chayut
Registered: 07/10/11
Posts: 63
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| Posted 04/06/12 at 08:01 PM | Reply with quote #1 |
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Do you experience humming or hissing sound from either Catalyst or submersive?
Has anyone never experiences this issues?
And for those who has, how did you deal with the issues. Can you make the issues go away?
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audioguy
Registered: 05/24/09
Posts: 529
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| Posted 04/06/12 at 08:51 PM | Reply with quote #2 |
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| Mine have a veey low level hum if i put my ear next to the speaker (actually more like a hiss) which i believe is from the dsp engIne!
My guess is u have a ground loop issue.
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chayut
Registered: 07/10/11
Posts: 63
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| Posted 04/06/12 at 09:02 PM | Reply with quote #3 |
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Hi audioguy..
I have not received my Cats yet.
I just try to find the solution if the issue do happen.
If I remember correctly you own both Cat and Subm,
I guess you don't have any issue with the Subm, just the Cats correct?
Is the issue audible at normal viewing distance or at reference volume level?
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Bunga999
Registered: 03/12/10
Posts: 76
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| Posted 04/07/12 at 12:04 AM | Reply with quote #4 |
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I have a SubMersive HP hooked up to an Onkyo 805 receiver using the XLR/RCA cable that Mark supplies with the SubMersive. I dont have any hum issue.
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audioguy
Registered: 05/24/09
Posts: 529
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| Posted 04/07/12 at 08:13 AM | Reply with quote #5 |
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No hum but the noise of the dsp is audible on both the sub and Cat with my ear next to the speakers. A bit more audible on the Cat because it has more frequency range. Not audible 6 feet away. And my heavily treated room is very quiet so if there were noise it would be eaay to hear.
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hifiaudio2
Registered: 12/23/11
Posts: 131
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| Posted 05/10/12 at 10:04 AM | Reply with quote #6 |
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I would like to revisit this question before I pull the trigger. I, too will have a VERY quiet room with full clips, double dywall, Green glue walls and a full Quest acoustical treatment. In my current room that was a bit more open to other sounds in the house and outdoors because of no special walls, but was treated fairly well with GIK treatments, I could hear the faint hiss from the Submersive from maybe 8-10 feet away. I do think I can hear one of my Submersives more than the other one. I worry that once my new room is super quiet and I add three Cat 12s to the mix I could start to hear these over the noise floor. Can anyone comment as to whether that may be a legitimate worry? And is it dependent on if the Cats and subs amps are turned up more vs the volume control on the preamp being higher/lower? |
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chayut
Registered: 07/10/11
Posts: 63
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| Posted 05/10/12 at 10:13 AM | Reply with quote #7 |
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hifiaudio2...
did you use all XLR connection with the Submersives?
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gpburns
Registered: 07/18/09
Posts: 207
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| Posted 05/10/12 at 10:25 AM | Reply with quote #8 |
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I have 9 seatons in my HT - dedicated room - low noise floor
4 sparks within 6 feet (surrounds)
XLR connection
Non issue - only audible if press ear close to speakers
I do have some noise out of one my Cat woofers
which is mechanical - just been waiting for Mark to replace
(Long time)
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audioguy
Registered: 05/24/09
Posts: 529
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| Posted 05/10/12 at 11:11 AM | Reply with quote #9 |
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Quote: Originally Posted by hifiaudio2I would like to revisit this question before I pull the trigger. I, too will have a VERY quiet room with full clips, double dywall, Green glue walls and a full Quest acoustical treatment. In my current room that was a bit more open to other sounds in the house and outdoors because of no special walls, but was treated fairly well with GIK treatments, I could hear the faint hiss from the Submersive from maybe 8-10 feet away. I do think I can hear one of my Submersives more than the other one. I worry that once my new room is super quiet and I add three Cat 12s to the mix I could start to hear these over the noise floor. Can anyone comment as to whether that may be a legitimate worry? And is it dependent on if the Cats and subs amps are turned up more vs the volume control on the preamp being higher/lower?
Before I responded to this, I went to my (dedicated and very quiet) theater, turned on all 11 Seaton speakers and no noise!! Unless I stick my ear up next to the tweeter and then a VERY VERY small amount of noise.
The only noise in my room comes from the fan in my power conditioner which I can hear at the LP but once any musc starts, it plays no role !!
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hifiaudio2
Registered: 12/23/11
Posts: 131
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| Posted 05/10/12 at 11:30 AM | Reply with quote #10 |
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Ok great! thanks!
Chayut - yep all XLRs from my Integra 80.2
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Mark_Seaton
Moderator
Registered: 05/29/07
Posts: 1,490
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| Posted 05/10/12 at 11:42 AM | Reply with quote #11 |
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Quote: Originally Posted by hifiaudio2I would like to revisit this question before I pull the trigger. I, too will have a VERY quiet room with full clips, double dywall, Green glue walls and a full Quest acoustical treatment. In my current room that was a bit more open to other sounds in the house and outdoors because of no special walls, but was treated fairly well with GIK treatments, I could hear the faint hiss from the Submersive from maybe 8-10 feet away. I do think I can hear one of my Submersives more than the other one. I worry that once my new room is super quiet and I add three Cat 12s to the mix I could start to hear these over the noise floor. Can anyone comment as to whether that may be a legitimate worry? And is it dependent on if the Cats and subs amps are turned up more vs the volume control on the preamp being higher/lower?
With the SubMersive HP's it's pretty much a non issue. With the Catalysts there is some very low level noise floor which is present with most any ICEpower based amplifier when combined with high efficiency speakers. We make 3 specific modifications and adjustments to the electronics and system to reduce this to be a very low audibility that is typically not heard more than 5' away in quiet rooms.
The Catalyst 12C & 8C are a little quieter than the Spark as the amplifier modules used are a slightly lower noise design. The simple test to determine the source of system noise is to compare any system noise with the noise produced with the amplifiers turned on and no XLR connection made at the amplifier. If the noise is louder than the no-connection noise, you can reduce it with gain and grounding efforts. With many of the big-brand receivers and preamps, we've found that grounding the preamp is very helpful when buzzes or hums may creep in, and is just a good practice. This applies to all products which have only 2 prong power cords, as they generally float the ground and invite ground currents with products that include safety grounds (3rd prong on the plug). Many still have a ground terminal on the back intended for a phono connection which has proven to be a very convenient means of connecting a ground wire from a screw on one of the outlets or from a ground terminal on a power strip.
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Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436 |
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Mark_Seaton
Moderator
Registered: 05/29/07
Posts: 1,490
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| Posted 05/10/12 at 11:46 AM | Reply with quote #12 |
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Quote: Originally Posted by gpburnsI have 9 seatons in my HT - dedicated room - low noise floor
4 sparks within 6 feet (surrounds)
XLR connection
Non issue - only audible if press ear close to speakers I do have some noise out of one my Cat woofers which is mechanical - just been waiting for Mark to replace (Long time)
Thank you for the input and confirmation of the lack of significant noise with your full array of speakers in the room..
The woofer issue is with a CAT-8C, for which we have been long awaiting more woofers. The last of the required parts to begin building more just arrived at our builder, and we should be able to replace the woofer in question and deliver new CAT-8Cs again in the near future.
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Mark Seaton
Seaton Sound, Inc.
sales@seatonsound.net
773-290-8436 |
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