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Grado SR 225i

Total reports 1 from Grado SR 225i

General results Grado SR 225i



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 Grado SR 225i headphones based on the measured characteristics

Analysis and recommendations for Grado SR 225i based on the measured characteristics
Sources
(what the headphones to be connected)
Areas of using headphones Sensitivity Impedance The type of acoustic design: Total
111.32 dB/V SPL 33.74 Ohm Open  
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
★★★★★
3
★★★☆☆
5
★★★★★
4.3
★★★★☆
Office and home, where people should not hear the sound from the headphones 5
★★★★★
3
★★★☆☆
1
★☆☆☆☆
3.0
★★★☆☆
Street with active traffic 4
★★★★☆
2
★★☆☆☆
5
★★★★★
3.7
★★★☆☆
Metro (subway), pablic transport 3
★★★☆☆
1
★☆☆☆☆
1
★☆☆☆☆
1.7
★☆☆☆☆
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
★★★★★
5
★★★★★
5.0
★★★★★
Metro (subway), pablic transport 5
★★★★★
3
★★★☆☆
1
★☆☆☆☆
3.0
★★★☆☆
Recording a voice or instrument in the studio 5
★★★★★
4
★★★★☆
1
★☆☆☆☆
3.3
★★★☆☆
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
★★★★★
5
★★★★★
5.0
★★★★★
Office and home, where people should not hear the sound from the headphones 5
★★★★★
5
★★★★★
1
★☆☆☆☆
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

If in your situation, the Grado SR 225i 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.

Features and recommendations for Grado SR 225i

Analysis of acoustic design Grado SR 225i

The Grado SR 225i headphones are made with an acoustic design of an open type.

Due to the open type, the headphones do not have noise isolation - the surrounding people hear the music from the headphones well, and the listener can hear ambient sounds.

Headphones without noise isolation are well suited for home and studio in a quiet environment, as well as on the street with active traffic, allowing you to notice the danger in time.

Headphones without noise isolation are unsuitable for use in noisy public transport - due to external noise it is necessary to increase the volume level of reproduced music, which is harmful for hearing during long listening. Loud sound is unpleasant to passengers nearby. In a studio, while recording vocals or instruments by a microphone, the open headphones are likewise not suitable, because sound from the "minus" from the headphones will fall into the microphone.

Analysis of the sensitivity of Grado SR 225i headphones

The sensitivity of the Grado SR 225i headphones is 111.32 dB/V SPL by the voltage and 96.60 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 Grado SR 225i , an amplifier with a voltage level of at least -1.32 dBV at 34 Ohms is recommended for listening to music with a level of 90 dB SPL (without noise isolation). An amplifier with a level above 36.68 dBV is not desirable if the volume control is digital, not analog.

For noisy environments, an amplifier with a voltage level of at least 10.68 dBV at a load of 33.74 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 -1.32 dBV + 15 dB = 13.68 dBV).

Analysis of the impedance of Grado SR 225i headphones

The average resistance at the headphones Grado SR 225i is 33.74 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 25.46 mA in a given class of quality is desirable (preferably orientated to comparable class A) and 101.35 mA for loud.

Analysis of other measured characteristics for the Grado SR 225i

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

Total reports 1 from Grado SR 225i


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