Sub intallation help~

[Taiyaki]

So I have two 12" CVRs 4ohms each @ 800rms (together) and a Kenwood mono amp that does 900rms @ 2ohms. I looked on the 12volt site for wiring diagrams but it only says how to wire them down to a 1ohm and 4ohm load.
How would I wire it to a 2ohm load?

Thank you

[sqcomp]

If they're both single 4 Ohm, wire them in parallel. In a parallel circuit, the current flow increases and the impedance decreases.

http://www.bcae1.com/images/gifs/impspkpr.gif

[Taiyaki]

Oh sorry I forgot to say that they are DVC

[Lil Abner]

The subs, is each voice coil 4-ohms? So are they dual 4-, dual 2-, or dual 8-ohm subs? Your post is unclear.

[Taiyaki]

Im going to say that the sub itself is 4ohms. Not each coil is 4ohms. All the kicker site specs say is "4ohm DVC". It doesnt go into any deeper detail sorry.

[Lil Abner]

Are they these??

http://www.halfpricecaraudio.com/Kicker-CVR12-12-Sub-Dual-4-Ohm-800-Watts-10CVR124.htm

[sqcomp]

http://mobile.jlaudio.com/support_pages.php?page_id=161

Try this...

[derickveliz2]

Here is another one... LINK (http://www.crutchfield.com/S-PCZ3LZVQ1ZW/learn/learningcenter/car/subwoofers_wiring.html)


D.

[Taiyaki]

Are they these??

http://www.halfpricecaraudio.com/Kic...s-10CVR124.htm

Yeah pretty much the same but I have the Aluminized one

http://www.kicker.com/compvr_aluminized

I looked at both sites but I couldnt find how to wire two 4ohm DVC subs down to 2ohm load.

This is the amp that I bought
http://www.bestbuy.com/site/Kenwood+-+1800W+Class+D+Mono+Amplifier+with+Low-Pass+Crossover/9763288.p?id=1218169466067&skuId=9763288

So would it be possible to wire my 4ohm DVC to 2ohm? Sorry Im kind of new to this

[Taiyaki]

It says that my amp is 1ohm stable, but does that mean I can wire it parallel/parallel to 1ohm load and be ok? idk the specs says 900watts @ 2ohm.

[bzinn 1]

do you know how to tune the amp using a test tone? if so figure out how many watts the sub can take at 1Ohm and mutltiply it by the Ohms you want,then take the square root of that.

Then burn a test disk using say 50 hz tone,I get mine at realm of excursion......

Find out the 75% volume level of the deck....if deck goes to 40,then 30 is the highest you ever want to go to for most cases.

Start at amp with all gains down,crozzover points all the way down,play the tone disk at say 25% volume and when the tone gets the loudest,turn the crossover back just a bit till it starts to soften in volume.....now you are basically crossed at 50hz....good point to tune most subs.

Now we want to work the gains,using a DMM take the info you got at the square root of the watts x ohm and that is your AC currant from the amp going to the sub you want to bring gain up to.

Using the DMM turn up the gain with deck at 75% volume,tone disk playing,sub hooked up,and with DMM on the - and + of the amp turn the gain till you get that square root number and now amp is going to be perfectly tuned to correct outut of power.....now test the sub playing some tunes and see if amp gets hot,if it gets hot pretty quick then it is not liking being at 1Ohm.....

[bzinn 1]

also you are corrct...2 D2 subs cannot be ran at 2 Ohm....just not possible...eiter 1 or 4 if I remember correctly

[Viperoni]

also you are corrct...2 D2 subs cannot be ran at 2 Ohm....just not possible...eiter 1 or 4 if I remember correctly

Yes they can, coils in series and the subs in parallel.

To wire 2 D4 subs to 2ohms, just use one coil from each sub and wire the 2 coils in total in parallel.

[sqcomp]

• 500 watts RMS x 1 at 4 ohms (900 watts x 1 at 2 ohms)
• 1-ohm stable (output regulated to 900 Watts)

http://www.kenwoodusa.com/Car_Entertainment/Amplifiers/KAC-9105D

^This is from the Kenwood site. Soooo....according to the manufacturer, you can run this at 1 Ohm.

2 DVC drivers with Voice Coils in Series / Parallel

Connecting the two voice coils of each driver in series (+ to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

Dual-4 Ohm Subwoofer: 4 Ohms


2 DVC drivers with Voice Coils in Parallel / Parallel

Connecting the voice coils of each driver in parallel (+ to +, - to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

Dual-4 Ohm Subwoofers: 1 Ohm

You CAN run ONE of the woofers into 2 ohms.

[Taiyaki]

• 500 watts RMS x 1 at 4 ohms (900 watts x 1 at 2 ohms)
• 1-ohm stable (output regulated to 900 Watts)

http://www.kenwoodusa.com/Car_Entert...iers/KAC-9105D

^This is from the Kenwood site. Soooo....according to the manufacturer, you can run this at 1 Ohm.

2 DVC drivers with Voice Coils in Series / Parallel

Connecting the two voice coils of each driver in series (+ to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

Dual-4 Ohm Subwoofer: 4 Ohms


2 DVC drivers with Voice Coils in Parallel / Parallel

Connecting the voice coils of each driver in parallel (+ to +, - to -) and the drivers themselves in parallel (+ to +, etc.) will result in the following impedances:

Dual-4 Ohm Subwoofers: 1 Ohm

You CAN run ONE of the woofers into 2 ohms.

Thank you! Ok so my amp can be wired to a 1ohm load. Excellent!
My next question is that there is a + and a + dot, same with the negatives. Would it be like this?
http://i1110.photobucket.com/albums/h460/TakaPhotoartistry/2_4ohm_dvc_1ohm.jpg

or would the dots be on the other side?

[Lil Abner]

Yeah, that diagram looks correct for wiring your 2 subs into a 1-ohm load. Basically all the positives tied together, all the negatives tied together. Should be an easy install for you.

When you get it installed, make sure you're x-over is set correctly. Also, start with the gains down low. You don't want to fry anything.

[Taiyaki]

Ok so Im not able to install my subs yet because im still making the custom box but for now Im just going to wire my amp and make sure everything is ok.
I have a box they came with and was wiring it but when I got to my mono amp, I saw that it had two speaker terminals (+ + and - -). So do I just use one + and one -?

[Lil Abner]

Well, you're going to need to "bridge" the amplifier. The owner's manual should tell you which (+) and (-) terminals to use. Or look at the amplifier itself. Usually it tells you how to bridge the amp. But since it's a mono amp, I would assume you're correct to just use one (+) and one (-). But always best to read the manuals.

[bzinn 1]

Yes they can, coils in series and the subs in parallel.

To wire 2 D4 subs to 2ohms, just use one coil from each sub and wire the 2 coils in total in parallel.

Yeah sorry I typod 2 instead of 4...2 D4 can be ran as that diagram shows to 1 Ohm....and it is 1 D2 sub that can be brought to 1 Ohm....

My typing sucks.

[Taiyaki]

Quick question. So I hooked everything up and sounds nice. Since my amp is 900rms and my subs are 800rms I set the gain to about 50% and push the subs pretty loud. I would like to push them more but worry about blowing them. what would be a safe setting on my amp to push them harder?

[Lil Abner]

Yeah, you can turn it up, but as soon as you hear distortion, back off!! When I competed in car audio, I would over power my speakers all the time. Doesn't hurt if you make sure you don't have distortion!

[derickveliz2]

Check this out!

Tuning Your Subs (http://www.crutchfield.com/S-P0mfk76iIYf/learn/car/subwoofers/tuning.html?omnews=7556921)


http://lp.crutchfield.com/crutchfield?set=image[/learningcenter/sub-tuning/gain-down-1.jpg],width[200]&call=url[file:resize.chain]&sink

D.

[_S7V7N_]

If your amp is MONO do not " bridge " it . It has four post but it knocks it down inside the amp so you'll have ++ -- but it's actually + - inside the amp. They just do this to make it easier to wire your subs in on the outside so you can use a good sized speaker wire from your sub to your amp, usually about 10 gauge.

Here's the Specs
# Kenwood KAC-9105D Class D 1800 Watts Max
# CEA-Compliant Amplifier
# 500 watts x 1 at 4ohms
# 900 watts x 1 at 2 ohms
# 1200 watts x 1 at 1ohms
# 1800 watts x 1 Max Power Output
# 1 Ohm Stable
# Fully Digital Power Supply
# Built-In High Pass and Low Pass Filters
# You can link multiple KAC-9105D amps together
# Short circuit, DC offset, overload, and thermal protection circuitry
# Tuned Bass EQ (0-18 dB @ 40 HZ)
# Adjustable Phase Control: 0 or 180 degrees)
# Built In Cooling Fan
# MOSFET Power Supply
# Speaker Level Input
# Signal Sensing Auto Turn On
# Frequency response: 10-200 Hz
# All terminals are mounted on one side for easy installation
# Aluminum die cast heat sink
# Input Sensitivity: 0.2 - 5 volts
# Gold-plated RCA level inputs
# Gold-plated screw terminals
# LED Power-On Indicator
# Preamp RCA output
# Signal Sensing Auto Turn-On
# 4 Gauge Power and Ground Inputs
# Dimensions: 13 3/4" x 2 5/16" x 9 3/8"

It doesn't specify on the Voltage you'll need to get these results meaning if your battery is at 14.1 Volts or lower, which if you're using your factory battery and alternator you're more than likely going to be in the 13's so you're probably not pushing the full 900 out of it @ 2 ohms and @1 ohm it states 1200 watts. Them subs will take quite a bit of power as long as your box is the right size, and you're not sending a completely clipped signal to them. I've had these same subs for over a year now and i'm pushing 600 rms to them with no problem at all.