ohms?????

[Bootzz 10+ year member]

Wusup guys!!

Well im new to the forum but to give yall a litlle back ground is i rodeo play baseball an football and i was raised on ranches and what not so i dont know to much on he audio gear.

Ok. so i hear about these ohms......what are they and how do i wire my amps to different ohms?????

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[KBCnick 10+ year member]

ohms is just impedance. and your subs control your amp, your amp doesnt control your subs. if you have one 4ohm sub, and wire it to an amp, the amp will see 1 4ohm load, and put out the power for that. power goes up as ohms go down. now if your looking to get some more power out of your amp, then you can wire two 4ohm subs in parallel and the amp will see 2 ohms. also if you power two 4 ohm subs to a monoblock, the amp will see 2 ohms. you can also increase the ohms by wiring in series.

 

[misfit138 5,000+ posts]

lawdy

 

[Bootzz 10+ year member]

ok that makes since

now i have a punch 300.1 mono block(is what i was told by rf's websit(looked up numbers)

now if it has 2 channels is it still considered a mono block?? because that punch has 2 channels

also what do you mean by wiring "parallel??

 

[KBCnick 10+ year member]

if a monoblock has two channels its not really channels theyre just two outputs. and wiring in parallel means if you would take the + from sub 1 and wire it to the + of subs two, and wire the - from sub 1 to the - of sub two, then wire the + and - into the amp, it will reduce the impedance. also, if you plug two 4 ohms subs into a monoblock amp, the amp will also see 2 ohms.

 

[Bootzz 10+ year member]

ok thanks

also how well do you think this set up hit?

2-kicker comp 10's/ kicker 400.1

2 memphis 10's / punch 300.1

 

[KBCnick 10+ year member]

shit idk i've hardly been doing this. i've only heard like 3 types of subs.

thanks for thinking i know a lot of shit though.

 

[skylineTT 10+ year member]

haha^^^ a straight up kinda guy. the CVRs will sound good on that power. that kicker amp will more like 500+ as well so the subs will get enough juice. idk about the memphis subs and im assuming youre talking about PRs? i would go with the kicker stuff though if youre starting out and just want a street beater. that amp does power at 2 ohms so you want dual 2 ohm subs so that you can wire them each down to 1 ohm, then together to 2 ohms... as if it was a dual 1 ohm sub.

 

[Bootzz 10+ year member]

i gotcha and they arent the cvr's they are just the comps but thanks.

and yeah all im looking for is a street beater.

my sister's husband has 2 18's with a 800 watt mtx amp and i wanna get close to how hard it hits if not a lil more.

but i got all 4 speakers and those amps plus a pioneer 55 watt and a lightning audio 150 watt for free so i cant complain lol

also i have an OLD SCHOOL punch 150 lol

its the 2.6 it is verry small lol but SLAMS!!!!! it is a 2 channel and i had it on my kickers and it pushed them enough to notice if you know what i mean lol. my b-inlaw laughed when he saw it lol. it is red and silver. im thinking of hooking it up on my 6x9's for highs lol. but i don't know if i can push all 3 amps

 

[skylineTT 10+ year member]

idk about gettin louder than 18s with comps on 400ish watts though bro. might need to step your game up. lol

 

[kr15 5,000+ posts]

that old punch 150 might be your strongest amp..those old fosagtes pushed nice power. Just running comps on a 400.1 isnt goin to be much in terms of spl at all, but should sound decent and is fine for a starter. Just being comps, the Memphis subs are probly better. (unless its that new street edge shit)

that Kicker probly does 480, Fosgate maybe 360 or so. Both underated and both are good for each application

 

[JimJ 5,000+ posts]

As said earlier, the ohm is the unit of measure of a device's opposition to the flow of current. One ohm of resistance will allow only one amp of current to flow through a circuit when one volt of electrical force is applied to the circuit. If I am redundant in some of the definitions, it is to help to make things clearer.All power sources are designed to operate into some sort of a load. Power supplies are generally designed to maintain a given voltage into some given load. Let's say we have a 12 volt power supply that's designed to deliver 1 amp of current. If we connect a load that has a resistance of 24 ohms, this will allow 1/2 of the power supply's max current to flow through the load. If we connect a second 24 ohm load across the power supply's output terminals, the power supply will be delivering the maximum safe current output possible without damaging the supply. If we connect a third load across the supply, the output current will be 1.5 times as much as the supply can safely deliver (assuming that the supply can maintain it's rated voltage under the heavy load) and the supply will soon blow a fuse or fail. The same thing happens when you connect too low of an ohm load to an amplifier. Lower ohm loads can allow the amplifier to produce more output current (which results in more output power - to be discussed later) but too low of an ohm load will cause the amplifier to fail. The amplifier expects to 'see' a certain minimum resistance (ohms) to assure a limited maximum current flow at maximum output.

Since this is a site is supposed to explain car audio... Lets say we have a 100 watt (we'll cover 'watts' soon) amplifier and it can drive a minimum ohm load of 4 ohms. This means that it can produce 100 watts into a 4 ohm load and any lower ohm load will cause the amplifier to fail. To produce 100 watts, the amplifier will have to deliver 5 amps of current. To produce a current flow of 5 amps into a 4 ohm load, it will have to develop 20 volts across the load (the voltage at the speaker terminals at full power will be 20 volts). Don't let all of these numbers confuse you, I'll cover all of this extensively later in the site. Now, the reason for the numbers... If you enter 4 ohms and 20 volts in the calculator below, you'll see that the current flow is 5 amps. If you reduce the ohm load to 2 ohms, the current flow will double. Since the max safe current output is only 5 amps and the lower ohm load causes more than 5 amps to flow, the amplifier may well be damaged by the lower ohm load.

Basic Car Audio Electronics