What's it called?

Cal Weldon · 16th June 2007, 12:45 AM

If you have a set of speakers with front and rear chambers and a plate amp on the back along with a woofer and a 3 way on the front as seen in the picture, is that known as a bi-amped 4 way or does it qualify as a 3 way 2.2 system? Does the .2 necessarily indicate a separate cabinet for each woofer?

EDIT: the front midbass has a high pass filter on it.

Curious Cal wants to know.

Moondog55 · 16th June 2007, 01:00 AM

Just to display my ignorance; if the front mounted midwoofer has a high pass filter, does the plate amp have the usual High/low second order filter and is the high pass on the midwoofer a single cap or is it more complicated than that??
Nomenclature seems to depend on who builds it.
I have always thought that my towers were just nonstandard three ways but in another forum I was told emphatically that had to desribe them as a 4wayby one person and 3.5 way by another: is there a convention we should be working towards??
ted

wigginjs · 16th June 2007, 01:11 AM

High pass filter means it's a bi-amped 4 way. If there was no high pass filter it would be a 3-way with subwoofer

MJL21193 · 16th June 2007, 01:16 AM

My vote goes for bi-amped 4 way.
4 drivers, covering 4 frequency ranges (assuming no overlap between midwoof and sub).
With overlap, bi-amped 3.5?

wigginjs · 16th June 2007, 01:18 AM

well, 3.5 way in my understanding has always been when you use two of the same woofer to cover different frequency ranges. (ie. two of whatever the largest woofer is, one with a high-pass filter, one without)

MJL21193 · 16th June 2007, 01:21 AM

Quote:

Originally posted by m0tion
well, 3.5 way in my understanding has always been when you use two of the same woofer to cover different frequency ranges. (ie. two of whatever the largest woofer is, one with a high-pass filter, one without)

True. My mistake.

planet10 · 16th June 2007, 03:12 AM

Cal,

It is a biamped 4-way.

In an x.5-way system an even number of (usually identical) woofers of mid-woofers with half of the drivers covering the range up to the next driver (mid or tweeter) and going all the way down. The other half (0.5 driver(s)) of are crossed over below the baffle-step to fill in the BS loss. XO on the 0.5 unit(s) is usually 1st order.

A 2.2 system would refer ro an HT system with Left & Right and 2 subwooders feed LFE channel(s)

dave

Cal Weldon · 16th June 2007, 04:32 PM

Quote:

Originally posted by planet10
It is a biamped 4-way.

I think so too.

Quote:

[i]A 2.2 system would refer ro an HT system with Left & Right and 2 subwooders feed LFE channel(s)[/B]

Isn't that what I have?

planet10 · 16th June 2007, 04:40 PM

Quote:

Originally posted by Cal Weldon
Isn't that what I have?

Only if they the woofers are getting their feed from the subwoofer output(s) on your HT reciever

dave

Cal Weldon · 16th June 2007, 04:41 PM

OK gotcha. Thanks Dave, now I can sleep at night.

16th June 2007, 01:00 AM	#2
Moondog55 diyAudio Member Join Date: Jun 2007 Location: Norlane; Geelong: Victoria: Australia	Just to display my ignorance; if the front mounted midwoofer has a high pass filter, does the plate amp have the usual High/low second order filter and is the high pass on the midwoofer a single cap or is it more complicated than that?? Nomenclature seems to depend on who builds it. I have always thought that my towers were just nonstandard three ways but in another forum I was told emphatically that had to desribe them as a 4wayby one person and 3.5 way by another: is there a convention we should be working towards?? ted __________________ QUOTE" The more I know, the more I know, I know (insert maniacal laugh >here<) NOTHING"

16th June 2007, 01:11 AM	#3
wigginjs diyAudio Member Join Date: Dec 2003 Location: Columbia, SC	High pass filter means it's a bi-amped 4 way. If there was no high pass filter it would be a 3-way with subwoofer __________________ The Four Chairs DIY Home Theater

16th June 2007, 01:18 AM	#5
wigginjs diyAudio Member Join Date: Dec 2003 Location: Columbia, SC	well, 3.5 way in my understanding has always been when you use two of the same woofer to cover different frequency ranges. (ie. two of whatever the largest woofer is, one with a high-pass filter, one without) __________________ The Four Chairs DIY Home Theater

16th June 2007, 03:12 AM	#7
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Cal, It is a biamped 4-way. In an x.5-way system an even number of (usually identical) woofers of mid-woofers with half of the drivers covering the range up to the next driver (mid or tweeter) and going all the way down. The other half (0.5 driver(s)) of are crossed over below the baffle-step to fill in the BS loss. XO on the 0.5 unit(s) is usually 1st order. A 2.2 system would refer ro an HT system with Left & Right and 2 subwooders feed LFE channel(s) dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

16th June 2007, 04:41 PM	#10
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	OK gotcha. Thanks Dave, now I can sleep at night. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting


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16th June 2007, 01:16 AM	#4
MJL21193 Account disabled at member's request Join Date: Mar 2007	My vote goes for bi-amped 4 way. 4 drivers, covering 4 frequency ranges (assuming no overlap between midwoof and sub). With overlap, bi-amped 3.5?

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