Test Kchibo D39L, compared models R9710, DE1103 ,Radio Reviews


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Kchibo DSP D39L-2 (1)

I got Kchibo D39L, after listening for some time, do a test.

Comparison models: Tecsun R9710 (medium wave), Degen DE1103 (FM, shortwave)

Tecsun R9710 7

DEGEN DE1103 4

Location: 3rd floor study room (receiving environment is better, less interference)

FM contrast: so long antenna subjective feeling and almost DE1103, of course, is the practical application of 1103 is certainly better, because you sure will pull up the antenna thing. In the weak units found two machines have a slight induction of the human body, but the 1103 is a staff close to the signal changed for the better, and E39L is close to most of Taiwan is the effect of variation of manpower (and some people close to the time-varying sets is good)

Sound: Speaker will not say, after all, the volume in there, talk about the headphone output of it, feeling D30L or some big noise floor (although this seems to have is the improved version of), and compared with 1103, but the machine and Tecsun feeling compared almost the same, it sounds pretty good, because my 1103 had a polished, casual fine not more, and feel the sound is very balanced, unlike the PL550’s headphone output as bass heavy, but very comfortable listening, feeling Kairon’s tuning is still very good, that is the problem but also to strengthen the noise floor (although the machine did not do a good job Tecsun, but Kairon should be in line for the better, right?)
Selectivity is still good, and as good as the first-generation DSP machine. Far better than quadruple tuning DE1103. Stereo turn-on threshold selection is better, basically to avoid the kind of weak signal the end of a big noise. In addition, the FM sound quality, I still think DE1103 potential to be larger, because the DSP on the sound signal interference is bigger, D39L inductor in series with the output (there should be resistance, but also can be used to reduce background noise?) Which noise to be filtered of it. Or because the CXA1622 D39L what mysterious connection with the law, do not get it to work in the digital state (seem to remember there is such a connection)?

AM: AM good, feel even better sensitivity than the R9710, selective mention directly is not a grade. Received in Japan, Russia, there is a religious radio station. But felt the signal must reach a threshold to normal sounds, otherwise, it is a very serious distortion, can not listen to this and analog radio is not the same, weak analog signal that is slowly weakening, the letter noise ratio gradually decline, is continuous change, while the DSP feeling is that when the signal becomes weak, the voice suddenly can not listened to, but just the signal that is still relatively good intelligibility, not reduced to not listening level. In the FM did not feel this section is the basic phenomenon.

SW: so long antenna (d39 pulled up) we are most concerned about short-wave, because the draft lost (in my study room to listen to the record written on a exercise book, and the results of forgot, and after several days think of hair into the jar, so remember a radio frequency when tested several radio stations, feel the low end, all D39L has been good in 1103, remember the work week looks like a low-end test worse than 1103, but Taiwan does better, 2.8XMHZ radio, remember not clear the addition D39L noise floor, or larger, quieter than 1103, in the end 9.xxMHZ the radio, I feel almost high-end, too, about the same way, but the 1103 noise floor advantage. listen more clearly. there is the AGC 1103 is better than 39l, moderate-intensity units, 1103 basic undulating sound, background noise with the signal change, and D39 on the clear voice suddenly suddenly small, When the signal is too weak, but also because the problem becomes very difficult to listen to the threshold. selectivity is essentially DE1103 narrowband “D39L” DE1103 broadband, but some strange, sometimes some poor selectivity of small units, sometimes it will gap big, D39L and 1103 may be due to the way signal processing is not the same, so such a phenomenon it.

Receiver performance is such a basic, to say that improvements and other issues.

1 case of the process is quite general, but the plastic feels better than D91L, this is progress, to praise. Relative to the price, this is not very fine abrasive, possibly because of rapid development of DSP, these machine are some of the taste test it, I remember Kairon previous digital tuning machine, shell work is very good. Design there is room for improvement, recommendations or learn to SONY.

2 lock key operation is not very good, generally made of a long press lock, unlock more by right, or simply got to be a mechanical, do not think mechanical on behind, and now are a lot of MP3 mechanical lock with keys, and sometimes the mechanical key and combined with the touch of a button, is also very good. Is consistent with the user’s habits.

3 backlight colors, I personally like the stable of some of the colors, the green does not feel this good-looking, kind of yellowish grass green or more engaging, or orange.

4 blocks of the fuselage on the left of the metal is poorly decorated (probably mostly work reasons, while also not be so wide, narrow point on the line.

5 the distribution of the number of storage units is not reasonable, a number of pay would be to FM and shortwave, have to admit, now fewer and fewer people listen to AM, or direct altogether, and replaced with a flexible storage. I do not really want to keep Taiwan out of this sub-bands are any good (in the number of storage units are not many)

6 at the end of noise or some big, propose to improve some.

7 Intelligent backlight can switch price, and sometimes when it does not require bright.

8 battery capacity is too small to some, I do not care about this to, but many users care about.

Basic is the right, think later, make up at any time.


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