AKG K 181 DJ
HeadphonesOff
On
HeadphonesOff
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Reports / AKG / K 181 DJ / Off / report for a newbie

AKG K 181 DJ: Off (report for a newbie)

General results AKG K 181 DJ Off

  • Sensitivity F.A.Q. by voltage: 102.46 dB/V SPL
  • Sensitivity F.A.Q. by power: 88.70 dB/mW SPL
  • Average impedance : 42.07 ohm
  • The type of acoustic design: Closed
  • Headphone: Mid-impedance
  • Type of headphones: Over-ear

Analysis with recommendations for AKG K 181 DJ Off headphones based on the measured characteristics

Analysis and recommendations for AKG K 181 DJ Off based on the measured characteristics
Sources
(what the headphones to be connected)
Areas of using headphones Sensitivity Impedance The type of acoustic design Total
102.46 dB/V SPL 42.07 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 4
★★★★☆
3
★★★☆☆
1
★☆☆☆☆
2.7
★★☆☆☆
Office and home, where people should not hear the sound from the headphones 4
★★★★☆
3
★★★☆☆
5
★★★★★
4.0
★★★★☆
Street with active traffic 3
★★★☆☆
2
★★☆☆☆
1
★☆☆☆☆
2.0
★★☆☆☆
Metro (subway), public transport 2
★★☆☆☆
1
★☆☆☆☆
5
★★★★★
2.7
★★☆☆☆
Mid-power sources 6dBV/27dB(mA):
a computer with sound card
a Hi-Fi player
a portable amplifier
a mixing console
Examples
Home or studio, where sound from the headphones does not bother anyone 5
★★★★★
5
★★★★★
1
★☆☆☆☆
3.7
★★★☆☆
Metro (subway), public transport 4
★★★★☆
3
★★★☆☆
5
★★★★★
4.0
★★★★☆
Recording a voice or instrument in the studio 5
★★★★★
4
★★★★☆
5
★★★★★
4.7
★★★★☆
Hi-power sources 18dBV:

a home system with a headphone amplifier
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
★★★★★


Analysis of acoustic design AKG K 181 DJ Off

The AKG K 181 DJ Off 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 AKG K 181 DJ Off headphones


The sensitivity of the AKG K 181 DJ Off headphones is 102.46 dB/V SPL by the voltage and 88.70 dB/mW SPL by the power. The sensitivity by voltage reflects the relative "loudness" of the headphones among others - the higher the value, so the headphones are louder. 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 battery power).

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 AKG K 181 DJ Off , an amplifier with a voltage level of at least 1.54 dBV at 42 Ohms is recommended for listening to music with a level of 90 dB SPL (without noise isolation). An amplifier with a level above 39.54 dBV is not desirable if the volume control is digital, not analog.

For noisy environments, an amplifier with a voltage level of at least 13.54 dBV at a load of 42.07 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 1.54 dBV + 15 dB = 16.54 dBV).


Analysis of the impedance of AKG K 181 DJ Off headphones

The average resistance at the headphones AKG K 181 DJ Off is 42.07 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 banal rattling. 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 becomes filled with water. The voltage at the amplifier, this pressure, with which the pump pumped 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, with the sound from the headphones, which lacked current from the amplifier.

For a quiet environment, an amplifier with an output current level of at least 28.39 mA in a given class of quality is desirable (preferably orientated to comparable class A) and 113.02 mA for loud.



Analysis of other measured characteristics for AKG K 181 DJ Off

We prepare automatic analysis with comments of other characteristics and graphs, such as: Follow our news.


On-line comparison and selection services for AKG K 181 DJ Off

Comparison the frequency response.
The AKG K 181 DJ Off 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 AKG K 181 DJ Off on modern stands.
Compare the frequency response of a bundle of headphones and amplifiers.
The AKG K 181 DJ Off 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 AKG K 181 DJ Off on modern stands.

Compare the sensitivity and impedance AKG K 181 DJ Off versus other models.

The automatic selection of the optimal AMP models from AKG K 181 DJ Off 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 AKG K 181 DJ Off в зависимости от подаваемого напряжения и импеданса усилителя.

Измерения AKG K 181 DJ Off проведены Романом Кузнецовым на программно-аппаратном комплексе RAA.

Тест AKG K 181 DJ Off проведен как черного ящика, без учета стоимости и престижа. Это главный принцип измерений и разработки тестов в RAA.

Считаю, что важно делать не абсолютную оценку устройства, а совокупную оценку при совместной работе сусилителем источника и учетом внешних факторов. Это позволяет эффективно раскрывать потенциал всей связки устройств или делать более оптимальный подбор компонентов.




Kuznetsov Roman
Founder of RAA



Known by the nickname romanrex
Аuthor of articles iXBT.com



Last news




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