Tweeter wiring and phase

[presscot]

I've got a pair of DENON SC-C3 from my uncle. It is two ways speaker use 1 woofer and 1 tweeter per cabinet.

I've dismantled the parts to see inside and founded that the tweeters was wired in phase on one and the other was out of phase from the factory.They use 2nd order passive crossover network. So now I can't remember the left or the right tweeter was wired out of phase or mayby I could be mistaken that actually both of Left and right was wired out of phase from the factory . I was very confused .

I need some help. Please give me suggestions about the wiring of tweeters what should I connect them ? Should I wiring them both out of phase ? or only one cabinet out of phase and if wiring only side It should be Left or Right side.

Thank you.

[Inductor]

No, both speakers should be (from my point of view) the same, unless they were not symmetrical (exception).
Phase then (or not), it's the final adjustment in relation of the speakers (drivers) and xover (xover/order) and xover frequency.
(You can test both). Describe or post a picture of xover.

[presscot]

Here are some pictures of xover. It's uncomplicated design using C 3.3uF in series with and 0.47mH Inductor parallel with the tweeter.

[presscot]

red ==> + woofer
black ==> - woofer
orange ==> ? tweeter
white ==> ? tweeter

[presscot]

the wiring diagram which I knew.

red ==> + woofer
black ==> - woofer
orange ==> ? tweeter
white ==> ? tweeter

[scott17]

If the photos you show are the entire crossover, than unless there are some components hidden from view, that is a first order 6dB crossover. One inductor for the woofer and one capacitor fro the tweeter. The woofer and the tweeter should be wired in-phase for both speaker cabinets.

A 2-way speaker using a 2nd order 12dB crossover has the tweeter wired out-of-phase.

Edit: It is difficult to tell from the photos, are those components indeed only connected to the tweeter? Are you sure the inductor is not in series with the woofer and the cap in series with the tweeter?

[tinitus]

probably best with reversed phase on tweeter
but depends
if your xo is made to work without reversed phase, things might get more complicated

note that the reversed connection can be done either at xo, or at tweeter

I'm sure you must be missing some attenuation on tweeter

[presscot]

Originally Posted by scitizen17

If the photos you show are the entire crossover, than unless there are some components hidden from view, that is a first order 6dB crossover. One inductor for the woofer and one capacitor fro the tweeter. The woofer and the tweeter should be wired in-phase for both speaker cabinets.

A 2-way speaker using a 2nd order 12dB crossover has the tweeter wired out-of-phase.

Edit: It is difficult to tell from the photos, are those components indeed only connected to the tweeter? Are you sure the inductor is not in series with the woofer and the cap in series with the tweeter?

No, This crossover is for only tweeter. This is diagram I try to draw it.

[presscot]

It's 4kHz crossover with 6 ohms tweeter.

[scott17]

Originally Posted by presscot

No, This crossover is for only tweeter. This is diagram I try to draw it.

In that case I would wire woofer and the tweeter in-phase. Since there is no crossover on the woofer, there is no phase shift. The tweeter crossover does cause phase shift but the woofer and tweeter will not be 180 degrees out of phase. I built a set of 2-way, 1st order on the woofer, 2nd order on the tweeter, and wired them in-phase.