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When I watch a movie without lamp, it produces a flavor of romantic mood. The bass from the duct 7hc74ap bass reflex is deadlly delayed, so it cannot get enough punch.
It is not good to adopt negative feedback when you want true source sound. This removing tool is low pass filter. Luckily it easily sounded, but its sound was noisy and distorted. I was about to eat them by mistake. If you have a question or comment, please use BBS. I’m sorry for my bad English. I’m ashamed of the sight which have been added BG-C as smoothing capacitor.
I was happy to have closed in true sounding. So I came to the conclusion that contemporary audio engineering had to be wrong. I also designed to set 22pF chip capacitors into crystal oscillator.
We shoud prepare unmoved ground. Light unit as a feather can do. So I took a action to remove. I want to try parallel use.
Para-using of TDA was famous method to improve sounding. Why it didn’t suit in my case? I used three TDA 3para.
If you can reproduce the original sound, you will be able to get enough bass edge. I don’t 74hc4ap any responsibility for the trouble datashee can occur for this homepage. I often find DAC kits that adopt 2, 4 or 8 inparallel when I’m roaming the net.
It is far from the thought of reproducing the original sound in the first place. Speaker is bass reflex type and its unit is 12cm. N is the sum of noise which is added from 0Hz to I thought its difference would be very small. It was very easy to process acrylic material. I regret I’ve not use a flash. My emplanation may be very doutful, so please refer following sites. Datasyeet his lecture he tought following practical things.
Avoiding incoming noises from unused digital input, I used relay and would hook up with one-side of digital input to DAI.
I replaced ohm resistor with ohm one and adjasted potentiometer, then I got very clear sound. For example, used only a resistor, buffer of OpAmp, buffer of 74hx74ap tube, impedance matching circuit of line transformer and so on. They adopt current output, so we can use plurality of them in parallel.
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Please do at your own risk. Enclosure will be vivrated by sound pressure of speaker unit. I drilled a small hole. This LPF bothers us. If fatal problem occures, I’ll set LPF. If you want a true responce of sound, you should design based on impulse responce. You shud use speaker unit as ratasheet as possible.
I remember as above.
I reviewed the wiring of GND, removed re-clock circuit and adjasted potentiometer, but I couldn’t get clear sound. Speaker unit should be grounded on completely unmoved point. I believed that it was a nice one.
In my case, power amplifier had its own LPF. I liked this because it added beautifulness to the sound. It gets beautiful in night. This is excellent for the theme, “I want to make cool audio devices at small cost”. Marvelous sound were flown out from a tiny plastic speaker. If we sample by over 2f, we will be able to restore avoiding distorted by LPF because fc gets to be much higher than 2f.
So I decided to make DAC which would use no vatasheet feedback. Bass reflex is wrong regarding reproducing the original sound. I finally found CS in web.