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West Carrollton City, OH 45449
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Why Does My Sub Amp Have Two Sets of Terminals?

Sub Amp

If you’re shopping for a subwoofer amplifier for your car stereo system, you may have noticed that some have two sets of speaker terminals. In most cases, it’s reasonable to assume that an amp with two positive and two negative speaker connections would be a stereo amp. As you’ll soon see, this isn’t always the case.

Sub Amp Design Process

When an engineer is designing a car audio amplifier, there are lots of criteria to keep in mind. First and foremost is the amount of power the amp will need to produce. Power production has the most significant impact on the cost of an amp, since it determines the size of the heat sink and the power supply, and the number of power supply and output switching devices.

Sub Amp
The Helix P-One is a monoblock amplifier designed to produce 1,500 watts into a 1-ohm-load.

Next, the features to be included in the amp have to be taken into account. All subwoofer amps have a sensitivity control and most have an adjustable low-pass crossover. Some will add an infrasonic filter, a remote level control knob and perhaps a bass boost circuit. The cost of the parts (switches, potentiometers, op-amps, capacitors and resistors) adds to the cost of the amplifier, but also its flexibility and value.

Sub Amp
The ARC Audio X2 2500.1 is a monoblock amplifier that will deliver 2,500-watts into a 1-ohm load.

Use What You Have in Stock

It should come as no surprise that a mono sub amp needs only a single positive and negative speaker terminal. If the company designing the sub amp already has a four-position terminal block in its inventory, then they can use that to eliminate the cost of adding another component they need to stock.

Sub Amp
The impressively compact Sony XM-GS100 monoblock amp will produce up to 600 watts of power into a 2-ohm load.

Inside the amp, the two positive terminals are connected together, as are the two negative terminals. The extra connections are added for convenience to make wiring multiple subwoofers easier. If you have a vehicle like a Jeep Wrangler that is commonly upgraded with two separate subwoofer enclosures, being able to connect two sets of wires is easier. Is there a performance benefit? Not really. If you need to run two sets of speaker wires, the extra connections make that easier, but that’s about it.

Sub Amp
The Audison Voce AV uno mono amplifier is rated to produce 1,700 watts into a 1-ohm load. The symmetrical speaker connections match the output design of the two-channel AV due amplifier.

Upgrade Your Car Stereo with a Subwoofer

If you want to dramatically improve the performance of your car stereo system, drop by your local specialty mobile enhancement retailer today and ask about adding a subwoofer system. They’ll be happy to demonstrate different sub, amp and enclosure options for your vehicle.

This article is written and produced by the team at www.BestCarAudio.com. Reproduction or use of any kind is prohibited without the express written permission of 1sixty8 media.

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Testimonials

Staff was very nice & professional

Staff was very nice & professional!! Very satisfied with car window tint that I had done. If you have been to the rest of their competition & not satisfied I recommend you go see the best @ Car Stereo Max!!!

Really nice guys and very professional

Paul and Nick are really nice guys and very professional. Their customer service was great and they took care of me and my car. I felt at ease leaving them my car for over 4 hours too. I originally had an appointment for Saturday but they had a cancellation on Thursday and asked if I wanted the slot. Knowing Saturday's weather wasn't looking good for the drive, I jumped on it and brought my car down right away and they installed a new head unit and backup camera on my 2006 Z06. I'm very pleased with the work they did and would definitely recommend this shop to anyone.

Awesome group

Awesome group of people very knowledgeable, helped me get the right equipment and installed it for me. Best prices around.

Exceeded my expectation

Went there to get quiet a few things done and they have exceeded my expectation of work. Everything turned out great and could not ask for better customer service. Will be returning for more work. Thanks guys!  

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Dayton Location

3349 Needmore Road
Dayton, OH 45414
Phone: (937) 237-1544

West Carrollton Location

3580 Miamisburg-Centerville Rd
West Carrollton, OH 45449
Phone: (937) 522-0864

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