·rated power. The rated power of the loudspeaker can only be determined by 75% of the rated power of the power amplifier in order to ensure power matching and device safety.
· Rated impedance. The rated impedance of the loudspeaker shall not be less than the rated load impedance of the amplifier. Common rated impedance of 4 Europe, 6 Europe, 8 Europe, 16 Europe and so on. Transistor, integrated circuit amplifier generally do not have the output transformer, load impedance in 4-6 Europe, so the election 8 ohphone is appropriate.

· Efficiency range. Should be selected in the 30 dB range of wide frequency range and flat speakers.
· Sensitivity. In more than 90 decibels to meet the needs of home audio.
· Number of frequency bands. Three frequency divider speakers than the two-way speaker to increase the way the middle of the speaker unit, so that even more powerful midrange, speakers can also withstand greater power, output more volume.
· The diameter of the speaker: subwoofer caliber, not the bigger the better, because the larger the caliber, the cone vibration more deformation, resulting in vibration, causing distortion.
Music lovers in the choice of speakers will be painstakingly, but in addition to comparing the speaker's technical indicators and listening evaluation, the speaker there are some easy to overlook the problem, the same sound quality and no small relationship.

"pot"

New speakers need to go through a period of time to use, in order to play its excellent performance, which is the so-called "pot". And different speakers "pot" the process of great differences, generally ranging from dozens of hours to dozens of days.

Shape small bookshelf speaker due to physical conditions, the bass dynamic range can not be too large, so even if its low-frequency extension is very low, its practical significance is not large.

Caliber

Small-caliber speaker unit can also get a good listening effect, but this speaker is only suitable for close listening.

Terminals

Two-line speaker, with two sets of speaker terminals, such as for the ordinary connection, two sets of terminals in parallel, then the speaker line must be connected to the middle and low frequency unit that a pair of posts, or because the two sets of terminals in parallel Of the connection or the impact of copper, low-frequency replay effect will be mostly lost.

Tripod between the speaker and the tripod, preferably with three small pieces of foam double-sided adhesive to be fixed.

Out of mouth

Out of the mouth set in the back of the bass reflex speakers, and the distance from the back wall to be adjusted in order to achieve normal and reasonable low-frequency performance.