jea48
Responses from jea48
| Amplifier Hum - Only Amp Connected jdpawnbroker OP6 posts 12-13-2019 5:33pm Cheater plug did not make a difference. Hum was still there. Did you put a piece of tape on the bottom of the cheater plug ground tab, or over the trim screw that hold on the electrical outlet cover plat... | |
| Krell KAS amplifier hum jg2077 OP47 posts 12-13-2019 11:43am It would be easy to plug the 5.0 into one of the unused 20A outlet, as would be to move the Pre. Having to Move everything would require MUCH work. Could I use a long heavy-duty power cord plugged into one of... | |
| Krell KAS amplifier hum almarg9,233 posts 12-13-2019 12:48pm One of these is causing the additional ground loop hum. One of them, or more, has a 3 wire cord and plug. Also I would guess the way the circuit ground/signal ground is connected to the equipment grounded cha... | |
| Krell KAS amplifier hum almarg9,232 posts 12-12-2019 8:26pm Some thoughts that have occurred to me after reading through this thread:1) Since these amps are huge high powered monsters which draw lots of current and require a dedicated 20 amp line for each monobl... | |
| Krell KAS amplifier hum almarg9,232 posts 12-13-2019 9:34amjg2077 12-12-2019 8:59 pm EST:... the pre is plugged into a common 15A outlet; the amps are plugged into a dedicated 20A outlet and ALL else is unplugged. I still hear the same amount of hum.I installed a "chea... | |
| Why no “Break in” period? Measurements....... John Curl Interview Page 15/18 Also, we couldn’t use mylar capacitors, which are fairly efficient coupling capacitors. While mylars are fairly efficient from a size and cost point of view, we realized they have problems with ... | |
| Amp tripping circuit breaker. EDIT: jea483,211 posts 12-11-2019 9:03am As for the dedicated branch circuit GFCI breaker that feeds the amp. Going from what you posted it was/is high inrush current draw from the amp that was causing the 15 amp breaker at the amp to trip ... | |
| Krell KAS amplifier hum @georgehifi The Krell amps do plug directly into the wall outlets. Each amp has its own dedicated 120V 20 amp branch circuit.The " Silver Circle audio, "pure power one 5.0 power conditioner" feeds the ARC preamp and the front end equipment. All i... | |
| Krell KAS amplifier hum Al (almarg),I was hoping you would chime in at some point.Them Krell amps are pigs and are power hungry when pushed hard.I looked over what you posted and will respond tomorrow. I noticed the OP posted after you and he tried some additional tests.... | |
| Amplifier Hum - Only Amp Connected Does the hum sound like this? 120Hz hum. https://www.youtube.com/watch?v=pC4Uzt0qm2E If yes it could be failing electrolytic caps in the power supply. How old is the amp? Manufacturer and model? | |
| Krell KAS amplifier hum @ jg2077,Does the cable box connect to the audio system, in question, in any way by wire type ICs?Does the cable box 120V power cord have a 3 wire grounding type plug? If yes just for the heck of it unplug it from the wall convenience outlet tonig... | |
| Krell KAS amplifier hum georgehifi6,400 posts 12-12-2019 12:32am Also use some "earth cheater plugs" on the preamp and source/s so they get the earth from the Krells through the interconnects, this way you stop any more earth loops through the house wiring. Use of groun... | |
| Krell KAS amplifier hum georgehifi Said: If your hearing hum through the speakers.KAS Monoblocks can give hum by their very nature of being mono blocks, they should BOTH be plugged into the same heavy duty mains outlet to stop any earth loops through the house wiring. ... | |
| Krell KAS amplifier hum jg2077 OP41 posts 12-11-2019 7:52pm All was unplugged from the back of the pre, I still have "hum".I ran a ground wire from the pre power cord (plugged into the back of the power distributor) to the ground of wall outlet the power distributor is... | |
| Krell KAS amplifier hum jea48 said: You can also use a 2 wire IEC power cord if you have one instead of using your existing preamp power cord. You won’t need a ground cheater then. That won’t work..... The male ground pin on the IEC inlet on preamp would be in the way. |