Shure SRH750DJ - Test report a newbie-dummies Reference Audio Analyzer

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Reports / Shure / SRH750DJ / report for a newbie

Shure SRH750DJ (report for a newbie)

General results Shure SRH750DJ

  • Sensitivity F.A.Q. by voltage: 112.28 dB/V SPL
  • Sensitivity F.A.Q. by power: 98.29 dB/mW SPL
  • Average impedance : 39.96 ohm
  • The type of acoustic design: Closed
  • Headphone: Low-impedance
  • Type of headphones: Over-ear

Analysis with recommendations for Shure SRH750DJ headphones based on the measured characteristics

Analysis and recommendations for Shure SRH750DJ based on the measured characteristics
Sources
(to which the headphones will be connected)
Areas of using headphones Sensitivity Impedance The type of acoustic design Total
112.28 dB/V SPL 39.96 ohm Closed  
Low-power sources -6dBV/15dB(mA):

a smartphone
a player
a tablet
Examples
Home or studio, where sound from the headphones does not bother anyone 5
★★★★★
5
★★★★★
1
★☆☆☆☆
3.7
★★★☆☆
Office and home, where people should not hear the sound from the headphones 5
★★★★★
5
★★★★★
5
★★★★★
5.0
★★★★★
Street with active traffic 5
★★★★★
4
★★★★☆
1
★☆☆☆☆
3.3
★★★☆☆
Metro (subway), public transport 4
★★★★☆
3
★★★☆☆
5
★★★★★
4.0
★★★★☆
Mid-power sources 6dBV/27dB(mA):
a computer with sound card
a Hi-Fi player
a portable amplifier
a mixer console
Examples
Home or studio, where sound from the headphones does not bother anyone 5
★★★★★
5
★★★★★
1
★☆☆☆☆
3.7
★★★☆☆
Metro (subway), public transport 5
★★★★★
5
★★★★★
5
★★★★★
5.0
★★★★★
Recording a voice or instrument in the studio 5
★★★★★
5
★★★★★
5
★★★★★
5.0
★★★★★
Hi-power sources 18dBV:

a home system with a headphone amplifier
Examples
Home or studio, where sound from the headphones does not bother anyone 4
★★★★☆
5
★★★★★
1
★☆☆☆☆
3.3
★★★☆☆
Office and home, where people should not hear the sound from the headphones 4
★★★★☆
5
★★★★★
5
★★★★★
4.7
★★★★☆


Analysis of acoustic design Shure SRH750DJ

The Shure SRH750DJ headphones are made with closed-type acoustic design.

Due to the closed type the headphones have passive noise isolation and for the surrounding public the headphones play much quiet than for the listener. External sounds for the listener is on the same quiet level.

Headphones with noise isolation are good for home, when you need not to disturb others while listening to music. It's good in a noisy office, allowing you not to be distracted. In noisy transport playing music in such headphones is more safe for hearing, because due to noise isolation it is possible to listen to music at an average or quiet volume. In the studio, when recording vocals or instruments on a microphone, the closed headphones fit best; Sound from the "minus" of the headphones will not get into the microphone.

Headphones with noise isolation are dangerous to use on the street with active traffic.

Analysis of the sensitivity of Shure SRH750DJ headphones


The sensitivity of the Shure SRH750DJ headphones is 112.28 dB/V SPL by the voltage and 98.29 dB/mW SPL by the power. The sensitivity by voltage reflects the relative "loudness" of the headphones among others - the higher is the value, the louder are the headphones. The sensitivity by power reflects the efficiency of the headphones. High sensitivity of the headphones means less energy need from the source (for portable devices - less power from the battery).

Depending on the sensitivity, headphones are best to use with sources of optimum power. If the source is too powerful, then there is a high probability of constantly hearing background noise. If source power is weak, there will be insufficient volume level.

In a quiet environment for the Shure SRH750DJ, an amplifier with a voltage level of at least -8.28 dBV at 40 Ohms is recommended for listening to music with a level of 90 dB SPL (without noise isolation). An amplifier with a level above 29.72 dBV is not desirable if the volume control is digital, not analog.

For noisy environments, an amplifier with a voltage level of at least 3.72 dBV at a load of 39.96 ohms is desirable.


If you want to listen to music at a different volume level, you just need to add or subtract a change in dB to 90 dB SPL (for example, for a desired level of 105 dB SPL, add 15 dB and the minimum voltage level for the amplifier is -8.28 dBV + 15 dB = 6.72 dBV).


Analysis of the impedance of Shure SRH750DJ headphones

The average resistance at the headphones Shure SRH750DJ is 39.96 Ohm.

The resistance affects the amount of current that the amplifier should give to the headphones. If the current is not enough, the sound quality will deteriorate, beginning with harsh in the sound and ending with a crackling. In most cases, at low current values, the amplifiers operate in comparable quality to class A, and as the current level rises, the quality decreases toward AB, B, and the clipping zone.

Imagine that you have a water tank, which gradually fills with water. The voltage from the amplifier this is the pressure with which the pump draws water from the reservoir. If the inflow of water in the tank is lower than the volume that the pump pumps out, then at the pump outlet we collect water and "bubbles". Similarly will be with the sound from the headphones, which are lacked the current from the amplifier.

For a quiet environment, an amplifier with an output current level of at least 9.65 mA in a given class of quality is desirable (preferably orientated to comparable class A) and 38.42 mA for loud.



On-line comparison and selection services for Shure SRH750DJ

Comparison the frequency response.
The Shure SRH750DJ was tested for a long time at the stands of the last generation and does not participate in comparison. If possible, we will re-test the Shure SRH750DJ on modern stands.
Compare the frequency response of a bundle of headphones and amplifiers.
The Shure SRH750DJ was tested for a long time at the stands of the last generation and does not participate in comparison. If possible, we will re-test the Shure SRH750DJ on modern stands.

Compare the sensitivity and impedance Shure SRH750DJ versus other models.

The automatic selection of the optimal AMP models from Shure SRH750DJ from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.

Сравнение АЧХ и звукового давления Shure SRH750DJ в зависимости от подаваемого напряжения и импеданса усилителя.
Close

Measurements of Shure SRH750DJ were carried out by Roman Kuznetsov on the hardware-software complex RAA.

The Shure SRH750DJ 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




Shure SRH750DJ is available in reports and services. You are in a simple report.

Service and suite of tests

Information for all

Comparison of on-line graphs

Information for professionals

report for a pro

Comparison of on-line graphs




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