Imitation MCLNTOSH C-22 tube front stage, C-22 Vacuum Tube Preamplifier
Keywords: imitation MCLNTOSH C-22 tube front level
Imitation MCLNTOSH C-22 tube front level
In the preamplifier of the tube, Mcintosh C-22 and MARANTZ-7 are known, and the pre-amplifier circuit structure of these famous plants is still perfect, fidelity and stability have proven significant achievements. The Mcintosh MC-275 level and pre-pre-prime C-22 have been released a few years ago, and the author is ordered for the first time, while MARANTZ-7, 9 has now produced. Among the numerous gallbladder friends, I believe that I have imitated MARANTZ-7 (M-7). The author is no exception, and it will also imitate multiple M7, including original lines and improved lines, so the effect of M-7 and Features have a profound understanding, but Mcintosh C-22 similar to M-7, believes that the biliary artistic friends are imitation objects. Because the old-loaded C-22 is indeed a bit of M-7, the reason is that the C-22 has a multi-level filter and other relationships! Referring to Figure 1 McINTOSH C-22 schematic, the author has improved the old C-22 in modern guidance idea, mainly to remove all levels of filter and tone control, because these devices are targeted at the time, recording technology and The personal preference is set, because the author listened to the CD, so the magnetic head is also omitted.
Figure 1 McINTOSH C-22 Schematic
Line Analysis and Production FIG. 2 is a C-22 actual production line diagram described herein. From this line diagram analysis, the line is very similar to the Marantz-7, and is also a typical two-stage amplification plus one-stage cathode follower to make impedance matching. Therefore, this machine should match most of the post-level amplifiers, and facts have proven this. Figure 1 McINTOSH C-22 actual production line diagram
Production method: I - Separate power supply by using independent production with independent amplifiers and uses a shed. "Shed" mode makes it more able to play the creative ability of the croperse, and the part and parts can be more reasonable, so it uses a roofed work, and the split power supply is powered. Regardless of the signal-to-noise ratio, the channel serial sound, the high and low frequency response, the positioning and the air sense must be superior to the principle of a small amount of production of bile art friends. In terms of parts, resistors can use Tokyo aeroise, due to accurate value, the potentiometer RP that regulates the volume is also the use of Tokyo photoelectric products, regarding readers' hobby, negative feedback resistance can be used 78K ~ l00k, regardless of the love of the sound, but Should not be less than 78K, the author chooses L00K. The transportation capacitor at all levels at the capacitor can be based on the creser's favorite, hobby sound quality, transparent gorgeous options MIT, like to be flooded, can choose Germany WiMA Black Box, because It is also a spiritual and truth-seeking spirit like a Germanic nation. The 33P capacitor can be available in mica capacitors. In terms of production, the croissants have their own style and creative spirit (in Japan, South Korea and other places, the croissants are the artillery friends have already been upgraded as artist). I use some wooden boxes of some famous ink pen ("Parker", etc.), and the stainless steel sheet is used in the wooden box (such as photo 1). Therefore, the outer casing is wood, which is a metal stainless steel, and the two are added. It has the advantages of two materials. Therefore, the resonance problem is better than the single metal production, and the experimental results are indeed. Experimental production, previously said, using a studio method, refer to photo 2. Power socket use 5 needle Beijing king socket, because it is suitable for two sets of high pressure and a set of 6.3V filaments, and the effect is really reliable. The filament applies DC, 4, 5 foot connections and ground.
The casing of this class, first weld the wire and other local shed methods (completed)
In terms of power supply, this article does not have a great introduction. Because the burning friend's audio is often introduced, with the reader's personal opinion, the individual opinion should choose the adjustable regulatory pressure, because it can be coordinated with different types, Emotive, more aspects, and more economical. I have a multi-range power regulation that can be combined with many different prodrugs (such as photos 3). The signal input and output holder can be welded directly, and the tin wire is selected from 4% silver tin due to the selection of signal selection.
The middle and lower is C-22, the left is M-7, the right is SRPP, and the three can be used with the same power supply.
Multi-purpose regulator adjustable power supply supplier
Native and power supply
In terms of actual effect, this production C-22 line is similar to M-7, but the effect is, the M-7 effect is generally the alcohol and transparent, the middle sound and the vocals are more prominent, and the low frequency is relatively small. The C-22 introduced in this paper is obviously unexpected. In addition to the same conditions, the characteristics of the C-22 have M-7 (alcohol and transparent), which is significantly better than M-7. Perhaps a multi-worker is more comprehensive, more comprehensive, obviously better than M-7, in fact, in fact, different lines have different sound effects and excellent disadvantages, depending on individual lines Love and the needs of the environment. Moreover, any audio equipment is impossible to win, because each has a specialty, so as a bold ferrous friend, it is necessary to have multiple different types of models and works. It will be equipped with the situation, and the long-term extent. Although I have multiple factory machines and self-rear and rear grades, but still try to make production, to expand the model, the purpose is to have a match with listening.
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