Anonim

SPORT AND RECREATION

Music Salon

BAS: PORTRAIT 6 ON 9

There is hardly a motorist who has installed an inexpensive audio system and is quite pleased with its bass capabilities.

Anatoly FOMIN, George KHOKHLOV

Like it or not, the bass in the car is almost always lacking. One reason is the high noise level in the car, in which it is the low frequencies that dominate. And therefore, the requirements for a high-quality car audio system dictate the installation of a separate ultra-low-frequency speaker (subwoofer) and an additional amplifier. Unfortunately, this greatly increases the price of “music”. Is there a compromise solution? Of course - install more speakers.

It is known that small speakers are not able to reproduce low-frequency sounds with sufficient volume. The dependence is simple: the larger the diffuser area, the ceteris paribus the louder the bass. So speakers with a diameter of 10 and 13 cm (4 and 5 inches) have nothing to do here. Loudspeakers of 16.5 cm (6.5 inches), when properly installed, can already claim a bass part, and with a diameter of 20 cm (8 inches) they can cope with it without problems. Most manufacturers attribute 8-inch speakers to “real” subwoofers. However, it’s not so simple - large speakers really give good bass, but placing them in a car is still a puzzle. In fact, the only place in the car where they can be attached is the rear shelf, however it is often narrow. Therefore, firms make, as a rule, oval speakers measuring 6 by 9 inches (approximately 155x225 mm). By the area of ​​the diffuser they are only slightly inferior to round 8-inch ones and are able to quite satisfactorily reproduce bass parts even when working with the built-in radio amplifier.

In addition to the main bass head, they always have a high-frequency, and often more than one. However, to say that the number of “tweeters” determines the sound quality is reckless. Very often, the “super-tweeter” (second tweeter) is piezoceramic and its contribution to the sound picture is small. When both tweeters are electrodynamic, this allows you to expand the radiation pattern at the highest frequencies. The disadvantage of this scheme is that high-frequency heads connected in parallel sharply reduce the system impedance, which, when working with some amplifiers, causes a noticeable change in the sound tone.

Structurally, the loudspeakers are most often made in a three-way pattern, with a piezoceramic “super-treater”. The main tweeter usually has a conical diffuser made of polymer film or paper. The low-frequency diffuser can be both polypropylene and paper. Each has its own advantages and disadvantages, but moisture resistance of paper (even laminated) is worse. To suspend a diffuser, rubber or polyurethane is most often used. The latter tolerates somewhat worse long-term exposure to heat and sunlight. The vast majority of 6x9 loudspeakers allow installation from the inside and have a thrust rim along the rim of the diffuser holder. The presence of a protective grill is a rule without exception.

In our test, systems worth up to $ 70 per pair were tested.

On the graphs of the frequency response of sound pressure, there is a green curve along the axis of the speaker, red at an angle of 500. For an “ideal” speaker, the graphs should match and be as even as possible.

JVC CS-HX 6932

Made in Indonesia.

Three-way loudspeaker. The material of the main diffuser is blue plastic. Diffuser suspension - rubber.

+ Attractive appearance. Good workmanship. Acceptable bass reproduction.

- Poor reproduction of high frequencies. High level of nonlinear distortion. Thin support gasket.

8th place

URAL AS-U6956

Made in Russia by the Sarapul Radio Plant.

Three-way loudspeaker. The material of the main diffuser is polypropylene.

+ Acceptable workmanship. Good bass reproduction. The average level of non-linear distortion.

- Poor reproduction of high frequencies. “Cosmetic” rim defects.

7th place

Prology SX-6937

Manufacturer - Saturn High-Tech, USA. Country of origin not specified.

Three-way loudspeaker. The material of the main diffuser is polypropylene.

+ Wide beam pattern. No dips at mid frequencies.

- Inadequate reproduction of high frequencies. High level of nonlinear distortion. Mediocre workmanship.

6th place

Daewoo PC-693

Made in Korea.

Three-way loudspeaker. The material of the main diffuser is polypropylene. Diffuser suspension - polyurethane.

+ Low level of nonlinear distortion. Soft rim seal. Good bass reproduction.

- Very weak high frequency reproduction. Coarse protective grill.

5th place

LG TCE-6945

Made in Korea.

Four way loudspeaker. The main diffuser material is paper. Diffuser suspension - fabric.

+ Low level of nonlinear distortion. Good treble reproduction. Good workmanship.

- The average level of bass reproduction. Modest finish.

4th place

RCF RC 693

Made in China.

Four way loudspeaker.

+ Low level of nonlinear distortion. Excellent bass reproduction. Equal frequency response.

- Low sensitivity. Mediocre workmanship.

3rd place

Pioneer TS-A6947

Made in Malaysia.

Two-way loudspeaker. The material of the main diffuser is polypropylene. Diffuser suspension - fabric.

+ Equal frequency response. Good reproduction of the entire frequency spectrum. High quality workmanship.

- Narrow radiation pattern at high frequencies. Increased level of non-linear distortion.

1-2 place

Kenwood KFC-6956

Made in Malaysia.

Two-way loudspeaker. The material of the main diffuser is polypropylene. Diffuser suspension - fabric.

+ High sensitivity. Good reproduction of the entire frequency spectrum. High quality workmanship. Wide beam pattern.

- Average bass capabilities.

1-2 place