Chat Now
3-inch Powered Portable Monitor Speakers with Protective Grill (pair)
In Stock This item should ship today (12/1/2015) if ordered within 1 hour 50 minutes

3-inch Powered Portable Monitor Speakers with Protective Grill (pair)

With the prevalence of computer based music editing solutions, there is a greater need than ever for a great sounding set of small, shielded speakers, such as these 3-inch Powered Portable Monitor Speakers from Monoprice!

These monitor speakers are designed to produce a flat frequency response, which makes them perfect for use by audio professionals or anyone else looking for true and accurate audio reproduction. Powered by a built-in audio amplifier, these monitors can be used anywhere AC power is present, while magnetic shielding ensures that they will not interfere with computer monitors or television displays.

The master speaker contains the controls, connections, and built-in 30 watt amplifier (15 watts/channel). It connects to an audio source using L/R stereo RCA jacks. A 3.5mm jack on the front allows you to connect a pair of headphones, which disables the speaker output. Another 3.5mm jack on the front allows connection of an auxiliary audio source. A Bass Boost switch on the back of the speaker increases low-frequencies by 3dB, for improved volume and greater bass presence. The second speaker connects to the first using standard speaker wire.

The tweeter is a 1" silk cone design with magnetic shielding and internal damping. The 3" paper cone woofer is coated in polypropylene to produce a flexible, but incredibly strong, speaker that is capable of both accurate reproduction and loud volume levels. The woofer is magnetically shielded and uses a high-temperature voice coil, so it won't fail under heavy use. The drivers are covered with a protective grill, making them easier to transport and better for use in rough environments.

Support Files:

Speaker Type 2-way Portable Desktop Reference Monitor Speakers
Amplifier 15 watts continuous per channel into a 4-ohm load
Input Connections 1 set stereo RCA line-level inputs plus 1 stereo 3.5mm line-level jack on the front panel
Input Impedance 10K ohms unbalanced, 20K ohms balanced
Sensitivity 90dBA output SPL at 1 meter with 100mV pink noise input
Woofers 4-ohm 3" polypropylene-coated paper cone with high-temperature voice coil and magnetic shielding
Tweeters 4-ohm 1" silk cone with magnetic shielding
Frequency Response 90Hz to 20KHz
Crossover Frequency 3300Hz
SPL 101.5dB @ 1 meter
S/N Ratio > 90dB (typical, A-weighted)
Bass Boost Switchable, 0 or +3dB boost to bass frequencies
Power Requirements 100-120 VAC, 50/60Hz
Power Cable IEC 60320 C8P to NEMA 1-15
Dimensions (HxWxD) 8.1" x 5.5" x 6.0" (205 x 140 x 152 mm) each
Weight 8.6 lbs (3.9 Kg) total

Included in the Package:

  • Master speaker with built-in amplifier, controls, and connections
  • Slave speaker with speaker-level audio inputs
  • Black and red speaker wire
  • 3.5mm stereo audio patch cable
  • RCA stereo audio patch cable
  • AC power cord (IEC 60320 C8P to NEMA 1-15)
  • User's Manual

28 Reviews

78.57% of the reviewers recommend this product


Planned Obsolescence

  • Lance Haverkamp,
  •  Peyton, CO 
  • 10/2/2015 3:40:01 PM

Pros: Sound great!

Cons: Broke after 3 monthsreturning for replacement

Audio cord to device it pretty short, order an extension.

by Monoprice Administrator
Hello Lance,

Did you already receive your replacement? Please let me know so I can assist you accordingly if you have any other problems. Thank you!

John Lingo
Tech Support
Was this review helpful to you?
  • Anonymous,
  •  Uvalde, TX 
  • 8/1/2015 10:38:13 AM

I have three pairs of these speakers in my office on two computers and a TV. Good sound at a good price

Was this review helpful to you?

Amazing Speakers!

  • Nick Anderson,
  •  Burton, Michigan 
  • 7/23/2015 5:04:30 PM

Pros: Sounds great! Okay to set right next to my PC monitors without electromagnetic field problems. They have lots of volume too.

Cons: Don't sound like my PC speakers.

I've been a DJ for 21 years and I LOVE these speakers. I upgraded to a PC monitor that is IPS and has a fabulous screen but has no speakers, so I got these and they rock. I bought a second pair for my second office as well. I love that they have RCA inputs on the back for my XM receiver or PC audio and they also have the 1/8" input for my iPhone when I want to mix it up.

Was this review helpful to you?

Good Speakers

  • dave,
  •  Virginia Beach, VA 
  • 7/22/2015 5:08:17 AM

Pros: Nice looking, nice sound, fills a room.

Cons: Computer 3.5 mm jack is in front. I don't think they're meant to be computer speakers. If the 3.5mm jack was on the back I would permanently mount these in class rooms.

I keep these on hand in case a class needs speakers for a laptop or there is a problem with the room sound system. (Sort of an emergency thing.) Rooms hold about 100 people. They do the job and look nice. I've purchased about a half dozen so far and haven't had any complaints although I haven't been using them long.

by Monoprice Administrator
Hi Dave,

Glad to hear you are enjoying PID 605300! If you are looking to connect from a 3.5mm to the back of the speaker you can actually connect to the RCA inputs using a 3.5mm to 2RCA cable such as PID 5598:

Should you have any further questions regarding our products, please feel free to contact our tech support team either via live chat or via email at Hope this helps!

Gisselle B.
Tech Support

Was this review helpful to you?

Decent, Not Great...When it works.

  • Steven M Wall,
  •  Olathe, KS 
  • 7/6/2015 12:15:39 PM

Pros: The front headphone & line-in jacks are great, and one of the prime reasons I got this set. They are about what I expected. Good high and midrange sound, with decent power. Nice aesthetics and good cabinet build quality.

Cons: Sound quality has deteriorated over the course of the past year. Bass was never really present, and always needed to supplement for things such as movies/games. Power switch is on the back, which makes it more difficult to turn on and off, so I end up leaving it on more often than not. Internals are not high quality, and probably not QA'd like they should be.

After a year and half of light use for music and computer I noticed the, the sound out of the powered unit is non existent. I have to use software balancer to force near 100% right channel just to achieve a balanced sound. Plugging a headphone into the front panel exhibits the same behavior, yet plugging directly into the computer shows no signs of the issue. I've also tried brand new cables just to eliminate that as a possibility, with no difference. I was pretty pleased with the units initially but they just didn't last like they should, and as such I cannot recommend these to anyone for any reason. I also believe they're just out of warranty, so I doubt customer service will be able to do anything to rectify the problem.

by Monoprice Administrator

Thank you for your feedback on PID 605300. I am truly sorry to hear the sound quality has started to drop with the right speaker. If you would like, I can check if we are within warranty as we cover these monitor speakers with a one year warranty for replacement. I would just need your order number to proceed. I will also submit a complaint on the speakers so our product team can investigate these issues further. My apologies again for any inconvenience this may have caused and I hope this helps.

Gabby V.
Tech Support Associate
Was this review helpful to you?
Tax and shipping will be calculated at checkout