As long as there is nothing defective with your cables, I really doubt they are the problem. Others have mentioned ground noise; I agree, that is definitely a good place to start. Also, are you sure you are running the theta in single ended as opposed to balanced mode? I use Ayre amps. Your Theta is designed by the same person that owns Ayre so there are probably some similarities between our amps. On my V5's, if I don't flip the switch to SE when using non balanced components, I get a hum. (Actually, that's not entirely accurate. If I use a really well shielded cable like Audioquest, I get no hum and can leave it in balanced mode. The only reason I bring this up is that it sounds better like this and may help you out in the future.) The only other thing I can think of is some type of gain mismatch between your components. I have a Wadia CD player and a VAC amp that I had been using for a while with no problems until I got a very efficient pair of speakers (Wilson). This led to a hum and I had to back off the gain on the Wadia. As some of the others have stated, I would first look at the grounding issue. It makes sense, and what ever you do, don't spend any $ until you are sure what the problem is. (And don't sell anything either. Nothing worse than taking your best component and getting rid of it thinking that it is the problem. I know from experience.)
Speaker noises
Hi,
I am a newbie in HiFi and HT, and I just bought some used speakers, pre-amp and amp to build my first HT.
I tested my system for the audio part and wanted to know why there are very obvious noises from the speakers. Anyone can hear this kind of noise even in a room that is not so quite and when you are 5-10 feet away from the speakers.
Currently I only have front speakers (Revel F32), a center speaker (Revel voice) and a sub (JL Audio F112).
Below is my configuration. I am using some cheap cables because that's what I have in my hands right now, and the main goal of my testing was to show that the items work (otherwise I will contact the seller for a solution).
1. Laptop playing CD, connected to Pre-amp (Marantz AV7005) using RCA audio cables (like this cable but a cheaper version: http://www.radioshack.com/product/index.jsp?productId=2290564)
2. RCA audio cable from pre-amp unbalanced audio pre-out to Theta Dreadnaught single ended jack. (FL, FR and center signals are connected).
3. audio cable (Gauge 24 bare wire) from Dreadnaught to FL, FR and center speakers).
When I turn the volume down to 0 in the pre-amp, I can hear very obvious noises from all 3 speakers, and the noises basically remain constant when I turn the volume up in the pre-amp. Since all speakers have the same noise, it doesn't look like speakers' problem.
And I also tried a different pre-amp (a much cheaper one), and still get the same amount of noise, so this basically rules out the pre-amp's problem.
One thing I have to let you know is that I am using 24 gauge speaker cables connecting the Dreadnaught to the speakers. Revel F32's user manual has a table listing the recommended max speaker cable length when connecting to this speaker, the max cable length varies depending on the gauge of the cable. The table listed all the way to gauge 18, so gauge 24 wire is not included in the table.
I can understand speaker cables can affect the sound quality, and eventually I will buy some better wires/cables. Now I just use what I have in my hand for some basic testing. But I am not sure if it is going to cause this much noise. I am new to the HiFi and fancy home theater thing, so I am asking for experts' opinion on this forum.
Thank you very much!
I am a newbie in HiFi and HT, and I just bought some used speakers, pre-amp and amp to build my first HT.
I tested my system for the audio part and wanted to know why there are very obvious noises from the speakers. Anyone can hear this kind of noise even in a room that is not so quite and when you are 5-10 feet away from the speakers.
Currently I only have front speakers (Revel F32), a center speaker (Revel voice) and a sub (JL Audio F112).
Below is my configuration. I am using some cheap cables because that's what I have in my hands right now, and the main goal of my testing was to show that the items work (otherwise I will contact the seller for a solution).
1. Laptop playing CD, connected to Pre-amp (Marantz AV7005) using RCA audio cables (like this cable but a cheaper version: http://www.radioshack.com/product/index.jsp?productId=2290564)
2. RCA audio cable from pre-amp unbalanced audio pre-out to Theta Dreadnaught single ended jack. (FL, FR and center signals are connected).
3. audio cable (Gauge 24 bare wire) from Dreadnaught to FL, FR and center speakers).
When I turn the volume down to 0 in the pre-amp, I can hear very obvious noises from all 3 speakers, and the noises basically remain constant when I turn the volume up in the pre-amp. Since all speakers have the same noise, it doesn't look like speakers' problem.
And I also tried a different pre-amp (a much cheaper one), and still get the same amount of noise, so this basically rules out the pre-amp's problem.
One thing I have to let you know is that I am using 24 gauge speaker cables connecting the Dreadnaught to the speakers. Revel F32's user manual has a table listing the recommended max speaker cable length when connecting to this speaker, the max cable length varies depending on the gauge of the cable. The table listed all the way to gauge 18, so gauge 24 wire is not included in the table.
I can understand speaker cables can affect the sound quality, and eventually I will buy some better wires/cables. Now I just use what I have in my hand for some basic testing. But I am not sure if it is going to cause this much noise. I am new to the HiFi and fancy home theater thing, so I am asking for experts' opinion on this forum.
Thank you very much!
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- 11 posts total
- 11 posts total