Are Harmony Speakers Any Good? My Experience


You can choose many different speakers when you want to upgrade your car’s factory audio system. If you’ve been looking for something worth investing in, no doubt you’ve heard about Harmony.

Harmony Audio offers several popular, widely available, and easy to install lines of speakers which fit many vehicles’ makes and models, but are Harmony Speakers any good?

As a whole, Harmony speakers are inexpensive, well-crafted, and will improve the car listening experience in most cars, when comparing to serial speakers. Harmony speakers are excellent and solid speakers for a reasonable price.

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Tip: Having great speakers installed in the car is the first thing we search for right after purchasing a new vehicle. The good thing is, to have excellent audio for the money, you do not have to apply for a loan. My favorite Harmony speakers are Harmony Audio HA-C65 with great 150W RMS. You can find them on Amazon for less than $70, and if this size does not fit in your car, the series includes a wide selection of speakers from 3.5″ up to 8″, including oval 4×6 and 6×9 models.

In this article, I will go through a die selection of speakers Harmony offers and provide some pointers on how you can save money by knowing what you want in your car’s audio system.

What Are Harmony Speakers?

Harmony Audio makes subwoofers, full-range speakers, subwoofer enclosures, and accessories for installing your new speakers. Their equipment is reasonably priced, and like many sellers of reasonably priced items, Harmony Audio imports its products from China.  

In the 1970s, many department store chains sold speakers and stereo components under their own name. These components were typically imported from Japan and often made with the same parts as highly-regarded Japanese name-brand equipment from companies like Pioneer, Hitachi, or Kenwood.  

Harmony speakers are the house brand for a Missouri corporation named HiFi Sound Connection. Today many people scorn the quality of Chinese imports. Still, China has a well-developed audio industry, and “Chi-Fi” – Chinese hi-fidelity audio equipment has become increasingly popular with audiophiles.  

The materials Harmony uses in speakers are time-tested:

  • Rubber surrounds on speakers will last longer than foam. +
  • Ultra-high-end speaker companies like Wilson Audio use silk dome tweeters. 
  • Carbon fiber diaphragms are excellent speaker drivers due to their stiffness and weight. 

These materials are inexpensive since Harmony speakers aim at the lower end of the car audio market, but this doesn’t mean these speakers sound bad. Today, most aftermarket car speakers can reproduce music reasonably well.

Luckily, acoustics, design, and manufacturing advances have taken much guesswork out of building speakers.

Harmony speakers are not top-of-the-line car audio speakers. Instead, they are solid aftermarket speakers that will probably be better than your car’s factory audio system. They are sold at a reasonable price and will do a decent job if properly installed.  

Full Range Harmony Speakers

Harmony Audio makes two lines of full-range speakers, and they come in most of the standard car stereo speaker sizes. But note that even though a replacement speaker has the exact dimensions as your old one, its mounting holes may be in different places.  

  • Before replacing any speaker in your car, make sure you know its dimensions and where the mounting holes are located. If there are issues, you can get a speaker mount that will allow you to place the new speaker. You can also drill new holes into the mounting area to attach your speaker.  
  • Be sure you know the vertical height of your old and new speakers. If you had to remove a panel to get to your speaker, a slightly bigger tweeter may be a mere fraction of an inch higher yet still make replacing the panel impossible. 

Carbon Series

Harmony Audio Carbon Series Speakers have durable carbon fiber cones and a 1″ (25.4 mm) silk dome tweeter. Many audiophiles, myself included, prefer the sound of a silk dome tweeter to metal or polyethylene because although silk can be less detailed, it sounds less harsh and ringing. When you’re listening inside a metal box, that can be important.  

Harmony Audio HA-C35 Car Stereo Carbon Series 110 Watt 3.5″ Speakers

  • Power Handling: Peak: 110 watts, RMS: 50 watts
  • Sensitivity: 90dB
  • Frequency Response: 90Hz – 21kHz
  • Single 4 Ohm

Harmony Audio HA-C4 Car Stereo Carbon Series 170 Watt 4″ Speakers

  • Power Handling: Peak: 170 watts, RMS: 70 watts
  • Sensitivity: 89dB
  • Frequency Response: 80Hz – 21kHz
  • Single 4 Ohm

Harmony Audio HA-C46 Car Stereo Carbon Series 4×6″ Replacement 150W Speakers

  • Power Handling: Peak: 150 watts, RMS: 70 watts
  • Sensitivity: 89dB
  • Frequency Response: 60Hz – 21kHz
  • Single 4 Ohm

Harmony Audio HA-C5 Car Stereo Carbon 5.25″ Replacement 250W Speakers & Grills

  • Power Handling: Peak: 250 watts, RMS: 100 watts
  • Sensitivity: 91dB
  • Frequency Response: 70Hz – 21kHz
  • Single 4 Ohm

Harmony Audio HA-C65 Car Stereo Carbon 6.5″ Replacement 350W Speakers & Grills

  • Power Handling: Peak: 90 watts, RMS: 30 watts
  • Sensitivity: 88dB
  • Frequency Response: 85Hz-20kHz
  • Single 4 Ohm

Harmony Audio HC-CMB65 Car Stereo Carbon Mid Bass Mid Range 6.5″ Speakers 4 Ohm

  • Power Handling: -Peak: 200 watts -RMS: 100 watts
  • Sensitivity: 89.5dB
  • Frequency Response: 120Hz – 14kHz
  • Single 4 Ohm

Harmony Audio HA-C68 Car Stereo Carbon Series 275 Watt 5×7″ 6×8″ Speakers

  • Power Handling: Peak: 275 watts, RMS: 125 watts
  • Sensitivity: 91dB
  • Frequency Response: 50Hz – 21kHz
  • Single 4 Ohm

Harmony Audio HA-C69 Car Stereo Carbon 6×9 Replacement 500W Speakers & Grills

  • Power Handling: -Peak: 500 watts -RMS: 200 watts
  • Sensitivity: 93dB
  • Frequency Response: 35Hz-21kHz
  • Single 4 Ohm

Harmony Audio HA-CMB8 Car Stereo Carbon Mid Bass Mid Range 8″ Speakers 4 Ohm

  • Power Handling: Peak: 280 watts, RMS: 140 watts
  • Sensitivity: 92.2dB
  • Frequency Response: 85Hz – 10kHz
  • Single 4 Ohm

Rhythm Series 

Harmony Audio Rhythm Series Full Range speakers have polypropylene driver cones and a ½” (12.7 mm) polyetherimide (PEI) tweeter. These are a small step below the Carbon series but are slightly less expensive and will sound better than most factory audio speakers. 

Harmony Audio HA-R35 Car Stereo Rhythm Series 3.5″ Replacement 90W Speakers

  • Power Handling: Peak: 90 watts, RMS: 30 watts
  • Sensitivity: 88dB
  • Frequency Response: 85Hz-20kHz
  • Single 4 Ohm 

Harmony Audio HA-R4 Car Stereo Rhythm Series 4″ Replacement 150W Speakers

  • Power Handling: Peak: 150 watts, RMS: 50 watts
  • Sensitivity: 88dB
  • Frequency Response: 60Hz-20kHz
  • Single 4 Ohm

Harmony Audio HA-R46 Car Stereo Rhythm Series 4×6 Replacement 120W Speakers

  • Power Handling: Peak: 120 watts, RMS: 40 watts
  • Sensitivity: 88dB
  • Frequency Response: 50Hz-20kHz
  • Single 4 Ohm

Harmony Audio HA-R5 Car Stereo Rhythm Series 5.25″ Replacement 225W Speakers

  • Power Handling: Peak: 225 watts, RMS: 75 watts
  • Sensitivity: 90dB
  • Frequency Response: 45Hz-20kHz
  • Single 4 Ohm

Harmony Audio HA-65 Car Stereo Rhythm Series 6.5″ Replacement 300W Speakers

  • Power Handling: Peak: 300 watts, RMS: 100 watts
  • Sensitivity: 90dB
  • Frequency Response: 40Hz-20kHz
  • Single 4 Ohm

Harmony Audio HA-R68 Car Stereo Rhythm Series 5×7 6×8 Replacement 225W Speakers

  • Power Handling: Peak: 225 watts, RMS: 75 watts
  • Sensitivity: 90dB
  • Frequency Response: 45Hz-20kHz
  • Single 4 Ohm

Harmony Audio HA-R69 Car Stereo Rhythm Series 6×9 Replacement 450W Speakers

  • Power Handling: -Peak: 450 watts -RMS: 150 watts
  • Sensitivity: 92dB
  • Frequency Response: 30Hz-20kHz
  • Single 4 Ohm

Harmony Subwoofers

Harmony also produces many different subwoofer speakers. These big, heavy bass speakers will need to be installed in an enclosure that fits your vehicle and is connected to your electrical system, though some of them may require a supplemental amplifier. 

Check to see if your car’s electrical system has enough spare current to power a subwoofer before installing these.

Alloy Series Subs 

Harmony’s Alloy subwoofers use an aluminum driver cone for accurate reproduction that gives you tight, quick bass. The Alloy series are 2-ohm subwoofers, so make sure your amplifier can handle a 2-ohm load before hooking these up. Presenting the amplifier with an overly low ohm load can cause a stereo shutdown and damage your head unit.

Harmony Audio HA-A102 Car Stereo Alloy Series 10″ 800W Dual 2 Ohm Subwoofer

  • Power Handling: Peak: 800 watts, RMS: 400 watts
  • Sensitivity: 84dB
  • Frequency Response: 25Hz-500Hz
  • Dual 2 Ohm

Harmony Audio HA-A122 Car Stereo Alloy 12″ 1000W Dual 2 Ohm Subwoofer

  • Power Handling: Peak: 1000 watts, RMS: 500 watts
  • Sensitivity: 87dB
  • Frequency Response: 25Hz-500Hz
  • Dual 2 Ohm

Harmony Audio HA-A152 Car Stereo Alloy 15″ 1500W Dual 2 Ohm Subwoofer

  • Power Handling: Peak: 1500 watts, RMS: 750 watts
  • Sensitivity: 89.4dB
  • Frequency Response: 22Hz-500Hz
  • Dual 2 Ohm

Carbon Series Subs 

Harmony’s Carbon subwoofers use carbon fiber cones for those who like their bass with an extra bump. If you want to test your system at a dB Drag Race, Harmony Carbon subwoofers will play loud as you want without costing you a lot of money. 

The Carbon Series subs offer dual terminals, making it easy to wire them to another subwoofer and run dual subs in your car. Unless you have a good-sized car interior, this is probably unnecessary. 

You will also need to check the ohm ratings before adding a second – or a third or fourth – subwoofer.  

Harmony Audio HA-C102 Car Stereo Competition Carbon 10″ 2000W Dual 2 Ohm Subwoofer

Harmony Audio HA-C102 Car Stereo Competition Carbon 10″ 2000W Dual 4 Ohm Subwoofer

  • Power Handling: -Peak: 2000 watts -RMS: 1000 watts
  • Sensitivity: 85.7dB
  • Frequency Response: 45Hz-300Hz
  • Dual 2 Ohm | Dual 4 Ohm

Harmony Audio HA-C122 Car Stereo Competition Carbon 12″ 2200W Dual 2 Ohm Subwoofer

Harmony Audio HA-C122 Car Stereo Competition Carbon 12″ 2200W Dual 4 Ohm Subwoofer

  • Power Handling: Peak: 2200 watts, RMS: 1100 watts
  • Sensitivity: 88.6dB
  • Frequency Response: 40Hz-300Hz
  • Dual 2 Ohm | Dual 4 Ohm

Harmony Audio HA-C152 Car Stereo Competition Carbon 15″ 2800W Dual 2 Ohm Subwoofer

Harmony Audio HA-C152 Car Stereo Competition Carbon 15″ 2800W Dual 4 Ohm Subwoofer

  • Power Handling: Peak: 2800 watts, RMS: 1400 watts
  • Sensitivity: 88.7dB
  • Frequency Response: 39Hz-300Hz
  • Dual 2 Ohm | Dual 4 Ohm

Flatline Series Subs 

Harmony’s Flatline subwoofers are available in 10,” and 12″ sizes (254 and 304.8 mm) and are designed for shallow-depth enclosures. Shallow subwoofer enclosures can be placed under a seat or on a rear deck and take up less space than a big subwoofer box.  

If you are driving a smaller vehicle or do not listen to a lot of bass-heavy music, a shallow-depth subwoofer beneath a seat will likely be more than enough for your needs. A small subwoofer won’t play as loud or go as deep, but that may be advantageous in small cars or during family trips.

Harmony Audio HA-F104 Car Stereo Flatline 10″ 700W Single 4 Ohm Subwoofer

  • Power Handling: Peak: 700 watts, RMS: 350 watts
  • Sensitivity: 87.1dB
  • Frequency Response: 25Hz-1.5Hz
  • Single 4 Ohm

Harmony Audio HA-F124 Car Stereo Flatline 12″ 800W Single 4 Ohm Subwoofer

  • Power Handling: Peak: 800 watts, RMS: 400 watts
  • Sensitivity: 87.3dB
  • Frequency Response: 25Hz-1.2Hz
  • Single 4 Ohm

Monolith Series Subs

Harmony’s Monoliths live up to their name, as they are the biggest speakers in the Harmony subwoofer line. At 1- or 2-ohm ratings, they are going to demand a beefy supplemental amplifier.

Running 3200-watt peaks into your subwoofer won’t just overtax your car’s electrical system. It will also make heavy demands on your alternator. Ensure your vehicle has the juice to power the Phat Bass before installing this or any other beast subwoofer into your system. 

Harmony Audio HA-ML151 Monolith 15″ Car Stereo Competition 3200W Dual 1 Ohm Subwoofer

Harmony Audio HA-ML152 Monolith 15″ Car Stereo Competition 3200W Dual 2 Ohm Subwoofer

  • Power Handling: Peak: 3200 watts, RMS: 1600 watts
  • Sensitivity: 86.9dB
  • Frequency Response: 34Hz-300Hz
  • Dual 1 Ohm or Dual 2 Ohm

Harmony Audio HA-ML181 Monolith 18″ Car Stereo Competition 3500W Dual 1 Ohm Subwoofer

Harmony Audio HA-ML182 Monolith 18″ Car Stereo Competition 3500W Dual 2 Ohm Subwoofer

  • Power Handling: Peak: 3500 watts RMS: 1750 watts
  • Sensitivity: 88.4dB
  • Frequency Response: 30Hz-300Hz
  • Dual 1 Ohm or Dual 2 Ohm

Rhythm Series Subs

Harmony’s Rhythm Series is their entry-level line. They are an inexpensive introduction to Harmony speakers and can be a good starter subwoofer if you are on a budget or building the first subwoofer enclosure box.  

These Harmony subwoofers would do a fine job of propping up the music’s low end for most people.

Many car audio fans think subwoofers exist to rattle windows, but a subwoofer’s real job is to add depth to the music and strengthen the lowest octave. The Rhythm Series will do that without making outrageous power demands on your car’s electrical system. 

Harmony Audio HA-R104 Car Stereo Rhythm 10″ 500W Single 4 Ohm Subwoofer

  • Power Handling: -Peak: 500 watts -RMS: 250 watts
  • Sensitivity: 86.1dB
  • Frequency Response: 30Hz-1.5kHz
  • Single 4 Ohm

Harmony Audio HA-R124 Car Stereo Rhythm 12″ 600W Single 4 Ohm Subwoofer

  • 12″ (304.8 mm) Rhythm Series Car Subwoofer
  • Power Handling: -Peak: 600 watts -RMS: 300 watts
  • Sensitivity: 88.2dB
  • Frequency Response: 27Hz-1.8kHz
  • Single 4 Ohm

Harmony Audio HA-R154 Car Stereo Rhythm 15″ 900W Single 4 Ohm Subwoofer

  • 15″ (381 mm) Rhythm Series Car Subwoofer
  • Power Handling: -Peak: 900 watts -RMS: 450 watts
  • Sensitivity: 90.4dB
  • Frequency Response: 25Hz-1.2kHz
  • Single 4 Ohm

I have mentioned “ohms” a lot in the descriptions above, and that information is critical when installing new speaker equipment.

Ohms are a measure of how much electrical resistance current encounters as it runs through your speaker. The lower the ohms, the more current can flow into your speakers, and the harder your amplifier has to work!  

This video from Paul McGowan of PS Audio will give you a clear explanation of ohms:  

Harmony Subwoofer Enclosures

If you don’t want to build your own subwoofer, the HiFi Sound Connection subsidiary American Sound Connection produces subwoofer enclosures. 

Harmony Audio also sells three pre-built enclosures with the subwoofers installed. 

Installing a subwoofer is not overly challenging. This short video from Parts Express will give you a visual guide to a simple subwoofer install: 

These Harmony subwoofers will fit in most trunks, provided your car amplifier can handle a 2-ohm load. If it cannot, you will need to add a supplemental subwoofer amplifier or have somebody install the subwoofer for you.  

Today’s smart cars rely on their electronics more than ever, and many of your car’s functions use the same electrical system that powers your stereo.

Many head units in modern automobiles also handle navigation, voice commands, and backup cameras. Repairing these systems can be a painful and costly experience. With that in mind, if you are unsure, always have a professional do the work.

Here are the subwoofers with enclosures sold by Harmony Audio. 

Harmony Audio HA-RS12 Car Stereo Rhythm Loaded 12″ Vented 600W Sub Box Enclosure.

  • Power Handling: Peak: 600 watts, RMS: 300 watts
  • Sensitivity: 88.2dB
  • Frequency Response: 25Hz – 300Hz
  • Enclosure Material: 5/8″ (15.87 mm) MDF Wood
  • Enclosure Port Tuning: 33Hz
  • Dimensions: 19-11/16″ (500.05 mm) Width x 15-3/4″ (400.05 mm) Height x 12-1/2″ (317.5 mm) Top Depth x 14-7/8″ (377.82 mm) Bottom Depth
  • 2 Ohm @ Terminal Cup

Harmony Audio HA-RS15 Car Stereo Rhythm Loaded 15″ Vented 900W Sub Box Enclosure.

  • Power Handling: Peak: 900 watts RMS: 450 watts
  • Sensitivity: 87.6dB
  • Frequency Response: 22Hz – 300Hz
  • Enclosure Material: 5/8″ (15.87 mm) MDF Wood
  • Enclosure Port Tuning: 23Hz
  • Dimensions: 25-5/8″ (650.87 mm) Width x 17″ (431.8 mm) Height x 19″ (482.6 mm) Top Depth x 21-1/2″ (546.1 mm) Bottom Depth
  • 2 Ohm @ Terminal Cup

Harmony Audio HA-RD12 Car Rhythm Loaded Dual 12″ Vented 1200W Sub Box Enclosure.

  • Power Handling: Peak: 1200 watts RMS: 600 watt
  • Sensitivity: 91.2dB
  • Frequency Response: 25Hz – 300Hz
  • Enclosure Material: 5/8″ (15.87 mm) MDF Wood
  • Enclosure Port Tuning: 30Hz
  • Dimensions: 33-1/2″ (850.9 mm) x 15-3/4″ (400.05 mm) x 15-5/8″ (396.87 mm) Top Depth x 19-1/2″ (495.3 mm) Bottom Depth
  • 2 Ohm @ Terminal Cup

Harmony Accessories

Harmony Audio offers many accessories that will help you install your new Harmony Speakers, including:

Amplifier Kits and Wiring

Harmony Audio’s amplifier kits like the Harmony Audio HA-AK0 Car Stereo come with RCA cables, power wire, speaker wire, and the terminals you will need to connect your new amp to your speakers. These kits can simplify the installation process considerably. 

If you are in the market for a new amplifier, the Harmony Audio HA-A1500.1 Car Stereo has received many positive reviews. The HA-A1500.1 will deliver all the power your new Harmony sub will ever need, is stable into 1 ohm, and uses Class D switching technology to produce a clean and efficient signal.

Harmony also sells RCA cables, speaker wire from 1/0/0 to 18 gauge, connectors, fuses, and other accessories. Harmony offers several complete kits like the Harmony Audio Speaker Replacement Bundle (R65 & HA-A400.4 Amp) that provide everything you need to improve your old car’s audio system in one package. 

Speaker Harnesses

Ideally, you should be able to connect your new speakers directly into your car’s electrical system through a wiring harness. This harness saves you the trouble of cutting and splicing wires and ensures you connect the proper cables to your amplifier’s appropriate power channel.

Finding the correct speaker harness can be a challenge as wiring setups vary between automobile manufacturers. They can differ based on your car’s year and model or between a manufacturer’s stock or premium audio setup. 

Harmony Audio offers speaker harnesses for many different automobile brands, mostly older models. Given the potential difficulties with finding the correct harness, you may do better by purchasing your speaker harness from local auto parts or car audio store.

Buying local will give you more flexibility should you discover that your new harness doesn’t match your car’s wiring. 

Where Can I Find Harmony Speakers? 

HiFi Sound Connection sells Harmony Speakers directly through its website. HiFi Sound Connection also offers Harmony speakers on Amazon through Amazon’s FBA (Fulfilled by Amazon) program, which is an effortless way to find the speakers. There they have a 12-month 88% positive rating on 1,467 transactions. 

HiFi Sound Connection also does a great deal of business on eBay. Their satisfaction rating on eBay is 99.3%, and they currently have over 25,000 items for sale, including many listings for Harmony speakers. Since 2001, HiFi Sound Connection has had over 260,000 deals on eBay.

While you can purchase harmony speakers through WalMart’s online portal, they are not available in-store. Harmony is a strictly online brand that HiFi Sound Connection ships through virtual storefronts. This system keeps Harmony prices down but can add additional complications should problems arise. 

Final Thoughts

To summarize, Harmony speakers are excellent speakers for the price and will meet the needs of many people looking for inexpensive upgrades to their car audio system.

Harmony speakers are distributed by people with a solid understanding of the audio industry. Their speakers are inexpensive but made using time-tested speaker technology, and their subwoofers and subwoofer enclosures are particular standouts.  

Sources

Martin

Welcome to ImproveCarAudio! I am Martin, and I love to write about everything related to car sound systems. I strive to provide the most accurate and helpful information about car audio through extensive research, as well as my experience with car audio installations.

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