spatialking
Responses from spatialking
| Cabinet resonance problem with Marantz MM9340 amplifier @mrdecibel That hum is caused by a DC offset in the power line. It happens and only a volt or three will cause it. There are several devices made to eliminate this, as the problem is worse with toroidal transformers. If you Google "Blocking M... | |
| Cabinet resonance problem with Marantz MM9340 amplifier I believe I discovered about 90% of the problem. There is a 1KVA, medical grade, toroidal isolation transformer that isolates my system from the grid. Thus any line leakage to neutrals or grounds is blocked, eliminating any hum induced from le... | |
| Power Conditioning on the Cheap If you monitor the voltage coming in from your distribution panel, you can determine if you have line sags or over voltage. The range allowed for your line voltage is quite large, so any changes will readily show up on a voltmeter. What you ca... | |
| Decisive moments your your audio journey First time was hearing Dave Brubeck Take Five on a 45 RPM on my cousin's mono 45 record machine, around 1958. Second time was hearing big band and other good music on a real stereo. I think that was around 1962. The next time was hearing Dahlq... | |
| diagram of a B & O 1513 turntable pin outs at the female connector where cart goes in Thee should be something on the B&O website. Did you check there? | |
| Sony HAP-Z!ES won't play after disk swap I can't answer your questions but the terrible service from Sony is disgusting. I have had similar problems from Sony Tech Support in the distant past so I try to avoid their stuff nowadays. Too bad, because they do make some good stuff. | |
| High pitched whine - unless Source Direct First thing is call Marantz and see what they say. Not to make a pun, but this sounds like an oscillation problem of some kind. How long are the interconnects from the Marantz to the Cyrus amps? When you tried to reconfigure the earthing, d... | |
| Using a bridged amp at 8 ohms w/a 4 ohm speaker. I tried something similar with my Parasound 2250 V2 amp. I used the 8-4 load setting for a 8 Ohm rated subwoofer that dropped into the 6 Ohm range. The catch is, I had two subs in parallel so it now dropped into the 3 Ohm range. It didn't hur... | |
| Flagship product to build around If you are doing vinyl, then the preamp is the flagship product from which you build your system around. If you are doing digital, then the Streamer and DAC are the flagship products from which you build your system. The speakers have to be so... | |
| Cabinet resonance problem with Marantz MM9340 amplifier More info - I played the same music through the Home Theater system. It isn't the same quality of components as the Big Stereo. The deep bass was there but the muddy sound of the bass was not. Given this, I am assuming the problem is definite... | |
| How does Roon's version of radio compare to Pandora's genome project? I have found Roon to be very good in this respect. | |
| Intermittent low hum/buzz I spent several days digging out the last bit of hum from my system. Believe me, any hum at all will degrade the sound at some level. I found I had to not only tie all my electrical cords to the same Earth point but I also had to put ferrite be... | |
| Marantz receiver questions I am not familiar with either of the Marantz units but I do see cheap, crummy speaker binding posts on equipment all the time. I suggest if you are handy with electronic repairs, open it up and see if the connection problem is internal. If you... | |
| Cabinet resonance problem with Marantz MM9340 amplifier Yes, I do have some news. I took the cover off the top, discovered it was 12 gauge steel, seriously heavy stuff. A total of 12 non symmetrical screws held it in place, with a dab of some sort of Locktite like substance. There was one screw in... | |
| Cabinet resonance problem with Marantz MM9340 amplifier Lots of good information here, thanks! @4krowme I'll get to this tomorrow and check out the magnetic field. I have a small compass I can use to check the field. If the resonance is internally generated, removing the steel top plate might squis... |