Being an employee at Sonic Electronix, it’s nearly impossible to avoid buying car audio equipment. I for one could not resist the temptation. I indulged in the Kicker ZX750.1 amplifier paired with the Earthquake Subzero SZ-10 subwoofer. Im here to give you my honest opinion and review of my choice and maybe help you along the way in making a choice of your own!
First off lets start with the amplifier. The ZX750.1 is the perfect match for my subzero. This amplifier pumps out 750W RMS at a 2 ohm load, perfect for the Dual 4 ohm sub which wires to a final impedance of 2 ohms. However, the birth sheet states over 900 watts RMS which my sub can scarf down with ease. The amplifier’s chassis is compact enough to allow me to mount it on the sidewall of my small trunk, space is at a premium. Tuning the amplifier was a breeze because it includes a low-pass crossover frequency selector, bass boost and gain adjustment. While some people might find the simplistic design of a monoblock amplifier to be a bad thing, it made it easy for me to find the desired sound I was looking for right away. I turned the gain 1/4 a turn to match the 2 volt output of my headunit so the signal won’t clip, meaning my bass will sound crystal clear with no pops, thumps or crackles even at high volume. The amplifier dissipates heat very well, even after extended periods of brutal bass notes it was only warm to the touch. I can play sweet bassy songs all day long without this amplifier breaking a sweat which is good news when it comes to my addiction to bass. I tried to come up with shortcomings for this amplifier but so far I’ve had no negative experiences. It’s priced reasonably for the build quality and power output and has been quite reliable for the duration of ownership. If anyone tries to tell you that Kicker amplifiers are garbage, don’t listen to them….just don’t.
Earthquake Subzero SZ-10
Now the fun part! If you are unfamiliar with Earthquake Sound, you are probably not alone. They are a brand that should be as well known as Kicker or JL because of their high quality system components. The Subzero is one of their top of the line subwoofers and I decided to go with one of their 10″ versions. You might be thinking that just one 10″ subwoofer will not produce the pounding bass that two average woofers could produce but you would be wrong my friend. I have this in a 1.0 cubic foot sealed box which is not exactly ideal for maximizing bass output in comparison to a vented enclosure, but that is exactly what it does. This sub is rated at 750W RMS and like I stated previously, im pushing over 900 watts to it so it pounds hard and loud. Connecting this subwoofer to the amplifier was easy due to the PSP terminals on the Subzero which use fuses to give you different ohm loads. This eliminates the use of pesky jumper cables between the terminals. The only complaint that I have is that my car is falling apart from all of the bass rattling the screws right from their panels. I need to sound dampen my car to reduce vibrations and rattling before it’s too late. If you’re wondering, it does play every genre of music exceptionally well, from the low bass notes of E-40 to the soothing bass lines of Sublime.
Oh, did I mention that it has some serious excursion? If you don’t believe me, check out this video of my Subzero and amplifier in action. Enjoy : )
Any comments or questions about my system? Comment below!