JVC FDX1 Measurements Dump...
Disclaimer: non IEC-compliant, for illustration purpose only. All graphs are diffuse field compensated.
FDX1 filter comparison:
(red = white filters, green = yellow-green filters, blue = blue filters)
Personal remarks:
- White filters are equivalent to FD01 stock tuning (all three FD01 nozzles measure basically the same). Too much upper mids and treble energy in my book. Extremely detailed, but fatiguing.
- Yellow-green filters are "reference" tuning, slightly v-shaped with a touch of warmth, yet still very detailed and pretty close to my idea of neutral.
- Blue filters are "relaxed" tuning, warmer and more easy-going than "reference". Works particularly well when you're out and about, where a little tilt towards the lower frequencies comes in handy.
FDX1 vs. ER4S:
(red = white filters, green = yellow-green filters, blue = blue filters, orange = ER4S)
Personal remarks:
- Even though bass seems close, FDX1 has noticeably more perceived punch (DD vs. BA)
- ER4S has slightly more forward mids and sounds more intimate. FDX1's slight v-shape and better treble extension create a more airy and open sound with larger soundstage.
FDX1 vs. UERM:
(red = white filters, green = yellow-green filters, blue = blue filters, magenta = UERM)
Personal remarks:
- FDX1 has better sub-bass extension in comparison to UERM's slight roll-off.
- UERM sounds a tad more intimate due to slightly more forward mids.
- UERM's highs sound harsher and more prone to sibilance than FDX1's (with yellow-green and blue filters), due to peaks in lower treble.
FDX1 vs. EX1000:
(red = white filters, green = yellow-green filters, blue = blue filters, black = EX1000)
Personal remarks:
- FDX1's slight bass-lift makes it sound a tad more punchy and "fun" as compared to EX1000.
- Mids are actually pretty similar, however EX1000's upper mids and treble peaks make it sound rather harsh, particularly on higher volume.
- FDX1's treble (with yellow-green or blue filters) sounds silky-smooth in comparison to EX1000's.