gs5556
Responses from gs5556
| Speaker Driver Material & The Sound of Dissimilar Materials The driver moves back and forth uniformly. It does not vibrate between two fixed points the way a guitar string or the spruce top of a cello does. Since the driver does not distort, it pushes and pulls air uniformly over the radiating surface so i... | |
| Using non-matching caps in McIntosh 2125 repair? Or will it destroy amp/burn down house? D119 is a 6.2V zener. Do not put a zener for D301 -- it’s not a zener, its function is to rectify the 5.6VAC to the base of Q301 (smoothed out by C301). The diode across C118 on the solder side is doing nothing that I can see, unless that cap is s... | |
| Using non-matching caps in McIntosh 2125 repair? Or will it destroy amp/burn down house? You can find the schematic on line. The 2200uF capacitors C307 and C308 are there to provide transient suppression. In that circuit, there is about a 2 second charging time to bring the voltage up to where it can saturate transistor Q301 to energi... | |
| Direction of aftermarket fuses (only for believers!) Took a look at hi-fi tuning measurements and they are meaningless. The data presented indicates the measuring instrument has a resolution of 0.001 milli ohm. The readings shows an average of 40 micro ohm difference in each direction. That is the ... | |
| sound wave speed and other ways they behave/react. Wouldn't the increase in humidity nearer the floor speed it back up? (Speed of sound is not just temperature dependent) | |
| 110 (or 120) vs 220 For an amplifier to be designed to run on either 120 or 240 it must have two fuses, one for the hot and one for the neutral. When it is running on 120, the fuse on the neutral is just dead weight and does nothing but provide continuity. When it's ... | |
| 110 (or 120) vs 220 Possibly. At 240 volts half the current is drawn through the wiring and that can result in less power line noise in and out of the amplifier. We pay a lot of money in power cords to do just that. Speaking of which, you can’t use the standard 5-15 ... | |
| Upgrading tubes I would start with the 12AX7. Usually, rolling the input driver tube has little if any affect on the sound. You can try the reissue Mullard or Tung-Sol gold pins, which cost about $30 from Upscale Audio for the platinum grade (I use that Mullard i... | |
| ... how important is Damping factor in determining what amp to buy It is not important at all. It is just another way of expressing the amplifier’s output impedance.Most SS amps have an output impedance of 0.04 ohms, which is a DF of 200 or 8 divided by 0.04. If you include speaker cable impedance of, say, 0.1 oh... | |
| PREAMP PROBLEM--HELP! Check the receptacle for power by plugging in something else. | |
| Speaker Placement I would say the speakers are too far apart. From what you describe the speakers are 10 feet apart with you 13 feet back. I would start with the speakers 6 feet apart (centerline) pointed straight ahead with the listening position 8 feet back, t... | |
| Direction of aftermarket fuses (only for believers!) How does one know if the markings are placed in the proper orientation by the seller? If the seller manufactures the fuses and determines the correct orientation or if he buys them OEM and places them a certain way during the treatment process, th... | |
| Producing 500hz and 1.2khz and 3knz and infinite others They don't produce multiple frequencies at the same time, they reproduce a representation of multiple frequencies at any point in time.Suppose a driver is called on to reproduce a combination of 20 hz and 800 hz tones. To see how it works, first w... | |
| ESOTERIC DV50S FUSES ANYBODY KNOW WHERE IS LOCATED? The fuses are marked "ICP-N50" (F-4, F-5) and "ICP-N70" (F1 - F3).Those are IC protectors that are through-hole soldered to the board. They are short out on overcurrent and then reset. The unit does not have user service parts inside and unfor... | |
| InfiniCaps or V cap upgrades for ARC LS7 You have to consider that a pair of V-Cap TFTF 2.0 uF output coupling caps will set you back about $800. |