IWISTAO Blog is the official platform of IWISTAO HIFI MINIMART, dedicated to high-fidelity audio and DIY electronics. We focus on tube amplifiers, output and power transformers, speaker enclosures, and Bluetooth audio technologies, including HiFi Bluetooth speakers, headphones, and tube-based acoustic systems. The blog shares product insights, technical knowledge, and practical guides for audiophiles and audio builders worldwide.
If you are tired the Bluetooth speakerby mass production and want to find a unique Bluetooth speaker with good sound quality, you can come here to check it out.
The cabinet is made of 13MM thick sandalwood board with high density and rigidity. The panel is made of 8MM thick oak board with sharp texture and good toughness. Its structure is embedded with 45° angled slot and has high stability. It achieves a 400-mesh surface treatment and is coated with wood wax oil to maintain its natural color, feel good and easy to care.
Handmade products are more or less awkward and cannot be compared to the products produced by assembly line. If you are a perfectionist, this speaker may not be suitable for you.
IWISTAO HIFI Empty Wood Horn Solid 1 Pair Treble Compensation for Full Range Matched Fostex FT17H Horn
This is a pair of empty solid wood horns. It can be used with the original Fostex FT17H horn super tweeter. The unit is equipped with a wooden horn to make the treble more efficient and better. It is placed on the top of the speaker and is equipped with a full-range horn as a treble compensation
Fostex FT17H horn super tweeter and large speaker (full range speaker or subwoofer) in parallel 2.2UF stepless audio capacitor and capacitor in series with the treble positive.The big horn speaker plus the horn is the right way if available. After listening to it, you may never hear the small speaker cabinet again.
IWISTAO Passive Preamplifier Kit Unbalanced to Balanced/RCA to XLR/Signal Input Transformer
When you use your mobile phone or computer to listen to music, you will find that the sound is small, the details are small, and the dynamic is thin, their sound quality aren’t full and pleasant like as CD player, decoder. This is because the output value of mobile phone and computer is 0.2-0.5V audio voltage only, while the existing power amplifier is generally designed with an input voltage of 0.75-1.2V. This intermediate voltage difference requires a 2x amplification boost value. Now the 1:2 signal boosting transformer solves this disadvantage.
1:2 signal boosting transformer, balance transformer, and inverter transformer, that is a passive boosting transformer developed to compensate for low signal output of computers and mobile audio sources in the existing market. Make the ordinary sound source close to the effect of CD player signal one. And, if CD player connected the signal boosting transformer to power amplifier, its sound will be even more powerful. After the audio signal pass the boosting transformer and amplify, it will output a stable impedance, it will lead to its signal transmission is fidelity, and its sound field positioning is better!
IWISTAO Tube FM Stereo Radio Power Amp 6P1 2x3.5W Whole Metal Chassis
About this tube FM radio, it used 6N3 as a high-level and mixing, 6C11 as the unit local oscillates, IF amplification as 6J4 together with 5pcs mid cycle inductance, and it has the advantages of high sensitivity, low noise. After stereo decoded by TA7343AP, then the signal will be amplified by tube 6N2 as a preamplifier. And power amplifier part, it used the classic 6N2 driving 6P1, the sound is sweet and mellow.
It is a tube FM radio built-in power amplifier inside, the power amplifier is single-ended class A and its output power is 2x3.5W. After get it, you only need connect with outdoor antenna, and HIFI speakers, then you can listen to it, recommend using a pair high sensitivity full range speakers.
The 4.5 inch is a very retro size, a little bigger than 4 inches and smaller than 5 inches. In the 1990s, there were more speakers to use the size speaker unit. The cabinet design of this 4.5-inch speaker is very reasonable, its depth is increased, bass is better, and it is more in line with modern style, so that retro classic speaker reproduces its spring. Do not believe that you can listen to the video, the bass is full and flexible. Due to using high-sensitivity condenser mic, the recording background noise may be more obvious, but the effect is closer to reality. This 4.5-inch speaker enclosure made of bamboo is compatible with 4.5 inch Sony speakers, and it is recommended that install speaker units inside as the photos showed, and will get better effect. Why is it effect better? It is not just casual to say, the built-in speaker units and the cabinet panel form a horn cavity, which increases sound pressure of the direct sound wave, reduce the treble diffraction on the panel, and then sound field becomes accurate, resolution of midrange and tremble is improved, there is a classic example that J B L flagship series that uses horn design.
