Question about Quantum Audio QCA4000D Car Amp

Open Question

I have the qca4000d and the matching subs 2 12 in quantum cozmik serries d212spls how do i wire these two together the amp has 2000wts at 2ohms and 4000 at 1ohm the woofers are 1/2 ohm stable but are duel voice coil 2ohm speakers and the amp is a mono block single channel amp but has speaker out termanials as fallows (++,- - ) looks like 2 channels but its not help

Posted by on

2 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 1 Answer

SOURCE: subs just rumble at higher levels...??? help!

there is a loose piece inside my 10" cozmik series. how do i get it out?

Posted on Apr 15, 2011

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Subs just rumble at higher levels...??? help!


there is a loose piece inside my 10" cozmik series. how do i get it out?

Mar 12, 2010 | Quantum Audio Cozmik QCA2300 Car Amp

1 Answer

Looking for instalation manual for a quantum audio qca4300 amp


Gotta ask, you tried the net? look up manufacturer and model and you can find instruction manuals for most anything. You might have to pay, but your amp is no good if it's not hooked up, right?

Feb 03, 2010 | Quantum Audio Cozmik QCA4300 Car Amp

1 Answer

Overheating amp problem...easially fixed, i think....


depends on the sub rating.

if subs are 2 ohm rated you can ONLY get 1 or 4 ohms..
2x2=4ohm series
2/2=1ohm parallel

if subs are 4 ohm rated wire in parallel
4/2=2ohm

look it up google for diagram if you need one.

Aug 06, 2009 | Car Audio & Video

1 Answer

How do i hook them up to work for 2ohm's


Hello rcantu76,

If your CVR's are 2ohm (model Nr. 07CVR122), you connect the voice coils in series and then parallel both subs to the amp. If the subs are 4ohm (model Nr. 07CVR122), they cannot be wired to 2ohms. Your choices are 1ohm or 4ohms. According to Rockford-Fosgate's data on the P1000-1bd, it is stable at 1ohm.

To wire the 122's at 2ohms, you would connect the sub voice coils in series (jumper one positive to the other negative on each sub), and then connect the remaining positives and negatives to the amp.

To wire the 124's at 1ohm, you would connect all of the positives and all of the negatives together to the amp.

Hope this helps.

May 11, 2009 | Jl Audio 500/1 Car Audio Amplifier

1 Answer

Need wireing diagram for hooking up two as12sq 12-inch square 2


you can run each sub at either 4ohms or 1ohm which means that two of them will run at either 2ohms or .5ohms....be careful how you wire them because most amps cannot handle .5ohms very well and might blow.....to wire them for 2ohms you will need to wire each sub the following way. they have two voice coils make a jumper wire connecting the negative on one coil to the positive on the other coil. what you are left with is a coil with an open positive and the other coil has an open negative. when both subs are wired like this connect the two positive terminals together (1 from each sub) and the two negative terminals together (1 from each sub) now the subs should be wired together at a 2ohm load. run the two positive wires into another combined wire which will run to the positive speaker terminal on the amp. do the same for the negatives

Apr 17, 2009 | Hifonics AS12SQ Car Speaker

1 Answer

Subwoofers pop then immediately produce no sound


Sounds like the two subs wired together might be too much of a load on the amp and it is shutting off. Try wiring the two subs in series. That will reduce the load on the amp but will conversely put out less power. Less is better than none though. In any case check your amp to see what the lowest ohm rating it can see, that ohm rating is where you want your subs and if faced with a choice of either going under (lower numerically) or over (higher numerically) GO OVER!-it is much safer.
Here's an article I wrote that can help explain how to wire the subs to the amp.

OHM LOADS, SUB WIRING, OHM RELATED POWER OUTPUT

SERIES SUBWOOFER WIRING
Wire the positive pole from one voice coil (using wire that is as thick or thicker than your wire from amp to sub) to the negative pole of the other voice coil (on the same sub). This will leave you with a positive pole from one voice coil and a negative pole from the other giving you the two leads that will be hooked up to the amplifier or other subs. When wiring in series, the ohms will go up numerically, and the load on the amp will go down. Almost all amplifiers power output will follow this rule, except some amps such as JL Audio's “Ohm matching” D Class amps.

PARALLEL SUBWOOFER WIRING
Wire the positive pole from one voice coil (using wire that is as thick or thicker than your wire from amp to sub) to the positive pole of the other voice coil (on the same sub). Then wire the negative to the negative in the same way. You can then wire to the amp or other subs. When wiring in parallel the ohms will go down numerically, and the load on the amp will go up. Almost all amplifiers power output will follow this rule, except some amps such as JL Audio's “Ohm matching” D Class amps.

MULTIPLE SUBS USING SERIES AND PARALLEL WIRING
In order to match your amplifiers ohm rating you can use parallel and series wiring together, just keep things even for power distribution and to avoid phase issues.
Example: I have two “Type X 12” subs” that have dual 2ohm voice coils and have to match my “Amplifier X” ohm rating of 2ohms mono. In this case, I would wire each subwoofer in series (giving me a 4ohm load), and then wire the two subs in parallel to get my 2ohm mono load. When wiring multiple subs just, treat each sub as a voice coil and wire accordingly.

POWER OUTPUT AND OHM LOADS
For example if “Amplifier X” can make 100watts@8ohms, it would make 200watts@4ohms and 400watts@2ohms. However with every drop in ohms the amplifier is put under more pressure. It starts to create a lot of heat, distortion figures begin to climb, damping rates drop, and some amps even throw power spikes when clipping. SO BE SURE TO CHECK YOUR AMPS RATING AND DO NOT EXCEED IT!

-Dynami

Apr 04, 2009 | Alpine Car Audio & Video

2 Answers

Unsureness of wiring configurations.


Mamola,

Get an amp with at least 200 Watts RMS. The RMS value is what is important about driving Subs. This could be proclaimed to be a 1000 Watt amp. REad the RMS value.

Wiring. It is better to series your Speakers to give them and your amp more reliability,

Get a Mono or Bridgeable amp. If it si bridgeable, BRidge the output as described in the manual you get. Some Amps have a diagram right on the output..

AMP+ to Sub1 +
Sub1 - to Sub2 +
Sub2 - to Amp -

Get a 4 Guage wring kit. Run your power wiring down the Drivers side, and Audio signal wiring down the Passenger side, keep the two separate.

Nov 26, 2007 | Kenwood 12" 4-Ohm Single-Voice-Coil...

Not finding what you are looking for?
Quantum Audio QCA4000D Car Amp Logo

Related Topics:

43 people viewed this question

Ask a Question

Usually answered in minutes!

Top Quantum Audio Car Audio & Video Experts

xxxxxx xxx

Level 3 Expert

4834 Answers

yadayada
yadayada

Level 3 Expert

75005 Answers

The Knight
The Knight

Level 3 Expert

73619 Answers

Are you a Quantum Audio Car Audio and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...