How to DIY your full range labyrinth speakers
How to DIY your full range labyrinth speakers

Now, the 2 to 4 inches oak full range labyrinth speaker cabinet hit the market now. You just need to select your full range unit speaker unit and install them in the cabinet only, so easy!

IWISTAO 2 to 4 inches oak full range labyrinth speaker cabinet !

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How to DIY Your Speaker Interconnection Cable
How to DIY Your Speaker Interconnection Cable

Select your need cable and define its cross section and length.If there is a large current from your power amplifier to the speaker, you will select related high cross section of the cable.Here, we make a speaker interconnection cables for a 10W speaker, so its cross section is smaller.

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Vacuum Tube Selection
Vacuum Tube Selection

When selecting an electronic tube, we should determine the appropriate tube type according to the characteristics and requirements of the specific application circuit firstly. Secondly, it should be ensured that parameters of the selected tube meet the requirements of the application circuit, especially the limit parameters must have sufficient margin.

6N Series Vacuum Tubes

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IWISTAO FU50 Small 300B 2x8W Vacuum Tube Amplifier Finished Board Kit Single-ended Class A DIY Free Tuning
IWISTAO FU50 Small 300B 2x8W Vacuum Tube Amplifier Finish...

Vacuum tube FU50 is known as the small 300B and close to tube 300B, but the price is much lower than tube 300B, its treble is fine, extension is very good, overtone is excellent, and the vocals are very cordial. Listening to the original sound of the Dream of Red Mansions can feel that it is super strong; listening to symphony and string music is very good, violin is very delicate, more worth playing than the tube EL34. 

 

IWISTAO FU50 Vacuum Tube Amplifier 2x8W Single-ended Class A PCBA Finished Board Small 300B DIY

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What is B, P, G for tube amplifier output transformer?
What is B, P, G for tube amplifier output transformer?

The primary of tube amplifier output transformer generally has two, three and five connection terminals.

 

The circuits of single tube type class A amplifier Among them include:

  1. The primary is 2 connection terminals, P is connected to the screen, B is connected to B+ (that is, DC high voltage power supply)
  2. The primary is 3 connection terminals, P is connected to the screen, G is a Ultra-linear tap (connected to the second gate of the power amplified tube such as 6P6P, 6P1, 6P14, etc.), B is connected to B+ (that is, DC high-voltage power supply)

IWISTAO tube output transformer

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Vidie Demo: HIFI CD Player Plus IWISTAO HIFI MINI Tube Hybrid Amplifier Bluetooth 4.0
Vidie Demo: HIFI CD Player Plus IWISTAO HIFI MINI Tube Hy...

This is a HIFI CD player, and product quality is reliable and very stable, durable, good effect. As a high quality CD player, the key parts are movement and decoding. The CD player adopted So ny movement. And, its decoding part adopted DAC CS4398 with 192kHz / 24Bit.

HIFI CD Player with DAC CS4398 192KHz / 24Bit High Quality Movement Upgrade Version Black or Withe Panel 220V  Audio

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Video Demo: 2x25W 845 Vacuum Tube Amplifier 300B Drive 845 Single-end Class A 6SN7 Preamp Scaffolding
Video Demo: 2x25W 845 Vacuum Tube Amplifier 300B Drive 84...

The amplifier is adhering to the consistent concept, simple and atmospheric overall design, stable and nice sound optimized circuit to improve the performance of r this 845 amplifier. The direct thermal triode 845 amplifier can express the natural exquisiteness of vocal and string music, and it can also be calmly and magnificently when it is large dynamic. Even for those hard-to-push speakers, it can drive them well.

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Video Demo: IWISTAO Tube Buffer with Voltage Amplified Tube 6J1 Pre-amplifier Adopt Processing Cathode Output Circuit
Video Demo: IWISTAO Tube Buffer with Voltage Amplified Tu...

It is a tube buffer for those digital signal like as CD, MP3 player, and your smart phone, that adopt 2 pcs Beijing thumb tube 6J1 which is used on more famous tube preamplifier, and designed as HIFI cathode output circuit. And those component also adopt HIFI grade one.

IWISTAO Tube Buffer Amplifier with Voltage Amplified Tube 6J1 Pre-amplifier Adopt Processing Cathode Output Circuit

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Relationship Between Audio System &  Hearing Sense
Relationship Between Audio System & Hearing Sense

In general, sound frequency of human sense of hearing is from 20Hz to 20 KHz including the human voice spectrum range 150Hz ~ 4 KHz, and various musical spectrums range 40Hz ~ 18 kHz. Distribution of average spectral energy is that bass and bass is maximum, mid-treble is secondly, and treble is the least, and the human voice energy is concentrated in frequency range of 200Hz ~ 3.5 KHz. Peak of these random signal amplitudes are higher than of its average value about 10 ~ 15dB.

IWISTAO HIFI MINI Tube Hybrid Amplifier Wireless Bluetooth 4.0 6N1 Preamp Power Stage 2x28 W APT-X Desktop Audio 115/230V

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IWISTAO HIFI Pure Tube Earphone Amplifier with Black Voice 6N3 SRPP Drive 6N5P 32- 600 Ohms
IWISTAO HIFI Pure Tube Earphone Amplifier with Black Voic...

The sound is grand and magnificent, open and wide; performance of each frequency point perfect! In particular, when the use of imported tube like as RCA6080 (Default as Beijing 6N5P tube), more delicate high-frequency, low frequency more powerful!

IWISTAO HIFI Pure Tube Earphone Amplifier 6N3 SRPP Drive 6N5P 32- 600 Ohms Output Power 1W Stereo Aluminum Case Black Voice

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