Measurement's report Ultrasone PRO 750 test and graphs - Reference Audio Analyzer

Reports / Ultrasone / PRO 750 - report for a pro

Ultrasone PRO 750 (report for a pro)



Test report - general data of Ultrasone PRO 750 headphone

Frequency response, Impedance, Frequency response with standard AMPs


Graphics setting view
Range, dB:

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


General results
General results Ultrasone PRO 750
Channel
Center/Summary
Sensitivity average in band from 100 Hz to 10 kHz, dB/V
112,6
Impedance average in band from 40 Hz to 15 kHz, ohm
42,2
For 94,0 dB SPL need, VRMS
0,118
For 94,0 dB SPL need, mW
0,327

The table shows a most important technical characteristics of Ultrasone PRO 750

*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 HDM1



Sensitivity of Ultrasone PRO 750 headphone


Graphics setting view
Channel:




Table of measured characteristics
Sensitivity Ultrasone PRO 750
Channel
Left
Right
Sensitivity average in band from 100 Hz to 10 kHz, dB/V
112,6
112,5
Sensitivity at 500 Hz at 1 V, dB
113,5
114,5
Sensitivity at 500 Hz at 1 mW, dB
99,6
100,6
Sensitivity at 1000 Hz at 1 V, dB
112,8
114,2
Sensitivity at 1000 Hz at 1 mW, dB
98,8
100,2

The sensitivity was calculated by data from the measuring stand HDM1


Frequency response of Ultrasone PRO 750 headphone


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response Ultrasone PRO 750
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-8,82, 8,71
-8,13, 8,75

Impedance of Ultrasone PRO 750 headphone


Graphics setting view
Channel:




Table of measured characteristics
Impedance Ultrasone PRO 750
Channel
Left
Right
Impedance average in band from 40 Hz to 15 kHz, ohm
42,2
42,2
Resistance at 500 Hz, ohm
40,5
40,5
Resistance at 1000 Hz, ohm
40,3
40,3
The minimum value in band from 40 Hz to 15 kHz at frequency, Hz
659,6
659,6
The minimum value in band from 40 Hz to 15 kHz, ohm
40,2
40,2
The maximum value in band from 40 Hz to 15 kHz at frequency, Hz
42,0
42,0
The maximum value in band from 40 Hz to 15 kHz, ohm
48,4
48,4

Electric phase of Ultrasone PRO 750 headphone


Graphics setting view
Range, degree:
Channel:




Table of measured characteristics
Electric phase Ultrasone PRO 750
Channel
Left
Right
Average variation in phase response in band from 20 Hz to 20 kHz, degree
1,5
1,5
The minimum value in band from 20 Hz to 20 kHz at frequency, Hz
124,7
124,7
The minimum value in band from 20 Hz to 20 kHz, degree
-4,6
-4,6
The maximum value in band from 20 Hz to 20 kHz at frequency, Hz
19682,2
19682,2
The maximum value in band from 20 Hz to 20 kHz, degree
15,7
15,7

Frequency response of Ultrasone PRO 750 headphone when connected to amplifiers with constant output impedance


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Frequency response of headphone Ultrasone PRO 750 with amplifier with a constant impedance
Channel
Left
Right
Variation in FR from AMP 0 ohm in band 100 Hz to 10 kHz, dB
-8,82, +8,71
-8,13, +8,75
Variation in FR from AMP 10 ohm in band 100 Hz to 10 kHz, dB
-8,83, +8,71
-8,13, +8,74
Variation in FR from AMP 20 ohm in band 100 Hz to 10 kHz, dB
-8,83, +8,72
-8,14, +8,73
Variation in FR from AMP 50 ohm in band 100 Hz to 10 kHz, dB
-8,83, +8,72
-8,14, +8,73
Variation in FR from AMP 100 ohm in band 100 Hz to 10 kHz, dB
-8,84, +8,73
-8,14, +8,72
Variation in FR from AMP 300 ohm in band 100 Hz to 10 kHz, dB
-8,84, +8,73
-8,15, +8,71

Deviation of frequency response of Ultrasone PRO 750 headphone when connected to amplifiers with constant output impedance


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Variation in frequency response with amplifiers with constant output resistance from Ultrasone PRO 750
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
0,9
With amplifier impedance at 100 ohm in band 20 Hz to 20 kHz, dB
1,1
With amplifier impedance at 300 ohm in band 20 Hz to 20 kHz, dB
1,4

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


Frequency response of Ultrasone PRO 750 headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies


Graphics setting view
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 Ultrasone PRO 750
Channel
Left
Right
Variation in frequency response in band from 100 Hz to 10 kHz, dB
-8,87, 8,77
-8,18, 8,81

Deviation of frequency response of Ultrasone PRO 750 headphone when connected to an amplifier with zero output impedance and raising of output impedanse in low frequencies


Graphics setting view
Range, dB:
Channel:




Table of measured characteristics
Variance of frequency response Ultrasone PRO 750 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
-4,0
Variance frequency response at the frequency 40 Hz, dB
-1,5
Variance frequency response at the frequency 80 Hz, dB
-0,6

Perception of headphone frequency response curves of equal loudness ISO 226-2009 of Ultrasone PRO 750 headphone


Graphics setting view
Channel:




Table of measured characteristics
Perception of headphone frequency response curves of equal loudness ISO 226-2009 from Ultrasone PRO 750
Channel
Center/Summary
From level 48 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-6,4, +9,5
From level 36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-5,3, +6,4
From level 24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-6,1, +6,9
From level 12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-7,3, +7,8
From level 0 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-8,5, +8,7
From level -12 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-9,7, +9,5
From level -24 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-10,8, +10,4
From level -36 dB at 72 dB SPL in band 100 Hz to 10 kHz, dB
-11,9, +11,2

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



On-line comparison and selection services for Ultrasone PRO 750

Comparison of basic characteristics: Sensitivity, Impedance.

Determination of the required voltage level from a headphone amplifier for PRO 750 and comparison with other models A additional analytics of compatibility with specific amplifiers.

The automatic selection of the optimal AMP models from PRO 750.


Close

Measurements of Ultrasone PRO 750 were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Ultrasone PRO 750 test was conducted as a black box test, without regard to cost and prestige. This is the basic principle for making measurements, measurement reports and developing tests in RAA.




Kuznetsov Roman
Founder of RAA



Known by the nickname romanrex
Аuthor of articles iXBT.com



Information for Authors. You can freely use the graphics in your articles with a link to us.



Ultrasone PRO 750 is available in reports and services. You are in a professional report.

Information for all

Versus of characteristics
Information for professionals

Comparison of on-line graphs






Original text in Russian page. Translation page is not yet ready

You can help with translation via the: forum, facebook and feedback.

 

Comments

No comments to Ultrasone PRO 750
Commentary view:





Want to leave a comment or ask a question? Register now or log in