Feedback: Fr125S & 2xExtremis6.8

[Theli]

I have an idea that uses a CSS FR125S in a 7ltr sealed box and two Extremis 6.8 in series vented and tuned to ~25 to 30hz, 35ltr box.

They will be crossed at ~250hz (2nd order on FR125 and 1st on extremis).

I may add a super tweeter later on if necessary. This is for movies and music useage...oh and I like what would be considered Heavy Metal mostly (plus a some other definitely non-metal type of music, but you didn't hear that from me)

Any thoughts, suggestions for myself? I have the drivers, just would like to do something different with them.

[planet10]

Sure that will woek.

My mains are similar idea (Fonken+2 SDX7eN per side). I XO at 100 Hz axtive.

I would suggest active XO, even if you push the XO up as high as you are considering.

dave

[Theli]

So how low would/could you go with the FR125?

I thought about active, but that's more money again I may do that later on.

The basic idea with this design is to have something new/different but without spending too much extra money.

[planet10]

Originally posted by Theli
So how low would/could you go with the FR125?

I thought about active, but that's more money again I may do that later on.

The basic idea with this design is to have something new/different but without spending too much extra money.

RAW typically XOs at 125 Hz,,, if you are fast on your feet an active XO can actually be cheaper, and has a likelyhood of sounding better.

dave

[Theli]

Originally posted by planet10


.....if you are fast on your feet ....

dave

I'm not sure I follow your meaning....

To actively crossover I'd need to bi-amp, no? That now requires two amps plus a pre-amp and the active crossover. Not exactly what I had in mind with cheap

[planet10]

Indeed, but if you can add pre-out, power-in on your integrated/receiver, pick up a 2nd hand almost anything (or build a chipamp), and use a PLLXO (or integrate a low pass into the chip-amp), you can come out pretty cheap. From close to free to as much money as you want to spend (a good junk box of parts helps)

dave

[Theli]

Originally posted by planet10
Indeed, but if you can add pre-out, power-in on your integrated/receiver, pick up a 2nd hand almost anything (or build a chipamp), and use a PLLXO (or integrate a low pass into the chip-amp), you can come out pretty cheap. From close to free to as much money as you want to spend (a good junk box of parts helps)

dave

Ok, I see where your coming from. I'll have to do some reading and figure out pros/cons to each approach and the associated costs. Saskatchewan is not the best place for DIY shopping sometimes.

thanks for your input.

[planet10]

Originally posted by Theli
Saskatchewan is not the best place for DIY shopping sometimes.

Contact Illusus... he might have something suitable kicking around...

dave

[Theli]

Thanks, I'll look him up.