Altec 1285-8B Crossovers

@Dsauro Hey Dave my crossovers arrived but they came with another external crossover on a small plate also Altec, #391049 was wondering if yours came with those as well.I think they are for the woofer but I'm not sure.

Dose anyone know what they are for ?

Here are some pictures to ponder Thanks !


http://www.hostboard.com/forums/hbmc...2010/10/56.jpg


http://www.hostboard.com/forums/hbmc...2010/10/57.jpg


http://www.hostboard.com/forums/hbmc...2010/10/58.jpg


http://www.hostboard.com/forums/hbmc...2010/10/59.jpg


http://www.hostboard.com/forums/hbmc...2010/10/60.jpg


http://www.hostboard.com/forums/hbmc...2010/10/61.jpg

More Pictures :)


http://www.hostboard.com/forums/hbmc...2010/10/62.jpg


http://www.hostboard.com/forums/hbmc...2010/10/63.jpg



http://www.hostboard.com/forums/hbmc...2010/10/64.jpg


http://www.hostboard.com/forums/hbmc...2010/10/65.jpg


http://www.hostboard.com/forums/hbmc...2010/10/58.jpg

Looks to be a later variation of the 30923 attenuator board. ArtJ hosts that layout;

http://img101.imagevenue.com/img.php...ecn50130923jpg

It's for the HF driver, the basic "flatten the midband to extend the HF" circuit.

Quote:

---

Originally Posted by bfish

Looks to be a later variation of the 30923 attenuator board. ArtJ hosts that layout;

http://img101.imagevenue.com/img.php...ecn50130923jpg

It's for the HF driver, the basic "flatten the midband to extend the HF" circuit.

---

Thanks Brad for the info. Much Appreciated ! :2thumbsup:

You're welcome.

Good ol' Zilch has explored and (ab)used the circuit to some degree. ;) Search his posts for 30923.

Would you mind posting the parts values?

All resistors are 10% , there is two 3.9 ohm and one 6.5 ohm and the one cap is a 6 uF

Quote:

---

Originally Posted by bfish

You're welcome.

Good ol' Zilch has explored and (ab)used the circuit to some degree. ;) Search his posts for 30923.

---

Which forum he seems to be everywhere these days.I seen him on PE Techtalk this morning even. :D

Quote:

---

Originally Posted by Altec Best

All resistors are 10% , there is two 3.9 ohm and one 6.5 ohm and the one cap is a 6 uF

---

Then it IS a 30923 for all intents and purposes. Same values.

Quote:

---

Originally Posted by Altec Best

Which forum he seems to be everywhere these days.I seen him on PE Techtalk this morning even. :D

---

I guess that's one of those "if you weren't in the forest you couldn't hear the tree fall" things. :D

Yeah, Z-man's a forum slut, but he does good work. :)

AK and LHF for the 30923.