DLS A3 - If Bridged, how many OHM's?

[db_bloke]

Hi, new here...

If I buy a DLS A3 amp (spec says 1200w bridged into 1 ohm) then am I correct in assuming that the lowest OHM speaker I should buy is a 4 Ohm Dual voice coil.

From what I can tell, there is something other than ohms law that says if you parallel a 4 ohm dvc sub (which makes it 2 OHM's) and connect to a bridged stereo amp, this 2 ohms is seen as 1 ohm by the amp.

So My ultimate question is ...

If I buy a DLS A3 and a diamond audio D912D4 (dual 4 ohm) and wire in parallel, the amp will see it as 1 ohm and it will be feeding it 1200 watts rather than seeing it as 2 ohms and feeding it 870 watts?

Otherwise if I'm wrong then I should think of buying a D912D2 (dual 2 ohm).

TIA,

Peter.

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[FoxPro5 5,000+ posts]

You want the dual 2 ohm sub. Parallel wiring reduces resistance. That is a bad *** amp man, nice choice.

 

[thch 10+ year member]

the whole "bridged sees half" thing is most revelent if you are building an amp.

ohms law: V = I R

bridging -- the voltage across the speaker doubles. therefore the current doubles.

each amp now provides 1x voltage and 2x current to the speaker -- thus each of the 2 channels of the bridged amps sees a load of 1/2 of the actual load.

but clearly the speaker's impedance has not actually changed.

in the end, if the amp can handel a 2ohm bridged load, then it can handel 2 1ohm stereo loads as well. just wire up the speakers. if the amp is rates in the correct mode {bridged, stereo} for the impedance you have wired up, then you will be fine.

as for your question -- a single dual 4ohm will give a 2ohm load. in bridged mode this is listed as 870W. if you had 2 dual 4ohm woofers, you would get the full 1200W, 600 to each.

if you get a single dual2 you also get teh full 1200W.

 

[alphakenny1 10+ year member]

i believe the dls a3 can be run at 1 ohm so i'd get the dual 2 ohm to get the most power.

 

[Colin+M 10+ year member]

1200 watts @ 1 ohm in fact.

I can't decide if I want the A3 or 2500xxk??? Decisions Decisions

 

[db_bloke]

Thanks for all your replies. I think basically you are saying get a dual 2 ohm sub.

I am just a bit concerned about swedish - english translation on the website, because looking at their wiring page you find this link.

Showing:

Has anyone actually wired a 2ohm dual coil sub up to one of these? It says impedance = 2ohm, amplifier load = 1ohm (thus making me thing I need the 4ohm DVC to get 1200w and not dual 2 ohm which might shut the amp down as it sees the load as 0.5 ohm).

I've heard an 2500xxk, I thought it was an amp you could never tire of, I can even get one at less than cost price due to distributor shutting down. The A3 have interestng components / wiring options / finish in comparison. I read somewhere that there is a new ARC Audio range just out. Also is the new Audison LRX 1.1k in the same league, or whilst talking my choices, is an lrx 4.1k up there with the dls a4 of 2*focal fp2.150, probably time to start another thread. //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif

 

[Justintoxicated 10+ year member]

Thanks for all your replies. I think basically you are saying get a dual 2 ohm sub.
I am just a bit concerned about swedish - english translation on the website, because looking at their wiring page you find this link.

Showing:

Has anyone actually wired a 2ohm dual coil sub up to one of these? It says impedance = 2ohm, amplifier load = 1ohm (thus making me thing I need the 4ohm DVC to get 1200w and not dual 2 ohm which might shut the amp down as it sees the load as 0.5 ohm).

I've heard an 2500xxk, I thought it was an amp you could never tire of, I can even get one at less than cost price due to distributor shutting down. The A3 have interestng components / wiring options / finish in comparison. I read somewhere that there is a new ARC Audio range just out. Also is the new Audison LRX 1.1k in the same league, or whilst talking my choices, is an lrx 4.1k up there with the dls a4 of 2*focal fp2.150, probably time to start another thread. //content.invisioncic.com/y282845/emoticons/uhoh.gif.c07307dd22ee7e63e22fc8e9c614d1fd.gif

I'm pretty sure you are correct you want a 2 Ohm load in bridged mode, the translation is off, the A3 makes it's power at 2 ohms due to having 2 channels (each stable at 1 ohm), The A6 is what you want if you plan to run a 1 ohm load. A6 is alot cheaper as well //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

If you want to get rid of that A3 send it my way I think it would be an excelent amp for my component fronts //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

I went through the same shit when selecting a DLS amp but endedup not getting one //content.invisioncic.com/y282845/emoticons/frown.gif.a3531fa0534503350665a1e957861287.gif it is a bit large for my truck..

Hell Iw as thinking to get an A3 for my fronts and A6 for my subs... And run them both @ 4 ohms lol