With the popularization of smart speakers, most users have gradually abandoned the more traditional bluetooth speakers, but are traditional bluetooth speakers dead? Everyone should have an intuitive feeling, that is, although smart speakers have integrated voice assistants, they will appear smarter after networking, but the sound quality is often not the first consideration for smart speakers, so smart speakers usually have insufficient bass sinking and high pitch There will be broken sound as soon as it is high. This time I was very fortunate to get the ABRAMTEK M8 bluetooth speaker. ABRAMTEK M8 has many patented technologies: suspended low-frequency resonance system, automatic low-frequency tracking, electronic turbine, wall-type airflow booster, which perfectly solves the low volume and low low frequency common in the digital speaker industry , Serious sound breaking and other problems. Let me share with you the review of this ABRAMTEK M8 bluetooth speaker.
01/ ABRAMTEK M8 speaker appearance
The front of the box is the spokesperson of ABRAMTEK: Mu Qiao. There are a lot of information on the cover, including the speaker model-M8, the SLOGAN language of “bluetooth boutique speaker that can sing”, and the selling points of the product: HiFi sound effects, TWS, DPAC decoding, 3D surround sound, and noise reduction processing.
The back of the box is much simpler, with only one rendering of ABRAMTEK M8.
The appearance of a speaker will directly affect the quality of sales. ABRAMTEK M8 chooses a retro style and a dark green color scheme of the forest system. Whether it is placed in the bedroom, living room, study, or out of the car, bicycle, square Nothing seems out of place. The surface of the fuselage adopts a baking paint process, which is delicate to the touch.
The four bronzing circular rotary + click knob buttons on the side of ABRAMTEK M8 are more nostalgic when paired with the retro body. In order to enable users to get started quickly, the operation logic of the buttons is marked above the four buttons. Among them are mode switching/bass adjustment, microphone reverberation knob/up and down song adjustment, on, off/volume knob.
There are four status indicators below the knob button to show the current status of the speaker: bluetooth mode, AUX mode, USB mode, and microphone mode.
In the interface area on the back of ABRAMTEK M8, you can see all the interfaces and buttons of ABRAMTEK M8, including reset button, microphone input, AUX IN, bluetooth code key, U disk socket, and Type-C charging interface.
From the appearance and size of ABRAMTEK M8, ABRAMTEK M8 should be a desktop speaker. At the same time, it is equipped with a leather handle for the convenience of carrying. When used outdoors, it can be hung to prevent the bottom of the speaker from being worn.
In addition, it is equipped with a wired microphone with a length of more than 2 meters and an optional wireless microphone, which is more convenient to use and free to karaoke.
02/ ABRAMTEK M8 speaker teardown
Next, we will disassemble ABRAMTEK M8 to see what materials will be inside this speaker. The first is the removal of the leather handle. The fixing nuts at both ends of the leather handle need to be unscrewed.
The handle is made of genuine leather, and the first layer of leather is used. This thin and dense head skin has good strength, elasticity and plasticity.
Then the cover is removed, and the cover needs to be slowly cut open with a thin sheet, and the other cover is also operated in the same way. When removing the metal cover, since the hot melt adhesive is relatively strong, it is best to use a hot air blower to melt the hot melt before removing it.
The two cover plates are made of iron and are relatively soft. Do not use excessive force when disassembling, otherwise the cover plates will bend.
After removing the cover, you can see the outside of the 2.25″ speaker.
At this time, you need to use a screwdriver to loosen the four corner screws.
Then use a thin sheet to cut the speaker fixing plate along the edge. The interface area on the other side also needs to be disassembled in this way.
Then gently pull out the speaker fixing plate. Before pulling this out, you need to remove the speaker fixing plate on the side of the interface area. Otherwise, the two speakers are connected to the same motherboard, and the cable is easily torn off.
The speaker is an ABRAMTEK custom low-frequency speaker with a rated power of 30W, which is designed to make up for the lack of bass of the Bose speaker. Because the Bose speaker has a hard bounce, the mid and high frequencies are strong, but the low frequency is insufficient. The customized mid-woofer bounces softly, so the low frequency is better. , The two together create a rich stereo effect.
The following speaker is the Bose speaker, the model is BE-DQ58N-00, and the rated power is 30W. Bose has always been known for its compactness, and what it really relies on is the volume flow speaker technology. Since the power of the low frequency speaker and the Bose speaker are both 30W, the power cord for ABRAMTEK M8 is thicker.
The ABRAMTEK M8 speaker has a built-in 5000mAh power battery, which is actually two 2500mAh 7.4V batteries connected in series and supports DC5V-19V charging (Tesla model x and mosdel s use the 5c power battery standard), and the instantaneous discharge capacity is as high as 60W, not only battery life Strong, and its charging speed is also very fast.
In order to solve the shielding situation of the all-metal body, ABRAMTEK M8 has specially customized antennas, while maintaining a horizontally opposed structure, and its bass effect should also be enhanced. The idea of horizontally opposed structure originated from horizontally opposed engines (engines of Porsche and Subaru). The advantage is to offset vibration, while ABRAMTEK M8 adopts horizontally opposed structure design to counteract the vibration of the fuselage and enhance low frequency under the action of air springs.
ABRAMTEK M8 speakers use ABRAMTEK’s largest voltage dynamic range capacitor to date, and support a charging voltage of 5V-20V.
The power amplifier is Texas Instruments TPI 3118 power amplifier IC. The function of the power amplifier is to amplify the weak signal of the signal source to drive the speaker to emit sound. It is the most expensive and best IC of the same power. TI TPI 3118 power amplifier IC has the characteristics of high fidelity, good transient, low distortion, current resistance, voltage resistance, stable operation and other power amplifier ICs.
In order to meet the needs of power and bass output, the ABRAMTEK M8 speaker also has 4 built-in high-power inductors. This inductor not only has good sealing and stability, but also can withstand large currents and has low DC resistance. This inductor is often used in dance speakers.
The bluetooth chip is MVsilicon bluetooth 5.0 chip. bluetooth 5.0 is also standard for TWS headsets, and has a built-in professional K song reverberation DSP. This is one of the reasons why ABRAMTEK M8 supports K song, so this time it also comes with a microphone. If you plug it into the microphone input interface, ABRAMTEK M8 will automatically recognize the input device. During the karaoke process, you can adjust the reverberation level to adapt to the clarity of the human voice in different situations.
ABRAMTEK M8 speaker sound quality
ABRAMTEK M8 uses MVsilicon bluetooth 5.0 chipset, whether it is connected to a mobile phone or an audio device, the connection is very stable and supports high-quality audio.
In terms of sound quality, the cheers and applause of the audience in the song “Hotel California”, as well as the singing of the singer and the sound of guitar playing, can be clearly distinguished, indicating that the bass performance of ABRAMTEK M8 is very good, reaching the treble. In part, the speaker performance is more balanced. At the same time, the noise reduction effect of ABRAMTEK M8 is also very good, even in a noisy environment, it does not affect listening to music at all.
《渡口》 as a trial music, ABRAMTEK M8 also performed very well in terms of bass. Among them, the foremost drums of the music can be clearly heard. The low frequency extension of the whole song is also good, and the sound field performance is very contagious.
03/ Personal opinion
On the whole, the ABRAMTEK M8 bluetooth speaker is not only a good-looking speaker, it has a retro design with a dark green color scheme, which allows it to be well integrated into different usage scenarios, and it is also a solid workmanship and full of materials. bluetooth speakers, customized low-frequency speakers and Bose speakers ensure superb full-range sound quality. TI TPI 3118 power amplifier IC has high fidelity, good transient, low distortion, current resistance, voltage resistance, stable operation, etc. The MVsilicon bluetooth 5.0 chip maintains The stability of the bluetooth connection is improved.
After nearly two weeks of in-depth experience, the sound quality of ABRAMTEK M8 bluetooth speakers is very good, and its portability, battery life, appearance design and other aspects are relatively satisfactory.