Outlaw Audio home shop products hideout news support about
Page 7 of 8 < 1 2 3 4 5 6 7 8 >
Topic Options
#92471 - 01/22/13 02:00 PM Re: 7700 Hum [Re: XenonMan]
renov8r Offline
Desperado

Registered: 11/13/02
Posts: 336
Loc: Illinois
I once had to deal with a venue that had some decorative fountain / waterfall that was powered by a large pump. When that thing was running there so much voltage coming back to the sound system you'd swear the amp was physically dancing not just buzzing...

Maintenance guy finally got new pump and the problem went away.

Originally Posted By: XenonMan
The hair dryer example in the link above is an interesting thought. I wonder if there are some devices in your home that do a similar thing with changing voltage in a similar way. A multi-speed blender, an eco friendly refrigerator or even a heat pump that varies speed based on load could be a culprit. Since the problem seems to be related to the time of year maybe your AC or heating system is causing an issue.

Top
#92503 - 01/26/13 04:28 PM Re: 7700 Hum [Re: rubbersoul]
rubbersoul Offline
Desperado

Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
Well guys I cant think of anything in the house that is constantly running that would create this problem.
Saying that is NOT to say that I do not understand where you are coming from. A hairdryer left on , florescent lights, I even thought it could be my heater since I was having trouble with that during the week.
No dice.
Like I had written on a previous post a week on soon ago I turn on a football game. I did not change anything. As a matter of fact I was expecting to hear the HUM. I turn on my cable and there was nothing coming out of the amp. It was dead quiet.

Will keep everyone up to date.
Monday is a big day.
Wish me luck that the readings on Monday show something that the engineers at Outlaw can help.
_________________________
Outlaw 990/7700
Conrad Johnson Premier140 Tube Amplifier
Conrad Johnson 17LS MKll Pre Amp
B&W 803D2’s HTM3S DS7's
HSU Subwoofer
Mitsubishi 6800 Projector
Da-Lite Screen,
Oppo BDP93
Comcast
PS Audio DSD
Stack Variac
Kill-O-Watt
Nakamichi cables Audio 8 cables
Air-Server
Mac-Mini
ROON

Top
#92505 - 01/27/13 02:33 PM Re: 7700 Hum [Re: rubbersoul]
rubbersoul Offline
Desperado

Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
Scott e-mailed me the information I would need to take a reading with an analog Volt meter. I sent him the results today.

I had a reading of 0.5-1.

Sorry guys but I have no idea what this means or better yet how the issue is going to be resolved.
Hopefully Scott will touch base with me tomorrow.
_________________________
Outlaw 990/7700
Conrad Johnson Premier140 Tube Amplifier
Conrad Johnson 17LS MKll Pre Amp
B&W 803D2’s HTM3S DS7's
HSU Subwoofer
Mitsubishi 6800 Projector
Da-Lite Screen,
Oppo BDP93
Comcast
PS Audio DSD
Stack Variac
Kill-O-Watt
Nakamichi cables Audio 8 cables
Air-Server
Mac-Mini
ROON

Top
#92507 - 01/27/13 11:12 PM Re: 7700 Hum [Re: rubbersoul]
Keta Offline
Desperado

Registered: 12/29/02
Posts: 358
Loc: Central VA
What were you being asked to measure?

Top
#92509 - 01/28/13 02:23 PM Re: 7700 Hum [Re: rubbersoul]
rubbersoul Offline
Desperado

Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
I was testing for DC current on AC line.

XM and to all involved with this post.
Thank you all.
Scott contacted me via e-mail and said that my readings of 0.5-1 were significant levels of DC on my AC line.
Scott said that Outlaw sells DC filters that will eliminate or reduce the level of DC hum.
Cost $249.00...I was not looking to spend that money right now b/c of saving for another processor, however this seems necessary.

I looked at Outlaw product menu and I only see two products from Surge X. One lists at $449.00 and the other at $289.00. I am not sure if Scott is referring to one of these units but I intend to contact him today.
I am a little confused since I have a Furman Elite.

I have decided that before I spend that money I will in the following week take a serious look at my wiring and I will probably strip my entire system and do a re-wiring of all components.

Again Thanks for your suggestions on a not so easy problem.
_________________________
Outlaw 990/7700
Conrad Johnson Premier140 Tube Amplifier
Conrad Johnson 17LS MKll Pre Amp
B&W 803D2’s HTM3S DS7's
HSU Subwoofer
Mitsubishi 6800 Projector
Da-Lite Screen,
Oppo BDP93
Comcast
PS Audio DSD
Stack Variac
Kill-O-Watt
Nakamichi cables Audio 8 cables
Air-Server
Mac-Mini
ROON

Top
#92511 - 01/28/13 03:33 PM Re: 7700 Hum [Re: rubbersoul]
XenonMan Offline
Desperado

Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
Here is another shot in the dark. Try swapping the breaker which feeds your circuit with either a new on or a similar rated one already in use. The device inside the breaker that senses an overload could be causing some noise on the AC line. New breaker is $6 vice big bucks.
_________________________
Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner

Top
#92515 - 01/28/13 08:18 PM Re: 7700 Hum [Re: rubbersoul]
rubbersoul Offline
Desperado

Registered: 02/27/06
Posts: 383
Loc: folsom, pa.
Good thought XM.
I'll give it a try.
_________________________
Outlaw 990/7700
Conrad Johnson Premier140 Tube Amplifier
Conrad Johnson 17LS MKll Pre Amp
B&W 803D2’s HTM3S DS7's
HSU Subwoofer
Mitsubishi 6800 Projector
Da-Lite Screen,
Oppo BDP93
Comcast
PS Audio DSD
Stack Variac
Kill-O-Watt
Nakamichi cables Audio 8 cables
Air-Server
Mac-Mini
ROON

Top
#92519 - 01/30/13 11:18 AM Re: 7700 Hum [Re: rubbersoul]
XenonMan Offline
Desperado

Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
Another shot in the dark.... Borrow or buy a receptacle checker and check every outlet in your home for correct polarity. If even one is reversed it could be sending voltage to the neutral side of your house wiring and may be an easy issue to fix once found. The equipment plugged in is expecting 120 vac on the hot side of the receptacle (the smaller slot)and ground on the larger slot. If one of the wires in the house is reversed then you could be generating a voltage on the neutral lead. Essentially you could find it by reading the voltage witha multimeter, between the larger slot and the ground. There should be no voltage. If there is voltage one of the hot wires is connected to the neutral somewhere in your house. If any recent wiring was done I would start there.
_________________________
Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner

Top
#92521 - 01/30/13 07:07 PM Re: 7700 Hum [Re: rubbersoul]
EEman Offline
Desperado

Registered: 11/11/09
Posts: 514
Loc: Canton, MI
I don't see anything in the Furman docs that indicate that they have a DC block. Surge protecction and AC filtering are called out, but those are usually implemented in such a way that DC will pass. If it's in there I didn't see it advertised.

Top
#92523 - 01/31/13 03:56 PM Re: 7700 Hum [Re: rubbersoul]
XenonMan Offline
Desperado

Registered: 04/08/08
Posts: 2676
Loc: Columbus,North Carolina
Depending on which model you have, Furman has LIFT (linear filtering technology) which sounds like it would remove the noise from the AC line. An inline transformer would also remove any DC signal.
_________________________
Music system
Model 990/7500/Magnepan 1.6 QRs/Technics SL1200 MK2/Aperion S-12 Subwoofer/OWA3/Sony NS75H DVD
APC H15 Power Conditioner

TV System
Large Advent Loudspeakers/ Polk center/Monoprice surrounds/Panasonic Viera 42 inch/Onkyo HT-RC260/Sony BDP S590/Directv


Home Theater System
Onkyo PR-SC886/Outlaw 7125 Klipsch RF-82 L/R,RC-62 center, RB-35 SR/SL, BENQ HT1075, Outlaw LFM1-EX/OPPO BDP-83/Directv
Harmony ONE
Blue Jeans and Monoprice interconnects
APC H15 Power Conditioner

Top
Page 7 of 8 < 1 2 3 4 5 6 7 8 >

Who's Online
0 registered (), 53 Guests and 1 Spider online.
Key: Admin, Global Mod, Mod
Newest Members
audio123, Dustin _69c10, Dain, REP, caffeinated
8717 Registered Users
Top Posters (30 Days)
FAUguy 2
butchgo 1
Forum Stats
8,717 Registered Members
88 Forums
11,331 Topics
98,703 Posts

Most users ever online: 677 @ 09/27/24 06:41 PM