FE206eN and Alpha 15 in OB?

[Scottmoose]

On the basis that if enough is sufficient then too much is just right, then I'd agree. That said, based on the average spec. for the 206eNs, 2 Alpha 15s should do an acceptable job on the aforementioned baffle with a 2nd order:

[aquapiranha]

Originally posted by planet10


No. Just that if you want a passivce XO, and no resistor or L-Pad on the 206 you'd need 4 15s.

dave

Thanks Dave, I would prefer not to interfere with the 206 tbh.

Originally posted by Scottmoose
On the basis that if enough is sufficient then too much is just right, then I'd agree. That said, based on the average spec. for the 206eNs, 2 Alpha 15s should do an acceptable job on the aforementioned baffle with a 2nd order:

I will keep an eye out for another pair of 15's, and look into how to wire them "2nd order"

Many thanks guys, you two have always been helpful.

Steve

[planet10]

Originally posted by aquapiranha
I would prefer not to interfere with the 206 tbh.

You are going yo over excurse it if you don't have some sort of high pass on it... least innocuous is a PLLXO built-into the amp (using appropriate coupling caps if possible)

dave

[aquapiranha]

Originally posted by planet10


You are going yo over excurse it if you don't have some sort of high pass on it... least innocuous is a PLLXO built-into the amp (using appropriate coupling caps if possible)

dave

Sorry Dave I am a noob and have no idea what that means. I was planning on driving the fostexs with my decware zen, and the bass drivers with maybe a chip amp. I know the bass will need some form filter.

[rjbond3rd]

Hey, I am also a newb.

* Over-excurse == cone travels too far, past the 1mm or so maximum excursion (xmax) that it's designed for. By putting the signal through a high-pass filter before it hits the FE206E, the Fostex will not bother trying to play those bass frequencies, and will more likely stay within its xmax unless you really crank it.

* PLLXO == passive line-level cross over, e.g. a circuit between the preamp and the (two) power amps, as opposed to having the circuit at the speaker's input terminals (after the power amp). I would assume the goal is to make the most of a low-powered amp's precious wattage?

You can also use (a) an ordinary crossover circuit, or (b) an active crossover, e.g. a rackmount pro audio device, or (c) in a pinch, cobble together whatever you have, e.g. there are ways to fake a crossover with a mixing board.

[planet10]

Originally posted by aquapiranha



Sorry Dave I am a noob and have no idea what that means. I was planning on driving the fostexs with my decware zen, and the bass drivers with maybe a chip amp. I know the bass will need some form filter.

With a decware Zen you can achieve a 2nd order filter by changing the coupling caps to an appropriately smaller one and by adding a single cap (per channel) on the input.

dave

[rjbond3rd]

Dave, pardon my ignorance but could you explain how the signal is split at the source to feed the two amps, e.g., the Zen for the Fostex and another amp for the Alphas?

[aquapiranha]

Originally posted by planet10


With a decware Zen you can achieve a 2nd order filter by changing the coupling caps to an appropriately smaller one and by adding a single cap (per channel) on the input.

dave

Hi Dave, i would rather not modify the Decware, so I assume I would need a filter on the 206 instead. I will check out options on the filter. there is another option of course, and that is to go active with a Behringer / DBx and a couple of amps.

Steve

[planet10]

Originally posted by aquapiranha
i would rather not modify the Decware, so I assume I would need a filter on the 206 instead. I will check out options on the filter. there is another option of course, and that is to go active with a Behringer / DBx and a couple of amps.

Steve

It just means you need to move the PLLXO in front of the Zen. You are already looking at a couple amps if you are considering a PLLXO.

http://www.t-linespeakers.org/tech/f...ssiveHLxo.html

dave

[aquapiranha]

Thanks again Dave. i have had a think and may want to use a plate / sub amp for the bass (which of course would have level /slope etc controls) and the Decware in front of the 206's. I will read the link you sent, it is about time I learnt!

Many thanks Dave.

Steve