Impedance of Speaker+Tweeter via NP-cap

[kroto]

i've been searching, but did'nt find any similar thread.

I'm a bit confused with this config(on the attachment file), what is the impedance if Woofer // tweeter via NP-Cap?
advise please?

best regards.

[dave slagle]

4 ohms at HF, 8 ohms at LF and a transition between the 2 at the X-over point.

dave

[woody]

I would just call it 8ohms Yes the impedence of the woffer and the tweeter will be
in // at high frequencies but at high frequencys the woffer impedience will be so high
that the combined impedience won't be much below 8 ohms.

[planet10]

Originally Posted by woody

I would just call it 8ohms Yes the impedence of the woffer and the tweeter will be in // at high frequencies but at high frequencys the woffer impedience will be so high hat the combined impedience won't be much below 8 ohms.

What woody says is usually the case, but there are some FRs (FF85, FE206, many of the Mark Audio) that have pretty flat impedance above resonance.



FRs with this kind of impedance typically don't need a tweeter.

dave

dave

[kroto]

Originally Posted by dave slagle

4 ohms at HF, 8 ohms at LF and a transition between the 2 at the X-over point.

dave

it seems like 10u and RL2 form as HPF (1/2.p.RL2.10u), so the Xover is at ~2kHz?