How To Add Rear Tweeters to System?

[fastcat95]

Hello to All:

I am toying with the idea of adding rear tweeters to
my speakers (2-way 6.5"/.75" TL, nominal 6-8 ohm) to
try and improve depth & spaciousness, and have some
general questions for anyone who has ideas:

1. Where to cross over (frequency) the rear units?
2. Firing straight back, or up at an angle?
3. Wide or narrow directivity pattern?
4. Wired out of phase with front tweeters?
5. Any problems connecting them in parallel with main
speaker system at amplifier (B&K ST-140 MOSFET)?

Many Thanks in Advance!

Fastcat

[Salas]

Originally posted by fastcat95
Hello to All:

I am toying with the idea of adding rear tweeters to
my speakers (2-way 6.5"/.75" TL, nominal 6-8 ohm) to
try and improve depth & spaciousness, and have some
general questions for anyone who has ideas:

1. Where to cross over (frequency) the rear units?
2. Firing straight back, or up at an angle?
3. Wide or narrow directivity pattern?
4. Wired out of phase with front tweeters?
5. Any problems connecting them in parallel with main
speaker system at amplifier (B&K ST-140 MOSFET)?

Many Thanks in Advance!

Fastcat

1. 7kHz, play with level.
2. Up at an angle.
3. Wide.
4. In same polarity.
5. Lessens impedance at HF, no problem with solid state both for 4 & 8 Ohm speakers (see published two last octave Z). For valves avoid on 4 Ohm speakers.