Tonewinner wholesale Hi-Fi bookshelf speakers passive sound system

1.Fashionable appearance

• Tonewinner Tongdi No. 7 has changed its classic red rosewood appearance style. It adopts a bright and pure black paint appearance. The appearance is dignified, exquisite, and it belongs to the eternal classic color. Whether it is in a modern decoration or a classical decoration environment, it will be It blends well into the environment and adds a touch of elegance to the room.

• The process of making the appearance of baking paint is very complicated and exquisite. First, you need to apply putty on the wooden board as the bottom layer of spray paint; after leveling the putty, wait for the putty to dry, polish and smooth it; then repeatedly spray the primer 3-5 times, after each spray, use water sandpaper and sand Cloth polishing; finally, spray 1-3 times of bright topcoat, and then use high temperature baking to cure the paint layer. In fact, if there is no mechanical damage, the surface of the box is as bright as a mirror, and it will still be as bright as new after 20 years. This is in line with Tonewinner's style of continuous refinement in process design.

• Tongdi No. 7 is made of 25mmMDF medium density fiberboard to ensure the best sound quality; no right-angled ridges are visible on the entire cabinet, and all edges are rounded. The speaker adopts a low-frequency reflection box design, and the front panel is designed with a chamfered bevel, which improves the appearance and has better acoustic characteristics, which helps to stabilize the acoustic structure, reduce sound coloration, and improve the sound quality of the speaker. Image aggregation ability.

• If you think Tongdi No. 7 wins by its appearance alone, then you underestimate this bookshelf box. Let's take a look at the configuration of the box.

2. Unit selection

• Treble: Using 28mm super large voice coil silk soft dome tweeter, with a non-resonant rear cavity design, the lower limit frequency of response is lower, so that the whole box can achieve a lower frequency division, thereby improving the sound quality of the mid-range and making the performance of the mid-range better. Clear, full and transparent, the high frequency upper limit reaches 22K, and the sound quality is beautiful, sweet and rich in overtones.

• Mid-bass: 6.5-inch large voice coil, long stroke, paper cone mid-bass unit, cast aluminum cone frame with extremely high rigidity, which can effectively reduce resonance, high-strength dual-magnet steel combined with light-weight paper cone , easy to achieve high efficiency and large dynamic characteristics, the woofer tone is warm, mellow, delicate and soft, and has low distortion and good transient.

3. Circuit Design

• Frequency divider: Babbitt filter and 2-frequency circuit design, the slope of the mid-high frequency part is 12dB, with extremely high transient response and minimal phase shift, the components are metallized resistors, oxygen-free copper coil inductance , and high-quality MKP capacitors. After sufficient testing, analysis, and adjustment through the computer, the frequency divider can connect the high and low frequency bands very well, and the phase distortion is very small. The frequency response curve of the crossover point at 3.5kHz is quite straight. The fluctuation in the effective frequency band is less than ±2dB. The low-end extension is very good. The sound texture is clear, the tone is mellow and warm, and the high frequency is delicate.

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