Speaker hiss coming from QS8 tweaters
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Joined: Sep 2006
Posts: 4
newbie
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OP
newbie
Joined: Sep 2006
Posts: 4 |
Hi, I'm having a bit of a problem with lots of hiss coming from the tweaters on my QS8s. There is also some hiss coming from the M60s, but it's not really audible unless the volume is very high or if I put my ear to the speaker. Here's my setup:
Pioneer VSX-1015TXK receiver Axiom QS8 surrounds Axiom M60 towers 14 gauge speaker wire at about 20 feet long dayton banana plugs (probably dayton, not entirely sure) source: xbox 360 with toslink cable/Sony SACD player with rca cables
I've routed all the wires away from electrical cords as best as possible. The receiver sits on the SACD player, and those are the only components in the area.
Any thoughts? I'm a bit of a home theater n00b, so I may have just overlooked something simple.
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Re: Speaker hiss coming from QS8 tweaters
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
how loud is the hiss, and how far away are you from the speaker when you can start to hear it? It can be normal to hear a little hiss from the speakers.
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Speaker hiss coming from QS8 tweaters
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Joined: May 2003
Posts: 18,044
shareholder in the making
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shareholder in the making
Joined: May 2003
Posts: 18,044 |
Also, how high are the surround channels boosted on the Pioneer?
I am the Doctor, and THIS... is my SPOON!
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Re: Speaker hiss coming from QS8 tweaters
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Joined: Jan 2002
Posts: 3,270
connoisseur
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connoisseur
Joined: Jan 2002
Posts: 3,270 |
Hi DS,
All solid-state (and tube) amplifiers produce residual noise or hiss--it's called "thermal noise", a product of the amplification process. In a well-designed amplifier, it should only be noticeable if you are very close to the speaker or tweeter and the volume is turned up fairly high.
It shouldn't be audible from a normal listening position. Thermal noise will vary somewhat from one product to another and how many stages of gain (amplification) are in the chain.
For example, if your receiver has a "Phono" input for a turntable, that will add an extra stage of gain, and some phono pre-amps can be quite noisy. Other well-designed may be almost silent. A moving-coil cartridge preamp adds yet another gain stage, and those too may be even noisier.
Do check your surround levels. If you have them extremely high and/or Pioneer has saved some money in the surround-channel amps, then some hiss is likely audible.
Regards,
Alan
Alan Lofft, Axiom Resident Expert (Retired)
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Re: Speaker hiss coming from QS8 tweaters
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Joined: Sep 2006
Posts: 4
newbie
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OP
newbie
Joined: Sep 2006
Posts: 4 |
Thanks for all the replies.
kcarlile reminded me that I had forgotten to adjust the distance setting for the amp in my new space. That helped a bunch.
Also, I decided to do a test based on alan's post. I unplugged the fronts and the surrounds and plugged the surrounds into the front outputs. That also reduced more of the hiss, leading me to believe that the receiver has some limitations in the back channels. When I got home, I checked the model number and found it was the older vsx-1015tx, not the vsx-1015txk.
The speakers are only about 6 feet to my right and left, so not very far at all. It's a pretty small room.
Anyway, the hiss is mostly gone unless I jack the volume way up (which I do, sometimes), so I'll probably just deal with it for now. Although I would happily take any more suggestions, if there is anything else worth trying.
Thanks!
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Re: Speaker hiss coming from QS8 tweaters
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Joined: Mar 2008
Posts: 1,378
connoisseur
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connoisseur
Joined: Mar 2008
Posts: 1,378 |
Check for snakes, leaky tires, and angry cats.
LFR1100 Actives,QS10HPx2,QS8x2,EP800,M3x4,M3x2 (Wood),M5HPx2 (Wood),AxiomAir,ADA1500-8,ADA1500-7
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Re: Speaker hiss coming from QS8 tweaters
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Joined: Dec 2003
Posts: 10,420
shareholder in the making
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shareholder in the making
Joined: Dec 2003
Posts: 10,420 |
I can't believe no one suggested a power conditioner
Jason M80 v2 VP160 v3 QS8 v2 PB13 Ultra Denon 3808 Samsung 85" Q70
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Re: Speaker hiss coming from QS8 tweaters
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Joined: Jan 2006
Posts: 683
aficionado
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aficionado
Joined: Jan 2006
Posts: 683 |
Check for snakes, leaky tires, and angry cats. Almost lost my coffee. Good stuff!
Epic 80 / SVS PB13 Ultra Denon 3805 / M2200 Outlaw Monos / Sammy 55" LED
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