AUDIO FEAST BLOG

FEATURED Posts

  1. FINEMET Push Pull ECC88-ECC33(6SN7GT) Line Amplifier
    13 Jul, 2019
    FINEMET Push Pull ECC88-ECC33(6SN7GT) Line Amplifier
    This FINEMET ECC88 - ECC33 (6SN7GT) push pull Line Amplifier design was published on Japanese audio magazine MJ 2019 August issue by Yasuo Iwamura. This line amplifier was inspired from his previous triode strapped 6V6GT push pull amplifier.  ECC88 with  FINEMET FM-5K-5KL provide low impedance drive for ECC33(6SN7GT) and output is also FINEMET FM-20K-600CT. He mentioned about great low distortion results with open loop circuit.
  2. FINEMET FM-6WS 45 Loftin White SET
    08 Jun, 2019
    FINEMET FM-6WS 45 Loftin White SET
    This FINEMET 6267/EF86 - 45 Loftin White SET amplifier was designed by Mr. Yasuo Iwamura and published Japanese Audio Magazine MJ 2018 April issue.  This amplifier use small FINEMET output transformer. In other words, it can be a great budget set up, Especially with high efficiency speaker such as AFT model 7. This amplifier use FINEMET output transformer FM-6WS.
  3. FINEMET FM-10P Triode Strapped 6V6GT Push-Pull Amplifier
    27 May, 2019
    FINEMET FM-10P Triode Strapped 6V6GT Push-Pull Amplifier
    Triode Strapped 6V6GT Push-Pull Amplifier with FINEMET Input and Output transformers. This Amplifier design was published on Japanese audio magazine MJ 2019 May issue by Yasuo Iwamura. Baby size push-pull amplifier can achieve the best cost performance! The input Transformers are our new FM-5K5KL. The output Transformer is FM10P. The power supply Chokes are FMC1013HW. FINEMET output transformer has much smaller coloration compared to traditional core materials. Paring of FINEMET power
  4. FINEMET 3 way filter for Western Electric 418A, 555, and 597A
    20 May, 2019
    FINEMET 3 way filter for Western Electric 418A, 555, and 597A
    This design is from Japanese audio magazine, Radio Gijyutsu(Radio Technology), 2008 Feb. by Tadaatsu Atarashi. His design uses our FINEMET FM-ATSP1, speaker attenuator choke and FM-NW2,   GIP 597A (16 ohm) uses 4uF capacitor and FM-ATSP1 at -7dB tap with 20 ohm impedance compensation resistor. WE555 use a simple high pass filer, not a bad pass filter which is 20uF capacitor  and FM-ATSP1 at -7dB tap with 20 ohm impedance compensation resistor. GIP 4181A (16 ohm) uses FM-NW2 at 5mH tap. FM-NW2

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