ลำโพง | TECSUN - SP-80A (LS3/5A) | bookshelf speaker 85dB / 8Ω

Need some power

The TECSUN SP-80A has a nominal sensitivity of 85dB, which is quite a low figure. Although the impedance of LS3/5A is generally lower than this, only 83dB, after all, the impedance of speakers at that time was high, so the requirements for power amplifiers were lower. For the bookshelf box, the impedance of 8Ω and the sensitivity of 85dB are quite demanding on the driving force of the power amplifier. In practice, in order to obtain a relatively ideal sound pressure, the potentiometer of the power amplifier needs to be adjusted higher. Of course, it is a small box after all, so there is no need for a particularly powerful power amplifier. Obviously, although the sound pressure is low when the power amplifier potentiometer is not adjusted high, the sound is still loose and not tight, not the feeling of not being pushed up.

Melodious and moist sound performance

It is said that LS3/5A broadcasts human voices well, so let's listen to human voices first. I chose a beautiful vocal disc "Heart Land" produced by RCA and sung by The Judds. When the singing sounded, I was immediately surrounded by beautiful voices. Admittedly, the record is well-recorded, with a natural airiness, but that's still largely due to the speakers. After a few songs, I found that the mid-high frequency of this pair of speakers is very charming. The voices of Judd's mother and daughter have strong fundamental energy, and the high range is very clean and ethereal. This pair of speakers can interpret the slightly magnetic thickness and bright voice very well. Its intermediate frequency has moderate thickness and looseness. It is thick, not too thick, but slightly thick. It is loose, but it is not fluffy and weak. Because the speaker has a relatively small caliber, the overall is concise. Just moderately loose. The high frequency is very bright, loose, and round with a little warmth and softness. It is completely different from the dim yellow color of traditional British boxes, it is a fresh and bright color. I feel that its mid-to-high frequency energy is very strong, no matter where in the room, you can easily hear this bright and melodious mid-to-high frequency permeating the space. It has been raining for the past few days, and the air is very humid. This high-humidity environment highlights the charm of the mid-to-high frequency, which is very moist and transparent. It's the same feeling when I put on other vocal records. The slightly sweet, melodious moist sound makes people feel unforgettable. Try string records again, and find that the interpretation of string music is equally beautiful. This pair of strings under the speaker has nothing to do with very sharp sounds. The strings it performs are bright and full, and the high range will be moderately restrained. The sense of hearing is natural, fresh, warm, and soft. It is the strength of LS3/5A.

Limited to the caliber of the low-frequency unit, the low frequency of LS3/5A has always been weak compared with the mid-high frequency. How is the performance of Desheng SP-80A? I played a few dynamic records and found the overall performance to be satisfactory. Such a small unit, such a small cavity, of course, do not expect to be able to produce such a thrilling low-frequency effect, as long as the performance is in place, this pair of speakers can do it. Its low frequency is clean, tight, and has a certain impact, rather than being all-in-one. The low-frequency information that should be in the music can be resolved, and the energy that should be there is not lacking. If the listening space is not large, you will not feel a lack of low-frequency energy.

SP-80A does not have high-end tweeters, and it is impossible to achieve high-frequency extension. The small-diameter low-frequency unit also determines its low-frequency lower limit, and the energy cannot be comparable to large-diameter speakers, but the sense of hearing is good. , the melodious and moist sound quality has always existed. If the power amplifier is powerful, then you will feel that its sound is very balanced, and the overall energy will be slightly biased towards the mid-to-high frequency, and nothing can be performed, but there seems to be nothing missing. You can place such a small bookshelf box on a tripod in the traditional way, but I think it’s no problem if you put it on a table. Yes, it can be used as a desktop system. Of course, although its volume is about the same as some computer speakers, it does not mean that you can treat it like this. It has requirements for the driving force of the front end and power amplifier, so it cannot be sloppy. It may be a good choice to match Tecsun's own digital player and power amplifier, after all, they are relatively small in size and suitable for desktop placement.

Desheng's pair of SP-80A is a replica of the classic LS3/5A, and it is also a continuation of the classic. With Desheng's pricing, I feel that the price of this pair of