Measurement's report AKG K 240 MK2 - Reference Audio Analyzer

Reports / AKG / K 240 MK2 - report for a pro

AKG K 240 MK2 (report for a pro)

Test report - general data AKG K 240 MK2 headphone

Frequency response, Impedance, Frequency response with standard AMPs

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Perception of headphone frequency response curves of equal loudness ISO 226-2009

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Sensitivity average in band from 100 Hz - 10 kHz106.2dB/V SPL
95.5dB/mW SPL
Impedance average in band from 40 Hz - 15 kHz84.7ohm
For 90 dB SPL, a voltage is required-16.2dBV
0.155VRMS
Taking into account the peak factor of 9 dB for the music signal-7.2 dBV
0.438VRMS
Measurements were performed on the stand:HDM-X






Frequency response and sensitivity headphones AKG K 240 MK2 headphone

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Channel

Frequency band

Channel:LeftRight
Sensitivity average in band from 100 Hz - 10 kHz105.8 106.5dB/V SPL
Sensitivity average in band from 100 Hz - 10 kHz95.095.8 dB/mW SPL
Sensitivity at 1 kHz103.7105.4dB/V SPL
Sensitivity at 500 Hz105.4105.7dB/mW SPL


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Frequency response of headphone AKG K 240 MK2 headphone

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Channel

Range

Frequency band

Smoothing

Channel:LeftRight
Variation in frequency response in band from 100 Hz - 10 kHz -7.7, +2.1-5.0, +1.9dB


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Impedance AKG K 240 MK2 headphone

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Channel

Frequency band

Channel:LeftRight
Impedance average in band from 40 Hz - 15 kHz83.8 85.7ohm
Resistance at 1 kHz56.1 56.2ohm
Resistance at 500 Hz63.6 62.1ohm
The minimum value in band from 40 Hz - 15 kHz55.8 56.0ohm
The maximum value in band from 40 Hz - 15 kHz210.1 213.5ohm


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Electric phase AKG K 240 MK2 headphone

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Channel

Range

Frequency band

Channel:LeftRight
Phase deviation is the average in the range 40 Hz - 15 kHz5.0 3.9degree
Phase at 1 kHz-5.6 -5.5degree
Phase at 500 Hz-17.0 -16.5degree
The minimum value in band from 40 Hz - 15 kHz-33.8 -33.4degree
The maximum value in band from 40 Hz - 15 kHz38.7 38.1degree




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Perception of headphone frequency response curves of equal loudness ISO 226-2009

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Channel

Range

Variation in frequency response in band from 30 Hz - 12 kHz
Channel:LeftRight
Deviation -36.0 dB-18.5, +9.0 (27.5)-19.8, +8.5 (28.4)dB
Deviation -24.0 dB-14.3, +7.0 (21.3)-15.6, +6.6 (22.2)dB
Deviation -12.0 dB-10.0, +5.0 (15.1)-11.4, +4.8 (16.2)dB
Deviation 0.0 dB-6.8, +3.9 (10.6)-7.2, +4.1 (11.3)dB
Deviation 12.0 dB-7.8, +4.5 (12.3)-4.9, +4.2 (9.0)dB
Deviation 24.0 dB-9.0, +6.5 (15.4)-6.4, +5.5 (11.9)dB
Deviation 36.0 dB-10.7, +8.5 (19.3)-8.1, +7.5 (15.6)dB

Variation in frequency response in band from 40 Hz - 1 kHz
Channel:LeftRight
Deviation -36.0 dB-18.5, +9.0 (27.5)-19.8, +8.5 (28.4)dB
Deviation -24.0 dB-14.3, +7.0 (21.3)-15.6, +6.6 (22.2)dB
Deviation -12.0 dB-10.0, +5.0 (15.1)-11.4, +4.8 (16.2)dB
Deviation 0.0 dB-6.8, +3.9 (10.6)-7.2, +4.1 (11.3)dB
Deviation 12.0 dB-7.8, +4.5 (12.3)-4.9, +4.2 (9.0)dB
Deviation 24.0 dB-9.0, +6.5 (15.4)-6.4, +5.5 (11.9)dB
Deviation 36.0 dB-10.7, +8.5 (19.3)-8.1, +7.5 (15.6)dB


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Frequency response AKG K 240 MK2 headphone when connected to amplifiers with constant output impedance

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Channel

Range

Frequency response

Variation in frequency response in band from 100 Hz - 10 kHz
Channel:LeftRight
0.1 ohm @ AKG K 240 MK2 + Topping EX5 Hi Gain -5.6, +4.2-3.9, +3.0dB
10.1 ohm @ AKG K 240 MK2 + ASUS Essence One -5.3, +4.9-3.5, +3.4dB
22.1 ohm @ AKG K 240 MK2 + E-MU 1616m -5.0, +5.8-3.3, +4.2dB
50.0 ohm @ AKG K 240 MK2 + Behringer MicroAmp Ha400 -8.6, +7.0-6.9, +4.8dB
98.7 ohm @ AKG K 240 MK2 + ASUS STRIX RAID PRO Hi -4.3, +9.2-2.8, +7.1dB
298.5 ohm @ AKG K 240 MK2 + Gigabyte GA-A75-UD4H Realtek ALC889A -4.1, +12.1-2.8, +9.7dB

Variation in frequency response with amplifiers with constant output resistance @ 100 Hz - 10 kHz
Channel:LeftRight
0.1 ~ 0 ohm @ AKG K 240 MK2 + Topping EX5 Hi Gain 0.00.0dB
10.1 ~ 0 ohm @ AKG K 240 MK2 + ASUS Essence One 2.52.5dB
22.1 ~ 0 ohm @ AKG K 240 MK2 + E-MU 1616m 4.94.9dB
50.0 ~ 0 ohm @ AKG K 240 MK2 + Behringer MicroAmp Ha400 8.78.7dB
98.7 ~ 0 ohm @ AKG K 240 MK2 + ASUS STRIX RAID PRO Hi 14.314.3dB
298.5 ~ 0 ohm @ AKG K 240 MK2 + Gigabyte GA-A75-UD4H Realtek ALC889A 24.424.4dB


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Frequency response AKG K 240 MK2 headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies

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Channel

Range

Frequency response

Variation in frequency response in band from 100 Hz - 10 kHz
Channel:LeftRight
AKG K 240 MK2 + Topping EX5 Hi Gain -5.6, +4.2-3.9, +3.0dB
AKG K 240 MK2 + Colorful Colorfly C4 Pro Jack 6.3 -5.6, +4.2-3.9, +3.0dB

Deviation of frequency response @ 40 Hz
Channel:LeftRight
AKG K 240 MK2 + Topping EX5 Hi Gain 0.00.0dB
AKG K 240 MK2 + Colorful Colorfly C4 Pro Jack 6.3 2.52.5dB


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Impulse response AKG K 240 MK2 headphone

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Duration for impulse, envelope and step responses

Waveforms

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Square wave AKG K 240 MK2 headphone

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