Hi, i planning to go fully active for my dynaudio 240GT using the 2 x helix amp.

Do you think if i run fully active it will sound better than i using the dyn passive x-over?

As for the set-up i know that mid-range we need a bandpass the frequency let say 150Hz-1Khz....what abt tweeter ? can i just highpass the frequency let said from 1Khz highpass.....do i need to bandpass the tweeter as well.

Thanks

It'd be possible for them to sound better active but usally you can never get it as good as what the passive x-over can get them. I guess you can always try and go back later on.

i reckon you would bandpass the midbass from 50-2500Hz, and highpass the tweeter at 2500Hz..

you wouldnt wanna go much lower than that on the tweeter or you'll fry it trying to play midrange.. :x

teh midbass can play as low as 50Hz as thats where my 240GT splits are highpassed at..

well, i never try active before....but a few people mention that active is more control and dynamic...

I also wanna know the activecrossover from my amo any good ?I using Helix amp which is made in Germany so i would think the crossover frequency should be accurate...

do u guys used a external active crossover unit to play active ?

With an active set up you can have more control over your speakers as you can tune the mid seperate from the tweet - obviously if you are just going to set the x-overs on the amp w/out any EQing or other processing then you are not really going to have any more control over your speakers than a passive set up...

More "dynamic" is open to interpretation...

Bye,
Mo

I would only go Active on a front stage if you were using horns, or you were runningn dedicated midbass drivers playing up to only 150hz.

To make passive crossovers are low frequencies around 150hz is very hard to do and quite costly.

Active will sound better/worse depending on the speakers you are using.

I originally ran my Focal 165V2 splits active but they sounded even more harsh than they usually do.

However, I reccomend running active if you are using different tweeters/midbass to what your crossove was originally desinged to work with.

Active gives more power, and if done correctly with a good active crossover, it should sound better.

But I dunno if I would put Dyn's active, they sound so warm and detailed passive.

But try it out and see how you like it.

As per above if you have allt he equipemt to try active, then give both a go and decide for yourself.

In answer to your question.

1) No you don't bandpass tweeters. A simple high pass is all that is required.

2) I personally use a external active xover. But I mix and match my drivers hence why passives don't cut it.

i'm in a similar situation to you at the moment. i've got 4 channels and a set of 240s to play with. bridge my phoenix and i get 180/ch into the passive setup (and deal with the increase in distortion in my amp) OR 50w into each driver.

i'm considering setting the suckers up, then:

a) running them 100% passive. bridge my 4 channels into 2. 180watts for each split! mmmmm

or

B) modifying the xovers to be passive, yet bi-wirable/bi-ampable. i.e. separating the inputs for both tweet/mid. 50w each

or (maybe)

c) sorting-out an external eq/xover Rane RPM88 and running active via that (so i can have COMPLETE control over cutoffs, rolloffs and levels to the n'th degree.

i'll let you know my findings (WHEN I REPAIR MY PRANGED CAR :evil: :evil: :evil:)

d

Put a nice 300WRMS into them passive, they will love it and sound awesome!

Mmmm...depending on the amp, 300wrms might be way too much power... even 200wrms might be pushing it IMO

Blue_6006, ask the guys at the shop where we met up some time back about this :wink: (granted, it was a one-off but who knows...)

Bye,
Mo

180 phoenix watts is too much, IMO for dyns. but headroom will be awesome.

i'm thinking, however, 50watts might still work-out as plenty. we'll see.

d

I thought he said that Dyn's can handle that much power, it was just in that situation that it occurred.
My bad!

oh, don't get me wrong, dyns love the power, but, realistically, who'd really want 200watts in daily use?

d