Measurement's report AKG K 550 MKII test and graphs - Reference Audio Analyzer

Reports / AKG / K 550 MKII / report for a pro

AKG K 550 MKII (report for a pro)



Test report - general data of AKG K 550 MKII headphone

Frequency response, Impedance, Frequency response with standard AMPs


Graphics setting view
Frequency band, Hz:
Range, dB:

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


General results
General results AKG K 550 MKII
Channel
Center/Summary
Sensitivity average in band from 100 Hz to 10 kHz, dB/V
117,8
Impedance average in band from 40 Hz to 15 kHz, ohm
34,0
For 94,0 dB SPL need, VRMS
0,064
For 94,0 dB SPL need, mW
0,121

The table shows a most important technical characteristics of AKG K 550 MKII

*Center channel headphone is received by averaging between left and right channels



Test conditions
  • Type of headphones: Over-ear
  • Measurements were performed on the stand:
    • with on the simulator of human head with ears HDM-X with natural acoustic damping



Sensitivity of AKG K 550 MKII headphone


Graphics setting view
Frequency band, Hz:
Channel:




Table of measured characteristics
Sensitivity AKG K 550 MKII
Channel
Left
Right
Sensitivity average in band from 100 Hz to 10 kHz, dB/V
118,0
117,6
Sensitivity at 500 Hz at 1 V, dB
117,3
117,4
Sensitivity at 500 Hz at 1 mW, dB
102,5
102,7
Sensitivity at 1000 Hz at 1 V, dB
114,1
115,0
Sensitivity at 1000 Hz at 1 mW, dB
99,3
100,4

The sensitivity was calculated by data from the measuring stand HDM-X


Frequency response of AKG K 550 MKII headphone


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:




Table of measured characteristics
Frequency response AKG K 550 MKII
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-5,46, 10,01
-7,34, 5,75

Impedance of AKG K 550 MKII headphone


Graphics setting view
Frequency band, Hz:
Channel:




Table of measured characteristics
Impedance AKG K 550 MKII
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
33,5
34,4
Resistance at 500 Hz, ohm
33,1
34,0
Resistance at 1000 Hz, ohm
33,4
34,2
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
202,2
236,1
The minimum value in band from 40 Hz to 15 kHz, ohm
32,5
33,7
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
14986,4
14986,4
The maximum value in band from 40 Hz to 15 kHz, ohm
36,0
36,9

Electric phase of AKG K 550 MKII headphone


Graphics setting view
Frequency band, Hz:
Range, degree:
Channel:




Table of measured characteristics
Electric phase AKG K 550 MKII
Channel
Left
Right
Average variation in phase response in band from 20 Hz to 20 kHz, degree
3,4
3,5
The minimum value in band from 20 Hz to 20 kHz at frequency, Hz
57,5
79,8
The minimum value in band from 20 Hz to 20 kHz, degree
-1,6
-0,7
The maximum value in band from 20 Hz to 20 kHz at frequency, Hz
19741,4
19741,4
The maximum value in band from 20 Hz to 20 kHz, degree
22,4
22,0

Frequency response of AKG K 550 MKII headphone when connected to amplifiers with constant output impedance


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:




Table of measured characteristics
Frequency response of headphone AKG K 550 MKII with amplifier with a constant impedance
Channel
Left
Right
Variation in FR from AMP 0 ohm in band 100 Hz to 10 kHz, dB
-5,46, +10,01
-7,34, +5,75
Variation in FR from AMP 10 ohm in band 100 Hz to 10 kHz, dB
-5,44, +10,01
-7,29, +5,75
Variation in FR from AMP 20 ohm in band 100 Hz to 10 kHz, dB
-5,42, +10,01
-7,26, +5,75
Variation in FR from AMP 50 ohm in band 100 Hz to 10 kHz, dB
-5,40, +10,01
-7,21, +5,75
Variation in FR from AMP 100 ohm in band 100 Hz to 10 kHz, dB
-5,38, +10,01
-7,18, +5,74
Variation in FR from AMP 300 ohm in band 100 Hz to 10 kHz, dB
-5,37, +10,00
-7,15, +5,74

Deviation of frequency response of AKG K 550 MKII headphone when connected to amplifiers with constant output impedance


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:




Table of measured characteristics
Variation in frequency response with amplifiers with constant output resistance from AKG K 550 MKII
Channel
Center/Summary
With amplifier impedance at 10 ohm in band 20 Hz to 20 kHz, dB
0,3
With amplifier impedance at 20 ohm in band 20 Hz to 20 kHz, dB
0,5
With amplifier impedance at 50 ohm in band 20 Hz to 20 kHz, dB
0,8
With amplifier impedance at 100 ohm in band 20 Hz to 20 kHz, dB
1,0
With amplifier impedance at 300 ohm in band 20 Hz to 20 kHz, dB
1,2

*Center channel is received by data averaging between the left and right channels


Frequency response of AKG K 550 MKII headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:




Table of measured characteristics
Frequency response with an amplifier with zero output resistance and raising of output resistance in low frequencies from AKG K 550 MKII
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-5,38, 10,10
-7,25, 5,83

Deviation of frequency response of AKG K 550 MKII headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies


Graphics setting view
Frequency band, Hz:
Range, dB:
Channel:




Table of measured characteristics
Variance of frequency response AKG K 550 MKII depending on the total output resistance of the amplifier with zero resistance and a rise of resistance at low frequencies
Variance frequency response at the frequency 20 Hz, dB
-4,8
Variance frequency response at the frequency 40 Hz, dB
-2,0
Variance frequency response at the frequency 80 Hz, dB
-0,8

Perception of headphone frequency response curves of equal loudness ISO 226-2009 of AKG K 550 MKII headphone


Graphics setting view
Channel:




Table of measured characteristics
Perception of headphone frequency response curves of equal loudness ISO 226-2009 from AKG K 550 MKII
Channel
Center/Summary
From level 48 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-7,6, +16,9
From level 36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-6,6, +13,8
From level 24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-5,7, +10,8
From level 12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-4,8, +7,7
From level 0 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-3,8, +8,1
From level -12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-3,0, +9,1
From level -24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-2,8, +10,0
From level -36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-4,1, +10,9

*Center channel is received by data averaging between the left and right channels


Impulse response of AKG K 550 MKII headphone


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Time, ms:
Channel:




Impulse Response Envelope (ETC - Energy Time Curve) of AKG K 550 MKII headphone


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Time, ms:
Range, dB:
Channel:




Step response of AKG K 550 MKII headphone


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Time, ms:
Channel:






Square wave of AKG K 550 MKII headphone

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