Audax AM130 how low can cross

[rinx]

Hei all!
And have an nice and sunny monday morning from Estonia
I have a simple question, just bulding 3way, woofers on side (so need to cross low- 150-250).
Midranges will be Audax AM130, here:http://www.hautparleur.fr/_audax/am130z2.jpg

could you suggest me, how low can I cross those maximum?!

[Inductor]

It depends.
But the way you are asking, they are calling for 150/200Hz to about 1K5/2K (2nd order?). 60Hz looks like they play on the safe side but might not be enough like a 40/50Hz resonance (driver) if you want to go low with a 1st order or similar. The design of the xover also is important for the tweeter in this case because of capacitance/inductance reactions on a 3 way. Are you using two (sub) woofers? They can also help with the baffle step compensation.

[Thawach]

hi rinx

how low can I cross those maximum?!

I have a simple answer. i think u design sub-sat is better because u cross xo point very low. u may cross the xo about 80-100 hz. for the low frequency./

[rinx]

Hei guys!
Yes I am ginna do 2 woofers 8".
What I was wondering, that does Audax plays in safe area, if I am crossing around 150-250.
I will use also 2 Audax, s its WWMTM system.
Sounds good.

Btw..I was testing tweeters for AM130, I have Seas 27TFFC and this new Peerless 810921. I used both without any crossover, just put them together and listened sound.
Peerless surely sounds better. Seas does had some areas where it wasnt enought clean...so what I mean, can I test drivers like that, just listening?! Each driver has his "own" sound...like persons have "aroma"

[Inductor]

Originally posted by Thawach

...u may cross the xo about 80-100 hz. for the low frequency./

Not for a classic 3-way though, resonance of the Audax is about 60Hz.

[Inductor]

Originally posted by rinx
Btw..I was testing tweeters for AM130, I have Seas 27TFFC and this new Peerless 810921. I used both without any crossover, just put them together and listened sound.
...so what I mean, can I test drivers like that, just listening?! Each driver has his "own" sound...like persons have "aroma"

No... or the only "aroma" you will have is that of blown expensive tweeters . Use a small bypolar cap instead, like for a first order xover.

The two woofers (8") should not be far away if used in BSC helping in the midrange region. They should be under and close (in vertical alignment) to the main speakers for better stereo imaging. You can put your sub (woofers) wherever you want if used with a high order xover lower than 100/200Hz. Look at the "Modulus" that was posted before in a different thread for aesthetics combination with function.
http://www.humblehomemadehifi.com/Modulus.html
Look also at Thawach idea. I don't know what she has in mind.

[Inductor]

Originally posted by rinx
I have Seas 27TFFC and this new Peerless 810921.

Do you have both? Then again, if you want to play on the safe side use the HDS. The Seas will need a 3.order xover with your midrange main driver, because of it's 1200Hz resonance (H0831), if not blown allready.

[rinx]

Well i know tweeters are sensitive to power, but I used really low power, so they are really OK. Otherwise it is really easy to hurt them...

So, you suggest me to if enclosure is 1,45m tall to move woofers from bottom to center of the side. Idea is that all music is coming from one area?!

[Inductor]

Originally posted by rinx
So, you suggest me to if enclosure is 1,45m tall to move woofers from bottom to center of the side.

If woofers on the side of the enclosure then you need an high order xover (as I said before).

If they are mounted in the front baffle (in vertical alignment) they can go to 1K helping with BSC (if you cross them at <200/300Hz) with a low order xover. The Audax then will be at full power instead of having attenuation from the BSC in the first case, that you are saying is your objective (?), of mounting them "of the side".

Let's say, after having your opinion, that (you have) better speakers with them mounted in the front baffle than in a "sub" fashion. If you have a model (or idea?) we can look at it.

If you don't want to compromise any of the ideas right now and you have to wait for the xover to be developed accordingly, (but) you can GO ON and match the Audax+HDS (for now).

[rinx]

Inductor:good suggestions. I am gonna do high order for woofer. But please explaine me why I should do it.

For HDS and Audax I thought to do 4th for HDS and 2nd Audax.?!