Monoprice Commercial Audio 240W 5ch 100/70V Mixer Amp with Microphone Priority (NO LOGO)
Product # 18805
UPC # 889028047910
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Hows does the EMC function work? I would like to use this for announcements and have the audio stop when someone is on the microphone. Do you offer a microphone that would work with this product?
Michael M
on Nov 13, 2018
BEST ANSWER: The mic priority and EMC are different functions. The Mic Priority that you are asking is an easy setting. Use the MIC 1 Input on the front of the amp. Adjust the Mute dial on the back to set how much other audio is allowed to pass. if you want total mute then turn the dial all the way. You can use any mic with a 1/4" cable Balanced or Unbalanced (TS, TRS). It is best to use a mic with its own on/off switch because the mute will engage anytime the system "hears" signal from the mic. We recommend our Desktop Paging Mic.
The EMC feature allows you to connect your audio system to your fire safety alarm. When the alarm is triggered the Audio will mute except for Mic1 so you can give evacuation instructions.
The EMC feature allows you to connect your audio system to your fire safety alarm. When the alarm is triggered the Audio will mute except for Mic1 so you can give evacuation instructions.
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- Dave L Staff on Nov 13, 2018
Monoprice Commercial Audio Desktop Conferencing and Paging Microphone with On/Off Button (NO LOGO)
BEST ANSWER: The mic priority and EMC are different functions. The Mic Priority that you are asking is an easy setting. Use the MIC 1 Input on the front of the amp. Adjust the Mute dial on the back to set how much other audio is allowed to pass. if you want total mute then turn the dial all the way. You can use any mic with a 1/4" cable Balanced or Unbalanced (TS, TRS). It is best to use a mic with its own on/off switch because the mute will engage anytime the system "hears" signal from the mic. We recommend our Desktop Paging Mic.
The EMC feature allows you to connect your audio system to your fire safety alarm. When the alarm is triggered the Audio will mute except for Mic1 so you can give evacuation instructions.
The EMC feature allows you to connect your audio system to your fire safety alarm. When the alarm is triggered the Audio will mute except for Mic1 so you can give evacuation instructions.
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- Dave L Staff on Nov 13, 2018
Monoprice Commercial Audio Desktop Conferencing and Paging Microphone with On/Off Button (NO LOGO)
The EMC input is for an unbalanced Mic. I suspect a switched mic would work best. When a signal is present at the EMC input all other input signals are "ducked" (adjustable mute level, up to 30 db) so the EMC mic has precedence.
I have seen such mics on the Monoprice web site, in the past, some offered with other products
I have seen such mics on the Monoprice web site, in the past, some offered with other products
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- Charles H on Nov 13, 2018
- Purchased on Nov 13, 2018
So the EMC function only works with the Mic 1 input. When the Mic is triggered the emc will cut out all other inputs other than the mic 1 input. Our tech that did our PA system install just piggybacked 2 mics into the Mic 1 input so that both would trigger the EMC. We used the shure 515SBG-18X in our setup
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- Juan D on Nov 14, 2018
- Purchased on Jul 12, 2018
We installed this for a client who was having trouble. Worked well, is a great unit. The 2 screw terminals on the rear are for the override input which normally would be a microphone. Shuts down the music when it gets an input signal.
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- bill m on Nov 13, 2018
- Purchased on Oct 29, 2018
The EMC functions works really well and we picked up an inexpensive wireless mic and receiver to plug into the front audio port.
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- Ryan C on Nov 13, 2018
- Purchased on Apr 29, 2018
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I have 10 x 70v horn speakers. Will these amplifier be able to power all of the 10 speakers?
Fernando R
on Nov 23, 2018
BEST ANSWER: It really depends on how much power you will put through your speakers. I would tap the speakers (assuming they are all equal) at about 20W. It should be plenty for the home space. Have not had any problems with these amps, since the last 7 years. I buy 6-10 amps every year for commercial installs and have 0 complaints. RP
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- Rajesh Patel / Hyatt C on Nov 23, 2018
BEST ANSWER: It really depends on how much power you will put through your speakers. I would tap the speakers (assuming they are all equal) at about 20W. It should be plenty for the home space. Have not had any problems with these amps, since the last 7 years. I buy 6-10 amps every year for commercial installs and have 0 complaints. RP
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- Rajesh Patel / Hyatt C on Nov 23, 2018
That depends on the wattage of your speakers. If the 70v speakers dont have tapped transformers to set your power level, you will need to get them. I would limit the power of each speaker so that the total does not exceed the output of the amplifier.
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- Michael K on Nov 23, 2018
Depends should be able to. What is the wattage on the horn? 250w divided by 10 is 25watts available per horn. Most 70volt speakers have a 'tap setting' that allows you to adjust the wattage on the speaker to fit within the range of the amp.
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- dennis e on Nov 23, 2018
It depends on the wattage you are driving the speakers at. At 4. 6 or 8 watts you should be fine but at 10 or higher you will most likely be over driving the amp. 10 wats may quell but i cannot remember the amount of overhead loss of this amp
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- Jeff L on Nov 23, 2018
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Has anyone had any issues with this skipping songs?
Shae F
on Aug 12, 2021
BEST ANSWER: There is no way this would cause songs to skip. It is only an amplifier. You still have to connect a media player to it. There is nothing in this piece of equipment that would cause it to skip songs.
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- Dan R on Aug 12, 2021
- Purchased on Mar 1, 2021
BEST ANSWER: There is no way this would cause songs to skip. It is only an amplifier. You still have to connect a media player to it. There is nothing in this piece of equipment that would cause it to skip songs.
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- Dan R on Aug 12, 2021
- Purchased on Mar 1, 2021
That amp only plays the music that goes to it. If your music is skipping it's the source to the amp.
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- gerald e on Aug 12, 2021
- Purchased on May 18, 2021
This is an amp only, so it will play whatever audio is run through it. It cannot skip anything.
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- Michael D on Aug 13, 2021
- Purchased on May 18, 2021
This is an amplifier not a streamer. Can you elaborate on what you mean by "skipping songs"?
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- Michael M on Aug 12, 2021
- Purchased on Apr 1, 2021
Have had no problems with amp, would suspect the source device plugged into the amp.
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- Terry B on Aug 12, 2021
- Purchased on Aug 6, 2019
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I want to use this at a football field to call youth football games and play music during breaks/time outs. This would be connected to a pair of outdoor 8 ohm speakers. Would this work for that purpose and would the output be stereo from the music source?
Jude L
on Aug 17, 2022
BEST ANSWER: You could use it for that depending on the speakers. It’s rare that two speakers would be enough for a football stadium/field. If it’s a permanent installation, you should consider several speakers at 70v. If I remember correctly, this is a mono amp not stereo. Which is what you want for announcements and music.
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- Kyle L on Aug 18, 2022
- Purchased on Dec 21, 2021
BEST ANSWER: You could use it for that depending on the speakers. It’s rare that two speakers would be enough for a football stadium/field. If it’s a permanent installation, you should consider several speakers at 70v. If I remember correctly, this is a mono amp not stereo. Which is what you want for announcements and music.
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- Kyle L on Aug 18, 2022
- Purchased on Dec 21, 2021
This is not a stereo amplifier. It is designed primarily as a voice announcement amp driving 70v horns. It's not ideal but it would work in your scenario if you are primarily using it for public address announcements and you don't mind the music being mono.
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- Doug Sebens J on Aug 17, 2022
- Purchased on Sep 12, 2021
Yes this will work that way, or you can use the XLR outputs to speakers that are powered and the mic will connect to the mic in with XLR
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- Richard M on Aug 23, 2022
This is 70v amp answer is no.
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- ATLANTIC PROFESSIONALS L on Aug 18, 2022
- Purchased on Sep 28, 2021
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Can we put two 8ohm speakers on this system? How would we connect two speakers to the amp? It is unclear from looking at the back.
mckane d
on Jan 22, 2019
BEST ANSWER: Use one of the COM connections for the negative speaker lead and the 4-16Ω connection for the positive.
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- Dave L Staff on Feb 1, 2019
BEST ANSWER: Use one of the COM connections for the negative speaker lead and the 4-16Ω connection for the positive.
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- Dave L Staff on Feb 1, 2019
Yes. Remember this is not a stereo amp.
On the 4-16 ohm terminal, hook the two speaker plus wires to the 8 ohm speakers in parallel, and the minuses to the common screw.
this amp also allows for many more speakers to be run with the 70 or 100 volt taps (with the appropriate transformers) if you want more..
On the 4-16 ohm terminal, hook the two speaker plus wires to the 8 ohm speakers in parallel, and the minuses to the common screw.
this amp also allows for many more speakers to be run with the 70 or 100 volt taps (with the appropriate transformers) if you want more..
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- Charles H on Feb 2, 2019
- Purchased on Nov 13, 2018
Yes, connect them to the 4-16 ohm screw terminal on the back.
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- KELVIN F on Feb 1, 2019
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how many speakers can you run off this amp?
A shopper
on Jul 11, 2019
BEST ANSWER: If you are unfamiliar with constant voltage speaker systems I would recommend you take a look at the manual that is available for download from the product page at the bottom of the Full Specs tab. Page 8 gives a good explanation of 70V systems.
If you run the amp in 4-8Ω mode you can only run 2 8Ω speaker in parallel. This will provide 120W to each speaker and deliver a HiFi full range sound. Paired with our Sycamore, Amber, Alpha, or Caliber in-wall and ceiling speakers it will sound really good.
70V operation will reduce bandwidth a little for slightly less than HiFi sound (about 50Hz - 15kHz). The advantage of this mode is the ability to run a lot more speakers. If you use our 14887 and select the 3W tab you could run up to 64 speakers.
If you run the amp in 4-8Ω mode you can only run 2 8Ω speaker in parallel. This will provide 120W to each speaker and deliver a HiFi full range sound. Paired with our Sycamore, Amber, Alpha, or Caliber in-wall and ceiling speakers it will sound really good.
70V operation will reduce bandwidth a little for slightly less than HiFi sound (about 50Hz - 15kHz). The advantage of this mode is the ability to run a lot more speakers. If you use our 14887 and select the 3W tab you could run up to 64 speakers.
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- Dave L Staff on Jul 12, 2019
Monoprice Commercial Audio 50W 6.5in Coax Ceiling Speaker with ABS Back Can and Grill 70V (NO LOGO)
BEST ANSWER: If you are unfamiliar with constant voltage speaker systems I would recommend you take a look at the manual that is available for download from the product page at the bottom of the Full Specs tab. Page 8 gives a good explanation of 70V systems.
If you run the amp in 4-8Ω mode you can only run 2 8Ω speaker in parallel. This will provide 120W to each speaker and deliver a HiFi full range sound. Paired with our Sycamore, Amber, Alpha, or Caliber in-wall and ceiling speakers it will sound really good.
70V operation will reduce bandwidth a little for slightly less than HiFi sound (about 50Hz - 15kHz). The advantage of this mode is the ability to run a lot more speakers. If you use our 14887 and select the 3W tab you could run up to 64 speakers.
If you run the amp in 4-8Ω mode you can only run 2 8Ω speaker in parallel. This will provide 120W to each speaker and deliver a HiFi full range sound. Paired with our Sycamore, Amber, Alpha, or Caliber in-wall and ceiling speakers it will sound really good.
70V operation will reduce bandwidth a little for slightly less than HiFi sound (about 50Hz - 15kHz). The advantage of this mode is the ability to run a lot more speakers. If you use our 14887 and select the 3W tab you could run up to 64 speakers.
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- Dave L Staff on Jul 12, 2019
Monoprice Commercial Audio 50W 6.5in Coax Ceiling Speaker with ABS Back Can and Grill 70V (NO LOGO)
It is a 240W amp, so if you are using 70V speakers, you can usually adjust the wattage at each speaker. Add up the wattage of all the speakers and you have the total amount that are need. On a 70V speaker, you use the wattage as the volume control at each speaker. I recently did a job where I had carpet in one area, tile in another area, and a warehouse. I used 4 watts in the tile area, 8 watts in the carpet area, and 20 watts in the warehouse. I would suggest that you not go more than 80% of the total watts that the amplifier is rated. On these particular amps, there is a fan that kicks in if you start to drive more than about 50% of the output capacity. If all of your speakers are low watts, then you can have a lot of speakers.
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- Kent on Jul 11, 2019
At 70v, Use 80% of total amp output. Approx. 192W/wattage of speaker = number of speakers.
The tap on speakers usually will be less than 15w per speaker for background music.
The tap on speakers usually will be less than 15w per speaker for background music.
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- mark r on Jul 11, 2019
- Purchased on Mar 20, 2019
I have four but am purchasing another and plan to run 8.
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- Richard L on Jul 11, 2019
- Purchased on Dec 21, 2018
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Can this sum a stereo signal to mono?
New User U
on May 15, 2021
BEST ANSWER: If you wire this up in 70v it will be a mono signal to the speakers. If it is wired by ohms then it will be a stereo signal. I don't believe there is a switch to change between mono and stereo. Hope that helps
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- Dan R on May 21, 2021
- Purchased on Mar 1, 2021
BEST ANSWER: If you wire this up in 70v it will be a mono signal to the speakers. If it is wired by ohms then it will be a stereo signal. I don't believe there is a switch to change between mono and stereo. Hope that helps
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- Dan R on May 21, 2021
- Purchased on Mar 1, 2021
Yes .The amp doesn't have L,R output.
Only one out you can choose and use it for your needs.
Only one out you can choose and use it for your needs.
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- Chris J on May 21, 2021
- Purchased on Apr 2, 2021
Yes, I have a stereo source feeding mono 70V sepakers.
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- Jeff W on May 21, 2021
- Purchased on Mar 29, 2021
Yes, that is how I am using it.
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- Michael M on May 21, 2021
- Purchased on Apr 1, 2021
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Is this unit UL rated?
A shopper
on Apr 27, 2018
BEST ANSWER: I looked at the unit, and did not see a UL sticker on the back.
It is a simple mixer amp, so far we have had no trouble with it.
It is a simple mixer amp, so far we have had no trouble with it.
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- Sam M on Apr 30, 2018
- Purchased on Mar 23, 2018
BEST ANSWER: I looked at the unit, and did not see a UL sticker on the back.
It is a simple mixer amp, so far we have had no trouble with it.
It is a simple mixer amp, so far we have had no trouble with it.
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- Sam M on Apr 30, 2018
- Purchased on Mar 23, 2018
i don't believe so or it's not listed .. its approved for Canada but it works great so far
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- Randy B on Apr 27, 2018
Don't know. There is no UL rating listed in owner's manual and no UL on back of unit.
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- GENE S. on Apr 27, 2018
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After reading the manual I realize that the entire system consisting of the subwoofer and the 4 satellite speakers acts like a single 70v device on my 70v chain of speakers. If I am understanding this correctly, I need to use the speaker wire size guidance for the low impedance speaker to connect the satellites to the subwoofer (e.g. so larger gauged wire) while still user smaller gauge wire from AMP to subwoofer?
Luis S
on Jan 10, 2018
Monoprice Commercial Audio 240W 5ch 100/70V Mixer Amp with Microphone Priority (NO LOGO)
Monoprice BGM 4.1 Indoor Outdoor 6.5-Inch sub with 4 x 2.5-Inch Satellites, 70V and 8-ohm incl Mounting Hardware (No Logo)
BEST ANSWER: The 4 satellites do connect to the sub as low imp. The power to each satellite is pretty small so I would not worry to much about wire gauge unless you are running more than 30 feet them.
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- Dave L Staff on Jan 15, 2018
BEST ANSWER: The 4 satellites do connect to the sub as low imp. The power to each satellite is pretty small so I would not worry to much about wire gauge unless you are running more than 30 feet them.
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- Dave L Staff on Jan 15, 2018
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Can this unit power 2 speakers per channel so... 10 total speakers? this is the speaker I want to use: "Monoprice Caliber Slim Bezel In-Ceiling Speakers, 8in Fiber 2-Way (pair) / 8 ohms 80 watts RMS 160 watts peak"
Eric W
on May 22, 2021
BEST ANSWER: This is a single output device. The "5 channels" are inputs. Yes you can drive 10 speakers but they MUST be 70v set to 20 watt tap.do not plan on 8 ohm versions or you will be doing some interesting parallel/series configuration.
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- Charles B on May 22, 2021
BEST ANSWER: This is a single output device. The "5 channels" are inputs. Yes you can drive 10 speakers but they MUST be 70v set to 20 watt tap.do not plan on 8 ohm versions or you will be doing some interesting parallel/series configuration.
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- Charles B on May 22, 2021
No the 5 Chanel’s are relating to input. It will run 10 speakers but O LY 70 volt speakers.
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- Bobby W on May 23, 2021
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how is the emc connected is it normally open or use a relay to close contacts to close terminals for overall muting?
chris B
on May 19, 2017
BEST ANSWER: Your emergency system will close the loop which mutes all inputs except for Mic 1.
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- Dave L Staff on May 30, 2017
BEST ANSWER: Your emergency system will close the loop which mutes all inputs except for Mic 1.
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- Dave L Staff on May 30, 2017
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what is the return policy on this commercial audio 240 watt amp?
A shopper
on Jun 22, 2017
BEST ANSWER: Thanks for your interest in this Commercial Audio product. All of our Commercial Audio products have a 30 day money back guarantee and a one year hassle free warranty.
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- Dave L Staff on Jun 23, 2017
BEST ANSWER: Thanks for your interest in this Commercial Audio product. All of our Commercial Audio products have a 30 day money back guarantee and a one year hassle free warranty.
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- Dave L Staff on Jun 23, 2017
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Can the 70V and low impedence outputs be used simultaneously?
A shopper
on Apr 28, 2018
BEST ANSWER: No, you will damage the amp if you attempt to use 70V with low impedance speakers. You can use the stereo Line Out to drive and separate amplifier, like our Unity series amps, to use High fidelity speaker
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- Dave L Staff on May 4, 2018
Monoprice Unity 100-Watt Bridgeable Power Amp
BEST ANSWER: No, you will damage the amp if you attempt to use 70V with low impedance speakers. You can use the stereo Line Out to drive and separate amplifier, like our Unity series amps, to use High fidelity speaker
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- Dave L Staff on May 4, 2018
Monoprice Unity 100-Watt Bridgeable Power Amp
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What types of cables are needed/used for the output(s)?
A shopper
on Jul 11, 2018
BEST ANSWER: Thank you for your question.
This item would only have speaker wire connections for the audio output.
This item would only have speaker wire connections for the audio output.
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- Tyler C Staff on May 17, 2019
BEST ANSWER: Thank you for your question.
This item would only have speaker wire connections for the audio output.
This item would only have speaker wire connections for the audio output.
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- Tyler C Staff on May 17, 2019
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Before I make the final purchase I would like to know if I could use a wall keypad with a CAT6 Ethernet cable to control this device?
A shopper
on Jul 13, 2021
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what input would you use if the source is a sirius xm radio wifi radio which has l/r stereo or mono rca outputs?
RSC B
on Mar 28, 2023
BEST ANSWER: use a 3.5 mm to stereo audio cable. 3.5mm to the xm radio and red/white to the amplifier.
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- Duran B on Apr 14, 2023
BEST ANSWER: use a 3.5 mm to stereo audio cable. 3.5mm to the xm radio and red/white to the amplifier.
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- Duran B on Apr 14, 2023
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I just purchased one of these and upon initial power on with no speakers the PROT light comes on for a couple seconds, I here a soft click and the light goes off. is this normal operation?
Shawn K
on Apr 11, 2023
BEST ANSWER: As a general practice, It is not recommended to turn most amplifiers on without have a "Load"- Speakers. Many amplifier manufacturers have the same occurrence when turning their products on. It isn't a defect and you shouldn't have any issues, but it is best to connect speakers to it. If the light does the same thing, it almost certainly is indicating the internal Protection Circuit is functioning properly. If the light stays on, it means the speakers are wired incorrectly or that the impedance is too low for the amp to operate properly. I installed on for a Customer last Summer and it has worked flawlessly with more than enough power for the 8 70 Volt Speakers attached to it tapped at 30 Watts Each.
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- Jeff M on Apr 14, 2023
- Purchased on Sep 28, 2022
BEST ANSWER: As a general practice, It is not recommended to turn most amplifiers on without have a "Load"- Speakers. Many amplifier manufacturers have the same occurrence when turning their products on. It isn't a defect and you shouldn't have any issues, but it is best to connect speakers to it. If the light does the same thing, it almost certainly is indicating the internal Protection Circuit is functioning properly. If the light stays on, it means the speakers are wired incorrectly or that the impedance is too low for the amp to operate properly. I installed on for a Customer last Summer and it has worked flawlessly with more than enough power for the 8 70 Volt Speakers attached to it tapped at 30 Watts Each.
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- Jeff M on Apr 14, 2023
- Purchased on Sep 28, 2022
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In the user manual, pg. 7 item 16: for 'unbalanced' wouldn't that actually be TS instead of TRS?
What is the meaning of 'stereo' ?
On item 17: are the RCA inputs connected with resistance to match 'line level' to 'mic level'?
What is the meaning of 'stereo' ?
On item 17: are the RCA inputs connected with resistance to match 'line level' to 'mic level'?
New User U
on Mar 17, 2021
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Rated 5 out of 5
Simply awesome!
Fantastic AMP!! Easy to use, very clean. I wish channel one had rear plugs also to keep the install clean.
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Rated 5 out of 5
great bang for the buck
versatile, universal, clear audio, plenty of power, usable inputs
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