2. tech-talk
  3. 1233174810

PLEASE HELP ME. NEED ADVICE

Hi,
I am selling my existing system, or parts, to downsize and also I want something very "quiet". My existing system always had a slight buzz or hum when the amp was turned on. it's a conrad johnson mf2500a ss amp and a cj 18ls pre.
My old integrated krell kav300i did the same thing. It is so annoying. Why is this? Every place I've lived it's done this, and this time I used a monster hps7000 power conditioner. Do I have to live with this or is there something that is dead quiet when turned on? Looking at a musical fidelity integrated 3.5? Please help me.
128x128jdnamn97
dweller's avatar
dweller
3,781 posts
 
My Pioneer 51FD Blu-Ray player makes a "whooshing" noise when I play DTS HD-Master music disks (Dolby True-HD, DVD and Blu-ray are very quiet).
My Toshiba A35 HD player is just plain NOISEY! (cheap casework)

I've purchased a four-bay equipment rack with a plexiglass "front door" to try and block the noise.

I'm putting the whole thing together tomorrow and will see if it works out.
jallen
502 posts
 
The ground loop theory is your best lead to follow. All of your components should ground at one location in the wall, and only one component with a ground plug, float everything else with a cheater plug. Be sure your AC receptacle has good spring tension. Many times the tension is so bad that the plug nearly falls off the wall....now that is a fire hazard. Get a Hubbell or hosp. grade AC outlet and this is contact. Jallen
swampwalker's avatar
swampwalker
5,138 posts
 
A cheater plug is accepts a 3 prong (w ground pin) but has only 2 prongs out.
Post removed 
czbbcl's avatar
czbbcl
1,752 posts
 
Is the hum coming out of the speakers while the system is turned on or is it coming form the amp when it is turned on? The cj mf series does have a slight transformer hum when turned on. I owned one and it was never bothersome..........couldn't hear it from my listening chair. If the hum is coming from your speakers while the system is powered up then try lifting the ground with a cheater plug as suggested above.
More to discover