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Crossover cascading
Yahzi
post Apr 12 2013, 20:39
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Hi,

Just wanted confirmation on something. I was having a discussion with someone about crossovers, especially low-pass filters as we were discussing bass management. I told him that he should disable his subwoofer LPF to avoid interaction from his AVR LPF. His response was that the internal passive crossovers in the speakers would still, in effect, cascade if using an active crossover in the AVR.

I'm not sure how this could be. You guys are the experts, just thought I would get your feedback on this.
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Yahzi
post Apr 15 2013, 16:55
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Group: Members
Posts: 189
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Member No.: 104669



QUOTE
Their electrical amplitude responses will be multiplied. Their responses given in dB will add.


How?
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Posts in this topic
- Yahzi   Crossover cascading   Apr 12 2013, 20:39
- - Arnold B. Krueger   QUOTE (Yahzi @ Apr 12 2013, 15:39) Hi, J...   Apr 12 2013, 22:16
- - Yahzi   I understand that. But what I am asking is if the ...   Apr 12 2013, 22:31
|- - Arnold B. Krueger   QUOTE (Yahzi @ Apr 12 2013, 17:31) I unde...   Apr 12 2013, 22:39
- - Yahzi   QUOTE ("arnyk")How do you all of a sudde...   Apr 12 2013, 22:48
|- - julf   QUOTE (Yahzi @ Apr 12 2013, 23:48) 2. If ...   Apr 13 2013, 11:35
- - Yahzi   QUOTE ("Arnold B. Krueger")If so why are...   Apr 12 2013, 22:52
|- - Arnold B. Krueger   QUOTE (Yahzi @ Apr 12 2013, 17:52) QUOTE ...   Apr 13 2013, 16:06
- - Yahzi   QUOTE ("Arnold B Krueger")Obviously, you...   Apr 13 2013, 16:58
- - Yahzi   QUOTE ("julf")If you apply one filter, a...   Apr 13 2013, 17:09
|- - Soap   QUOTE (Yahzi @ Apr 13 2013, 11:09) . But ...   Apr 13 2013, 19:29
- - Yahzi   QUOTE ("Soap")Yes. A filter is a filter...   Apr 13 2013, 19:33
|- - Soap   QUOTE (Yahzi @ Apr 13 2013, 13:33) Please...   Apr 13 2013, 19:53
- - Yahzi   Actually just forget about. I said "if a spea...   Apr 13 2013, 20:02
|- - Soap   QUOTE (Yahzi @ Apr 13 2013, 14:02) If you...   Apr 13 2013, 20:11
|- - julf   QUOTE (Yahzi @ Apr 13 2013, 21:02) I...   Apr 15 2013, 09:58
|- - Arnold B. Krueger   QUOTE (Yahzi @ Apr 13 2013, 15:02) Actual...   Apr 15 2013, 15:25
- - Yahzi   QUOTE Their electrical amplitude responses will be...   Apr 15 2013, 16:55
- - greynol   There's a point where you either enroll in a c...   Apr 15 2013, 17:43
- - Yahzi   QUOTE ("greynol")There's a point whe...   Apr 15 2013, 17:55
|- - ktf   QUOTE (Yahzi @ Apr 15 2013, 18:55) If two...   Apr 15 2013, 18:09
|- - julf   QUOTE (Yahzi @ Apr 15 2013, 18:55) But no...   Apr 16 2013, 10:04
|- - Nessuno   QUOTE (julf @ Apr 16 2013, 11:04) You hav...   Apr 16 2013, 11:33
||- - julf   QUOTE (Nessuno @ Apr 16 2013, 12:33) Or t...   Apr 16 2013, 11:58
|- - db1989   For one, you keep talking about filters that are s...   Apr 20 2013, 12:09
|- - julf   QUOTE (db1989 @ Apr 20 2013, 13:09) For o...   Apr 20 2013, 12:40
|- - greynol   QUOTE (julf @ Apr 20 2013, 04:40) The 25 ...   Apr 20 2013, 13:12
|- - julf   QUOTE (greynol @ Apr 20 2013, 14:12) QUOT...   Apr 20 2013, 16:24
|- - db1989   QUOTE (julf @ Apr 20 2013, 16:24) The poi...   Apr 20 2013, 16:59
|- - julf   QUOTE (db1989 @ Apr 20 2013, 17:59) And t...   Apr 20 2013, 17:12
- - Propheticus   The filters add up! The end result will be inp...   Apr 15 2013, 18:46
- - greynol   They add because decibels are logarithmic. So in ...   Apr 15 2013, 19:14
- - dhromed   Even after this thread I'm still not sure what...   Apr 16 2013, 12:36
|- - Nessuno   QUOTE (dhromed @ Apr 16 2013, 13:36) Even...   Apr 16 2013, 13:01
||- - julf   QUOTE (Nessuno @ Apr 16 2013, 14:01) I th...   Apr 16 2013, 13:42
|- - krabapple   QUOTE (dhromed @ Apr 16 2013, 07:36) Even...   Apr 18 2013, 04:37
- - Speedskater   As a side note: Understanding Decibel math is no ...   Apr 16 2013, 15:02
|- - julf   QUOTE (Speedskater @ Apr 16 2013, 16:02) ...   Apr 16 2013, 15:34
- - greynol   We experience much of the world logarithmically. ...   Apr 16 2013, 16:07
- - Yahzi   The question I asked was "can the speaker cro...   Apr 17 2013, 13:47
|- - julf   QUOTE (Yahzi @ Apr 17 2013, 14:47) WHATEV...   Apr 17 2013, 15:14
- - Yahzi   The person I was discussing who claimed the passiv...   Apr 17 2013, 13:49
|- - julf   QUOTE (Yahzi @ Apr 17 2013, 14:49) The pe...   Apr 17 2013, 15:16
- - dhromed   What do you mean by cascade?   Apr 17 2013, 14:38
|- - knutinh   QUOTE (dhromed @ Apr 17 2013, 14:38) What...   Apr 17 2013, 14:53
|- - dhromed   QUOTE (knutinh @ Apr 17 2013, 15:53) I ta...   Apr 17 2013, 15:26
- - Propheticus   If the two slopes are in the same range they will ...   Apr 17 2013, 15:06
- - Yahzi   QUOTE I'm also not entirely sure any more what...   Apr 19 2013, 14:15
|- - julf   QUOTE (Yahzi @ Apr 19 2013, 15:15) I agre...   Apr 19 2013, 16:17
- - greynol   They combine regardless of whether they operate in...   Apr 19 2013, 14:58
- - pdq   How about this explanation: If the crossover freq...   Apr 19 2013, 15:21
- - greynol   That's funny since the original post appears t...   Apr 19 2013, 16:23
- - Yahzi   QUOTE ("julf")So please accept that you ...   Apr 19 2013, 19:58
|- - julf   QUOTE (Yahzi @ Apr 19 2013, 20:58) But I ...   Apr 19 2013, 22:16
|- - greynol   QUOTE (julf @ Apr 19 2013, 14:16) Because...   Apr 19 2013, 22:27
|- - julf   QUOTE (greynol @ Apr 19 2013, 23:27) Plea...   Apr 20 2013, 10:33
- - Yahzi   QUOTE ("julf")And how do they know if th...   Apr 19 2013, 20:03
- - Yahzi   QUOTE ("dhromed")In any case, Arnold sai...   Apr 19 2013, 20:06
- - greynol   http://www.hydrogenaudio.org/forums/index....st...   Apr 19 2013, 20:13
- - pdq   The folks here are an excellent source of informat...   Apr 19 2013, 20:17
- - Yahzi   Perhaps where the confusion is coming from is that...   Apr 19 2013, 20:40
- - Yahzi   QUOTE ("pdq")I think the problem may be ...   Apr 19 2013, 20:46
|- - julf   QUOTE (Yahzi @ Apr 19 2013, 21:46) I am a...   Apr 19 2013, 22:10
- - Yahzi   Read this reply from the member towards the bottom...   Apr 19 2013, 22:25
|- - greynol   QUOTE (Yahzi @ Apr 19 2013, 14:25) Read t...   Apr 19 2013, 22:32
- - Yahzi   Well greynol, what am I supposed to do? The EE is ...   Apr 19 2013, 22:38
- - greynol   I'm an EE (so is Arny and likely others). I r...   Apr 19 2013, 22:48
- - Yahzi   Well thanks for the conflicting information. You r...   Apr 19 2013, 22:50
- - greynol   Just reading your posts you get conflicting inform...   Apr 19 2013, 22:54
- - greynol   Perhaps you can provide either some math or a grap...   Apr 20 2013, 12:21
- - db1989   QUOTE Hopefully the scilab plot explains it better...   Apr 20 2013, 17:35
- - julf   QUOTE (db1989 @ Apr 20 2013, 18:35) A gra...   Apr 20 2013, 17:55


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