driver and the damper, but the resistance of acoustic dampers are 1,500 Ohms.
DeleteHello there, i've been looking at your graphs for some time and it's a wealth of information.
ReplyDeleteFor ER4SR, i'm wondering how you can achieve that graph with triple flange clear while Crinacle and Accufidelity looks different than yours.
When doing sine sweeps with my ears using the triple flange clear, your graph looks like what i hear when doing sine sweep. I wonder what caused the discrepancy? Did you do any modification to your rig?
Cheers.
Hi, I didn't do any modification to the rig. Perhaps that discrepancy is due to the nozzle insertion depth.
DeleteThis comment has been removed by the author.
ReplyDeleteDo you have ER2SE measurement?
ReplyDelete