2, possibly 3 ways around the Fostex FD600

[rdalem]

Hello,

i‘ve had them on Jabo KH-53 horns about 10 years ago. The Fd600 are very nice speakers and can be crossed at 800hz.
This speakers powered with se tube amps were extrem fun to hear.

Greets Hannes





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This was interesting. I have the Jabo KH 55 on my Onken 360 setup.

 

[Hannes 1977]

Look‘s like a lot of fun speakers 👍

 

[rdalem]

It has a significantly finer curve on it. Seas A26 is probably, as you suggest, a better choice.

 

[rdalem]

This will be a better solution. A bit of a challenge with the type of horn. Won't lose the benefits of some size on the horn. Maybe Tractrix 350 or JMLC 600? Although these will also be large.

 

[Hannes 1977]

When you go 2 way then go for the jmlc, the tractrix is much deeper and will beam like hell.

 

[rdalem]

Not too big a difference between 70 liters and 50 liters on the Seas A26;

 

[rdalem]

I will probably need a sub to fill out the lowest register with this configuration. Although the Seas A26 has 35 hz Fs, I don't see this going low in a 70 liter. I have to be open to other drivers as well.

 

[planet10]

F10 in the low 20s. That will be close to flat (ignoring room modes) in a typical room.

That is lower than many “subwoofers".

dave

 

[rdalem]

Which curve is applicable. A bit confusing with so many curves without explanation.

 

[planet10]

I see you don’t understand sealed. As the box gets smaller the Q goes up. So the smallest box has the biggest bump and won’t reach as low.

Typically one aims at max-flat (Q=0.707) but in a room with lots of gain a lower Q can play well.

Have a good look at the entire A26 ReViz to get a good idea of loading the A26.

https://frugal-phile.com/boxlib/A26-ReViz-0v90-080323.pdf

dave

 

[Arez]

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[profiguy]

What about considering the Eminence B102? Its alot more efficient and can go into the low 40s with the right enclosure. I've built a 2 way with this and a Morel CAT378. It turned out really nice.

 

[rdalem]

@profiguy This has a nice sensitivity, but I think it will struggle in the lower Hz. Was hoping not to have too big a cabinet 🤪