Balance converter, one-way balanced input and two-way balanced selection output, volume control, heavy production, at all costs.
One audio input selection, two balanced output selection, Jensen JT-11P-HPC 10K: 10K re-engraved version of pt-36 permalloy transformer assembly, high-precision EIZZ 4x24 file 4 continuous voltage stepping volume potentiometer, after Nissan The ALPS band switch selects the signal output, which is convenient for users with two balanced power amplifiers. It can avoid the inconvenience and loss caused by frequent plugging and unplugging of the balance seat, and can also isolate the signal through the transformer to improve the sound quality and the overall sound system effect.
Can also be customized according to requirements, using 10K: 40K (2 times boost), 10K: 60K (2.5 times boost), 10k: 90K (3 times boost) signal transformer assembly.
Four characteristics of this machine:
One; choose one balanced audio source and two balanced post-level devices to choose to switch to use, there are common ground switch.
Two; wide frequency response, large inductance, fully balanced PT-36 10K: 10K permalloy transformer assembly, exceeding the US Jensen JT-11P-HPC 10K: 10K signal transformer.
Three; EIZZ 24-level fully balanced four-channel high-precision stepped volume potentiometer.
Four; pay attention to the wiring, the material is feverish, the sound source selection is smooth and no noise, and the whole machine is as quiet as the deep sea.
The effect of improving sound quality is noticeable immediately and the effect is excellent.
This machine can isolate and eliminate the digital sound of the digital sound source. The sound is pure and delicate, oily and lustrous, the middle and high trebles are soft and transparent, the details are rich, the bass is thick and powerful, and the elasticity is increased. It looks like a charm, which makes people never tire of listening.
The machine has two inputs and one output, and there are also two inputs and one output. If you need it, please leave a message and contact customer service.
The company specializes in the sales and production of electronic devices for decades, and has extensive experience in selecting and assembling the characteristics of components. The assembly welding is neat and reasonable.
Use materials at all costs: use Permalloy audio signal transformers. Double-layer double-sided epoxy board fixed. Swiss Trek balances male and female signal sockets, which are tightly connected and resistant to plugging and use. The German Leoni colorful oxygen-free copper signal line transmits signals losslessly, and the pure copper is neutral and soundless. Japan-made ALPS band switching switch, the finest product in the switch, with silver-plated internal contacts, no noise after switching on and off, is very quiet, ensuring high-fidelity signal transmission without distortion. Metal iron casing, thick aluminum knob, 4 aluminum legs, exquisite appearance and high eye-catching.
PT-3610K: 10K permalloy transformer is better than others due to improvements in materials and processes. The measured frequency response: 10Hz-49KHz attenuation -0.6db, 20Hz-47KHz attenuation -0.5db, far beyond this band The audible audio range of the human ear! The sound quality can be comparable to the American JENSEN transformer! The performance has surpassed the American JENSEN transformer.
The new PT-36 primary and secondary have ultra-high inductance, the average inductance is more than 3000H to more than 4000H, which is three to four times higher than the American JENSEN transformer. Leakage inductance and distributed capacitance are also almost the same as Ares cow. Leakage inductance and distributed capacitance are killers of high frequency, otherwise the high frequency cannot reach such high frequency as 47Khz -0.5db, and the low frequency is not to mention.
Light gold Φ38mm thick pure aluminum knob gold solid volume knob or high imitation wheat scene knob, not selected.
The wire has a skin effect, as described in detail below. Use silver-plated copper wire in the audio circuit. When the audio signal current passes through the silver-plated layer, it will increase with the change of frequency. The surface is concentrated, while the middle frequency and low frequency of the audio signal are routed through the inner layer of copper. The resistivity of silver and copper are different, and the barriers are different. The resistivity of silver is 1.65 × 10-8 (Ω m), the resistivity of copper is 1.75 × 10-8 (Ω m), silver resistivity is greater than copper resistivity, will cause The music signal is not synchronized, the high frequency is fast and the low frequency is slow. The sound is expressed in many high-frequency and bright and fast, while the low-mid frequency is slow and few, losing balance.
The German Leoni colorful oxygen-free copper signal wire and pure copper wire are as follows. The sound is neutral and non-staining. If buyers like copper-plated silver wire, they can also order according to requirements.
The use of EIZZ stepping volume potentiometer is a cheat sheet for Liangyin. Cost-effective selection is better than DACT Denmark 24-stepping potentiometer.
EIZZ 24-level fully balanced four-channel high-precision stepping volume potentiometer
The 24-level fully balanced four-layer high-precision stepping potentiometer potentiometer feels light and the progression is clear. Strictly measured and matched to make each note perfect and true to show. All aluminum shell, surface oxidation blackening treatment, with adjustable feel screw, light feel, immersion gold contacts, high-quality resistance, Teflon pin base, single crystal copper pin. The sound is first-class, and the transparency, density and stability have been greatly improved.
The resistance error of the left and right channels of the switch potentiometer is far less than 1%, and the signal distortion is much less than that of the common carbon film potentiometer. The reasons for linear distortion are detailed below.
The core transformer is improved by referring to the Jensen JT-11P-HPC 10K: 10K audio transformer winding process in the United States. Combined with the continuous testing in the experiment, it breaks through the bottle strength of the American Ares manufacturers. The frequency response width of PT-11 is 10Hz ～ 100KHz 0.2DB, completely surpassing the 20K-0.4db to 20Khz-0.2db parameters of the American Ares manufacturers and peers. It has the effect of surpassing the original God of War bull, high cost performance. The low frequency 10Hz frequency is attenuated by 0.2db, and the high frequency 100KHz frequency is attenuated by 0.2db. In the audible audio range, the curve is flat and almost a straight line, and the signal coupling is almost without distortion.
It is used in the sound system to move the whole body in one stroke. The purity of the source will be perfect.
Machine dimensions: 185 × 160 × 65mm and weight 3KG.
The sound of the machine tends to be stable and nice after using it for dozens or hundreds of hours.
Skin effect
When there is alternating current or alternating electromagnetic field in the conductor, the current inside the conductor is unevenly distributed, and the current is concentrated on the "skin" part of the conductor. , The current inside the conductor is actually smaller. As a result, the resistance of the conductor increases, and the power loss also increases. This phenomenon is called the skin effect.
In the circuit, the current density on a uniform wire cross-section is uniform. But when the signal current passes through the conductor wire, as the frequency increases, the current distribution on the cross section of the conductor is more and more concentrated on the surface of the conductor, so the small bulb connected to the conductor skin is smaller than the small bulb connected to the middle of the conductor To be brighter, this phenomenon is called the skin effect.
The reason for the nonlinear distortion of the carbon film potentiometer -------- The carbon in the ordinary equal-loud carbon film potentiometer is a non-metallic semiconductor element, which is located in the IVA group of the second period of the periodic table. Its chemical symbol is C, its atomic number is 6, the electronic configuration is [He] 2s22p2, carbon is a semiconductor, and a carbon film potentiometer is made by coating a layer of carbon film on a horseshoe-shaped paper rubber plate. The carbon film body is formed by coating carbon black, graphite, quartz and other materials on the surface of the substrate. The rivets are used to fix the copper (or iron feet) as the lead-out solder legs. The carbon film plate and the copper feet are two kinds of conductor materials , PN junction is formed between them. The PN junction is also formed between the sliding copper brush in the potentiometer and the carbon membrane plate. The principle of the PN junction type diode. Overcurrent will produce nonlinear distortion and affect the sound quality. All copper contacts, there is no problem of nonlinear distortion, and the fidelity of sound quality is greatly improved. Therefore, the reason why the high-end premium audio does not use carbon film potentiometers and uses stepping switch volume potentiometers.
