Help on Altec N501-8b

[sbjacob]

I couldn't find a schematic for this or any other info.What drivers were used with this crossover ?

[sbjacob]

I couldn't find a schematic for this or any other info.What drivers were used with this crossover ?

Anyone?

[Goodwill_HiFi]

A better question would probably be what systems used it. Then go from there. Having said that..... I don't know.

[sbjacob]

A better question would probably be what systems used it. Then go from there. Having said that..... I don't know.

I purchased one of these crossovers to use on my DIY project so I don't know the model that this crossover was used in. Thanks

[Earl K]

,,,,snip,,,, so I don't know the model that this crossover was used in. Thanks

- It was used with the A7-500-8E system, consisting of a 828E cabinet / 902-8T on a 511b horn / & 416-8C for a woofer .
- This info was findable in the LHF library ( even though it's not searchable using the sites' search-engine ) .


- As far as the N501-8b schematic, I really doubt that it's anything more than an updated version ( ie; cheapened enclosure ) of the N501-8A whose schematic can be found over at Altec Pro ( use Google ) .

- You've got one, open it up , compare its' cap values to those of the N501-8a, & post the results so the rest of us can learn something from your thread .

>< cheers

[sbjacob]

- It was used with the A7-500-8E system, consisting of a 828E cabinet / 902-8T on a 511b horn / & 416-8C for a woofer .
- This info was findable in the LHF library ( even though it's not searchable using the sites' search-engine ) .


- As far as the N501-8b schematic, I really doubt that it's anything more than an updated version ( ie; cheapened enclosure ) of the N501-8A whose schematic can be found over at Altec Pro ( use Google ) .

- You've got one, open it up , compare its' cap values to those of the N501-8a, & post the results so the rest of us can learn something from your thread .

>< cheers

I will post photos and cap and inductor values . Thanks much

[Russellc]

- It was used with the A7-500-8E system, consisting of a 828E cabinet / 902-8T on a 511b horn / & 416-8C for a woofer .
- This info was findable in the LHF library ( even though it's not searchable using the sites' search-engine ) .


- As far as the N501-8b schematic, I really doubt that it's anything more than an updated version ( ie; cheapened enclosure ) of the N501-8A whose schematic can be found over at Altec Pro ( use Google ) .

- You've got one, open it up , compare its' cap values to those of the N501-8a, & post the results so the rest of us can learn something from your thread .

>< cheers

I have a set of the 501 8b, it came with my 828 cabs, 902 8b and 416 8c.
Dont think its the same as 501 8a, I've seen that schematic, this one has a bizzillion resistors, which I didnt see in the 8a version.

russellc

[Altec Best]

A year late You know what they say better late than never Thanks Earl.

I was just messing with the N501-8A the other day.And why I was looking for some info on them,I was thinking that the 8B was the same until I found this thread.

[Art J.]

Hey Gang, was it finally confirmed that the 8B was a combination
of the 8A and the 30904 as in the preliminary diagram?
I only have an 8A here and the equalizers.

[Earl K]

Hey Gang, was it finally confirmed that the 8B was a combination
of the 8A and the 30904 as in the preliminary diagram?
I only have an 8A here and the equalizers.

That "preliminary schematic was drawn up by "martyh45" . He ( presumably recognized, & ) drew the "HF EQ" circuit into the schematic that he created .

The assumption here was that he had these 8B" crossovers to work from .

He later measured both coils with in the 2.7 mH region ( he even pointed out the part number of the "8B" coil is different than the "8A" version ).

There is a difference in the value of the coils .
- 2.7 mH vs the 3.6 mH of the "A" version .



<> cheers

[Art J.]

Interesting, thanks Earl. The only way I can calculate a 2.7mh coil to work
is if matched with a 21 uf cap, which raises the crossover point to 650hz.
I think the mystery still continues with this one.....................


On the light side, I found this Hi-End crossover circuit on one of my
Ham Radio sites. Its easier to post it here, plus the other site has been
too grumpy lately anyways...........