strapped amps

[1970cuda 10+ year member]

i have two dd m3a strapped together on two dual 2 ohm voice coils. the 2ohm coils are wired parallel

to give 1ohm per sub and both subs are wired parallel to give a final load of 1/2 ohm. does this mean my amps are at 1/2 ohm strapped ? in the dd manual it says not to bring speaker impedance below

2 ohms when amps are strapped.

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[97maxima 10+ year member]

i think you answered your own question

 

[mylows10 5,000+ posts]

i have two dd m3a strapped together on two dual 2 ohm voice coils. the 2ohm coils are wired parallelto give 1ohm per sub and both subs are wired parallel to give a final load of 1/2 ohm. does this mean my amps are at 1/2 ohm strapped ? in the dd manual it says not to bring speaker impedance below

2 ohms when amps are strapped.

yes

 

[quackhead 10+ year member]

i have two dd m3a strapped together on two dual 2 ohm voice coils. the 2ohm coils are wired parallelto give 1ohm per sub and both subs are wired parallel to give a final load of 1/2 ohm. does this mean my amps are at 1/2 ohm strapped ? in the dd manual it says not to bring speaker impedance below

2 ohms when amps are strapped.

the reason they recommend a minimum 2ohm load when strapped is because each amp sees 1 ohm....if you are at .5 ohm strapped, each amp is operating at .25 ohm....good luck.

 

[1970cuda 10+ year member]

so im at 2 ohms strapped?

 

[Jerhemy 10+ year member]

you WANT 2 ohms strapped. I do not believe that's what you have atm.

 

[quackhead 10+ year member]

so im at 2 ohms strapped?

you are at 1/2 ohm strapped....I don't know how long the DD will do that as far as a daily set-up, you should wire each sub's coils in series and then wire both subs parallel for a 2 ohm final impedance on the strapped pair.

 

[bhsdriller 10+ year member]

yeah, .5 strapped is pretty low. Might be ok for burps, but daily I wouldn't recommend it. Have seen .7 strapped daily in a few installs without problems

 

[Villeza1 10+ year member]

so im at 2 ohms strapped?

Please re-read post #4 .

 

[1970cuda 10+ year member]

sorry, i posted before reading thread. i know that by strapping two amps together they act as one large amp but

i thought that by running the current from the subs, through one amp, through another amp, and back to the subs

would raise the impedance. if my amps are at .25 ohm each then shouldnt my 250 amp fuses have been fried long ago.

 

[bhsdriller 10+ year member]

what do you mean raise it?....like wired at 2 instead of .5?

 

[1970cuda 10+ year member]

yeah, .5 strapped is pretty low. Might be ok for burps, but daily I wouldn't recommend it. Have seen .7 strapped daily in a few installs without problems

this has been my daily driver for five months with no problems. i only take the amps

into clipping(via the dd bass knob) for some demos

 

[bhsdriller 10+ year member]

If it works, it works....keep playing as is

 

[Villeza1 10+ year member]

this has been my daily driver for five months with no problems. i only take the amps into clipping(via the dd bass knob) for some demos

That doesn't sound right at all. .25 ohms is really low for daily, unless your imp rise is like 4x. Have you clamped to see output power and imp rise?

 

[1970cuda 10+ year member]

what do you mean raise it?....like wired at 2 instead of .5?

yeah , i thought since the amps were wired together with the signal similar to series

that it would increase the final load to each amp