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Polk Audio > 
Item#: N82E16882290276

Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

  • Total Frequency Response: 47Hz-25kHz
  • Upper -3dB Limit: 24 kHz
  • Lower -3dB Limit: 57 Hz
  • 8 Ohms 20-125 watts per channel
  • 89 dB
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This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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BUY WITH CONFIDENCE
This product qualifies for the Iron Egg guarantee. We'll match any qualifying competitor's price.
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Polk's Monitor Series has been the gold standard of speakers since the 1970's. The current generation Monitor 45B features high efficiency design in a dual-driver bookshelf size giving you more options for high performance audio. Polk made the enclosures out of MDF to not resonate. They've also included ¾" thick baffles to help produce clear lifelike sound.

The 5.25" cones are made from bi-laminate composite for an optimal balance of weight and rigidity. The small driver delivers a wide open sound and exceptional responsiveness. The 1" tweeter is a fabric/polymer composite driver that responds swiftly to the high efficiency neodymium magnet. The crossovers between the drivers use Mylar bypass capacitors to let all of the details in the higher frequencies shine through.

No matter how good they sound, they have to look good too. Their contemporary look complements today's flat panel televisions and modern decorating styles.

  • newegg Exceptional Sound Quality The Polk Audio Monitor 45B boasts two 5.25" Bi-Laminate composite dynamic balance drivers and a 1" dynamic balance silk/polymer composite dome tweeter to deliver crisp highs and accurate lows for an immersive listening experience.
  • newegg Dual 5-way binding post connectors Dual 5-way binding post connectors allows for more secure hook-up options, as well as bi-wiring and bi-amping flexibility.
  • newegg Critically tuned flared port Critically tuned flared port minimizes port noise ("chuffing") for good low frequency extension with low distortion, resulting in natural, full-bodied sound with rich bass.



Polk's Monitor Series has been the gold standard of speakers since the 1970's. The current generation Monitor 45B features high efficiency design in a dual-driver bookshelf size giving you more options for high performance audio. Polk made the enclosures out of MDF to not resonate. They've also included ¾" thick baffles to help produce clear lifelike sound.

The 5.25" cones are made from bi-laminate composite for an optimal balance of weight and rigidity. The small driver delivers a wide open sound and exceptional responsiveness. The 1" tweeter is a fabric/polymer composite driver that responds swiftly to the high efficiency neodymium magnet. The crossovers between the drivers use Mylar bypass capacitors to let all of the details in the higher frequencies shine through.

No matter how good they sound, they have to look good too. Their contemporary look complements today's flat panel televisions and modern decorating styles.

  • newegg Exceptional Sound Quality The Polk Audio Monitor 45B boasts two 5.25" Bi-Laminate composite dynamic balance drivers and a 1" dynamic balance silk/polymer composite dome tweeter to deliver crisp highs and accurate lows for an immersive listening experience.
  • newegg Dual 5-way binding post connectors Dual 5-way binding post connectors allows for more secure hook-up options, as well as bi-wiring and bi-amping flexibility.
  • newegg Critically tuned flared port Critically tuned flared port minimizes port noise ("chuffing") for good low frequency extension with low distortion, resulting in natural, full-bodied sound with rich bass.


Learn more about the Polk Audio Monitor 45B

Model

Brand
Polk Audio
Series
Monitor Series
Model
Monitor 45B

Spec

Type
Bookshelf Speakers
Sold As
Pair
Driver Units
Tweeter Diameter: 1" (2.54cm), Dynamic Balance silk/polymer composite dome
Midrange Diameter: 5 1/4" (13.34cm), Dynamic Balance bi-laminate composite cone driver
Power Rating
20-125 watts per channel
Frequency Response
Total Frequency Response: 47Hz-25kHz
Upper -3dB Limit: 24 kHz
Lower -3dB Limit: 57 Hz
Nominal Impedance
8 Ohms
Sensitivity
89 dB
Connectors
Yes

Features

Color
Cherry

Spec

Dimensions & Weight
Dimensions: 7" (17.78cm)x 15 3/4" (40.01cm)x 12" (30.48cm) (WxHxD)
Weight (each): 16 lbs.

Features

Features
High efficiency design in a dual-driver bookshelf size gives you more options for high performance audio. Let the 45B reveal the classic Polk sound (open, spacious and clear) in mid- to large-sized rooms (driven by even a modestly-powered amp or receiver). The 45B mounts on the wall, or on stands (available separately).

Quick Info

Warranty

  • Limited Warranty period (parts): 5 years
  • Limited Warranty period (labor): 5 years


Customer Reviews of the Polk Audio Monitor 45B

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Showing 13 of 13 reviews - Clear Filters

  • James G.
  • 3/19/2014 12:09:32 PM
  • Tech Level: High
  • Ownership: more than 1 year
  • Verified Owner

5 out of 5 eggsGreat Buy! Totally Satisfied

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: Great Price, Great sound, Great look.
Not the best audio out there but certainly a fantastic option for a home stereo.

Cons: Maybe a bit big (check dimensions) but that's part of why they sound so good.

Other Thoughts: Not much to add that hasn't already been covered. I would recommend for great sound at home without the cost of your first born. I did also get a Polk Sub (10") to go with these. They would be fine by themselves but I'm a bit of an audiophile.

Did you find this review helpful? Yes No

  • jack w.
  • 2/25/2014 6:00:09 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsWOW JUST WOW

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: If the 75T WHICH IS STILL COMING is anything as awesome as these badboys, I'm gonna be 1 happy guy. I also recieved the 25c center today. I'm driving them with an old Pioneer VSX 29TX. My Acoustic Research TSW610"s need re-foaming and it's beyond my expertice. Have waited for something to replace them that even comes close. Let me say I am extremely impressed with the center and bookshelfs I will use as surrounds, these little speakers with my PSW505 totally rock the house just on direct setting. I played around with DSP and Theater settings and now watching the voice in THX mode....Just wow..Compaired to my 1,000.00 plus 5 channel mini's. Won't mention Brand, but just these little guys blow it away..Happy shopping, will review when towers arrive from Cali..Can't imagine being dissapointed

Cons: none yet

1 out of 1 people found this review helpful. Did you? Yes No

  • Denis S.
  • 2/24/2014 2:42:18 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year

5 out of 5 eggsGreat speakers for the price

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: This speakers sound quality is very good, connected to a N A D receiver the sound is clear and well balanced, you will get surprised on how much bass this speakers can play.

Cons: none

Did you find this review helpful? Yes No

  • Stan R.
  • 12/1/2013 11:14:57 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

4 out of 5 eggsgreat sound

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: great sound for my sons dorm room. Would be good for more of a room but that is where they are now.

Cons: none

1 out of 4 people found this review helpful. Did you? Yes No

  • Erik E.
  • 11/28/2013 12:43:28 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

5 out of 5 eggsLove these

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: Great bookshelf speakers, on sale

Cons: none

0 out of 1 people found this review helpful. Did you? Yes No

  • Brian M.
  • 11/17/2013 6:04:12 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsPretty Happy

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: Well made, removable grill, decent sound, nice veneer finish

Cons: Very Large for a wall mount

Other Thoughts: They never claimed these could be wall mounted (but they can be). They are fairly large and heavy though. They truly are meant to sit on a shelf.

1 out of 1 people found this review helpful. Did you? Yes No

  • Andrew G.
  • 11/6/2013 5:59:23 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsExcellent value

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: The Polk Audio New Monitor 45B bookshelf speakers are an excellent value. These put out a nice, clean sound, and matches very well with the 65T floor-standing speakers in an attractive cherry veneer finish.

Cons: None so far.

Other Thoughts: I'm currently using these speakers for front wide channels, but I am also considering using them as front height channels, as I think that may help fill the room and provide greater immersion.

2 out of 2 people found this review helpful. Did you? Yes No

  • John S.
  • 10/11/2013 11:34:59 AM
  • Tech Level: Somewhat High
  • Ownership: less than 1 day

5 out of 5 eggsPolk Audio Monitor 45B Two-Way Bookshelf Loudspeakers

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: Awesome price, well made, very fast shipping as usual and the sound quality is great for the size.

Cons: It would have been nice to have the double set of connection terminals like an older model set of mine have, for bi-wiring etc., but I'm not really complaining because the price was so good.

The grill is kind of odd because it sticks up past the speaker cabinet on the top, kind of making it look as if it doesn't fit right, but again the price was so good that it's not that big of a problem.

Other Thoughts: Those who complain about there not being enough bass are likely using a low end receiver or their source material is lacking because I had to turn my sub-woofer volume down some.

2 out of 2 people found this review helpful. Did you? Yes No

  • Ian P.
  • 9/23/2013 6:08:43 PM
  • Tech Level: Average
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsSublime

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: This is my first dive into audiophile-grade hardware (albeit the low end of the spectrum), and I am totally stoked. The sound quality is out of this world coming from really basic speakers (Logitech 2.1 setups, <$100 headphones, etc).

I'm using these in my college dorm, so I hardly even touch the capabilities of these speakers. Even at low levels, they sound superb.

Bass (in my lowly opinion) is adequate for music, especially when EQ-adjusted on a receiver.

Ripping FLACs from CDs has finally paid off.

Very solid speakers as far as build quality is concern. They look great (in my opinion) with or without the speaker grill. The drivers look pretty awesome when exposed, but I worry about them getting damaged.

Cons: These are big speakers. I recommend planning out placement, etc. based on the provided speaker size dimensions before buying. Size is clearly stated, so obviously I can't dock an egg for it.

Other Thoughts: I'm currently driving this speakers with an Onkyo TX-8255 Stereo Receiver (which I HIGHLY recommend), 16-gauge Mediabridge speaker wire (great company), and some generic banana plugs.

I snagged these when they were half-off. I recommend waiting until they go on sale (happens once a month or so) if you're not in a rush. They're a total steal for $150.

I haven't even been able to properly burn these speakers in, so they'll only sound better with time.

2 out of 2 people found this review helpful. Did you? Yes No

  • James A.
  • 9/16/2013 10:23:03 AM
  • Tech Level: Average
  • Ownership: 1 day to 1 week
  • Verified Owner

5 out of 5 eggsGreat Sound, Better Deal

This review is from: Polk Audio Monitor Series Monitor 45B Two-Way Bookshelf Loudspeaker (Cherry) Pair

Pros: Great range , solid and heavy quality. Nice finished look (I don't think it looks cheap as others have mentioned). Perfect size for front surround channels in a small-medium sized room.

Cons: No cons but I can see where others say they are too big. I wouldn't call these "bookshelf" speakers but I think they are a perfect size.

The only "con" would be that they ship directly in the Polk box. It makes it a fairly obvious target for theft if you live in a busy area.

Other Thoughts: I bought these to replace some older floor-standing speakers as front channels in my surround setup. For the size of the room, I wanted something smaller without sacrificing the theater-style sound. These are perfect. In fact, the sound is much more crisp and clear then the old speakers with a larger footprint. Well-balanced mid-high ranges but you will want a sub for your low-end. All-in-all, I'm extremely happy with Polk (and Newegg, as always) on these.

1 out of 1 people found this review helpful. Did you? Yes No

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Item#: N82E16882290276
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