Wednesday, December 18, 2019

IWISTAO 1 Inch Tweeter External Placed Aluminum Casing High Frequency Compensation for Full Speaker

IWISTAO 1 Inch Tweeter External Placed Aluminum Casing High Frequency Compensation for Full Range Speaker

Many audiophile like to use a pair of full range to play music, it is a good choice. If the full range speakers are matched with external tweeter to compensate the high frequency, it will be better.

This external tweeter speaker is mainly used for treble compensation for the audio. It is suitable for the high-frequency compensation of those full-range sound, which is not enough for high volume feeling, dim, and poor performance, It has a good complementary effect. And easy to install, externally placed on the top of the speaker, beautiful and generous.

It is made of a one inch tweeter unit that its sound quality is clear and delicate, clear and not harsh, the effect is very good.

There is our customer's feedback for this pair external tweeter and thank their sharings.
"Seem to add a little more clarity, voices more well defined. Subtle but definite and worthwhile improvements. Make decent speaker just that bit better very pleased.  Supplied wire only about 12" so you may need to extend, easily done. I am not sure how they do it, but having listened to a few tracks now, it's like having a new pair of speakers. The stereo imaging is much more well defined, instrument separation is pin sharp and the overall listening experience is far more pleasurable and musical. Excellent value for money, the improvements they have made far exceed the cost of these little super tweeters, very very pleased I bought them."

"отличная штука, хотел поменять акустику теперь не хочу, добавили объём и т.д. рекомендую данный магазин и товар к приобретению для тех кто хочет за малые вложения изменить звучание системы."

This tweeter speaker adopts a special aluminum alloy casing, which is high-end atmosphere and can be conveniently placed on the top of the speaker. The lower part can be fixed with double-sided tape. It is also possible to punch holes in the top of the speaker to make it more secure. It is a very good choice for modifying home speakers.

Monday, December 16, 2019

How to build a tube FM tuner with IWISTAO tube FM PCB kits

How to build a tube FM tuner with IWISTAO tube FM PCB kits

There are some key components for the tube fm radio tuner PCB. You may select them and assemble your tube FM tuner, then connect power amplifier and speakers after soldering and tuning this PCBA, the system will work, at that time you may enjoy warm and soft tube sound, full vacuum tube taste...

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IWISTAO Mid Cycle Inductance Kit for Tube FM Radio Tuner 1 pc frequency detector and 4 pcs Mid Cycle Inductance

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PCB + Mid Cycle Inductance Kit
You may select a power transformer according to your local voltage.
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IWISTAO Power Transformer EI Output Voltage 230V-0-230V 6.3v 11V for Tube FM Tuner 110/220V/240V

After soldering and tuning, you will get a finished PCBA.

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IWISTAO Tube FM Stereo Radio Tuner Finished PCBA Preamplifier Version

There is a demo video for the PCBA with power amplifier and speakers.

Friday, December 6, 2019

IWISTAO Electronical 2 Way Crossover Preamp HIFI Linkwitz-Riley filter 4...

Crossover PCBA is constituted by renowned Linkwitz-Riley filter. Linkwitz-Riley filter, mainly for the active filter circuit, for example, it is used in many sophisticated multi-way electronic crossover systems. The characteristics of this filter is up to 4 stages attenuation slope, in other words, every one octave frequency sound energy will be attenuated 24dB, i.e. attenuation slope of -24dB / Oct (Oct ie Octave, an octave interval of the mean). Meanwhile, in the entire audio band (20Hz-20kHz), Linkwitz-Riley filter has a very flat phase response, which is far better than Butterworth filter after filter signal, no phase distortion, which is widely admired by audiophiles.

Although many friends put a lot of money and efforts to preamplifier, unfortunately they may experiences a little frustration in final output. It is hardly difficult to solve this problem to use excellent pre-divider circuit of preamplifier plus multiple power amplifiers, our series of electronic crossover board and amplifier board can perfectly realize your dreams!