SWR Sound owner manual 750x Getting Started

Frequency Response (power amplifier)

(@ 850 watts RMS) –3dB @ 20 Hz and 40 kHz

Sensitivity (full output under clipping, 8 ohms load, 100 Hz)

Passive Input Jack: 62 millivolts

Active Input Jack: 267 millivolts

Power Amplifier (Effects Return Jack “in”): 5 volts

Input Impedance

Passive/Active Input: 800k Ohms

Active Input: 60k Ohms

Effects Return: 27k Ohms

Output Impedance

Effects Send: 100 Ohms

Tuner Send: 100 Ohms

XLR (Balanced) Out: 750 Ohms

Dimensions (depth includes handles and XLR pad) 19" W x 5.38" H x 15" D (3 rack spaces)

Weight 31 lbs.

750x – GETTING STARTED

Connecting Your Speaker Cabinets

The 750x is a mono amplifier, which makes things fairly simple. Locate the “Speaker Outputs” section on the rear of the amp. You will notice that there are four different speaker output jacks, two 1/4" type and two Speakon® type jacks. The Speakon jacks are preferable if your speaker cabinet is equipped with Speakons as well; however, you can use any of the four available jacks to connect your speaker(s) to the 750x.

Using One Speaker Cabinet

Using a speaker cable of 18 gauge or heavier (the heavier the cable, the lower the gauge), simply connect any one of the 750x’s Speaker Output jacks to the input jacks of your speaker cabinet. If your cabinet is a 4 ohm enclosure, the 750x will deliver will deliver 750 watts into it. If your cabinet is an 8 ohm enclosure, it will deliver 450 watts into it. This is a loud amplifier. Be sure to check the power handling capabilities of your speaker cabinet before connection and operation.

Using Two Speaker Cabinets

Using a speaker cable of 18 gauge or heavier (the heavier the cable, the lower the gauge), simply connect any of the 750x’s Speaker Output jacks to the input jacks of your two speaker cabinets. (You can use one 1/4" and one Speakon Output jack each if you wish; however, it is always best to use speaker cables with similar type ends.) If the cabinets are the same impedance, the same amount of power will be sent to each enclosure. If the cabinets are different impedances, more power will flow to the cabinet with the lower impedance. Since the 750x is a mono amplifier and individual cabinet levels cannot be adjusted, it is rec- ommended that you use cabinets of the same impedance when using more than one cabinet. If you use two 8 ohm cabinets—the two-cabinet setup recommended by SWR—the resulting “total” impedance will be 4 ohms, and the 750x will deliver 750 watts spread across both cabinets. Needless to say, in all cases, be sure to check the power handling capabilities and impedance of your speaker cabinet(s) before connection and operation.

750x OWNER’S MANUAL • 3