Is it better to.....

[oilcanracer]

going to a single sub woofer. if i joined the left and right channels from the source, is better to go.....

source, crossover, amp, speaker.

or...
source, amp, crossover, speaker.



that would entail different kinds of crossovers i understand.

[davygrvy]

Electronic cross overs are preferred for at least three reasons off-hand.

1) parts are less expensive. Try pricing the cost of a single 10uF/200V polyester cap!

2) digital domain allows for features you just can't get in passive networks like time delay to match physical offset.

3) efficiency. total sound output is greater, as there are less losses.

Behringer DCX2496
DBX DriveRack PA+

[oilcanracer]

right thanks for clarifying that. active crossovers are going to be more efficient than passive ones.

i was wondering about combining the left and right signals before the amp or after it. which would be a better idea.

most sub notes are mono, but what if there are ones that are not. will positive or minus be sent the wrong way somewhere?

[davygrvy]

before the amp. So you'll have three outputs. two for left and right above 90 Hz with one output for the sub of the mono L+R mix below 90 Hz (or so).

[Moondog55]

Dave can you post the buying site for those recycled electrons?/ I have been looking all over and can only find new ones here.
Tell me do the recycled ones last as long as the new ones or do I have to make an allowance and buy a few extra?/

[littlemike]

Depends on where you get em, some can be pretty wore out by the time they've been through the interweb a few times. I hear Davy's got a good source though...

[davygrvy]

According Boltzmann's constant, proved by Max Planck around 1900, the energy of an electron is dependent on its temperature. Just heat them up a bit to restore them to like new condition.

Make sure to use pure silver wire (about 10 lbs per foot) in a pure radon environment not greater than 2 atmospheres of pressure for the effect to stabilize the particles. I heat my radon to 295.15 degrees Kelvin. Think of it as a vulcanization process.

Did you know that a petabyte of data weighs 2.89 grams?

I'm so FOS

[jbell]

Originally Posted by davygrvy

I heat my radon to 295.15 degrees Kelvin. Think of it as a vulcanization process....I'm so FOS

Live long and prosper dave....

[bentoronto]

Originally Posted by davygrvy

before the amp. So you'll have three outputs. two for left and right above 90 Hz with one output for the sub of the mono L+R mix below 90 Hz (or so).

I've been living happily with mixed-bass and a 140 Hz (18 dB/8ave) electronic cross-over since 1968. At 90 Hz, you aren't keeping much bass out of the mid-range drivers.

Long ago at Bell Labs, I had a buddy who used full-range Klischorns but added a mixed-bass below 40 Hz. Then he built a house with a room suitable for playing his system in.

[davygrvy]

I thought we were talking about subwoofers? ala adding a sub to an existing full range system. I have good results with 90Hz. That way I can't localize were the box is in the soundstage.