Tag: monoblock

Save Yourself From Installation Hassles with the JBL GTO EZ Amplifier Series

Matching up the perfect amplifiers with your car audio system can be a difficult task. We’re always excited at Sonic Electronix to see a diverse line of amplifiers in a series, especially when they’re designed to fit a large variety of car audio systems. These amplifiers in question are the JBL GTO EZ Series of amplifiers. Offering different amplifiers for practically every configuration, the JBL GTO EZ Amplifiers are offered in five channel, four channel, three channel, and monoblock configurations. Adding to their diversity, there are two separate four channel amplifiers, and three monoblock amplifiers to choose from, depending on the amount of wattage you’re looking for.

The four-channel configurations of the JBL GTO EZ series amplifiers are the GTO-504EZ and the GTO-804EZ. Both amplifiers are designed with quality crossovers and adjustments for gain control and bass boost. The smaller GTO-504EZ offers 50W to 4 channels at 4 ohms, and 75W to 4 channels at 2 ohms. The GTO-804EZ boasts a higher rating of 80W to 4 channels at 4 ohms, and 100W to 4 channels at 2 ohms. You can also use both amplifiers in two channel configuration, eliminating the need for a 2 channel amplifier.

The monoblock amplifiers in this series are offered in three different configurations. From a minimum of 350W, all the way up to a whopping 1000W of RMS power, these amplifiers can take care of any subwoofer application. The GTO-501EZ is rated at 350W RMS at 4 ohms, and 500W RMS at 2 ohms. The next step up is the GTO-751EZ with a power rating of 500W RMS at 4 ohms, and 750W RMS at 2 ohms. Finally is the big daddy, the GTO-1001EZwith a rating of 650W of RMS power at 4 ohms, and 1000W of RMS power at 2 ohms. All three of the amplifiers also have easily accessible tuning to make sure your system is always sounding at its best.


The 5-Channel JBL GTO-5EZ is designed to power a full audio system, including dedicated output for a subwoofer

Finally offered in this lineup is the 5 channel GTO-5EZ as well as the unique 3 channel GTO-3EZ. Similar in configuration, both of these amplifiers offer front channels for speakers, and a dedicated high powered channel for a subwoofer. The 5 channel GTO-5EZ allows you to power four total door speakers, as well as the subwoofer. The 3-channel allows only two speakers and a subwoofer. Both of these configurations are designed to eliminate the need of a separate monoblock amplifier, saving space, time and installation cost, without sacrificing audio quality. The JBL GTO EZ Series of amplifiers is perfect for any amplifier requirement, no matter the specific configuration you require. Check them out today!


Multi-Channel & Mono-Channel Differences

If your car audio sound system is not meeting your expectations then maybe your specifications are to blame.  When examining mono and multi-channel amplifiers, there a few specifications that you should pay closer attention to than others.

Multi-Channel Amplifiers

Pioneer GMD9500F

Pioneer GMD9500F 4-Channel Amplifier

2, 3, 4, 5 or more channel amplifiers are usually Class A/B.  The class is determined by the configuration of the circuitry.  Class A/B circuitry leans towards being more inefficient but provides higher sound quality.  This makes them ideal for mid to high frequencies but are sometimes used for subwoofers as well.  They will also run at much cooler temperatures considering the lower wattage applications they are required to be operated in.  If you are considering purchasing a multi-channel amplifier, then the following specifications should be kept in mind to sway your decision:


  • Signal-to-Noise Ratio: This figure refers to the strength of the signal vs. the level of back ground noise.  A high value will indicate a lower background noise and as a result, a better signal.
  • THD (Total Harmonic Distortion): This is the measurement of the harmonic distortion that is present.  It can be explained as the change in the signal as it is being amplified and exactly how much it is changed.  A lower value is desirable and a THD value of less than .10% is inaudible.
  • Channel Separation:  Sometimes referred to as “cross talk” this value indicates the level of interference between channels.  This value is measured in decibels and the higher the value, the greater and more effective the channel separation will be.

Mono-Channel Amplifiers

Rockford Fosgate PBR300X1

Rockford Fosgate PBR300X1 Monoblock Amplifier

Mono-Channel Amplifiers usually are Class D.  These amplifiers are going to be able to obtain lower ohm loads and higher output which makes them ideal for subwoofers. They are more efficient then their class A/B counterparts. In recent years, monoblock amplifiers have become more efficient and with smaller chassis. Features such as signal-to-noise ratio and THD will often be negatively effected. However, these specifications are not as important as others in regards to mono-channel amps. When examining mono amplifiers there a few different specs you should pay a bit more attention to:


  • Damping Factor: Having a high damping factor means there is a high ratio between the nominal load impedance (typically 8W ) and the source impedance of the amplifier.  It is said that the higher this value is, the more cone control is present which results in a better system response and more accurate bass.
  •  Pre-Amp Outputs: Most Mono amps have pre-amp outputs to daisy chain multiple amplifiers together without splitting the pre-outs from your head-unit.
  • Subsonic Filter:Only on mono amplifiers, this filter allows you to block frequencies that are not able to be reproduced by your subwoofer.  This filter is usally variable between 15-50 Hz.

Using an amplifier in the wrong application is bad, mkay.


JL Audio JX Series Amplifiers

Kenwood eXcelon Subwoofers

There is something special about JL Audio products. From the subwoofers to the amplifiers, there is an undeniable aura that emanates from that JL logo. It’s something that represents quality, passion, high fidelity, and pride. Talk to anyone that has a JL Audio product in their car and you will always hear the same thing. Each one will give you a personal testimony of the JL quality and the audiophile sound it creates. JL Audio is proud of the components that they manufacture and are excited about the new JX Series of amplifiers.

The JL Audio JX Series of car amplifiers is a new line for 2011 and is designed with a moderate price tag. The main premise behind the JX amplifier is to provide a solid, high performing amplifier without all the fancy frills that make other amplifiers expensive. By keeping it simple and focusing on what really matters to an amplifier, JL Audio is able to create an amplifier series that is affordable to the average consumer, yet respected by the strictest of car audio fanatic. This is what the JX Series is all about and they do it well.

The line of JX Amplifiers includes a 2-channel, a 4-channel, and three monoblock amplifiers. The entire line is class A/B with the exception of the JL Audio JX1000/1D, which is the lone class D. The A/B circuitry helps JL keep the cost of the amplifiers down while keeping the quality up. The JX 1000/1D has a 1000-watt output at 2 ohm. This is a perfect rating for a single high output subwoofer, or a pair of moderately powered subs. One of the convenient features of the class D monoblock is that it is housed in a chassis the same size as the JX250/1. That is the beauty of class D technology. Four times the power in the same case! Start your system off right by checking out the new JL Audio JX Series amplifiers.


Types of Car Amplifiers

Audiovox CMOS2 Rear View Back-Up Camera

By Ricky C. – Product Specialist

When searching for a car audio amplifier, it may seem intimidating when trying to narrow down which type would be correct for your application.  Out of our selections, we categorize amplifiers by the amount of channels and occasionally by their circuitry class.  You can choose from Amplifiers that are Monoblock, 2-Channel, 3-Channel,  4-Channel, 5-Channel, and even 6-Channel.  Now it’s apparent that some of these amplifiers have more channels than others, but what does this mean?

A 2-Channel Amplifier, like the Kenwood KAC-7205, is primarily used for outputting audio towards two door speakers, or to two subwoofers.  However, you can even bridge the two channels together for higher output towards one channel, like a subwoofer that requires more power.

4-Channel amplifiers like the MTX Audio TC6004 are more popular to be used primarily for amplifying four door speakers.  4-Channel Amplifiers are one of the most popular amplifier choices, purely because most cars have 4 locations for door speakers.

A Monoblock amplifier is also an extremely popular amplifier to chose.  These are single channel amplifiers which usually have more dedicated power built in.  Most of the time, Monoblocks are used to drive a subwoofer, or multiple subwoofers wired together.

So far, what we’ve learned is that if you want to amplify both of your door speakers and your subwoofer you are going to need multiple amplifiers.  The most common combination is a 4-Channel and a Monoblock setup.  This may be common, but you want to save more space.  You want to have less components to manage.  Enter the 5-Channel amplifier.  A 5-Channel Amplifier is basically two amps built into one, a great example is the Kicker ZX700.5.  It’s a 4-channel amplifier which will output a moderate amount of wattage to four door speakers.  But then, it has a little surprise found in its fifth channel.  The fifth channel has dedicated power to output made for higher powered applications, like a subwoofer.  One thing with 5-Channel amplifiers is that they have been designed to do the work of two amplifiers, so they may not have as much overall dedicated power as the previously mentioned 4-Channel and Monoblock combination.  A 3-Channel amplifier, like the Kicker ZX550.3 operates very similar to a 5-Channel, but it will be basically a 2-Channel amplifier and a Monoblock combined.

Finally, the 6-Channel Amplifier. This type of beast wasn’t designed like a 5-Channel with the large fifth channel.  The 6-Channel amplifier usually follows the 4-Channel amplifiers design, but is made for a few more speakers.  These are perfect for adding an extra few custom speakers, or perfecting that audiophile setup.   JL Audio’s XD600/6 is a great example of a hi-fi audio amplifier that pushes dedicated power to 6 separate channels!


Eclipse XA1200 Mono Amplifier


By Gideon V. – Sonic Electronix Editor

When it comes to amps, you don’t want to skimp on power. Did you know that slightly over-powering your subwoofers is actually better than slightly under-powering them? With the Eclipse XA1200 mono amplifier, power will not be a problem. If you wire this amp at 4 ohms, it will produce an impressive 500 watts of RMS power. Better yet, at 2 ohms it can produce 600 watts of RMS power. The advanced MOSFET power supply ensures a steady flow of wattage will be fed into the subwoofer from the amplifier. This amp is also designed with the special ICEpower technology, which means that for its power, this amp requires less energy and space than the average amp.

The Eclipse XA-1200 includes a wired remote bass level control, a key user-friendly feature. The bass remote allows you to adjust the bass output without having to access the amp itself. You can boost the bass from 0-8 decibels. In terms of heat dissipation, its heavy duty aluminum alloy heatsink allows you to push the XA1200 at the top output levels without overheating. While in action the amp’s blue led indicator lights up to signal that the power is flowing. This complements the black and silver finish.

With two 40A fuses and a built-in variable low-pass filter (40-500 Hz), this amp is well-equipped and will provide superior sound quality to your vehicle. Besides this amp, all you need is an amp wiring kit to install the missing piece to your great system. We recommend using a 4-gauge power and ground installation kit when it comes time to install your amp. And once you hook this amp up, you will be able to hear and feel the difference from the way your subs pound!

Watch the Eclipse XA1200 Video Review