Turntable hum/buzz

[amnstypls]

I use and recommend Tripp Lite Isobar.

 

http://www.amazon.com/Tripp-Lite-ISOBAR4ULTRA-Isobar-Protector/dp/B0000513O4/ref=sr_1_3?ie=UTF8&qid=1363492922&sr=8-3&keywords=tripp+lite

 

that one? I will order it now.

[ajxd]

Yup. But make sure you have enough outlets. And it's not a 10' cord.

[amnstypls]

there's a used one with 4 outlets and a 6 foot cord. I think that will do! thanks for the help!

[David Loyd]

Hi guys,

 

 So I seem to be having this issue. Trust me I'm not playing it very loud but the more the volume rises, the louder the hum in the speaker gets. The minute i take the needle off the record, Hum disappears. I have a Audio Technica LP120 turntable in which I am using the built in preamp and the turntable plugged directly into my reciever which is a Marantz sr5003.

 

 I've heard that the preamp for the ATLP120 is not the greatest. Could this be the problem? Should I actually have a seperate preamp  grounded into my receiver? My buddy has a spare behringer microphono pp400 he says I can have if I need it. Would this be a possible fix?

 

 Here are some links to pictures of the receiver and preamp.

 

Back of the receiver

 

http://www.google.com/imgres?imgurl=http://www.productwiki.com/upload/images/marantz_sr5003_2.jpg&imgrefurl=http://avreceivers.productwiki.com/marantz-sr5003/&h=479&w=1200&sz=320&tbnid=wywbqX4yJXyCyM:&tbnh=49&tbnw=123&zoom=1&usg=__k5PMj7vWK5tbHpSOHAlyEvGI5Uo=&docid=EdrnR1jIp7UI4M&sa=X&ei=cpjUUZ-ZM8b94AOpsYDICA&ved=0CDkQ9QEwAA&dur=357

 

The preamp my buddy has.

 

http://www.zzounds.com/item--BEHPP400

 

and lastly, if this is a solution, How do I grund it? Sorry but I'm a super novice when it comes to grounds and all things electrical.

I appreciate any help I can get in advance.

[circuit bored records]

Not really relevant to your^ problem, but I thought this might help someone. Even though it's been over a year, I thought I'd chime in with an update to the OP.

Finally found the cause of my "buzz" issue and it turns out it's the light fixtures in my house that have dimmers built in to them. The problem wasn't as noticible with the PM5004 when I upgraded but was still slightly noticabe at loud volumes especially during more quiet records. I was reading online about how certain dimmer switches that have cheaper TRAIC wiring systems are known for causing electric buzz on some audio setups. I don't have any wall dimmer switches but it took a while to click for me that a couple of the light fixtures (which are controlled by remotes) have the dimming option built in to them. It also made sense that it only happens some of the time, because more often than not I don't listen to records when my roommates are home, and their lights are on the other side of the house. A week or two ago when I was spinning records and one of them was home, it just clicked for me. I went and turned his light off and boom, no more buzzing. Was actually quite proud of myself but at the same time felt somewhat idiotic that it took me that long to diagnose the problem fully.

So if anyone is getting a buzzing sound, and has dimmers on the same circuit, check that in your troubleshooting steps and you may find that's the problem.

[xxmartinxx]

Hi guys,

 

 So I seem to be having this issue. Trust me I'm not playing it very loud but the more the volume rises, the louder the hum in the speaker gets. The minute i take the needle off the record, Hum disappears. I have a Audio Technica LP120 turntable in which I am using the built in preamp and the turntable plugged directly into my reciever which is a Marantz sr5003.

 

 I've heard that the preamp for the ATLP120 is not the greatest. Could this be the problem? Should I actually have a seperate preamp  grounded into my receiver? My buddy has a spare behringer microphono pp400 he says I can have if I need it. Would this be a possible fix?

 

 Here are some links to pictures of the receiver and preamp.

 

Back of the receiver

 

http://www.google.com/imgres?imgurl=http://www.productwiki.com/upload/images/marantz_sr5003_2.jpg&imgrefurl=http://avreceivers.productwiki.com/marantz-sr5003/&h=479&w=1200&sz=320&tbnid=wywbqX4yJXyCyM:&tbnh=49&tbnw=123&zoom=1&usg=__k5PMj7vWK5tbHpSOHAlyEvGI5Uo=&docid=EdrnR1jIp7UI4M&sa=X&ei=cpjUUZ-ZM8b94AOpsYDICA&ved=0CDkQ9QEwAA&dur=357

 

The preamp my buddy has.

 

http://www.zzounds.com/item--BEHPP400

 

and lastly, if this is a solution, How do I grund it? Sorry but I'm a super novice when it comes to grounds and all things electrical.

I appreciate any help I can get in advance.

 

 

Normally, you ground the turntable to the preamp, however, if the preamp is built in, it's likely internally grounded. 

 

If it's only doing it when the needle is on the record, it's most likely an issue with vibration being caused by the motor.  Try to isolate the turntable better and see what happens.

[David Loyd]

I've got my turntable sitting inside one of the shelves of my Entertainment centers side compartments. In other words its a tight squeeze and covered by 4 sides of wood, a cubby hole if you will. could this be the cause of my humming?

[xxmartinxx]

I doubt that would be the reason, but stranger things have happened.

[David Loyd]

Maybe I just need to buy a decent pair of floor speakers and stop using my bookshelfs as the main a turntable speakers? I tried a different, external pre amp, grounded it, and while the sound is better, it's a bit quiter as well but the buzz or hum is still there when the volume is turned up. When I say turned up I mean that on the receiver, it's in the 10 digit range with 1 being the loudest it can go. Should be earth shaking in my mind but truth is I can still have a fairly normal converstaion with someone without really raising my voice when it's that 'loud'.

Ill try some cheap isolation tricks if I get the time this weekend. Tis has truly been one frustrating problem.

[xxmartinxx]

I was actually experiencing the same thing with my turntable.  No hum until the needle hit the spinning record.  I then discovered that I was supposed to oil the bearing in the motor and lube the platter bearing every year (hadn't done it ever in the eight years of owning the turntable).  This cured two problems; hum and static (which I didn't even think about until after).  The motor vibrating was causing the hum and the static was due to the friction of the platter spinning with no lubricant. 

[David Loyd]

I was actually experiencing the same thing with my turntable.  No hum until the needle hit the spinning record.  I then discovered that I was supposed to oil the bearing in the motor and lube the platter bearing every year (hadn't done it ever in the eight years of owning the turntable).  This cured two problems; hum and static (which I didn't even think about until after).  The motor vibrating was causing the hum and the static was due to the friction of the platter spinning with no lubricant. 

I wouldn't even know where to start I'll have to look this up online and see if I can figure out how to even do that. I'd assume I wouldn't have to yet as this turntableis only 4 months old, brand new right out of the box but I could be wrong.