Jump to content


titanbangle

Quantum Amplifier Impedance Mix

Recommended Posts

Good day Friends of Caraudio, today I am upset because I have a question with the audio of my car, I have a QE2400.4 Quantum Amplifier, it is a 4-channel amplifier, I am currently using it with 2 speakers 6x9 pioneer 230W max @ 4 Ω and I was thinking about acquiring a pair of Pionner subwoofers ts-w260d4 of 350 W RMS and double coil and 4 Ω, but when reading the characteristics of the Ampli I am a doubt, the information is the following:

 

4 x 125 Watts @ 4 Ohm Stereo

4 x 250 Watts @ 2 Ohm Stereo

2 x 750 Watts @ 4 Ohm Bridged

 

my question is, can I leave the speakers working as usual until 4 Ω at 125W on two channels and on the other two add the subwoofer at 2 Ω and work with the 4 at the same time? Is it possible to work like this? What do you recommend me to do?

Thanks in advance.

Share this post


Link to post
Share on other sites

You might be better off getting a mono amp to power those subs with and just use that 4 ch amp to power your speakers with.

 

Btw, those Quantum amps are a joke for ratings.


97 4 dr. Tahoe

Interstate battery

Alpine 9835

Polk Audio MM6501 comps

Wolfram amps coming soon, 3000.1, 125.4

2 Sundown Audio X 15's Tuned @ 30Hz.

Knukonceptz/Royal Excelene wiring

Share this post


Link to post
Share on other sites
Good day Friends of Caraudio, today I am upset because I have a question with the audio of my car, I have a QE2400.4 Quantum Amplifier, it is a 4-channel amplifier, I am currently using it with 2 speakers 6x9 pioneer 230W max @ 4 Ω and I was thinking about acquiring a pair of Pionner subwoofers ts-w260d4 of 350 W RMS and double coil and 4 Ω, but when reading the characteristics of the Ampli I am a doubt, the information is the following:

 

4 x 125 Watts @ 4 Ohm Stereo

4 x 250 Watts @ 2 Ohm Stereo

2 x 750 Watts @ 4 Ohm Bridged

 

my question is, can I leave the speakers working as usual until 4 Ω at 125W on two channels and on the other two add the subwoofer at 2 Ω and work with the 4 at the same time? Is it possible to work like this? What do you recommend me to do?

Thanks in advance.

To use the bridge for your subs you need to run 4 ohm.

 

2 ohm will kill your amp.

You might be better off getting a mono amp to power those subs with and just use that 4 ch amp to power your speakers with.

 

Btw, those Quantum amps are a joke for ratings.

DB Drive junk lmao.. its just a db drive amp with cheaper internals.

 

Sent from my Moto G (4) using Tapatalk

Share this post


Link to post
Share on other sites

Yes, you can. having different impedances on different channels of a multi-channel amp is never a problem as long as none of them are below their specified minimum.

 

 

But don't get caught up with power ratings on an amp like that.

Judging by the 40A of fuse protection it is drastically over-rated. Figure on 100x4 at 2 ohms. Probably ~75x4 at 4 ohms.

So if you have a pair of 4 ohm speakers on 2 channels and a pair of dvc 4's on the other two you'd be looking at about 75w per speaker and about 100 per sub.

 

Don't run the subs at 2 ohms per channel. Wire them for 4 and bridge those two channels.

 

https://www.the12volt.com/12voltimages/2_4ohm_dvc_4ohm.gif


'04 Chrysler Town & Country (it was cheap and I have a family)

  • HU: Stock - Scosche SLC-4
  • Comps: Lanzar Opti6c w/Opti400x4d
  • Rear fill: Stock
  • Sub: Lanzar Opti1232D 3cf 29hz w/Zed Opti1000.1d

Share this post


Link to post
Share on other sites

yes 2 ohm stereo will work but u can also run 2-4 speakers off 2 channels and bridge other 2 channels to 1 sub ported., more power to 1 sub in louder box.. i suggest u get a mono amp (let us help u pick one) and u can get 1 pioneer 3003 pro much better sub ($75 ebay) or sound qubed hds $85 on sale now and run maybe 500 rms to it from the mono amp at 2 or 1 ohm depending on sub u get..


KENWOOD X301 HU, PRECISION POWER Phantom 1000, FU 750 12, 2.1cfad ported, soundqubed 6.5" coax/doors, hp & lp xover on hu, AGM starting batt...

Boomin_tahoe said:
2 ohms rule

Share this post


Link to post
Share on other sites
yes 2 ohm stereo will work but u can also run 2-4 speakers off 2 channels and bridge other 2 channels to 1 sub ported., more power to 1 sub in louder box.. i suggest u get a mono amp (let us help u pick one) and u can get 1 pioneer 3003 pro much better sub ($75 ebay) or sound qubed hds $85 on sale now and run maybe 500 rms to it from the mono amp at 2 or 1 ohm depending on sub u get..

 

Why are you suggesting subs when he has some already??


97 4 dr. Tahoe

Interstate battery

Alpine 9835

Polk Audio MM6501 comps

Wolfram amps coming soon, 3000.1, 125.4

2 Sundown Audio X 15's Tuned @ 30Hz.

Knukonceptz/Royal Excelene wiring

Share this post


Link to post
Share on other sites
Why are you suggesting subs when he has some already??

 

he said i'm thinking about getting these..... not that he has them.. why don't u worry about reading op post instead of mine?


KENWOOD X301 HU, PRECISION POWER Phantom 1000, FU 750 12, 2.1cfad ported, soundqubed 6.5" coax/doors, hp & lp xover on hu, AGM starting batt...

Boomin_tahoe said:
2 ohms rule

Share this post


Link to post
Share on other sites

Thanks for your answers, at the moment I can not add another amplifier, so it would be more advisable to leave the speakers and add only a subwoofer in bridge mode? what dou you recommend?

Share this post


Link to post
Share on other sites
Thanks for your answers, at the moment I can not add another amplifier, so it would be more advisable to leave the speakers and add only a subwoofer in bridge mode? what dou you recommend?

 

Post#4 is the perfect answer for ya.

 

I would get a single DVC then use the channels 3& 4 from amp to power it.


97 4 dr. Tahoe

Interstate battery

Alpine 9835

Polk Audio MM6501 comps

Wolfram amps coming soon, 3000.1, 125.4

2 Sundown Audio X 15's Tuned @ 30Hz.

Knukonceptz/Royal Excelene wiring

Share this post


Link to post
Share on other sites

I do not understand the diagram very well, but I will review it and put it to the test, thanks for your help.

Share this post


Link to post
Share on other sites
I do not understand the diagram very well, but I will review it and put it to the test, thanks for your help.

 

It's very easy...I can break it down for ya. Say You have a DVC sub. You wanna wire it to achieve a certain ohm load. Simply take a piece of speaker wire and connect it to the - of one terminal and either - or + to the other. Same with the other coil terminal. Then take speaker wire and wire it to the sub, doesn't matter which side, then to amp.


97 4 dr. Tahoe

Interstate battery

Alpine 9835

Polk Audio MM6501 comps

Wolfram amps coming soon, 3000.1, 125.4

2 Sundown Audio X 15's Tuned @ 30Hz.

Knukonceptz/Royal Excelene wiring

Share this post


Link to post
Share on other sites

Sorry friend, is that my English is not very good, I understand then that if you can do what I need? Making the connection as you just explained it would be working at 2 ohms? Could I connect both subwoofers and keep my other two speakers?

Share this post


Link to post
Share on other sites

If those subs don't exceed the amps' ohm ratings.


97 4 dr. Tahoe

Interstate battery

Alpine 9835

Polk Audio MM6501 comps

Wolfram amps coming soon, 3000.1, 125.4

2 Sundown Audio X 15's Tuned @ 30Hz.

Knukonceptz/Royal Excelene wiring

Share this post


Link to post
Share on other sites

I agree with the suggestion of going with a single sub instead of a pair.

You have ~200w rms available which is a good amount of power for a lot of low/mid level subs. And the extra work/cost/space requirement to get a pair of subs up and running wouldn't be worth it.

 

Since bridging two channels needs a 4 ohm load to work best you want a sub with either a single 4 ohm voice coil or dual 2 ohm voice coil.

https://www.sonicelectronix.com/item_98697_JBL-S2-1224-Toggle-between-2-Ohm-4-Ohm-Impedance.html

https://www.sonicelectronix.com/item_133899_Polk-Audio-DB1242SVC-DB1242SVC.html

https://www.sonicelectronix.com/item_34856_Rockford-Fosgate-Punch-P2D2-12.html

https://www.sonicelectronix.com/item_126775_DC-Audio-Level-1-12-m4-D2.html

 

many other options.


'04 Chrysler Town & Country (it was cheap and I have a family)

  • HU: Stock - Scosche SLC-4
  • Comps: Lanzar Opti6c w/Opti400x4d
  • Rear fill: Stock
  • Sub: Lanzar Opti1232D 3cf 29hz w/Zed Opti1000.1d

Share this post


Link to post
Share on other sites

Create a free account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's free & easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

×