Mediocre sound damping rather than volume limit

Mediocre sound damping rather than volume limit

JVC HA-KD5-YE children Stereo headphones yellow (Electronics)

Customer Review

Today received the headphones, just unpacked (wg is the package a little hard) and tried:
First impression: He plays very quietly and has little bass and treble.
Then the volume limit tested: With increasing volume of the player, the listener is also louder, a limitation of the listener does not exist. Of course, every player has to distort its limit where it starts and then not getting louder. But the handset itself limited not there.
I had a sneaking suspicion therefore resorted directly to the ohmmeter and the two shells measured: The 360 ​​ohm! That's quite a high resistance for a Headphones and my suspicion has hardens. So screwed one side, goes well, take off the ear cushion.
And what's in there? A resistor in series with the Kopfhöhrerkapsel. The resistor has 330 ohm, the capsule itself 30 ohms. The voltage at the capsule is thus reduced to 1/12 of the input voltage and which protects the hearing of the child.

Technically this handset does not contain a volume limit but a damping. A limitation would have no influence on the volume until it exceeds a certain value. The damping reduces at high and at low volumes.

In practice, this means: Normal volume is achieved in the vicinity of the maximum volume of the player. Depending on the version of the player and abgespieltem material is distorted then more or less. And quiet passages (eg in radio plays) are often barely understand. And bass like heights suffer. A corresponding player assuming, a very high (harmful) volume can be achieved.

The stability of the product seems OK, the cable possibly a little weak but you can exchange them at a pinch (if you have spare and soldering as screws can). The realization of the "Volume Limit" I think but technically ill. Everyone the something is good enough to work for a few cents can also get two 330 ohm resistors and solder in a few peiswerte headphones or installing the resistors in an adapter plug.

Price-performance I step wg the weak technical implementation as a standard. For EUR 15 instead of EUR 20 that could still go through.

The bottom line is a product that I will not buy it again.

Great protein bread! Rank: 5/5
January 19
Very well ... 41 Rank: 4/5
August 27
Not bad but caution. Rank: 4/5
December 17
disappointed 1147 Rank: 2/5
August 21
lyrics ?? Rank: 4/5
November 26

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