Polk Audio DB651 Review

Polk Audio DB651 Marine Certified db Series Car Speaker

Today we will discuss Polk Audio DB651 Marine Certified db Series Car Speaker. Polk is an admired speaker brand all over America. With a great collection of tremendous speakers, the title is definitely deserving.

So, when a Polk speaker is being mentioned, you should prepare yourself to witness something really fabulous. Cause, it ought to be fabulous!

Polk Audio DB6501 6.5-Inch Component System is a 2-way speaker with 60 watts RMS and 180 watts peak power handling. This speaker includes a 3/4 inch silk/polymer composite dome tweeter and a 6-1/2 inch polymer/mica composite mineral filled cone woofer with rubber surround. The tweeter can be swiveled. It’s a co-axial speaker.

Dynamic balance driver technology has been used. Components are klippel optimized.Polk Audio DB6501 6.5-Inch 2-Way Component System  follows a 2-way crossover network for sound delivery. For high quality sound, Kapton voice coil and Neodymium tweeter magnet are used. Polk has applied laser imaging to deliver spontaneous audio.

The speaker’s mounting hardware is constructed from stainless steel. It uses adapter rings to fit into two standard (European) sized openings: 6-1/2 inch and 6-3/4 inch. ABS grilles are included in the front.

The amazing looking, tremendous sounding, durable Polk Audio DB6501 6.5-Inch 2-Way Component System is marine certified. 1 year warranty is included.

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Polk Audio DB651 Specs discussed Below:


Polk Audio DB6501 6.5-Inch 2-Way Component System can handle up to 60 watts of continuous power and peak power handling limit is 180 watts maximum. The impedance is 4 ohms. It works with 92 dB sensitivity.

Co-axial Speaker:

One of the best reasons for picking this speaker. Co-axial speakers are always the favorite choice of customers. They are easy to use in any car regardless of the model.

Polk Audio DB6501 6.5-Inch 2-Way Component System follows the traditional co-axial style. The tweeter is placed before the woofer.

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However, the mounting doesn’t affect the woofer’s sound quality, its design is capable of emitting clear sound from the default placement. Moreover, this co-axial structure is beneficial for small/shallow location fitting.

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Two-way System:

You already know this. Polk Audio DB6501 6.5-Inch 2-Way Component System includes a tweeter and a woofer for frequency separation. No mid-range driver is included, tweeter volunteers for similar frequencies.


Polk Audio DB6501 6.5-Inch 2-Way Component System features 3/4 inch silk/polymer composite dome tweeter.

Best construction and use of good material is compulsory for quality performance. Polk has always been careful about this and it’s clearly reflected here.

The dome is built with liquid-cooled silk/polymer. These materials tend to protect the frequency’s original vibe and tenderness, thus provide with clear highs. The sound is pretty detailed. Neodymium magnets are included inside for strong imaging.

Sound direction is important for hearing convenience, that’s why this speaker features swiveling tweeter. You can aim the tweeter in a convenient direction to get the best out of it.

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Practically, the main reason to use a loudspeaker is to get some catchy low beats. So the state of the driver that delivers low ends matters as well.

The woofer included in this speaker is a 6-1/2 inch cone woofer. The cone is mineral filled with polymer/mica composite structure. The construction and mineral makes the woofer cone lightweight and compact at the same time, which enables heavy bass production while reducing frequency distortion.

Kapton voice coil is included inside for more powerful low frequencies. Works incredibly with high wattage. While the coil takes care of the powerful performance, the woofer is surrounded with butyl rubber to smoothen the sound.

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Dynamic Balance Technology:

Polk audio marine speaker is engineered with Dynamic Balance technology. This patented technology of Polk works to deliver smooth and detailed sound with less distortion.

Dynamic Balance technology accomplishes this work by lowering the resonance rate. It uses laser imaging for the purpose, laser imaging combines the materials in a convenient pattern to allow minimum resonance.

Crossover Network:

Frequency purity is very important for clear, detailed and pure sound. This Polk Audio car speaker comes with a built-in 2-way crossover network for exact this reason.

The crossover network blocks random frequencies from going to opposite direction and leads only the accurate frequencies to the proper driver.


Sturdiness is a must for longevity. Polk Audio DB6501 6.5-Inch 2-Way Component System is constructed with compact materials. It includes a durable ABS grille on the front.

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Mounting Hardware:

It features adapter rings for standard mounting. The ring structure is the best fit for popular European designs, best for 6-1/2 inch and 6-3/4 inch openings.

Marine Certified Speaker:

How awesome it will be if your speaker is water-resistant? This speaker is marine certified, so the splash of water doesn’t do any harm to the system. You can easily use it in boats and ATVs, along with cars.


The speaker comes with a 1-year guarantee. I don’t think you have to avail it as Polk’s products have a reputation of being long-lasting and serve well for years.

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  • Water-resistant attire.
  • Delivers quality bass and treble.
  • The crossover network maintains the frequency’s originality.
  • Distortion and resonance are eliminated.


  • Mid-range sound quality is low.
  • The mounting bracket is not suitable for a few American designs.
  • Some customers found the setup complex.

Frequently Asked Questions (FAQ)

1. do they come in pair?

Yes, these speakers come in a pair.

2. what is the actual color of the cone?

It’s silvery gold.

3. do we need to use an amp with the speaker?

It’s not compulsory, but you can use one if you like.

4. is it 2 way or 3 way speakers?

It’s 2 Way

Wrapping It Up

So, tell me,

What do you think?

This speaker is equipped with quality drivers for premium high and low-frequency delivery, includes a crossover network, follows durable construction and easily mountable – in fact, it includes EVERYTHING that should be in an ideal speaker.

Also, it doesn’t ‘stop working with a little touch of water like others car speakers as it’s water-proof.

I think, with Polk Audio DB6501 6.5-Inch 2-Way Component System , Polk has once again proved its brilliancy.

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