It can be tuned by the spirit of Deson, but it will take a lot of time, I do n’t want to use it.
PAA2 provides an immediate display of the frequency response, so you can immediately see the frequency response of the replacement component. The previous test of 1 ~ 2KHz has a slightly high response. Adding a notch circuit should improve it. Without saying a word, using PSPice to simulate it, you will quickly get the correction circuit as shown in the figure below, in which the inductor is wound by itself, the capacitor buys several specifications near the correction value from the supplement store to fine tune, and the resistance is used to adjust the attenuation Using a power type variable resistor, the tuning process took 3 months, and it was determined at the comfortable room temperature that the A / B test and vocal test were no longer modified, and there were not many modified components. I believe the original author used it There should be some errors between the material and this kit, or the difference between the material of the wooden box and the sound absorbing material, etc., otherwise it will not just be modified a little.
When you see the crossover used in the experiment, you know that this is money-consuming and time-consuming entertainment. It is true that my dad and husband who play DIY will not go bad, because all the thoughts after work are spent in this DIY world. And, to work hard to make money to enjoy this hobby, the mood after the completion is really â”…â”…. Cool.
However, it is also necessary to remind some DIYs who do not have much experience to complete the home. There must be a pair of reference equipment to compare, otherwise you have to hypnotize your own sound is correct, you can suggest buying a pair of full range speakers and a better microphone Come to test and tune, this way also made me pay a lot of tuition.
Caption: 173.6 ° C is a very high temperature. At the beginning, it is not recommended to use the vacuum tube post-level tuning, you can wait for the audition after finishing tuning, because his unique tone sometimes causes misjudgment.
R15, R14, R13 are the DC resistance of the inductor. The modified crossover circuit diagram is designed to attenuate 2db around 1KHz, so that the overall listening experience is smoother and you can rest assured that listening for 4 to 5 hours will not be tiring.
Really nice
Good taste may be subjective. How to use an objective method to explain good taste? Think about asking friends to come and the music teacher to come to listen. They all say that it is good. Their family members cannot be harmed by the previous voice every day. For reference, the speakers have been lent out for a while and then let them listen to them. How do I judge the good use of vocals for the first and piano for the second? And anyone can immediately know the difference. Even so, the tone is slightly darker by 1 ~ 2dB, but only for the midrange part will be more resistant to hearing, and the treble is smooth from 3K ~ 15K, which can be hardly heard above 15K. Can see the display of the instrument, the following comprehensive friends' comments are as follows:
(1) The bass speed is fast.
(2) It will make people want to listen to music all the time, and the music is very good.
(3) The sense of space is good.
My own sense of hearing is as follows:
(1) There are many sound details and the sound field is just right.
(2) The vocals can be freely played, and the crossover should be well connected at the crossover point.
(3) Listening in the 4 ping space, the shape of the instrument will not shrink when the volume is low.
(4) It is a little brighter than the KEF 3 / 5a midrange but not exaggerated. It can be said that it is very smooth and a little darker than AR3a because AR3a is a large speaker and its low volume is enough.
(5) In short, it's very listening.
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