herman
Responses from herman
| Modifying to 220V operation. How to make sure? Even with the tubes removed you still have the potential to do some serious damage. If you do it wrong and plug it into 220, you could have twice the normal DC voltage in the amp. That means twice the normal DC voltage across the filter caps. In m... | |
| using a transformer to separate your gear power As usual, Sean's comments are correct. You must choose a device that is capable of delivering the current that your components require.There are some other considerations. A normal transformer is not a voltage regulator. If the input goes up or do... | |
| Rectifying bridge. Ok, my point was that the bridge itself does not determine the amplitude of the DC voltage so they are not rated in this respect. Diodes do have a voltage rating, the PRV (Peak Reverse Voltage). This is the maximum that they can handle when revers... | |
| Rectifying bridge. The peak DC output voltage of a bridge rectifier is proportional to the amplitude of the AC voltage it is fed. The AC voltage is determined by the winding ratio of the power transformer. To increase the DC voltage would require replacing the power... | |
| Who can repair a Resolution Audio CD-50??? How old is your unit? I'm not sure about this, but I believe there are laws about how long a company has to support a product after it is manufactured. I work in the medical equipment business and we have to provide support for our products for at... | |
| 12au7 versus 12au7A The letter indicates a "later and modified version which can be substituted for any previous version but not vice-versa" according to my GE tube manual. It also says the letter does not convey any information about the nature of the modification. | |
| Tube amp power rating question. The best way to determine the correct tap is to try both and listen. I know that isn't much help.The situation with preamp output and amp input impedances is similar, but in this case what you are trying to do is transfer a voltage. The standard i... | |
| Tube amp power rating question. This is impossible to understand without a basic understanding of electronic fundamentals. Excuse me if this is long winded.Power (P) is the product of voltage (V) and current (I). P = V x ICurrent is equal to voltage divided by impedance (Z). I =... | |
| have u heard Conrad Johnson's tube CD player? It is basically a DR-1 and D/A-2B in a single chassis, so the descriptions for those components describes a D/V-2B. It looks just like the DR-1. I have owned one for several years and have been very happy with it. It does not have the last degree ... | |
| Lowther Voigt Pipes are up and running I also have the EX3 (in a Lamhorn cabinet) but ended up taking off the rear can, which turns it into a DX3 except you have the newer phase plug. I then damped the panel directly behind the driver with some sonex jr. to catch the higher frequencies... | |
| Mark Levinson No. 39 act as a preamp? http://www.madrigal.com/i/manuals/No39.pdf | |
| Better magazine, Stereophile or Absolute Sound Twilo,What do you think? | |
| Talk About Static Cling... A vacuum is perfect for developing a static charge, not preventing one. Here are a couple of sites that have some info.http://www.netlabs.net/hp/echase/http://www.networkmagazine.com/article/NMG20000724S0014 | |
| Talk About Static Cling... I don't think you can measure a static charge with a scope. It will just drain away through the probe. The straps used to prevent static build up in manufacturing enviroments and by test technicians are just wire with a large value of resistance i... | |
| Words From the Wise Audioman, Those that die in debt live their lives as you suggest, spending money they don't have on things they don't need. I have spent quite a bit of money on this hobby, but what I have is paid for. You will enjoy your system a lot more if you ... |