System installers in search of a quality installation mixer / amplifier will be impressed with the TOA Electronics A-848D, a flexible six-channel mixer / 480W amplifier that's ideal for paging announcements and BGM applications in schools, offices, and supermarkets. The A-848D is equipped with four mic/line inputs, two auxiliary inputs, and two 900-Series module slots. The amplifier offers a single speaker output that's switchable between 4 ohms and 70V operation. The integrated Power Factor Correction (PFC) circuit prevents damage from faulty power. The unit offers several functions, including volume control, priority, chime, and remote confirmation. In addition, it is equipped with a 2-channel input Bus of Audio and Duck, and the signal processing function. The A-848D includes a power cord, several block terminal plugs, a volume control cover, and rackmount hardware.

Lightweight Digital Power Amplifier    4 Mic/Line Inputs + 2 Aux Inputs    Two 900-Series Module Slots    Control Input for Emergency / Priority    Voice Detection Function with Ducking    Treble and Bass Controls    Switchable Speaker Output: 4 Ohms / 70V    Remote Control via Windows Web Browser    DSP: Filters, EQ, Gate, Limiter, Ducker    Includes Terminal Blocks and Power Cord

• 480W power amplifier output
• Lightweight owing to the built-in digital power amplifier unit
• Emergency broadcast and priority broadcast activated by way of the control input (contact)
• Voice detection function that allows the priority broadcast to be activated by voice
• Priority setting function
• Remote confirmation function that allows you to confirm the unit’s status through the web browser using a PC
• Switchable speaker output (4 ohms or 70 V)
• Module slots provided for mounting up to 2 units of 900 Series modules
• Electronically balanced 4-microphone inputs (MIC 1 to MIC 4) with Input setting switches
• Fine sound adjustment possible by connecting a signal processor like an equalizer between the pre-amplifier output and the power amplifier input
• Bass and treble tone control knobs
• Output level meter
• Master volume control knob to simultaneously adjust all input levels
• Remotely controllable master volume
• Built-in chime unit (1-note chime, 2-note chime, and ascending 4-note chime)
• Equipped with the following signal processing functions: Dynamic feedback filters, Equalizer (3 points), Gate, Software volume, Limiter, and Ducker

Related Questions and Answers

Q: 1. Got a pair of yamaha cbr15 inch speakers. Will px5 be suitable for the speakers

A: Yes, the Yamaha PX5 Stereo Power Amplifier is compatible for use with a pair of Yamaha CBR15 Speakers.

Q: 2. if this amp is connected to a stereo receiver, do the speakers connect to the amp or receiver?

A: The speakers will connect to the amp as the amp is what is providing the power to the passive speakers

Q: 3. Are the XLR modules included?

A: XLR modules are not included with the Toa Electronics A-912MK2. They can be found here: https://bhpho.to/40gEUzM

Q: 4. how do i set the jumpers in back i cant understand the diagram on the back?

A: The jumper settings on the ISA Ti will depend on the mode you are using the amplifier. Switch 1&2 correspond to the limiter and filter for channel 1, switch 9&10 correspond to the filter and limiter on channel 2. The center switches (3-8) set the amplifier mode: Stereo parallel or Bridged. Settings are shown on the rear panel diagram. If you are still having issues please contact a Pro Audio Rep here for assistance at 800-606-6969, or email a href= http://audio@bandh.com target= _blank audio@bandh.com/a

Q: 5. How loud do the fans get, do you hear them?

A: The Yamaha PX8 is made primarily for live sound reinforcement. In that environment, you would not hear the cooling fans in the PX8 amplifier.

Q: 6. Does this amp provide phantom power at 48V? I don't see it referenced in the manual.

A: The Toa Electronics BG-235 Amplifier & Mixer does not provide 48v phantom power.

Q: 7. I'm not getting any signal. Anything I can do?

A: That doesn't give me much to go on. What modules do you have installed? What are you using for a source? Is the unit powering on? Did you check the fuses? What are you using it for? I don't know if you are a newbie or a audio professional, so I don't really know where to start. I'm not an audio pro myself, but did install one of these recently, so, if you can give me as much information as you can maybe I can help you out.

Q: 8. My speakers are rated max 380 watts RMS,is the PX5 too powerful to power my fronts?

A: No. Not too powerful. As long as the speakers are 8 ohm. 500 Watt amp is a good match for 380W speakers.

Q: 9. What is the factory warranty for the PX8?

A: The Yamaha PX8 Stereo Power Amplifier has a three year limited warranty.

Q: 10. Why Is there no 70 volt output on my p912mk2?

A: The TOA P-912MKII features 4 and 8 ohm outputs as well as a 25V and 70v output on screw terminals. Please refer to page 6 of the manual for the location of this connection. http://bit.ly/1M5Yfvh