Re: My HT evolution project.
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Joined: Aug 2009
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axiomite
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OP
axiomite
Joined: Aug 2009
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Here's another idea. This particular product is overkill for what I need, but it looks like you can switch pairs of speakers on and off and it has variable adjustment rotary knobs for volume control. This product allows for 2 stereo inputs (I only need one for Left and Right channel, although it could also be used for surrounds if one wanted to) and 5 stereo outputs (I only need 2). Just a thought.
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Re: My HT evolution project.
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
I have a feeling that'll impact the audio performance poorly.
It really isn't a good idea to attempt to adjust the volume after the power amplifier.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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Re: My HT evolution project.
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Joined: Aug 2009
Posts: 6,015
axiomite
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OP
axiomite
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You're probably right, but how else could I decrease the volume in 1 pair of speakers where 2 pair of them are wired in parallel?
I may not even need to, but am planning in advance just in case.
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Re: My HT evolution project.
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Joined: Dec 2008
Posts: 6,928
axiomite
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axiomite
Joined: Dec 2008
Posts: 6,928 |
Could you use an in-line attenuator? I believe they usually come in 3db increments.
Half of communication is listening. You can't listen with your mouth.
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Re: My HT evolution project.
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Joined: Aug 2009
Posts: 6,015
axiomite
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OP
axiomite
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From checking around on the internet, I don't think I can use an attenuator. It seems to mess with the impedance.
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Re: My HT evolution project.
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Joined: Oct 2006
Posts: 6,955
axiomite
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axiomite
Joined: Oct 2006
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Please excuse me for not reading back further in the thread where this is undoubtedly covered, but can you wire these up as a zone two or zone three off your receiver to accomplish separate volume control or does the physical layout prevent the extra wiring?
With great power comes Awesome irresponsibility.
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Re: My HT evolution project.
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Joined: Dec 2008
Posts: 6,928
axiomite
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axiomite
Joined: Dec 2008
Posts: 6,928 |
From checking around on the internet, I don't think I can use an attenuator. It seems to mess with the impedance. Have you looked at an L-pad as a possibility? They are usually used to "tune" individual drivers in a speaker. Maybe one of the engineery guys can comment.
Half of communication is listening. You can't listen with your mouth.
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Re: My HT evolution project.
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Joined: Aug 2009
Posts: 6,015
axiomite
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OP
axiomite
Joined: Aug 2009
Posts: 6,015 |
Please excuse me for not reading back further in the thread where this is undoubtedly covered, but can you wire these up as a zone two or zone three off your receiver to accomplish separate volume control or does the physical layout prevent the extra wiring? Nope. Using 2 pairs of speakers for Left and Right channels. Zone 2 is stereo only from a different source.
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Re: My HT evolution project.
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Joined: Aug 2009
Posts: 6,015
axiomite
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OP
axiomite
Joined: Aug 2009
Posts: 6,015 |
From checking around on the internet, I don't think I can use an attenuator. It seems to mess with the impedance. Have you looked at an L-pad as a possibility? They are usually used to "tune" individual drivers in a speaker. Maybe one of the engineery guys can comment. An L-pad is what is used inside of the volume controls designed for HT speakers. It has 12 steps. Now, if I just know how many decibels were adjusted per step. Edit: At least that's what I understand by internet reading.
Last edited by CatBrat; 07/15/10 08:15 PM.
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Re: My HT evolution project.
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Joined: Aug 2009
Posts: 6,015
axiomite
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OP
axiomite
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I just thought I'd point out that for the past 2 weeks, I've been running the Pioneer Elite VSX-21TXH at 4 ohm for the mains by having 2 pairs of 8 ohm speakers wired in parallel. At least, I think that is right.
I was wondering if it would support 4 ohm speakers, so the answer to that is yes.
I've been studying up on comb filtering and was wondering if perhaps having 2 pairs of mains may be causing the problem when I moved an SPL meter just a few inches during the playback of a single tone I got as much as 20db in sound difference. I was 8-9 feet back from the speakers.
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