Isolation power amplifier impedance tuning transformer, it can make your stone machine output into a tube with the charm.
This product is specially produced for transistor/digital power amplifier matching speakers. It is passively designed and can be used without plugging in. It has good matching and avoids the impact of the horn's back electromotive force on the amplifier, thereby reducing various distortions, and making the sound of the transistor amplifier to the tube The tone is close. It can increase the softness and delicacy of the mid and high frequencies, enhance the sense of volume in the mid and low frequencies, and the cohesion and flexibility of the low frequencies, expand the sound field and analysis, and significantly improve the musical expression. It has obvious polishing effect on the change of timbre, with a strong resemblance, the effect is immediate, and the system upgrades and enhances the effect is another weapon.
The signal passes through the hysteresis curve of the iron core to soften the tone of the transistor power amplifier. A good transistor power amplifier is not lost to the tube. The famous American Mai Jingtu transistor power amplifier uses an output transformer.
In addition, this transformer also has a good protective effect on the speaker, even if the power amplifier is broken and has a DC output, it will not burn the speaker.
In short, some systems with rough and straightforward sound will receive a "beautification" with half the effort after using this "cow". It is also a shortcut method for sound correction. Those who are interested may wish to try it.
Brand: Luge Model: E48x35 64-4/8/16
Technical specifications:
Impedance: 64Ω: 4Ω/8Ω/16Ω
Frequency response: 30Hz-95KHz (-3dB)
Input impedance: 64Ω
Output impedance: 4Ω/8Ω/16Ω
Rated power: 3-5W
Peak power: 10-15W
It is suitable for transistor machine OTL OCL BTL or digital power amplifier.
Disadvantages: The output power is about 3 times lower than the input power, which is suitable for low-power and small audio systems, but these shortcomings are insignificant for the advantages. In today's society, more people like to drink high-end and tasteful small cups of Kung Fu tea than large bowls of thirst quenching tea. many.
Transformer introduction ---------64 ohms: 4-8-16 ohm transistor single-ended output transformer power 3.5W, quite courageous TDA2003 LM1875, etc.
See introduction
Adopt high magnetic flux Z11 annealing four-hole silicon steel sheet EI48 iron core with a thickness of 35mm, each sheet thickness of 0.35mm, high-quality oxygen-free copper enameled wire winding. outer. The primary impedance of the input terminal is 64 ohms, and the secondary output has three types: 4Ω, 8Ω and 16Ω.
Transformer parameters:
Rated power: 3.5W 20Hz test
Primary impedance: 64Ω Secondary impedance: 4Ω, 8Ω, 16Ω
Copper resistance: about 5.4Ω for primary and 0.3Ω for secondary
Inductance: about 1.7H for the primary and about 200mH for the secondary 100HZ test
Primary overcurrent 2A
Frequency response: 30HZ to 95KHZ attenuation -3DB, qualified fans can test by themselves after buying it back.
Weight: 0.56KG/piece.
Test Equipment:
U.S. semi-LM1875 OCL amplifier output
Signal generator: Japan LEADER LAG-120A
Level meter: Japan KENEOOD VT-186
Oscilloscope: Japan KENEOOD CS-5175 100MHz
The inductance value will be different due to different test frequency points, the inductance is large at low frequency, and small inductance at high frequency. This product is subject to the 100HZ frequency point test of VICTOR Shengli 4090B desktop digital precision electric bridge, and it can be verified by itself if there is an instrument.
If measured with a portable digital inductance meter, the inductance value will be much larger than that measured by the bridge.
