Do I need amp if I have sub?
Yes. You will not need an amp for your sub, because one is built in. You haven’t mentioned your main speakers. If you already have or opt for passive speakers, you will need an external amp.
Which amp is best for subs?
Car stereo amps range from one to six channels. A mono-channel amp is often ideal for powering subwoofers since it can output a lot of power with low impedance.
What is the difference between subs and amps?
A subwoofer has impedance (measured in ohms) which represents the “load” an amplifier will sense on its output. An amplifier will put out different amounts of power (watts RMS) based on the impedance load it “sees.”
How big of an amp do I need?
Generally you should pick an amplifier that can deliver power equal to twice the speaker’s program/continuous power rating. This means that a speaker with a “nominal impedance” of 8 ohms and a program rating of 350 watts will require an amplifier that can produce 700 watts into an 8 ohm load.
How do I match my speakers to my subwoofer?
First, it’s best to stay in one brand for each purpose. Choose one brand for all of your main speakers, so that your center channel speaker perfectly transfers sound between the left and right main speakers. For your surround sound, stick to one brand for the entire system, and the same goes for your subwoofers.
What size car amp do I need?
Look for speakers with a top RMS rating of at least 50 watts RMS to go along with the amp. For larger vehicles and for those who just want more volume, you should step up to at least a 75 watts RMS per channel setup. A difference of 5 or 10 watts either way won’t make any difference and probably can’t even be heard.
What amp do I need for 300 watt speakers?
Sample Amplifier Power Rating Chart:
| # of Speakers | Each Speaker Rating (RMS) | Recommended Amplifier Power (RMS) |
|---|---|---|
| 1 | 100 watts | 30-100 watts |
| 2 | 100 watts | 60-200 watts |
| 3 | 100 watts | 90-300 watts |
| 4 | 100 watts | 120-400 watts |
Should amp be bigger than sub?
An amp need not be bigger than a sub as long as its capabilities evenly match the sub’s specifications. However, it’s always better to get an amp that puts out a bit more power than your sub, especially if it’s a passive sub. If you have an active sub, you may not even need an external amp at all.
How do I match my speakers to my amp?