User manual BIAMP EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23

[. . . ] Do not defeat the safety purpose of the polarized or grounding-type plug. When the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet. Use only attachments/accessories specified by the manufacturer. Use only with the cart, stand, tripod, bracket, or table specified by the manufacturer or sold with the apparatus. When a cart is used, use caution when moving the cart/apparatus combination to avoid injury from tip-over. Unplug this apparatus during lightning storms or when unused for long periods of time. [. . . ] CAUTION: Do not remove or defeat the ground prong on the AC Power Cord, as this constitutes a shock hazard. The Fuse Clip may be removed by first detaching the AC Power Cord, then prying the Fuse Clip out from above, using a flat-blade screwdriver in the notch provided. The Fuse Clip contains the standard fuse for the selected AC operational voltage. The standard fuse is held in the clip, and becomes the actual AC fuse when the Fuse Clip is installed. Voltage Selector Switch: For 115 VAC operation, slide until 115V is displayed. Channel Level Controls: These controls adjust the input signal level for each channel. After setting appropriate levels at the signal source, then adjust the Channel Level Controls for the desired output volume from the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23. In mono-bridge mode, Channel 1 becomes the active input and Channel 2 input is inactive. As an option, the Channel Level Controls may be mounted to the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 front panel. CAUTION: Disconnect the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 from AC power before removing the top panel. Remove the plugs from the front panel mounting holes (save them for the rear panel mounting holes). In order to protect the amplifier (and in case of amplifier failure, the speaker transformers) one side of the 70V line must be capacitively isolated as shown below. This is necessary since the bandwidth of the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 extends well into the low-frequencies, and some protection is required to keep the amplifier from seeing the extremely low impedance of the 70V line below 100Hz. The two 100uF / 100V non-polar capacitors wired in parallel form a High Pass Filter at 100Hz. Any equalizer in the signal path should not have the low-frequencies boosted, since this will excessively load the amplifier. If more low-frequency is needed, a directly driven sub-woofer should be used to extend the low-frequencies below 100Hz. 325W/4 output 2 325W/4 output 1 --- + + --- 100uF 100V nonpolar 100uF 100V nonpolar speaker negative speaker positive 8 PRECAUTIONS Be sure that power to the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 is turned off when making all connections. High voltages can be present at the speaker terminals, and static pops or broken ground connections on cables can cause speaker damage. Use speaker wire of sufficient gauge to prevent power loss and damping factor reduction. Larger size wire has a lower resistance and permits longer cable runs. Before turning power on, set the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 level controls to the fully counter-clockwise (off) position. The EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 is designed to be used in a standard 19" equipment rack or on a flat surface. The EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 has heat-sinks on each side panel for passive cooling. [. . . ] If the fuse needs to be replaced, use the same value and type fuse only. If no sound is heard, turn the level controls back to their original counter-clockwise position and check to confirm there is an input signal. Also check for proper wiring at all input and output connections, and verify that the cables being used are undamaged and are in good condition. If the EQ-140, EQ-220, EQ-230, EQ-290 MX-2, MR-140, SX-35, SX23 should require service, please contact Biamp Systems Customer Service at 1-800-826-1457 or (503) 641-7287. 9 SPECIFICATIONS Maximum Power Output @ 2kHz (120 VAC) both channels driven into 4 ohms both channels driven into 8 ohms mono bridge into 8 ohms Signal-to-Noise Ratio (0-30kHz) rated power into 8 ohms Total Harmonic Distortion 20Hz-20kHz @ rated power 2kHz @ rated power (typical) Intermodulation Distortion (SMPTE) Frequency Response (20Hz-20kHz) Input Impedance balanced unbalanced Sensitivity Power Requirements Power Consumption Dimensions height (3 rack spaces) width depth Weight 5. 25 inches (133mm) 19 inches (483mm) 11 inches (279mm) 33 lbs. [. . . ]