running 1 VC on a DVC sub?

[pr5owner]

is it bad for the coil to run only 1 of the 2 VC for a DVC sub?

 

[Poseur]

YES very. do not do it...

 

[byohndspeed]

only if you want to keep using it..

 

[pr5owner]

why? also if there is an 8ohm sub will it get approx the same power as a 4ohm on the same amp? i heard somewhere that amps can provide almost the same power to an 8 as a 4

 

[shinzen]

ok, as has been mentioned, DO NOT DO THAT!! Especially if you like your sub. When ever you increase the resistance to the amplifier, you will decrease the output, conversely, if you decrease resistance, you will increase power. Typically, a decent sub amp will run just fine at 1 or 2 ohms, and you will have more output. If you have a 4 ohm DVC, just run the VC's in parallel to reduce your ohm load on the amp.

 

[DZnutz]

why does adire audio let you run the brahma with just one voice coil then?

 

[cthomp21]

You can do it. However, power handling will be drastically reduced because (1) you're only running one coil and power ratings usually sum both coils, and (2) the unused coil acts as a brake so your sub will approach its thermal limits rather quickly.

You should note that running a single coil can drastically change its T/S parameters. It might sound great in a certain box when running both coils but sound terrible when only using one coil. If you're using a sealed box, this probably won't be a problem as they're a lot more forgiving. But, ported and especially bandpass boxes can be a problem.

One fun aspect of running a single coil is tuning. You can use a variable potentiometer (sp?) to change the sub's T/S parameters to your liking. This can be useful if you want to tune a high Xmax sub for a free-air install by raising its Qts.

In any case, I'm sure there's always exceptions. There may be some subs out there which may react very negatively to running a single voice coil.... Sizzle....

 

[got wake?]

You can do it. However, power handling will be drastically reduced because (1) you're only running one coil and power ratings usually sum both coils, and (2) the unused coil acts as a brake so your sub will approach its thermal limits rather quickly.

You should note that running a single coil can drastically change its T/S parameters. It might sound great in a certain box when running both coils but sound terrible when only using one coil. If you're using a sealed box, this probably won't be a problem as they're a lot more forgiving. But, ported and especially bandpass boxes can be a problem.

One fun aspect of running a single coil is tuning. You can use a variable potentiometer (sp?) to change the sub's T/S parameters to your liking. This can be useful if you want to tune a high Xmax sub for a free-air install by raising its Qts.

In any case, I'm sure there's always exceptions. There may be some subs out there which may react very negatively to running a single voice coil.... Sizzle....

^^^ first correct answer thanks for saving me all that typing you did forget to add that you should short out the other VC to keep the paramaters as close to the same as running both VC's as possible.

 

[servoeyes]

^^^ first correct answer thanks for saving me all that typing you did forget to add that you should short out the other VC to keep the paramaters as close to the same as running both VC's as possible.

How do you short it out, Wake?

 

[got wake?]

How do you short it out, Wake?

with a really short piece of speaker wire just connect the positive to the negative on the unused VC only.

 

[cthomp21]

^^^ first correct answer thanks for saving me all that typing you did forget to add that you should short out the other VC to keep the paramaters as close to the same as running both VC's as possible.

Doh! Forgot about that!