Sennheiser CX 150BT Review

Sennheiser CX 150BT Review

The Sennheiser CX 150BT wireless “flea” has recently joined the Sennheiser CX series of headphones. We check what they can do …

Budget headphones are nothing new for Sennheiser, although they are certainly a challenge for him. After all, such a recognized manufacturer is expected to do much more than a “no-name” company. In the case of the Sennheiser CX 150BT model – the cheapest representative of the CX series – the assumption was made to combine solidity, comfort, and high sound quality at a price for every budget. It remains to check if it has worked.

PROS:

  • Great sound
  • Comprehensive customization thanks to the app
  • Very good price

CONS:

  • Appropriate processing
  • Manageable equipment

Construction

The manufacturer did not provide too many details on the construction of the “50s”. However, it boasted Bluetooth 5.0 technology, support for AAC and SBC codecs, bandwidth, several other parameters, and … that was it. What transducers did he use? We only know their diameter (9.7mm) and type (dynamic). They are closed in tiny plastic barrel-shaped housings. What battery was used? Lithium Polymer, 3.7V / 100mAh. The battery life (10 hours with the SBC codec, 340 hours in standby mode) is not very impressive. Still, if we look at this value through the prism of the capacity and size of the battery dangling on the neckband cable connecting the left and right headphones, this result seems to be pretty good. As a consolation, we get a USB-C connector and a decent battery charging time: approx—1 hour 30 minutes.

Operating the Sennheiser CX 150BT is very easy. The three-button remote control located just below the right earpiece is used for this. With the two extreme buttons, you can adjust the volume (“+” and “-“), and with the middle one, you can turn on / off the headphones, operate the player, and talk (the remote control has a microphone). A small LED indicator located above the “+” button informs, among others, about the battery’s state of charge. Information on the operation of the CX 150BT will be displayed via the Smart Control application. Unfortunately, in the case of this model, it is the only thing that the “app” has to offer.

The equipment of the CX 150BT model is modest. It includes only four pairs of silicone inserts in various sizes and a very short USB-C → USB-A cable. The headphones are available in two universal colors: black and white.

Sound Quality

The Sennheiser CX 150BT exposes the tweeter range and upper midrange. This gives a sound that is lively, fresh, open, and rich in detail. However, the retail nature of the top suggests a much higher than the actual price range—both cymbals and, for example, a violin sound very convincing.

The midrange is clear and communicative, mainly used by locals and acoustic and electronic instruments. “Leaving” the Republic (TIDAL) sounded surprisingly full, tangible. However, the transparency of the CX 150BT is a double-edged sword, which was confirmed by the artificial treble and inflated bass on the remaster of the album “Yes! Yes!” Citizen GC (paradoxically, MASTER sounds worse than the HIFI version).

The bass is naturally quite shallow, but it makes up for it with its jumpiness, energy, and good control. It is quite fast and diverse. The condition for the appearance of a clear woofer base is, firstly, careful selection of silicone inserts, and secondly, the correct placement of the headphones in the ears. You can, and even should, place them in the ear a little deeper than usual, which is helped by the small size of the “barrels.” We won’t experience a wide, deep bass, but the rhythm and dynamics of low tones can be a pleasant surprise.

And it is the good dynamics and the lighting of high frequencies that results in an outstanding spatiality of the sound. Stereophony also cannot be a reason for criticism. As a result, the “sound-image” is expansive, stable, drawn with a thin but firm line, and the location of the performers on stage is easy to capture.

The Sennheiser CX 150BT will prove themselves where it is necessary to brighten the sound. Their greatest advantages are the ease of use and the precision, freshness, and vitality of the sound.

Sennheiser CX 150BT Review
Sennheiser CX 150BT Review

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