What to do with a handful of LM3875's-Bridged, parallel, bi-amp etc?

[Dr.H]

I have built a NIGC using just 2 LM3875's, but I have a couple more (about 6) which have not been out to work. What is the optimal way to use these devices?-

Another set of amps to feed the tweeters seperately?

What about bridged or paralleled? How does the sound quality of these compare with the single LM3875 implementation?

Thanks for any ideas.
Ryan

 

[carlosfm]

You have 6?
I would sudgest you keep your current amp for treble and make another one with 3 // LM3875s per channel for bass.

 

[grataku]

I got a 30 yd. dumpster parked in my driveway....

 

[carlosfm]

I got a 30 yd. dumpster parked in my driveway....

Your post is very helpful, thanks for the hint.
With posts like this, we're going far...🙄

 

[karma]

optimal way to use these devices?- yes mail them to me😀

 

[dab]

re: I got a 30 yd. dumpster parked in my driveway....

"I got a 30 yd. dumpster parked in my driveway...."

may i dive in your dumpster?

 

[Dr.H]

Thanks Carlosfm

And what configuration do you or anyone else suggest-bridged? Parallel?

 

[carlosfm]

Ryan, you have 6 chips to make an amp, right?
You have some choices here.
Or do as I said above, or make a new amp that replaces your current one.

For a new amp:

2 // LM3875 per channel for bass.
1 LM3875 per channel for treble.

I wouldn't make a bridge amp, as most speakers these days are not 8 ohms, and even the ones that they say it is, have impedance dips well below 8 ohms, sometimes below 4 ohms.
Bridge-parallel yes, but you would need 8 chips (4 per channel).

I give more importance to current ability than to power, so if you ask me if bridge or parallel with two chips, anyday, anytime, parallel.😉