Need help with Crossovers - Silver Flute's Vifa tweets

[Drummer65 10+ year member]

Hey Guys

Right now i have this active crossover for my silver flutes and vifa tweets - SoundStorm SX310 Crossovers at Onlinecarstereo.com

My flutes are set at 80Hz+ and my tweets are set at 3500+. Would i benefit if i low pass the flutes at 3500 and stop them from playing those higher frequencies or is it not worth it? How can i bandpass the flues without buying another active crossover do they have individual low pass filters from 3500hz and down?

Thanks guys

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[supermaxx123 10+ year member]

I have a crossover very similar to that and always wondered that too. You need a low-pass that can go high enough say in the 5k range. I use my audiocontrol dqx and it has a bandpass.

 

[FtheNutHuggers]

Look online for F-mods. They are in-line RCA passive filters. You should be able to find an F-mod of appx the freq you want/need.

 

[Drummer65 10+ year member]

I wish i had the money for a Audiocontrol DQX. The F-mod's only go up to about 500hz

*edit* actually i found them, but they seem to be out of business

http://www.hlabs.com/products/crossover/

Is it even worth the extra money to bandpass the flutes or will i not hear a difference?

 

[supermaxx123 10+ year member]

whats the point of putting a passive crossover on an active unit? My mb quart and sundown amps both have high and low pass x10 buttons that raise the frequency. That would be the easiest thing to use i think, along with your unit.

 

[Drummer65 10+ year member]

unfortunately my amps don't have the x10 multiplier. would it be worth spending $150+ on a new active crossover just to bandpass the flutes to 80-3500Hz or would it not make a difference?

 

[The_Grimy_One 10+ year member]

Well to run active you just have to set a high pass on the woofer and a low pass on the tweeter. The tweeter will play 3500 all the way up to 22k. The woofer will play probably like 70 up to 3500 or so. You can basically bandpass the woofer by just cutting the frequency off @ 80 Hz on your deck... The only reason you would truly need a bandpass would be if you were running a 3 way active set where you would cut it off around 500Hz and stop it from going past 3000Hz, this is just an approximation.

This is my understanding anyway. Because a passive Xover just cuts the woofer off at a point, and allows the tweeters to take the higher frequencies. You can still kill your woofer if you have the amp set on full pass and dont stop it from going down past about 70Hz or so...

 

[Drummer65 10+ year member]

I need the woofer to cut out at 3500hz so it plays 80-3500hz. I can set a high pass so it does not play below 80 but i dont see how i can set a low pass at 3500hz

 

[smgreen20 10+ year member]

So are you using the EQS746's AUX input as a source?

Sorry to say, but you're SOL on running active (in the normal sense) with what you have w/o spending some $$ to get what you'll need.

The EQS746 only has the 3 selectable xover points (iirc 50,90,120 Hz) from the mid/sub. The amp is only good for 55-550Hz. Your xover is good from 32-250 HP/LP and 32-250 HP w/a 20x multiplier = 640-5000 HP. Just trying to lay things out.

Here's what I'd do if I were you:

EQS746 use the 120 Hz xover on it then to the SX310's sub input, set the sub xover point on the SX310 to whatever point sounds best to you

On the SX310 I'd run the fronts set at 2500 Hz HP to the tweets

On the SX310 I'd run the rears set at 60 Hz HP to the mids- Don't worry, they can handle it then I'd get these FMOD Crossover Pair 2,500 Hz Low Pass for the mids LP. You'd put this in-line between the SX310 and the amp.

What you'll get basically is this:

Sub: whatever point you chose, I will use 80Hz, so 20-80 Hz

Mids: 60-2500 Hz

tweets: 2500-20K Hz

 

[Drummer65 10+ year member]

Thank you for the link that is what i was looking for. The highest low pass they have is 2,500Hz will my Vifa NE25VTS Tweeters be able to play all the way down to 2,500Hz without blowing?

 

[supermaxx123 10+ year member]

Well to run active you just have to set a high pass on the woofer and a low pass on the tweeter. The tweeter will play 3500 all the way up to 22k. The woofer will play probably like 70 up to 3500 or so. You can basically bandpass the woofer by just cutting the frequency off @ 80 Hz on your deck... The only reason you would truly need a bandpass would be if you were running a 3 way active set where you would cut it off around 500Hz and stop it from going past 3000Hz, this is just an approximation.
This is my understanding anyway. Because a passive Xover just cuts the woofer off at a point, and allows the tweeters to take the higher frequencies. You can still kill your woofer if you have the amp set on full pass and dont stop it from going down past about 70Hz or so...

2 ways need a bandpass also unless your having it play down to 20hz.

 

[Drummer65 10+ year member]

Should i go with the 3500Hz lowpass or the 2500Hz lowpass, parts-express has the 2500 and this site has the 3500

Crossovers

Which one do you think would be a better cut of freq for the flutes and for my tweets to pick up at?

 

[smgreen20 10+ year member]

I'd go with the 3500 Hz.

Those Flutes play very well into the upper end for mids that size. Protection of the tweeter too is a plus.

Wow! I just looked up the freq resp on those tweeters, 777-25k Hz. You shouldn't have any issues with the 2500 Hz filters. It's really your call. We all prefer different sound and have different budgets. I really don't think that the tweets will play that low, but ???

 

[Drummer65 10+ year member]

Yeah right now i'm leaning more towards 3500Hz. Tomorrow ill play the tweets down at 2500Hz see how they sound and handle.

 

[nauc 10+ year member]

you need a 3 way xover. you have a 2 way xover

a 3 way has a high and low pass for the mid. a 2 way doesnt