Help me figure out ohms!

[BigRooster 10+ year member]

Ok everyone I'm running a JVC KD-r320 Headunit, the manual says it accepts 4-8 Ohms of total load.

I need help figuring out how many ohms I will be running, I'm testing something. Keep in mind every speaker wired to the headunit will be directly connected to the headunit. The headunit has both left and right front and rear channels, so four channels total.

Here we go. I have a 4 ohm tweeter running off the right and left sides on the front channel, so that's two tweeters total off seperate channels.

On the rear right channel I have two 6 ohm speakers, while on the left rear channel I have three 6 ohm speakers.

RUNDOWN:

Front Right Channel: One 4 Ohm Tweeter

Front Left Channel: One 4 Ohm Tweeter

Rear Right Channel: Two 6 Ohm Speakers

Rear Left Channel: Three 6 Ohm Speakers

So please help me everyone I'm still new at this. Don't ask why I'm hooking so many speakers up I'm just going to.

So how many ohms will the headunit be handling? Please help! Thanks!

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[ahole-ic]

Ok everyone I'm running a JVC KD-r320 Headunit, the manual says it accepts 4-8 Ohms of total load.
I need help figuring out how many ohms I will be running, I'm testing something. Keep in mind every speaker wired to the headunit will be directly connected to the headunit. The headunit has both left and right front and rear channels, so four channels total.

Here we go. I have a 4 ohm tweeter running off the right and left sides on the front channel, so that's two tweeters total off seperate channels.

On the rear right channel I have two 6 ohm speakers, while on the left rear channel I have three 6 ohm speakers.

RUNDOWN:

Front Right Channel: One 4 Ohm Tweeter

Front Left Channel: One 4 Ohm Tweeter

Rear Right Channel: Two 6 Ohm Speakers

Rear Left Channel: Three 6 Ohm Speakers

So please help me everyone I'm still new at this. Don't ask why I'm hooking so many speakers up I'm just going to.

So how many ohms will the headunit be handling? Please help! Thanks!

Assuming these are all wired in parallel:

Front Right Channel: One 4 Ohm Tweeter = 4 ohms

Front Left Channel: One 4 Ohm Tweeter = 4 ohms

Rear Right Channel: Two 6 Ohm Speakers = 3 ohms

Rear Left Channel: Three 6 Ohm Speakers = 2 ohms

That head unit won't last long and it will sound like garbage. I would strongly suggest you change from your horribly ghetto plan. You will not like it. Simply hooking up a ton of speakers won't impress anyone. Everyone you show will laugh and point behind your back. Save yourself the embarrassment and headache.

 

[MisterDeadeye 10+ year member]

Assuming these are all wired in parallel:
Front Right Channel: One 4 Ohm Tweeter = 4 ohms

Front Left Channel: One 4 Ohm Tweeter = 4 ohms

Rear Right Channel: Two 6 Ohm Speakers = 3 ohms

Rear Left Channel: Three 6 Ohm Speakers = 2 ohms

That head unit won't last long and it will sound like garbage. I would strongly suggest you change from your horribly ghetto plan. You will not like it. Simply hooking up a ton of speakers won't impress anyone. Everyone you show will laugh and point behind your back. Save yourself the embarrassment and headache.

I started a post trying to convey this same message, but I couldn't word it nicely enough so I gave up. You need to get rid of all of the equipment you have and start over.

 

[BigRooster 10+ year member]

Ok then thanks everyone! I need some more help though.

Right now I have:

Front left channel: 4 ohm tweeter

Front right channel: 4 ohm tweeter

Left rear channel: 6 ohm speaker

Right rear channel: 6 ohm speaker

Right rear channel again: 6 ohm subwoofer

I don't have an amp I can run at the moment and this sub sounds good on the headunit. I was wondering what the ohms are with that setup I have now listed above and what I could do (if anything) to send more power to the sub or make it louder without an amp. Thanks!

 

[IonRL205 10+ year member]

Ok then thanks everyone! I need some more help though.
Right now I have:

Front left channel: 4 ohm tweeter

Front right channel: 4 ohm tweeter

Left rear channel: 6 ohm speaker

Right rear channel: 6 ohm speaker

Right rear channel again: 6 ohm subwoofer

I don't have an amp I can run at the moment and this sub sounds good on the headunit. I was wondering what the ohms are with that setup I have now listed above and what I could do (if anything) to send more power to the sub or make it louder without an amp. Thanks!

You can't send more power to the sub without an amp. Quit being ghetto and do **** right. I'm pretty sure what sounds good to you sound like complete horse shit to 95% of this forum.

 

[matt_bennett05 10+ year member]

Other than an amp you shouldn't even try powering a sub in my opinion. I've seen it done but dear lord it's rainmanish.

 

[MisterDeadeye 10+ year member]

You're trying to power a subwoofer with a head-unit? That's not going to work, sir.

 

[BigRooster 10+ year member]

You can't send more power to the sub without an amp. Quit being ghetto and do **** right. I'm pretty sure what sounds good to you sound like complete horse shit to 95% of this forum.

Well thanks for your input. But if you please, what exactly am I doing wrong? I did not know there was a rule you had to run a subwoofer off an external amp, nor do I think it's necessary. It is necessary for being incredibly loud but you can still sound good without an amp. I know what I'm doing I just get confused with multiple speakers and ohms. In fact I have a 1600 Watt amp but I do not have the things necessary to hook it up in my truck because of space. This amp is 22 inches long and weighs 5 pounds, and I have nowhere to really put it or a subwoofer that will match the wattage in a single cab truck. The only reason I have the sub is because the door speakers weren't doing justice to bass, they're crappy in the bass response. The sub I have is only a 6 inch sub in a special ported box and it does sound good I'll have you know, it's nice and clean and audible, but not too loud.

Now on to the question.

How many ohms would this setup be?

Front left channel: 4 ohm tweeter

Front right channel: 4 ohm tweeter

Left rear channel: 6 ohm speaker

Right rear channel: 6 ohm speaker

Right rear channel again: 6 ohm subwoofer

 

[accuab 10+ year member]

Each channel with a single speaker is that ohms. The right rear is 3 ohms.

 

[THATpurpleKUSH 5,000+ posts]

Subwoofers need more than 10wrms to get moving. Stop trying to cut corners and listen to what we are telling you.

 

[MisterDeadeye 10+ year member]

You're just going to ruin that cheap head unit and have to replace even that, if you keep doing what you're doing.

 

[audiobaun 5,000+ posts]

//content.invisioncic.com/y282845/emoticons/beatdeadhorse5.gif.5d70132dea1eb89b73bf2fdbb6027dd6.gif Fail .Get an amp, even some used crap amps, and at least you will possibly save a speaker or two, along with the HU,.:slap:OHH man,Why???

 

[disturbed471985 5,000+ posts]

10watts of fury.. Im in for flex videos... Also, pics of the guts of that HU when it burns out..

 

[subzero 5,000+ posts]

You cannot run all those things without a passive crossover. And when you do, this is your final impedance.

Front right channel: 4 ohm tweeter + Right rear channel: 6 ohm speaker = 2.4 ohms assuming they are on the same channel

Front left channel: 4 ohm tweeter + Left rear channel: 6 ohm speaker = 2.4 ohms assuming they are on the same channel

And since you did not say whether or not you had a 2 channel or 4 channels, again, that **** matters.

If you have a 2 channel amp, then you are talking about running a 3 way setup. In that case, you need 2 passive crossovers and a subwoofer crossover like this Subwoofer Crossover 8 Ohm 150 Hz 200W 260-220

and if it is a 4 channel amp, then you can leave the front channels on full range and use the passive crossovers or you can go with a HPF = High pass filter setting on the amp. and use the front channels or 1,2 channels or a,b, channels. and bridge the rear of the amp 3,4 or c, d channels and run them on a LPF = Low pass filter.

 

[disturbed471985 5,000+ posts]

^^ OP has no amp he is using the HU's internal amp!!!! Bet it sounds great..