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#397435 - 09/27/13 11:02 PM Question about VP180 crossover
DougieBaby Offline
frequent flier

Registered: 12/06/10
Posts: 11
I was listening to a Spyro Gyra SACD with a 5.1 mix the other day. Great music, btw, for demoing speakers and audio equipment. Anyhow in one song there is a long bass guitar solo that's mixed entirely in the center channel. I was paying close attention to the drivers in my VP180 during the bass solo, and I noticed during the lowest pitched notes of the solo, that the midrange drivers were moving quite a lot, with large extension, along with the two woofers. I would have thought that the crossover electronics in the VP180 should send the low freq signals only to the woofers, but it seems the mid range drivers are also getting low freq signals to cause them to move with high extension. Is it possible he crossover in my Center is defective or is this normal operation?

-Dougie

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#397436 - 09/27/13 11:21 PM Re: Question about VP180 crossover [Re: DougieBaby]
tomtuttle Offline
axiomite

Registered: 06/20/03
Posts: 8143
Loc: Tacoma
How did it sound?
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#397437 - 09/27/13 11:49 PM Re: Question about VP180 crossover [Re: DougieBaby]
DougieBaby Offline
frequent flier

Registered: 12/06/10
Posts: 11
It sounded great, I suppose that is what matters. However sometimes while watching movies I feel something is missing in center dialog. But that might just be my hearing lol.

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#397439 - 09/28/13 12:34 AM Re: Question about VP180 crossover [Re: DougieBaby]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13311
Loc: Iowa
It could be how you have configured or setup your AVR in regards to distance, delay, crossover, etc.
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#397441 - 09/28/13 05:14 AM Re: Question about VP180 crossover [Re: DougieBaby]
MarkSJohnson Online   happy
shareholder in the making

Registered: 09/27/04
Posts: 10694
Loc: Central NH
Even in a "bass" solo, much (if not most) of what you hear are upper harmonics. I'd say that what you're describing is perfectly normal.
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#397451 - 09/28/13 11:07 AM Re: Question about VP180 crossover [Re: DougieBaby]
casey01 Offline
aficionado

Registered: 07/03/08
Posts: 736
Loc: Toronto
Originally Posted By: DougieBaby
I was listening to a Spyro Gyra SACD with a 5.1 mix the other day. Great music, btw, for demoing speakers and audio equipment. Anyhow in one song there is a long bass guitar solo that's mixed entirely in the center channel. I was paying close attention to the drivers in my VP180 during the bass solo, and I noticed during the lowest pitched notes of the solo, that the midrange drivers were moving quite a lot, with large extension, along with the two woofers. I would have thought that the crossover electronics in the VP180 should send the low freq signals only to the woofers, but it seems the mid range drivers are also getting low freq signals to cause them to move with high extension. Is it possible he crossover in my Center is defective or is this normal operation?

-Dougie


If the sound is good and it is not distorting then, no problem. Like the others have already mentioned, it depends where you have done your speaker settings on your AVR. Electric bass doesn't go much below 60HZ even at its lowest register, a frequency range the VP180 is more than capable of handling. Its pretty common knowledge, but even if you have your crossover for the center channel set at 60/80HZ, its a gradual roll-off not a sudden elimination of frequencies below the set level so you will still hear frequencies below that level. If you have the center set at full-range, then that's OK too.

That is the great advantage of full-range center channel speakers, you get significantly more flexibility in your set-up and it sounds better too with a much smoother blend with everything else.

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#397456 - 09/28/13 04:24 PM Re: Question about VP180 crossover [Re: DougieBaby]
exlabdriver Offline
aficionado

Registered: 09/07/11
Posts: 813
A 5-String Bass reaches 30 Hz with the B0 note on the lowest open string...

TAM

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#397457 - 09/28/13 10:01 PM Re: Question about VP180 crossover [Re: DougieBaby]
JohnK Online   content
shareholder in the making

Registered: 05/11/02
Posts: 10308
Dougie, Mark is correct; the fundamental low bass note at say 40 or 50Hz is just a small part of the total sound that the bass guitar produced at that instant. The harmonics of a 50Hz fundamental at 100Hz, 150Hz, 200Hz etc. are what produce the actual tone that we hear. Hearing only the 50Hz fundamental(e.g., by disconnecting the wires from the speakers and listening to the sub alone)would be anything but "musical". The harmonics are reproduced in large part by the mid-range drivers and they certainly have to be moving even on a "bass" note.
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