Measurement
PSB M4U 4
• Two-way Hybrid
• Detachable cable (two cables included)
• iOS-compatible remote control
• RoomFeel™ Technology applied
• $299 USD (MSRP)
• Comes with Comply™ foam tips TX-200
PSB M4U 4 Measurement
[1. Frequency Response ]
① Stock Silicone Eartip
Uncompensated
Diffuse Field Target Compensated
Olive Welti Target Compensated
Harman Target Compensated
② Stock Comply Foam Tip (TX-200)
Uncompensated
Diffuse Field Target Compensated
Olive Welti Target Compensated
Harman Target Compensated
CSD
[2. Square Wave ]
30 Hz Square Wave
300 Hz Square Wave
[3. Minimum Phase ]
[4. Harmonic Distortions ]
94 dB SPL @500 Hz
[5. Impedance ]
Black: Impedance Magnitude
Green: Electrical Phase
[6. Resistor added ]
Uncompensated
Black: 0 ohm
Orange: 90 ohms
Resistor added
[7. Insertion Depth ]
Uncompensated
Green: 2.8
Black: 4.8 (General depth)
Pink: 6.8
mm away from the reference plane
[8. Difference between the silicone and foam ]
Uncompensated
Black: Stock Comply Foam Tip TX-200
Orange: Stock PSB Silicone Eartip
[9. RoomFeel™ Technology Comparison ]
Uncompensated
Black: PSB M4U 4
Orange: NAD VISO HP50
Diffuse Field Target compensated
Black: PSB M4U 4
Orange: NAD VISO HP50
Harman Target Compensated
Black: PSB M4U 4
Orange: NAD VISO HP50
Tonality with foam tip is pretty good! But seems the band width is limited and the treble is a bit peaky...Great work though, thanks for the measurement.
ReplyDeleteYou're welcome and yes, original foam tips that bundled with M4U4 can greatly improve the tonal balance. Really like it personally.
DeleteHow do you feel about the treble (6k and above) subjectively?
DeleteWell first, I can notice the short bandwidth compared to other decent dynamic IEMs. And despite the foam tips did reduce the peaky treble, I can found a little harshness of upper treble, not severe though.
DeleteAnyway, overall tonality is pretty decent, so I'm quite satisfied with this pair of IEMs.
Is the distortion acceptable? And would you comment on the comfort and isolation issues?
ReplyDeleteIMHO, it's a bit high.
DeleteMy personal tolerance of harmonic Distortions is under 1% for 2nd, 3rd harmonics and under 0.1% for 4th and over+ harmonics.
No fitting or isolation issues for me.
I trust Paul Barton's judgement, but that hole at 6khz looks like a crossover misalignment. Maybe because of poor capacitor tolerance?
ReplyDeleteAFAIK, acoustic tuning of M4U 4 is based on the stock foam tip, not a silicone eartip. So maybe developers didn't mind at all with huge dip @ 6kHz, which can be only noticed with silicone tip usage.
Delete저돈 주고 살 물건인가 싶네요
ReplyDelete