Un-educated

[conn.am 10+ year member]

Im so lost when looking for an amp. I dont no what subs work with what amps. I dont no what the amount of channels is for, i dont understand what the diff. between running at 4ohm or 2ohm. Can anyone help a fellow out?

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[Worlddre 5,000+ posts]

http://www.bcae1.com

 

[Prowler573 5,000+ posts]

Do you have the subs you intend on using already or are we starting from scratch here?

Follow the link that Dre posted. It's a time-consuming read but well worth any investment towards that end you might choose to make...

 

[conn.am 10+ year member]

Ive yet to buy anything...just planning ahead

 

[conn.am 10+ year member]

That website might be usefull for some people but i just want to know why there are subwoofers at 2ohm and subwoofers at 4ohm, what the difference is. and what the mono or 2 channel means...

 

[.::DuD3::. 10+ year member]

That website might be usefull for some people but i just want to know why there are subwoofers at 2ohm and subwoofers at 4ohm, what the difference is. and what the mono or 2 channel means...

//content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif that website tells you all that stuff //content.invisioncic.com/y282845/emoticons/fyi.gif.9f1f679348da7204ce960cfc74bca8e0.gif

 

[Prowler573 5,000+ posts]

The various voice coil configurations available are mostly to offer a variety of wiring options to best fit your specific application.

Here's a handy link that will give you a quick reference on the available final resistance values for various VC configurations for a single sub or up to 4.

A mono amp provides a single (1) output channel.

A 2-channel is exactly what it sounds like ~ it has 2-channels of output.

 

[conn.am 10+ year member]

Ok so if its a 2 channel amp that means it can power two subs or

 

[Duke 10+ year member]

If its bridgeable, then you can wire the two channels together to pull more power to a single sub. Remember, if the amp is 2 ohm stereo stable, then you can only bridge a load on it of 4 ohms. That would pull the same amount of power as the a 2ohm sub would on each channel.

Basically, if an amp is bridgeable, then you wire the positive of one channel, and the negative of the other to the sub, and leave the remaining positive and negative of the two terminals untouched. It usually has a small illustration on the amp showing you which two wires to connect.

 

[Jacobman 10+ year member]

2 and 4 channel amps are mainly used for your speakers and with a mono amp you can wire multiple subs with it, because you wire sub to sub to amp.

 

[Duke 10+ year member]

Your class D amps are usually for subs, and A/B amps usually for mids and highs. I understand that A/B amps have alot lower distortion.

 

[thch 10+ year member]

channel = distinct audio signal. eg, left channel and right channel. or left-front right-front ect... or center or subwoofer (for various applications). basically a channel is an actual amplifier. a 4 channel amp has 4 amplifiers in one case.

channels isn't the number of speakers. for instance, a two channel amp can be combined to work on one speaker (bridging). and multiple speakers can be run off a single channel. (in home line arrays, sometimes 60 speakers are run from a single amplifier channel!)

as for "ohms", basically it stems from power. high power is low voltage and high current, or high voltage and low current. 8ohm home speakers are more for high voltage with low current. but in a car, the battery is made for low voltage, high current. thus in a car, it was decided that 4ohm speakers would be better.

for aftermarket speakers, the choice of speaker impedance (ohms) is based upon the amplifier used. keep in mind that multiple speakers can be combined in various combos to get different impednaces. this topic is important as there is typically a choice between 4ohm(1ohm) and 2ohm. choosing the correct one will allow you to get full power from the amplifer, while the other will allow only half power.