0
That will depend on the subs power rating, and how they're wired. Since I don't know which model subs you have, I can only give you an example and not a definite answer.
Let's assume that your subs are rated at 100W RMS @ 4 ohms.
If you hook them up in series, you will then need an amp capable of delivering a minimum of 200W RMS @ 8 ohms. (more would be better, say 250W @ 8 ohms)
If you run those same two subs in parallel, you will then need an amp capable of delivering a minimum of 200W RMS @ 2 ohms. (again 250W would be better)
Hope this helps!
The wattage of the speakers MUST be more than the amp. Otherwise you can potentially blow the speakers.
The impedance of the speaker MUST match or be more than the amp Otherwise you can potentially blow the speakers.
Ideally you want more than enough power in amp and speakers than your highest listening volume. An over driven amp introduces distortion.
If speakers are wired in series then there is more resistance you half the wattage but double the impedance. So 2x100w 4ohm speakers in series are 100w at 8ohm.
If the speakers are wired in parallel then there is less resistance you get double wattage but half the impedance. 2x100w 4ohm speakers are now 200w into 2ohm
Most car amps are 4ohm (home hifi usually 4 or 8 ohm) therefore to add 2 10" subs you would need 2x 8ohm and wire them in parallel to half the impedance to 4ohm. Many car sub woofers are dual 4ohm voice coil. This means you can wire a single speaker unit as 2ohm, 4ohm or 8ohm and this then means you can run sets in parallel or series as you see fit.
heathcnc here again:
I made the assumption of car audio and didn't consider the home audio/theatre possibility. I apologize.
I completely agree with these two statements as applied to a home audio/theatre situation.
"The wattage of the speakers MUST be more than the amp. Otherwise you can potentially blow the speakers."
"The impedance of the speaker MUST match or be more than the amp Otherwise you can potentially blow the speakers."
However in car audio, the amplifiers are of a different class and are far more flexible and user-configurable. This is why I always recommend running an amp that is more powerful than the speaker it is driving. That way you can set that amps gain lower than full power(an option unavailable to the user on home equipment). When configured correctly like this there is very little chance of harming your speakers.
Wiki User
∙ 12y ago
Add your answer:
Earn +20 pts
If you have a sub woofer do you need an amplifier?
There are two types of subwoofers. 1. Active subwoofers 2. Passive subwoofers An active subwoofer will have a built-in amplifier. A passive subwoofer doesn't have a built-in amplifier which will require the use of an amplifier, the use of a power source.
If you have two 1400 watt subwoofers that have a 700 watt RMS should you get an amplifier that has the watts of both of the subwoofers together 2800 or should you get an amplifier with only 1400 watts?
get the 2800
What wattage amplifier is ideal to power two twelve inch subwoofers?
depends on where your putting them and what kind they are
What amplifier do you need to power two Memphis PR15D4V2 subwoofers?
Memphis Street Refrence 1.500 best amp for the subs
What amp size should you use for 2 12s?
Amp size will depend on the power handling capability of the 12-inch subwoofers. Generally, for two 12-inch subwoofers, a mono block amplifier with around 1000-1500 watts RMS power output can provide sufficient power for good performance. Be sure to match the impedance of the subwoofers with the amplifier for optimal performance.
If you have two 300 watt subwoofers for your vehicle then what size amp do you need?
To power two 300 watt subwoofers, you will need an amplifier with a maximum power output of at least 600 watts. It is recommended to choose an amplifier with a slightly higher wattage rating to ensure that the subwoofers receive enough power for optimal performance.
Will 300 watt kicker amp push two tens?
It depends on the specific power-handling capabilities of the subwoofers and their impedance. If the subwoofers have a total power handling capacity that is lower than 300 watts and the amplifier can provide enough power at the required impedance, then it should be able to adequately power the two tens. However, if the subwoofers have a higher power handling capacity or the amplifier cannot provide enough power, it may not be sufficient.
What is a monoblock phone?
A monoblock is a type of amplifier used in car audio systems. What the monoblock type of amplifier does is to split the two channels of audio into two separate mono systems, giving a little more kick to the bass coming out of subwoofers.
I have two 1200 watt subwoofers for my car Do you need an amp and if so what size Will they affect your battery much?
First you will absolutely need an amp to power any subwoofers. Nowadays subwoofers come along with amp..& normally one 1200watt subwoofer decrease your car battery lifetime to 2-4 month
Would running two 4 Ohm dual voice coil subwoofers add to 16 Ohms?
There are many different ways that you could wire two dual voice coil subwoofers. Depending on how you connect the voice coils, you could have 1ohm (all coils in parallel), 4ohms (parallel-series combination). Technically you could wire them for 16ohms (all in series), but this isn't done in practice because an amplifier won't provide much power to a 16ohm load. You should wire the subwoofers to make an impedance (which is the 'ohms') which will match your amplifier. Not all amplifiers can handle 1ohm, so you may need to wire the subwoofers for 4ohms. Be sure to do some research on this before wiring anything up or you could damage your amplifier. For some helpful wiring diagrams, check out the Fosgate Wiring Wizard: http://www.rockfordfosgate.com/rftech/woofer_wizard.asp?submitted=true&woofer_qty=2&woofer_imp=4
How to Install Audio Subwoofers?
Many vehicles unfortunately do not come with audio subwoofers. However, you may wish to have them in your ride so you can experience the kind of booming sound from your car�s audio system you want.Installing subwoofers can also be quite complicated and technical. You can make this job a lot easier by purchasing your subwoofers in an already assembled enclosure box. To install these kinds of subwoofers inside an enclosure box, simply follow the instructions below.First, you will need to modify the hook-ups for your car�s audio system�s four channel amplifier. What you will want to do is to modify the amplifier so the speakers already installed in the front and the rear of the vehicle are implementing the amplifier�s two front channels. To adjust these speakers, you will be able to use the high pass crossover of the amplifier�s front channels.The next step is bridging the amplifier�s rear channels to mono sound. This is done to make sure that the amplifier is supplying double the power. This may seem complicated. However, your amplifier likely came with instructions. Use them to help you make this adjustment.After you have finished that step, you need to wire both subwoofers. You should use 12 gauge wire for speakers to connect the amplifier to the subwoofers. However, first, you should again check your amplifier�s instructions. You may be told to connect them in a different way. The crossover of the amplifier�s rear channel should be low-pass.Next, you will need to perform some tests. Test to see what crossover point works best with the subwoofers. Once you have found it, use this crossover point.Once you have done all of this, you will need to make sure your subwoofers are properly secured in your trunk. There are a number of different ways to do this. However, one of the best options is to use L-brackets. The L-brackets will be made of metal and will be able to secure the subwoofer enclosure very securely.Use your L-brackets to secure the enclosure to the floor. If not the floor, you can also use the rear deck or even a wall. Once you have fastened the enclosure, you will need to apply silicone around the L-brackets. This is done to make sure that no air leaks out of the enclosure. You, however, may have to skip fastening the enclosure with L-brackets if a spare tire is inside your trunk.
How to wire a rockford fosgate t500.2 in 2 ohm?
To wire a Rockford Fosgate T500.2 amplifier to a 2 ohm load, you will need to connect two 4 ohm subwoofers in parallel. Each subwoofer's positive terminal should be connected to the amplifier's positive output terminal, and each subwoofer's negative terminal should be connected to the amplifier's negative output terminal. This will create a 2 ohm load for the amplifier. Be sure to verify the amplifier's minimum impedance requirements to ensure proper operation.
