Our readers are constantly asking for comparative testing of the sound of various models of active acoustics. Unfortunately, we rarely have the opportunity to please with such materials, since such comparisons are associated with various attendant difficulties, including organizational ones. However, this time it was still possible to compare three competing budget models: Vigoole C2032, Sven SPS-700 and Microlab B-73.
In the table, we present the most important characteristics of the acoustics in question.
As you can see, the dimensions of the speakers and the size of the woofer cone are the same for all three models. Thus, these models can be considered ideal competitors.
The appearance of all three models is quite traditional and is a copy of the older models. By design, only Microlab speakers can be distinguished - for the profiled side walls of the case. Everything else does not look modern and original.
Volume and tone are controlled by rotary knobs for all three test participants. No remote controls are provided. In the Vigoole and Sven models, the controls are conveniently located on the side panel of the active speaker. In Microlab speakers, all available controls are located at the back. In addition, they do not have an RF regulator. Speaking of ergonomics, Sven should be highlighted, since unlike the Vigoole, which has the power switch at the back, the SPS-700 has it on the side, next to the rest of the controls.
The functionality of the speakers is not very rich. Of the most characteristic, it is worth noting the slotted port of the phase inverter brought forward by Sven. In addition, Sven acoustics are equipped with a subwoofer output. Vigoole and Microlab traditionally have additional RCA inputs. Unlike other models, the Vigoole speaker cabinet is equipped with plastic feet. It was not without disappointment. Microlab speakers have a decidedly outdated Mylar tweeter that was used in models at the dawn of active acoustics.
Let's take a look at the measurements made according to our loudspeaker testing methodology.
Vigoole C2032
Frequency response is ± 8 dB in the range 80 Hz - 20 kHz. For budget acoustics, such indicators can be considered acceptable.
Judging by the measurements, a drop in the frequency response is observed even in the mid-frequency region.
The bass level is adjusted within 18 dB.
The treble control starts at 1 kHz. And already at 20 kHz, the adjustment range is 24 dB.
Distortion spectrograms
Judging by the results of measurements, the Vigoole C2032 has a small amount of distortion.
Sven SPS-700
Frequency response graph measured on the axis of the tweeter in the middle position of the tone controls
Frequency response is ± 8 dB in the range 65 Hz - 20 kHz.
Frequency response graph measured on the axis of the tweeter and at an angle of 30 degrees
When changing the position of the microphone, changes in the frequency response are observed by an average of 2–3 dB. In this case, there is a drop in the frequency response in the mid-frequency region, but the shape of the graph practically did not change throughout the entire range.
Frequency response graph measured at different positions of the LF regulator
The bass control adjusts over a 14 dB range at 100 Hz.
Frequency response graph measured at different positions of the HF regulator
The treble control starts working already in the midrange, and by 20 kHz the rejection range is 33 dB.
Distortion spectrograms
The amount of distortion in Sven speakers is average, with a predominance in the low-frequency region.
Microlab B-73
Frequency response graph measured on the axis of the tweeter in the middle position of the tone controls
Frequency response is ± 8 dB in the range 80 Hz - 18 kHz.
Frequency response graph measured on the axis of the tweeter and at an angle of 30 degrees
Measurements show that Microlab loudspeakers lack strong directionality. Changes are only observed in the HF range.
Frequency response graph measured at different positions of the LF regulator
The LF regulator operates in the 20 Hz - 1 kHz band. At a frequency of 50 Hz, the adjustment is carried out in the range of 15 dB.
Distortion spectrograms
Microlab B-73 exhibits slightly above average distortion throughout the entire frequency range.
Sound
The most optimal in terms of sound quality among the presented models are the Vigoole speakers. They are distinguished by the most balanced and comfortable sound throughout the entire range. Meanwhile, in the sound of Vigoole it is worth noting a strong directionality: even with a slight deviation of the head, there is a noticeable change in timbre in the HF region.
Microlab speakers play a little worse. The main complaints about the quality are caused by the sound in the high-frequency range: the Microlab B-73 clearly has insufficient high-frequency saturation. Of course, the HF regulator in this case would correct the situation for the better. In addition to the lack of high frequencies due to the use of a mylar tweeter, the sound in the high frequency range is specific. The rest of the sound is similar to Vigoole.
Sven's sound is the most mediocre. Particularly unpleasant is the pronounced bubbling around 100 Hz. The hump in the frequency response changes the timbre of the sound so much that you have to almost completely remove the low frequencies with the BASS control. But with this setting, the sound practically loses the low-frequency range and all the dignity of the FI brought forward is meaningless. The high frequencies of the Sven SPS-700 are the only successful frequency range. However, the quality of the high-frequency range remains at an average level.
findings
Thus, we found out that among the considered acoustics models, the Vigoole speakers turned out to be the most acceptable in sound. The advantage of the C2032 over its competitors turned out to be not so significant, but sufficient to reveal superiority in sound quality. The rest of the Vigoole C2032 is approximately on the same stage of development as the Microlab and Sven speakers. We would like to see something more in 2010.
In connection with the autumn-winter prostration, I had a sudden desire to wipe the dust behind the monitors of a spare computer and there I found the Chinese speakers Sven SPS-611. The main acoustics on which I listen to music is the Canton Fonum 630 DC and several pairs of Wharfedale Diamond of different series, so the maximum task was that Svens did not immediately want to be thrown away when directly compared with the shelf Warfedales. Having spent the weekend, I achieved a pretty good result, so maybe someone will come in handy in order to keep themselves busy on the weekend with something conditionally useful. :) Replacement of speakers or any operations of significant complexity were not envisaged - the task was not to make good acoustics (on this basis, this is simply unprofitable), but to fix the flaws of Chinese design with the lowest possible labor costs.
For the seed - the frequency response before and after the rework (the microphone is not calibrated, so higher than five kilohertz is not very accurate, but you cannot hear special peaks and dips of kilohertz up to 12 by ear from the sweep):
First, about what was wrongly done in Sveny. Firstly, there is no crossover (however, it would be naive to expect it to be present in such cheap acoustics). In addition to problems with the frequency response, this leads to the fact that the tweeter works with a sampling of the midrange part of the range, which it does not reproduce without distortion and in which it has significant resonances. Secondly, the tweeter in the svens is a horror flying on the wings of the DEMS. Thirdly, the body is very ringing in the midrange spectrum, fourthly, the phase inverter is tuned too high, therefore it only adds uneven frequency response in the lower part of the spectrum.
1. Modification of the case.
I use acoustics with an external amplifier, so I removed the transformer and amplifier board from one of the speakers as unnecessary. The resulting hole is best sealed with some hard and fairly deaf material, for example, a three-millimeter non-foil textolite. It is better to use epoxy, but I was too lazy to wait for it to harden and I used Titan building glue - it coped with the task quite well. After solidification, a hole is drilled for the clamps in both columns, something like this:
It is advisable to lay a rubber band around the circumference under the terminal block so that the case is sealed in this place. Also, in one of the speakers, we seal the holes from the screws with which the transformer was screwed. It is better to replace the wires immediately with copper of at least 0.75. Further, inside the copus, it makes sense to put a spacer at least between the side walls (it is additionally possible between the front and rear, but not necessarily - they have a smaller area and they ring weaker); I used a rectangular aluminum profile, placing it with an effort in the spacer and fixing it with the same "Titan". You also need to glue cotton wool on the inner surfaces of the case (except for the front one) in one layer (an ordinary large medical roll is enough for about four columns) on the "Moment" glue so as not to dangle. It could have been a synthetic winterizer, but it was necessary to look for it, and cotton wool is in every pharmacy. :)
Next, you need to remake the tweeter holder. In general, it is necessary to kill for its design, because all the rules for the placement of high-frequency heads in acoustics are violated. We remove the speaker from the holder and drill all the insides with a nozzle on a drill with a diameter of 35 mm, then cut off the resulting tube with a dremel or knife to the plane of the case and remove the chamfer from the inner edges with sandpaper. You should end up with something like this:
You also need to lengthen the phase inverter with a tube glued from several layers of thick paper, inside the additional tube should protrude from the Svenov one by about 4 cm, this will reduce its operating frequency by 10-15 Hz.
2. Refinement of the tweeter
This operation must be done with straight hands, so if you are not sure that you can do this without breaking the diffuser, it is better not to try. Gently wetting the edge of the plastic cap with acetone, but without flooding the entire speaker, you need to soften the glue that holds it and carefully separate it from the diffuser with angled tweezers:
The glue is quite elastic there, probably because of it, the tweeter has a large rolloff after 10 khz and terrible linearity in the rest of the range. After separating the cap, you need to clean off the remaining glue from it with acetone. Now we need to slightly increase the rigidity of the coil-cap bond; To do this, carefully glue the area of \u200b\u200bthe diffuser from the coil to the place where the cap is glued with superglue. It is not necessary to apply a lot, as this will increase the weight of the moving system. Lubricating the entire speaker to the corrugation is also not worth doing for the same reasons - the linearity improves, but there is a significant blockage from above (I later checked this option on other speakers :)).
Carefully, trying to get exactly in the center of the diffuser, glue the cap back on. Next, we glue the tweeter to the previously prepared plastic decorative plate with the same "Moment" along the entire diameter of the cardboard washer, making sure that the glue does not get on the diffuser and corrugation.
2. Refinement of the woofer
In order to smooth out the frequency response in the midbass range, the simplest way is to lower the resonant frequency of the moving system by increasing the mass. This, of course, will reduce the sensitivity of the speaker, but we do not have a portable device or a tube amplifier with limited output power, so we will survive that. :) We will need a self-adhesive automotive mastic to reduce body resonances, based on bitumen. It is necessary to cut out a washer with an outer diameter of about 54 mm and an inner diameter of about 34 mm, give it a cone-shaped shape with your hands (it is quite easily deformed, but it is advisable not to overdo it and not to break it in some place) and glue it around the woofer cap. If you have an accurate balance, you can weigh the resulting washer - you should get about 3.5-3.8 grams. It should look something like this:
After that, it is advisable to trim the edges with a knife, without damaging the diffuser, press (without undue effort, but evenly) over the entire area of \u200b\u200bthe washer so that it adheres well. What this modification gives can be clearly seen from the following two frequency response curves:
4. Crossover
The calculated, frankly speaking, did not sound very good right off the bat, as is often the case. The indicated denominations are the result of a fairly large number of experiments, in addition, the dynamics in Sveny can vary quite a lot from release to release, so it makes sense to try to adjust the crossover for a specific version of the speakers. Additional treble boost is needed to compensate for the tweeter blockage. It is better to use film capacitors in the HF section, the woofer can be shunted with a non-polar oxide. If the sound deteriorates when the capacitor is connected directly to the woofer, you can connect a 1-3 ohm resistor in series with it. The inductance is wound on a plastic frame for an armored core with an internal size of Ф22x16 with a 0.75 wire, five layers.
You can mount the parts directly on the magnetic system of the woofer (the printed circuit board in our case is already a clear aesthetic) by gluing it with good double-sided tape (Tesa / 3M) so that the speakers do not rattle.
Home theater system 2.1 - all this is so mundane and uninteresting. Real computer acoustics a priori consists of two stereo speakers, and it is quite difficult to argue with that. After all, it is often possible to connect an ordinary pair to any PC without problems, but with multimedia devices, many users have to pretty much suffer. By the way, we must not forget about quality. Decent home theaters and 2.1 systems simply cannot be included in the price range under 10,000 rubles.
The focus of this article is a conventional Sven SPS-700 stereo system. Description, characteristics and owner reviews will allow the reader to learn a lot of interesting things about these wonderful columns. Perhaps this particular article will change the negative attitude of potential buyers to such devices.
Strange price
The characteristics declared by the manufacturer, user reviews and low cost (up to 3000 rubles) cause confusion among many potential buyers. Cheating? Yes, you can logically assume that the Sven columns are of poor quality, but you don't need to succumb to the negative. It's pretty simple. The equipment comes to the Russian market from Finland and China (only one border), respectively, the price of high-quality speakers includes minimal logistics costs.
The second factor contributing to the low cost is poor brand awareness. The Sven company is popular only in the CIS countries, and in order to enter the world market, the manufacturer simply deals with dumping, reducing the cost of quality goods to the minimum allowable mark.
It remains to be seen how long such an offer of unprecedented generosity will be available to the Russian consumer, but already now many potential buyers have become more active and have begun to slowly look at the cheap brand.
First meeting
Speakers Sven SPS-700 from the first minutes of acquaintance will certainly attract the attention of potential buyers. A giant box weighing about 10 kilograms is really capable of intriguing anyone. Thick cardboard, colorful packaging, Russian-language design - all the necessary range of amenities that the future owner will surely like.
The manufacturer clearly did not spare the foam: the speakers are packed quite seriously, it seems that the Finns collected equipment for the bears that will play football in packaging. On the other hand, such protection evokes positive emotions in the first minutes of acquaintance with the product.
The complete set of the speakers is usual: a Sven SPS-700 Black stereo pair, interface cables, an instruction manual and a warranty card. Sometimes an advertising brochure comes across in the boxes, in which you can get acquainted with all the products manufactured by the manufacturer.
Appearance
Probably, the Sven company will not soon enter the world market with its products. Judging by the owners' reviews in the media, the design is to blame for the 21st century, and the Finns are still creating an ordinary parallelepiped with two speakers. The appearance of the Sven SPS-700 speakers is not impressive.
As for ergonomics, there are many questions to the manufacturer. First, the power cable that supplies power to the amplifier is directly connected to the speaker, there is no way to disconnect it (for example, for ease of installation or transportation). Many users consider the control panel the second negative in the columns. It is located in a special recess on the main speaker (where the amplifier is located). It is rather inconvenient to manage the system if it is remote. A remote control would be useful here.
Build quality and interfaces
What the user will not be able to find fault with is the build quality of the stereo pair. The Sven columns can be safely called a reference product. MDF plates (yes, not wood) are perfectly matched to each other. No cracks or distortions - the build quality is excellent.
The mounting of the speakers is a little unclear, and upon visual inspection, one gets the feeling that they are not securely mounted. But this opinion is deceptive, the manufacturer just decided to show his design skills here. If you disassemble the speaker, the owner will see that the speakers are securely fixed and will not fall out anywhere.
As for the interfaces, Sven's technologists were able to surprise the buyer here too. In addition to the standard connectors for connecting a stereo pair to a computer and connecting the speakers to each other, the manufacturer organized an audio port output from the amplifier for connection. Quite an interesting solution, however, it is not clear what resistance is supported by this output.
Basic specifications
Beauty and appearance are good, but most potential buyers are interested in completely different parameters of the Sven SPS-700 speakers. User reviews always begin with an assessment of the sound quality, so it's time to get acquainted with the technical characteristics of a stereo pair.
Better to start with the amplifier. The manufacturer said that it was assembled according to the analog TDA2030A circuit and is able to reproduce the entire audible frequency range (20-20,000 Hz), but in practice everything looks a little different. Many enthusiasts were not too lazy, disassembled the head speaker and conducted a number of tests.
It was experimentally found that the amplifier produces a range from 100 to 18,000 Hz, and the TDA2030A board is slightly different from the microcircuit sold in specialized stores. It is clear that such a factor does not add positive feedback.
Playback quality
It is not difficult to guess that the speakers of the Sven SPS-700 system, no matter how high-quality they are, will not be able to reproduce sound in the full frequency range. But, as practice shows, the acoustics do a good job of reproducing low frequencies. The bass is very soft and deep. In general, it seems that the system is connected to a subwoofer. In their reviews, many owners openly thank the manufacturer for such high-quality speakers (do not forget that they are responsible not only for the bass, but also for the mids).
You can encounter another oddity when reading the instructions for the Sven SPS-700 speakers. Our review shows that the manufacturer's declared power (20 watts per channel) grabs the attention of users. Judging by the sound, many owners are sure that the speakers with an amplifier produce about 50 W, naturally, many users do not turn the volume up to the end. With such a stereo system, it is really pleasant not only to watch movies and play games, but also to enjoy listening to your favorite audio compositions.
Feedback
No matter how beautiful everything looks, users will still have questions to the speaker manufacturer Sven SPS-700. How to connect the system to a PC if the acoustics are installed a long distance from the system unit? This is the most common question among potential buyers. The fact is that a fixed length Jake-RCA cable is used to connect the speakers to a PC. Naturally, the user has a dilemma: install the speakers closer to the computer, or purchase a new cable of the required length. But it would be easier for the manufacturer to install spring-loaded clips instead of RCA connectors.
Many users pay attention to the low quality capacitors that are installed on the board. Literally after a year of operation, the containers swell, which significantly impairs the sound. The problem is naturally solved by replacing the part.
The owners of acoustics are also indignant about the equipment of the speakers: there is simply no padding inside, which is why the high and mid frequencies sound somehow rude. To add softness, the owner will have to disassemble the speakers and place synthetic soft material around the speakers, which will not allow the sound to resonate with the wooden cabinet.
Hi% username%. Today I will tell you how to slightly upgrade your computer acoustics. I must say right away that this manual does not pursue the goal of making B&W speakers out of your speakers, but only reasonably improve the sound with a minimum investment of time and money.
So, we have the following columns:
What is the problem with such devices ?? And the fact that the Chinese save absolutely on everything, which we can be convinced of by looking at the schematic diagram of the amplifier found in the vastness of the network:
The columns all have an almost identical layout, so you% username% should have no trouble figuring it out.
can be downloaded in full size.
Having opened, you should see something like this:
What we need:
- soldering iron
- solder
- heat-shrink tubing
- details to taste :)
Power Supply
Let's start with the power supply. Transformer 2 * 13V 1.2A. But how is it,% username% !! ?? Indeed, it is written on the box that the speakers should each produce 18 W of power, and with such a transformer, only P \u003d U * I \u003d 15.6 W for 2 channels is obtained !!! But here things are actually a little more complicated. This calculation will be correct for a sinusoidal signal, but a real music signal is much more complicated, it reaches its maximums quite rarely. If we take the average signal level, then compared to the sine, it is several times less. You can find comprehensive information in this article.So using the program, you can make sure that our transformer almost fits into the requirements.
Rectifier.
Next we have a diode bridge D1-D4 made of 1N4007 diodes. 1-ampere diodes, we replace with Schottky diodes, since the forward voltage drop across them is less than on silicon diodes. I put in 1N5819. Any diodes will do, as long as the current and reverse voltage match the parameters of the circuit.
On average, the voltage drop across silicon diodes is 0.5-0.6V, on my copies the voltage drop was only 150 mV.
And do not forget to grease the soldering points with flux, then the solder will collect in beautiful shiny balls around the terminals. If you smear a little, then it will not stick well to contacts and spread in all directions.
Filter capacitors
Here, the masters from the Middle Kingdom also decided to save money and put only 3300 uF in the shoulder. Not enough, it is necessary to increase, only without fanaticism !!! The more capacitance you put, the more current flows through the diodes at the moment the capacitors are charged and they may not withstand.I put an additional 4700 uF each in my shoulder, leaving my family behind.
Everything is with the power supply.
Amplifier.
There are electrolytes at the input (C9, C10) - a mess, since it operates on alternating current without bias, which is not good at all. The datasheet on the microcircuit contains a capacitor with a capacity of 1 μF, although it is also an electrolyte.We go to the store and buy our domestic film K73-17 with a capacity of 1 μF and put it on. Since it is much more electrolyte, it is better to put on heat shrinkage on your feet so that nothing shorts. We solder:
Crossover
If so you can call the electrolytic capacitor 4.7 uF.There are two options here:
- just put the tape
- thinking about a new crossover
Do not forget to perform a similar operation in the second column.
Tone block
It also does not shine with skillful development, so if you wish, you can turn it off by connecting the wires from the input directly to the volume control (R9, R10). But I decided to leave for now.Sound
Everything is very subjective here. But my gaze became noticeably denser.But there are also objective parameters:
- an increase in capacities in the PSU filter gives less drawdowns and at high volume there will be no feeling that the sound is falling through.
- the use of Schottky diodes slightly increases the supply voltage, allowing the microcircuit to be overclocked to a higher power (datasheet voltage 22V)
- film capacitors introduce several times less distortion than electrolytic
In custody:
So, with minimal financial investment and time investment, you can slightly improve the sound of your speaker system.Review of 2.0 acoustics Sven SPS-700
Despite the widespread use of multichannel sound sources (mainly computer sound cards) that support the output of at least six channels (five for wideband satellites and one for low frequency), "regular" stereo speakers are in unremitting demand. The reasons for this are the high cost of a "decent" set of 5.1-acoustics (especially 7.1), and even more often - its relative bulkiness (there is not always room for six or eight speakers in the room, and a web of wires does not suit many people).
The most popular "classic" speaker systems, designed mainly for connection to the stereo line out of a computer, are models with a price of about $ 50, cheaper speakers can rarely provide acceptable sound. Their design has long been established and includes a wooden case (made of MDF boards) of a relatively small volume, two dynamic heads (conical mid / woofer with a polymer or paper cone with a diameter of 4-5 inches (10-12.5 cm), a domed fabric or a mylar tweeter with a diameter of 2-2.5 inches (5-6.25 cm)) and an amplifier with a power of 10-20 watts per channel.
In most models, acoustic design is used in the form of a bass reflex with an exit to the rear panel, but this imposes some restrictions on the installation - it is highly not recommended to place them with the rear panel close to the wall or in a closed niche of a computer desk, as this will negatively affect the quality and level of low frequencies. In any case, it should be remembered that such acoustics will not be able to provide normal reproduction of the lowest frequencies; you should rely only on the tolerable sound of the upper and (less often) middle bass. Only a separate subwoofer, which can be purchased separately, will help to radically correct the situation.
Exterior of acoustics with walnut finish
The Sven company positions the SPS-700 multimedia speaker system (the cost starts at 1400 rubles) as a universal one, which is equally well suited for reproducing any sound material: music of various styles, dynamic computer games, energetic blockbuster scenes.
This model has a well thought-out design and gets rid of some of the disadvantages of budget speakers described above. Notable advantages include the fact that the slotted bass reflex output is located on the front panel, which removes any restrictions on their installation in the room.
The exterior of the acoustics with ebony finish
It should also be noted that the controls are conveniently located - I am glad that the designers did not traditionally place all the controls on the rear panel, but placed them on the right side of the active speaker. This solution eliminates the need to grope the turntables "blindly".
Acoustics controls
The manufacturer provides the following specifications:
- Number of channels: 2.0
- Frequency Response Range: 40-20,000 Hz
- Resistance: 4 ohm
- Body material: wood (MDF)
- Tweeter: 20mm dome-type fabric
- Woofer: 115mm cone type with rubber surround
- RMS Power: 40 (2 x 20) W
- Line In (Stereo): RCA Connectors
- Headphone out: none
- Adjustments: volume, bass level, treble level
- Color: ebony, walnut, silver
- Acoustic design: slotted bass reflex with front panel output
- Additional functionality: line-out to subwoofer (Mini-jack 3.5 mm)
- Magnetic shielding: yes
- Power supply: 220 V, 50 Hz
- Speaker dimensions (H x W x D): 255 x 150 x 195 mm
- Weight: 4.74 kg
Another advantage over competing models is the presence of a mono line-out on the back of the active speaker for connecting an active subwoofer. To create such a "triphonic" Sven company recommends purchasing the Sven HA-616W model, although you can pick up a subwoofer from another company in the same price range. If you decide on such an "upgrade", then you should take into account that this output is made in the form of a 3.5 mm Mini-jack and you may need an appropriate adapter, since on most subwoofers the line input is implemented as a "tulip" ( RCA connector).
Acoustics: rear view of the active speaker
In addition to the subwoofer output, the rear panel contains: two RCA inputs for connecting to a sound source, a 3.5 mm Mini-jack for connecting a passive speaker, a power cord and a red power indicator. It would be more logical to place the indicator on the side panel next to the knobs, since it is practically useless at the back.
Of course, I would like to see instead of a "mini-jack" spring-loaded or screw connectors for connecting a second speaker, as this would make it easier to replace the wire with a longer one if necessary, but for acoustics in this price category it is forgivable. In extreme cases, you can purchase an extension cord (3.5 ", mom-dad) with a large cross-section of wires, since a complete cable about one and a half meters long may not be enough for many. By the way, earlier there was a variant of this model with access to a passive speaker in the form of a tulip, however, this is no better, but no worse.
Appearance of acoustics with a silver finish
The design of the speakers is classic, one might say strict. Three finishing options allow them to blend harmoniously into almost any room. The front panel is covered with a removable acoustically transparent grill in black (in the case of variants with wood imitation) or silver (speakers of the same color).
The phase inverter remains open with or without the grill installed. Interestingly, there are four holes on the grill that attach it to four projections on the speakers, although there is the same model with “reverse” mountings - the holes on the speakers and the projections on the grill frame. Four small rubber legs are glued below, they provide vibration isolation from the surface.
Equipment
Supplied in a cardboard box with a branded red and white color scheme. All the main characteristics of this acoustics are printed on it in several languages, including Russian.
Appearance of Retail-packaging of acoustics
The package bundle is minimal - the box contains only the speakers themselves, which are wrapped in cellophane and inserted into foam inserts (that is, they do not "shine" damage during transportation), all the necessary cables and a brief instruction.
Sound
A computer sound card for the PCI-bus M-Audio Revolution 5.1 (sound controller Envy24GT, 24 bits - 192 kHz) was used as a signal source.
I liked the sound quality in general, they do not "suffer" from strict directivity - when the position of the listener changes, the level of high frequencies practically does not decrease. By ear, the amplitude-frequency characteristic is quite flat in the range of mid and high frequencies, but the upper bass (about 100 Hz) is somewhat emphasized with the middle (zero) position of the low frequency control. In principle, this is a small drawback, although sometimes noticeable. For example, when listening to dialogues in films, when an actor speaks with a low voice, he begins to "chirp" and has to muffle the bass with the LF regulator, but in this case, a lack of bass below 90-100 Hz becomes noticeable.
When listening to electronic and rock music, such an emphasis has no negative effect. The HF regulator changes the level of the corresponding range over a very wide range - you definitely won't have to turn it to the maximum. The power reserve is good, distortions noticeable by ear begin only at very high volumes.
Conclusion
If you are looking for a budget stereo pair with acceptable sound quality, then the Sven SPS-700 is a good choice. The power of this acoustics is quite enough to fill a room with an area of \u200b\u200b20-25 square meters with sound. If you wish, you can add an active subwoofer to these speakers, which will help equalize the frequency response in the low frequency range, and the bass will become much deeper, although it is quite good without it, with a few exceptions described above.
Summary
Pros:
Attractive price, generally good sound quality. The bass reflex output is routed to the front panel, it is possible to connect an active subwoofer. Convenient location of regulators.
Minuses:
Emphasizing bass around 100 Hz, inconvenient location of the power indicator (on the rear panel). Sub-optimal choice of connectors.
