[pp06ux]

Hi everyone, I'm looking to purchase full range drivers however I want everything in the ball park of 300hz and below cut off....in other words no sub bass/bass to bleed through even if the signal contains a lower frequency.

Does this type of setup exist?

[JohnR]

This might be better in the Single Driver circle... however, the best way to accomplish what you are asking would be to use a crossover.

[Æ]

Hi everyone, I'm looking to purchase full range drivers however I want everything in the ball park of 300hz and below cut off....in other words no sub bass/bass to bleed through even if the signal contains a lower frequency.

Does this type of setup exist?

Yes, block the bass by using a high pass crossover on the full range driver.
Either a passive crossover wired directly to the full range driver or an active crossover at the input of the amp. Line level.

[planet10]

What you are describing is a FAST. A 2-way system with a low XO (typically 80-400 Hz). Now that there are very good FR with response to 20k & beyond, they make a whole lot of sense. Earlier today i made a couple posts on these.

http://www.diyaudio.com/forums/full-range/210097-wavecor-fr070wa01.html#post2971690
http://www.diyaudio.com/forums/full-range/210097-wavecor-fr070wa01-2.html#post2971970

Some examples, and more discussion on theory & implementation.

http://www.diyaudio.com/forums/full-range/144099-thread-tysen-variations-fast.html



dave

[JLM]

In theory a small driver (less than 3 inch diameter) in a sealed cabinet comes to mind, but output (ultimate spl) would probably be quite limited.

[FullRangeMan]

Hi everyone, I'm looking to purchase full range drivers however I want everything in the ball park of 300hz and below cut off....in other words no sub bass/bass to bleed through even if the signal contains a lower frequency.

Does this type of setup exist?

Came to mind the Visaton B200 and Dayton PPS220-8, bot 8inches and with low bass , at least in the chart.

[Letitroll98]

Hi everyone, I'm looking to purchase full range drivers however I want everything in the ball park of 300hz and below cut off....in other words no sub bass/bass to bleed through even if the signal contains a lower frequency.

Does this type of setup exist?

This might be better in the Single Driver circle... however, the best way to accomplish what you are asking would be to use a crossover.

Yes, I think we should move this there, but lets ask the OP if he is looking for something Cheap and Cheerful.  Perhaps something like this?



HiVi B3S 3" Shielded Aluminum Driver
"Frequency range: 300-15,000,  Your Price  $13.92"

http://www.parts-express.com/pe/showdetl.cfm?Partnumber=297-427

[jonnoshore]

I've just bought 4 of these for £7.50 inclusive shipped each

http://monacor.co.uk/products/speakerbuilding-hifi6-9/vnr/105370/

They are sat at home... I'll let you know how they sound in good time...

My plan is to make something like this...
http://www.audiocircle.com/index.php?topic=46951.0

Which is a budget style speaker...

The higher sensitivity and lower FR of the 200X should be ok but may need rolling off at the top... but like the look of the response...  I plan to look for some planks to do some initial trials


John

[chrisby]

Hi everyone, I'm looking to purchase full range drivers however I want everything in the ball park of 300hz and below cut off....in other words no sub bass/bass to bleed through even if the signal contains a lower frequency.

Does this type of setup exist?

to ad lib on JohnR's comment - a driver that doesn't respond to signal (after filtering),  well how much good would that be? 

 But seriously,  at the neighbourhood you've proposed ( 300ish HZ) an active XO'd system makes the most sense, and there are numerous ways to accomplish that - from dedicated passive line level (such as the system in Planet10's post @  330HZ IIRC) to Behringer / mini-dsp etc

A pertinent question might be - is this intended for music only, or for home cinema set-up?  If the latter, many of current mainstream commercial HT processors have substantially more flexible DSP EQ/XO/Bass management than would have been available even 5 years ago for many times the total cost.  Note that they do tend to cut off the mains to LFE channel XO in the 120-150Hz range, but many smaller FR ( 4" etc) are quite competent when relieved from the heavy lifting from that area on up. 

Second question would be - how large a venue?
 

[sts9fan]

I hate the acronym FAST. Adding a letter just so it's a word is silly. I had a boss that would always do that. Hopefully tomorrow I will be able to test out my FAS system. Using a minidsp and two parts express enclosures.

[JohnR]

Ah-hah. What does FAS stand for? Fullrange active speaker?

[sts9fan]

Fullrange And Subwoofer

[JohnR]

Meh. 400 Hz is not subwoofer territory.

[sts9fan]

FAW?

[JRace]

I hate the acronym FAST. Adding a letter just so it's a word is silly. I had a boss that would always do that. Hopefully tomorrow I will be able to test out my FAS system. Using a minidsp and two parts express enclosures.

Well then it would be
F R A
As FAST stands for Full Range Assisted

[planet10]

AFAIK, FAST came out of Europe and is officially Fullrange And Subwoofer Technology, but i've seen at least one better expansion of the TLA.

dave

[JohnR]

I hesitate to ask. Nonetheless, I don't see how the acronym adds any value, all it does is confuse people. I've seen the term tossed around for a while now but never knew what it was. What's wrong with calling is "adding a subwoofer" or "two-way speaker."

[planet10]

The best ones use midwoofers not subwoofers, and in most peoples minds a 2-way is cone + dome (or ribbon) speaker -- XO just inside or above the critical range. FAST is a TLA that just stuck, and signifies a woofer + midtweeter with the XO at or below the critical range. I'm not a big fan of the acronym either but like RCAs & HDMI (were it is the tech not the TLA that are weak) we are just gonna have to live with it.

dave