21216's 39 ea BIN

[Altec Best]

I can't remember which thread, but i asked about this not too long ago and AB posted a great pic of a naked 1285 XO. Hopefully, he'll see this and know just what to do.

The 288s are amazing, but they are very hot. I have to keep the attenuation knob almost off on my A6s to tame them. It might work in an outdoor environment or a big auditorium where the extra HF might be needed to cut through the ambient noise, but that's not the case in my LR.

I should try increasing the crossover freq. too. Maybe running them at 800 or 1200 will take something off and give the 3156s a chance to catch up.

The problem is the 288's are a lot more efficient so that is why they play a lot louder than the woofers.. You can try a 30904/30923 attenuator board... I have both the 30923 and the 30904 that i just got recently. They are used for matching less efficient woofers to higher efficiency Compression drivers.


Altec 1285-8B Crossovers by Altec Best, on Flickr


Altec 1285-8B Crossovers by Altec Best, on Flickr


Altec 30923 Attenuators by Altec Best, on Flickr


HPIM3065 by Altec Best, on Flickr


HPIM3066 by Altec Best, on Flickr


Altec3090430923 by Art J., on Flickr