User manual JBL 4312SX

[. . . ] 12 Inch 3-Way Studio Monitor Model 4312SX Owner's Manual The 4312SX is an upgraded version of the classic 4312 Studio Monitor. [. . . ] In addition, to avoid acoustical interference with the floor surface, it is recommended that you set a sturdy base (cube or block shaped) with a thickness of 5 ­ 20 cm under the speakers. 4: Connection *Caution When connecting the speakers to the amplifier, always do so after turning off the power. Connecting the speakers while the power is on may damage the amplifier or the speakers. The positive terminals of the speaker have a red ring, and the negative terminals have a black ring. The speakers are designed so that when a positive signal is applied to the positive terminal, the woofer moves in the forward direction (positive phase operation). In order to safely and securely connect to the terminals, we recommend that you use the Y terminals or banana plugs on the cable ends. 5. Attenuator Adjustment Independent, continuous variable attenuators are used for each unit to adjust the MF (mid-frequencies) and HF (highfrequencies) levels to the speaker's woofer level. Make adjustments appropriate to the reverb in the actual room, and to your liking. In general, for most speakers, it takes about 1 ­ 2 months after initial use until the unit's vibration system yields optimum performance. [. . . ] Please avoid exposing the speaker to strong lighting such as from lighting equipment or direct sunlight and avoid placing the speakers in high temperatures such as near the air conditioner exhaust pipe or a heat radiator. 8: Specifications Type Units used 3-way Bookshelf 30 cm pure pulp cone woofer 2213H 100 mm titanium diaphragm MF 904 25 mm pure titanium dome AW025 6 200 W (RMS) 93 dB (2. 83 V/1m) 45 Hz ­ 40 KHz (-6 dB) 400 Hz, 3800 Hz 362 x 597 x 298 mm 21. 8 kg Impedance Allowable input Output sound pressure level Frequency response Crossover frequencies Dimensions (W x H x D) Weight [. . . ]