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Can i hook up two 3 ohm subwoofers to the rt2500

Two 3 ohm subs on the amp from subwoofer out

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Using 2 3ohm speakers in parallel is not advisable on this amp. 1.5ohms is too much of a load on the final. Use the speakers in series if your going to. (+) sp (-)(+) sp (-)

Posted on May 22, 2014

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I have an old school autotec xs 1500.1 and need to know how to hook up the outs to make it 1 ohm


Since it is a mono block amp, it depends on your subwoofer (s), and how you wire them to the amp.

Single 4 ohm sub would be just that, 4 ohms.
Single dvc 4 ohm sub, with both voice coils wired parallel would be 2 ohms.

2 dvc 4 ohm subs wired parallel would be a 1 ohm load.

Feb 20, 2015 | Ohm Car Audio & Video

1 Answer

I have 3 Kenwood 12'inch subwoofers need to know how to wire them up to a Kenwood KAC-9105D


Follow the link and use the first diagram which illustrates wiring the subs to 2.66 ohms http://www.the12volt.com/caraudio/woofer_configurations.asp~Q~3~I~42

Remember that that amp is one ohm stable so you will not be getting the most out of that amp with that subs set up. The subs will only see 650 to 850 watts total...so each sub will only see about 215 - 275 watts a piece. Find out what the RMS wattage of your subs are each an determine if the wattage I mentioned above meets those requirements.

Sep 27, 2012 | Kenwood 12" 4-Ohm Single-Voice-Coil...

1 Answer

What's the best way to hook up 2 Hifonics hdl12d4 subwoofers to a mono amp


Ok, your post has two different models listed. Let's start with something you need to know about your amplifier. Is it one ohm or two ohm stable. This will make a difference. Also, whether your subs are single voicecoil (HFI12s4) or dual voice coil (HDI12d4).

Let's start with the easy scenario. Let's say your amp is two ohm stable and you have two single voice coil subs. It's simple. You go from the positive of the amp to the positive of both subs and the negative of the amp to the negative of both subs. This will provide a 2 ohm load to the amplifier, thus pulling all the power out of it.

Unfortunatley, if you have two dual voice coil subs, you won't be as efficient. You will only have the options of a 4 ohm load or a 1 ohm load.

This is where having a one ohm stable amp would come in handy. If the amp is one ohm stable, hook the positive of the amp to all 4 of the positives on the subs, and hook the negative of the amp to all 4 negatives of the subs. This produces a 1 ohm load.

WARNING!! If you have a 2 ohm stable amp DO NOT use the last wiring scenario. It will fry your amp.

Now, the last is a little trickier. This is for two dual 4 ohm subs. Follow closely. Hook the positive of the amp to one of the positives of each sub. (do the next step to both subs) Go from the negative of the voice coil that you hooked positive from the amp is hooked to, and hook that to the positive of the unused voice coil. Then go from the negative of that voice coil and hook to the negative of the amp. Make sure this is done on both subs. This will give you a 4 ohm load.

Hope this helps

Aug 31, 2011 | Hifonics HFI 12S4 12 DVC Subwoofer 600...

1 Answer

How to hook it up for one ohm


oh yes the JBL GTi W15GTI Mkll. this subwoofer is a dual 6 ohm voice coil subwoofer. This is impossible to run this sub alone and get 1 ohm you will need another JBL GTi W15kll. the lowest impedance you can go to is 3 ohms. you can achieve this by connecting the positive terminals together and then running a wire from the two positives to the positive terminal on the amp. then connecting the negative terminals together and then running a wire to the negative terminal on the amp. this is a real nice sub it just has that one down fall of having a six ohm voice coil.

Aug 01, 2011 | JBL GTi W15GTi MkII Car Subwoofer

1 Answer

How do you hook up the speaker wire to the ab sub out and what is the best way to hook them up at what ohm


Not sure what you mean by AB but being that this is a monoblock or 1 channel amplifier you can only hook it up 1 way. Verify the polarity from your speaker box. + to + and - to -. As far as your impedance is concerned this amp is stable to 1.5 ohms but for this case we will assume you have two 4 ohm subwoofers. When you parallel these together you will have a total effective load of 2 ohms on the amplifier. This is a stable operating impedance for the amp.

Other impedance options are:

two 8 ohm speakers = 4 ohm load
three 8 ohm speakers = 2.66 ohms

If you have dual voice coil subwoofers then parallel the coils on each sub + to + and - to -. Depending on the impedance of each sub you may then have to wire the individual subwoofers in series. Here is an example.


2 dual voice coils with 4 ohm taps

Each subwoofer with the coils in parallel would be a 2 ohm load if you were to then parallel the two subwoofers together you would have 1 ohm total load on your amp. This is BAD for your amp. Your option is to run the subwoofers in series.

To run the speakers in series is simple. The + from one speaker and the - from the other will be connected to the amp. The other + and - from the speakers will be connected together.

Here is a wiring diagram from kicker.

http://www.kicker.com/dvc_wiring

Jun 11, 2011 | Jl Audio Slash 500/1 Car Audio Amplifier

1 Answer

Is it possible to hook the infinity bu-1 subwoofer to a home theater system where the subwoofer output is straight power say it"s like 25 watts coming out of that one channel and before the original...


In general higher speaker impedance is safer than lower impedance for the amp. Don't expect anything impressive re: audio output from a passive (unpowered) sub if your HTS says it pushes only 25 watts. Without frequency bandwidth and distortion noted the spec is virtually useless as a comparison.

The BU-1 is a powered sub that accepts either RCA Line Level or HIGH LEVEL amplifier power. If you use the latter, impedance is a non-issue because the input feeds the BU-1's internal amp, not the speaker directly. You should be okay.

Perhaps if we knew some specifics about the HTS we could do more than guess.

Jul 21, 2010 | Infinity BU-1 Speaker

1 Answer

Why want my subwoofer play like it's supposed to? It barely plays


check your ohm load on that audiobahn sub some amps run at an bypass or ohm load and then kick off if its the sub itself is not a 2ohm stable or 4ohm stable

Mar 03, 2010 | Car Audio & Video

1 Answer

Why doesnt my jl 1000.1 pick up my 13.5w7


ohm load check the way you wired it if the amp can handle 1ohm make the sub 1 ohm dule 2 ohm subs hook the neg from one coil to the pos on the other then take the empty neg hook it bridged to the neg on the amp and empty pos to the pos on the amp also check to see if you hooked it up bacwards subs dont hit hard when they are beating in and not out

Feb 06, 2010 | Jl Audio 13W7 Car Subwoofer

2 Answers

How to wire 2 dvc subs to a orion 2150sx ? dont know the wire colors or how to hook um to my amp.


what impedence are the voicecoils?
Dual 4 - Dual 2 - Dual 1 ??

Orion SX / GS / HCCA amp Wiring guide:

Orange = Right Positive
Black/ Orange = Right Negative
Yellow = Left Positive
Black/ Yellow = Left Negative
Blue = 1+1

Bridging of SX or HCCA Amps:
1. Use the Orange wire for Positive.
2 Use the Black/ Yellow wire for Negative
3. Push "in" the Mono Button
That amplifier is only 4ohm mono stable - so assuming the subs are dual 4 ohm voicecoils...

First wire both in Parallel Independently So each subwoofer is now a 2 ohm load. (combine + and + - and- on both subwoofers)

Now Take a positive on one voicecoil of sub #1 and attach to amplifier+(orange)

Take a - on that same subwoofer and attach it to a + on the OTHER subwoofer.

Finally, take a - from the second woofer to the amplifier -(black/yellow)

Now you have a 4 ohm load on your bridged channels.


Thanks for using FixYa - a FixYa rating is appreciated!!

Feb 23, 2009 | JBL 1200GTi Car Speaker

1 Answer

MA Audio MA 1200XL Car Subwoofer


that subwoofer has dual 4ohm voice coils, if your amp can handle 2 ohms, you would put a wire from the positive (+) on the amp to the positive on both connectors on the sub, then hook the negative (-) on the amp to the negative on both the sub connectors that will be a 2 ohm load on your amp make sure your amp at 2 ohms is not more than 600 watts RMS or 1200 max.

Jan 01, 2009 | MA Audio MA 1200XL Car Subwoofer

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