I don’t know how many valued friends are like me because I’ve been subjected to Zhang’s “ killing poison †before entering all sorts of pits . Anyway, I was brought in pits, pits, SLR pits, running shoe pits, and The earliest headphone jack for me was coming here almost two years ago. It was time to give up my own Virgo . For the first time, I’m still going to play in front of me. Keke, clerical error. Foreword.
Part I IntroductionIn the memory, it was worth buying. It was exactly this time two years ago. After the summer vacation of the college entrance examination, I earned extra cash from the college entrance examination. I wondered how to point this site.
After more than two years passed, it was almost a year and a half since the earphones came to be burned. It should be said that the Xiaobai stage has been eliminated. But why haven't you bought something to write before?
Keke, foreplay is a bit long, it's time to ask questions.
Why do you have a fever? A while ago because I forget afterwards, owe too much money. Second, because the irascible mother said last week next semester not to move your equipment to school (because nearly home from the University, so I'm playing in the bedroom desktop and desktop PC), I think of wondering put home listening headphone system It doesn't make much sense either. It's better to change the box, the headset system sells the fever, and I hear that the active monitor at the entry level is enough to surpass the big ears in the sense of hearing and sound field.
Presonus E5, Q4p, JBL 305 are all within the range of my choice. The first choice is Presonus E5. Because it is the cheapest and king of 2k, it is very cost-effective. Through the shopping plug-in, we observed the historical trend of the next price and found that the Central Asian E5 had a 1599 second-second price for two consecutive Saturdays and Saturdays . The JBL 305 had special prices on Sundays at the beginning of the month and every other Saturday. When the old man comes to the top, the presonus e5 has a 80% chance of being discounted on the 30th of the Saturday, while the 305 has only half the chance to be discounted on Sunday. Well, the result was a discount of 305 on Saturday, and e5 did not cut prices.
The next day arrived, Amazon Express is still pretty fast.
Each package measures 37.4 x 31.6 x 25.8 cm and weighs 6kg.
Harman Warranty Card 1, Mega letter warranty card 1, Amazon invoice 1 on each box
Take out the inner package, very compelling in English, focused on propaganda "IMAGE CONTROL WAVEGUIDE" that is waveguide image control, the technology is JBL for its own flagship M2 REFERENCE MONITOR developed.
When I opened the seal, I found out the instruction to take the box correctly (inverted deduction). I was really touched by this detail, so I asked how to take it.
Take out, 305 box 1 KING CORD power cord 1 Manual 1 (with foot attached) Desiccant 1
Take out the main box, size 298mm185mm251mm weight 4.6 kg. The front panel is integrally molded and made of plastic material.
The side, bottom and top surfaces are all common black matte materials. The bottom has a bisecting line, which slightly affects the aesthetic sense. It may be convenient for users to stick their feet. The attached foot sticker is too small and too thin, and it is certainly not enough to rely on it to shock.
Positive power photo, using nearly 6-inch box, 2 frequency, 1 inch treble +5 inch bass, crossover frequency should be 1725HZ (officially not given), logo nameplate metal wire drawing, under the treble head for the power light, boot five Seconds light up.
List of backs, reversed hole, screwed, screws ((ー゚)
Back close-up, only supports Canon and TRS balanced interface inputs. On the right is the input sensitivity adjustment, which requires a fine-tipped refill, which can not be dialed, and can be selected between +4dBV and -10dBV, determined by the level of the input terminal. The input is full-balanced to -10dBV, unbalanced input (such as 3.5 or Rca to TRS/XLR) is adjusted to +4dBV.
"LF TRIM" and "HF TRIM" are "Low Frequency Trim" and "High Frequency Trim", ie, low-frequency trimming and high-frequency trimming. The adjustment interval is -2dB to +2dB. The amplitude is not large, and it is not infinite adjustment. I I think the main role should be space compensation.
Volume adjustment knob, moderate damping, feel good, I do not know how much the active box volume adjusted to the best, I was adjusted to the middle position.
The AC input can be adjusted adaptively in the 100-240v range, and the mother never has to worry about the wrong voltage to burn the box.
System and Environment
Audition environment: 3x3.5m2 bedroom, no acoustic treatment
Audio source : PC (win10, jriver22), Onkyo C-701A (Optical output for turntable)
Interface : QLS Qa730u Holder Line
Decoding/previous : Cayin I-dac6
Inserts : DIY
Signal line: line San fiber , cable Canon line to rca to xlr
Power cord : DIY, Volex (one for each speaker)
VOLEX and its own unreliable rca to xlr
Free up the desktop and put on the desktop
Reference
Cayin I-ha6 (four-core balance) + HD700 (copper and silver mixed upgrade line) Swans m200mk3 (by memory)
Writing this sense of hearing is relatively painful, because the other boxes in the dog's home are not of a comparative significance (too spicy chicken), and the 2.0 boxes carefully listened to are numbered, mk3 is the cousin's home directly connected to the onboard 3.5. Of course, the comparability is not high, but it can't be forcibly used as a benchmark for other people who haven't heard or heard only one ear. Dry cargo is not much, but it can give more help to players interested in switching to headsets and multimedia monitoring.
Personal hearing
The low frequency of the JBL 305 is more than that of the m200mk3, which is mainly reflected in the transient and dive. The mk3 is slightly soft at low frequencies, and it will appear cloudy when dealing with multiple drums, while the JBL 305's low-frequency reception and release is easy and neat, without any delays. . The low frequency of the speaker can be conducted by multiple parts of the body, sensing, the frequency of the body's intrinsic organs will also resonate with it, the headset can do head, but the box can hold the chest, so the speaker is natural in the low frequency (especially the sense of volume) Advantageous. However, when playing dubstep, the headset system feels a better explosive force, and the 305 can not lead the hd700 on all sides at low frequencies.
The voice of the JBL 305 was straightforward and clean, and it was a neutral monitor. The M200mk3's midrange is stained, slightly warm and slightly warmer. It should be more engaging when listening to Chinese lyrical vocals . However, the analysis of 305 is obviously one grade higher than that of mk3 in memory. Naturally speaking, it is not necessary to say that the classical composition of the playback is large. Presumably it will be even better if the recording performance is higher and the accompaniment elements are more popular in Europe and America and J-pop. .
HD700 as a second-hand price and 305 price similar sub-flagship headset, microscopically, in many aspects accounted for a considerable advantage. First of all, the analysis is more than one level higher. Perhaps the speaker must achieve the same level of resolution as the headset. It is really ten times more expensive. The vocal benefits from the advantages of intermediate frequency analysis, you can hear more abundant details of the atmosphere, showing Yuji Koji more magnetic vicissitudes, mellow and charming. In terms of high frequency, it is also the natural advantage of headphones that the headset diaphragm is so close to the ear, and even if the speakers are listening in the near field, the high frequency details will be attenuated or even distorted in transmission, so when performing the Paganini violin Whether it is high-frequency extension or overtone is the headset wins.
But since 305, the headset has heard a lot less. Why is this? Because of the 305's low frequency advantages mentioned above, there is also a vast lateral sound field, natural sound, and a comfortable sense of hearing. The most important thing is free and easy ah. When you listen to the second time, you can follow the rhythm on the floor with the low frequency. It is not limited by the length of the wire. In the appreciation of the classical, you can rely on the emperor. Enjoy your eyes quietly without worrying about the sudden drop of your headphones.
Tuning process
The reason why this post from last Sunday receipt drag now, because these days in a variety of "tuning", the first barely arrived when the desktop absolutely no space, then directly placed in the bed listening out loud As a result, the sounds were all in disorder, and the knots seemed to float everywhere. The low frequencies did not come out. Then put the box into the crevice of the computer desk. The right box is almost affixed to the host computer. The two boxes don't have enough space to adjust the angle, touch the desktop, the computer and the speaker are in shock, the sound is divergent, and the sound is heard. It was relatively impatient, and it looked uncomfortable, and the brains became negatively charged... so it took a day to sort out the desktop and make room for the sound.
A few days ago on the desktop, the host was stuffed in the lower left corner, not on the shelves
At this time, the sound was already audible, but the treble head did not reach the same position as the ears. Obviously, the sound of the treble sounded more full and transparent. Then the 15cm stereo rack was shot. After arriving today, the pair was blessed with the pair. Shelf, improved shock absorbers, raised the position, the sound is indeed considerable, the sound field is much larger, out of the box sensed, low-frequency also submerged. Because the speakers are closer to the wall and the bedroom is smaller, the HF and LF TRIM (equivalent to space compensation) have hit -2dB, which is suitable for near-field listening at a computer desk. The I-dac6 is set to bile duct tone and a short delay, and the monitor box is tainted.
There are the following points need to continue toss: 1 The noise is more obvious, from the treble header 10cm is more obvious, and may be 305 pairs of wire sensitive, and my current signal line is neither fair nor positive certainly shielding is poor, need to change the wire. 2 The space condition is limited, the speaker is only 15cm away from the back wall, and the 305 rear phase inversion hole can be heard clearly low-frequency standing wave, need to continue to engage in setting or back wall plus sound-absorbing materials.
Conclusion: The JBL LSR 305 is a pair of boxes that are worth my continued tossing. If one pit is left unfilled and one pit is left, it seems that this time it was on the road to fever.
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