MENU
UP
TOP hor
TOP ver
CLOSE
UP
TOP
CLOSE

Manufacturers / TFZ

TFZ 1S (report for a newbie)

General results TFZ 1S

  • Sensitivity by voltage: 131.35 dB/V SPL
  • Sensitivity by power: 112.96 dB/mW SPL
  • Impedance: 14.50 Ohm
  • The type of acoustic design closed
  • Headphone: Low-impedance
  • Type of headphones: in-ear or tablet


This is a simplified report for non-professional users ("dummies"), poorly versed in the headphones characteristics and specialized graphs.

Information in this report presents in most simple and clear as possible. Interpretation of the data is simplified as much as possible and accordingly devoid of subtleties and nuances. This is sufficient for an overall assessment, but for a more complete and accurate presentation, the professional report should be studied.

By possible, the characteristics are accompanied by explanations to do reader possibility gradually master a more complex professional report.


For example when choosing a video card, many people do not understand the set of tables with the final data of the test packages. How to understand the relative difference in these figures? In most cases, the unprepared reader is satisfied with only the textual evaluation of the author, without delving into the figures. When the choice of a product is done thoroughly, then the reader gradually deepens into complex tables, mastering information from simple to complex. We made two separate reports: "simple" and "complex". A simple report with explanatory comments will allow you to self-study to gradually understand and professional report.

Analysis with recommendations for the TFZ 1S headphones based on the measured characteristics

Analysis and recommendations for TFZ 1S based on the measured characteristics
Sources
(what the headphones to be connected)
Areas of using headphones Sensitivity Impedance The type of acoustic design Total
131.35 dB/V SPL 14.50 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
★★★★★
5
★★★★★
1
★☆☆☆☆
3.7
★★★☆☆
Metro (subway), pablic transport 5
★★★★★
4
★★★★☆
5
★★★★★
4.7
★★★★☆
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 3
★★★☆☆
5
★★★★★
1
★☆☆☆☆
3.0
★★★☆☆
Metro (subway), pablic transport 5
★★★★★
5
★★★★★
5
★★★★★
5.0
★★★★★
Recording a voice or instrument in the studio 4
★★★★☆
5
★★★★★
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 1
★☆☆☆☆
5
★★★★★
1
★☆☆☆☆
2.3
★★☆☆☆
Office and home, where people should not hear the sound from the headphones 1
★☆☆☆☆
5
★★★★★
5
★★★★★
3.7
★★★☆☆


The table shows the most common variations of sound sources and the scope of use of AMPs and headphones bundles.

The compatibility rating is similar to car analysis based on its ground clearance - on which road the car will move optimal without evaluating the class of the car.

Detailed description formula of the table of headphones

Features and recommendations for TFZ 1S


Analysis of acoustic design TFZ 1S


The TFZ 1S 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 TFZ 1S headphones


The sensitivity of the TFZ 1S headphones is 131.35 dB/V SPL by the voltage and 112.96 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 TFZ 1S , an amplifier with a voltage level of at least -27.35 dBV at 14 Ohms is recommended for listening to music with a level of 90 dB SPL (without noise isolation). An amplifier with a level above 10.65 dBV is not desirable if the volume control is digital, not analog.

For noisy environments, an amplifier with a voltage level of at least -15.35 dBV at a load of 14.50 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 -27.35 dBV + 15 dB = -12.35 dBV).


Analysis of the impedance of TFZ 1S headphones


The average resistance at the headphones TFZ 1S is 14.50 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 2.96 mA in a given class of quality is desirable (preferably orientated to comparable class A) and 11.79 mA for loud.



If in your situation, the TFZ 1S headphones in the table do not have a high rating, you can choose more suitable headphone models in a special on-line selection for the selected parameters. If fully suited, then similarly you can see what other models may suit you.


For different purposes it is best to select individual headphones, and not to look for some universal headphones for all occasions. Unfortunately, some properties of headphones mutually exclude the use of headphones in different situations. True connoisseurs of quality sound use several pairs of headphones. Headphones are compact and do not take up much space, unlike speakers.



Frequency response

Your browser does not support Canvas







Sensitivity

Your browser does not support Canvas
Описание анализа графика в разработке
Амплитудно-частотная характеристика наушников (АЧХ/ frequency response) - это зависимость уровня звукового давления от частоты воспроизводимого гармонического сигнала на выходе наушников. АЧХ может строится как конкретному звуковому давлению от величины поданного на наушники сигнала с усилителя, так и относительно некого среднего значения по диапазону частот или относительно конкретной частоты. В графике чувствительности показано значение звукового давления при подачи уровня 1 Vrms (0 dBV), где значения в дБ SPL означают звуковое давление.

Параметр чувствительности отображает зависимость уровня «громкости» наушников от уровня поданного на наушники сигнала. Чем выше значение чувствительности, тем более громко будут играть наушники.

Чувствительность указывают или к напряжению, или к мощности.

Значение к напряжению (дБ/В SPL) на графике отражает сравнительную «громкость» наушников при подключению к усилителю без учета, сколько в конечном итоге энергии будет потрачено. Так как современные устройства в подавляющем большинстве используют цифровой регулятор громкости и ограниченный порог напряжения на выходе усилителя, то характеристика к напряжению наиболее важна для конечного пользователя, т.к. дает ответ о разнице в громкости между наушниками.

Вместо чувствительности к напряжению часто указывают значение чувствительности к мощности (дБ/мВт SPL). Чувствительность к мощности показывает КПД (коэффициент полезного действия) наушников по отношению к затраченной энергии и в современном мире портативных плееров и смартфонов - к расходу батареи. Чем выше чувствительность наушников к мощности, тем меньше расход энергии и дольше работает источник звука. Но при этом для значения выраженные к мощности сильно затрудняют возможность сравнения моделей наушников с разным сопротивлением между собой и эта характеристика неудобна для практического применения.

График показывает уровни звукового давления при воспроизведении синуса в каждом диапазоне частот.

Зная уровень напряжения на выходе источника, можно спрогнозировать максимальный уровень громкости с наушников.



Analysis of other measured characteristics for the TFZ 1S

We prepare automatic analysis with comments of other characteristics and graphs, such as:
  • Frequency response
  • A recommended volume level for listening the headphones (by curves of equal loudness ISO 226-2009)
  • Changing the frequency response of headphones from connecting to standard sources
Follow our news.


On-line comparison and selection services for TFZ 1S

Comparison the frequency response the TFZ 1S versus other models

Compare the sensitivity and impedance the TFZ 1S versus other models.

The automatic selection of the optimal AMP models from TFZ 1S from the measured power parameters of the amplifying part and the measured parameters of the headphones for different purpose of use.




it is a translation from the Russian language. Original text in Russian page.

You can help us with the correct translation into English. Thank You!




Share report

If you notice a typo or other inaccuracy, then select it and press Ctrl+Enter. This will accelerate the process of improving the reports.
Follow