imhififan
Responses from imhififan
| Voltage conversion of Accuphase E-5000 @foolishman Thank you for the photo. I think the voltage conversion can be done in the PCB on the left, can you post an image of the front and back of that PCB? | |
| Modifying a Coincident Dynamo Mk1 https://ibb.co/R7YJVdg I can't tell from the picture above whether the two 47uF 400V capacitors are connected in parallel or in series. I could be wrong, but it looks like the two large 1000uF 315V capacitors are in series with a 100KΩ balanci... | |
| Voltage conversion of Accuphase E-5000 I have successfully converted the E-700 from 100v to 120v Great! You're most welcome, glad I could help. I turned the amplifier on with nearly 100VAC and confirmed 2kΩ works... Meanwhile, also I have started discussions about voltage conversi... | |
| Modifying a Coincident Dynamo Mk1 If I understand their voltage ratings add up and the uF rating in this case is only half of the first caps value, being 11uF correct? Two identical capacitors connected in series will double the voltage rating and halve the capacitance value. ... | |
| Power consuption of an amplifier Some switching power supplies have a jumper on the printed circuit board between the rectifier and the filter capacitor. With the jumpers in place, the circuit will act as a voltage doubler, converting 110V to 220V. I'm not sure if the Micromega ... | |
| Voltage conversion of Accuphase E-5000 @foolishman Although U.S. mains voltage is rated at 120VAC ± 5%, in some cases household outlets may have voltages as low as 104VAC. My suggestion would be to power the amplifier with a variac set to 104VAC and see what the highest resistance in... | |
| Modifying a Coincident Dynamo Mk1 https://ibb.co/dBt4DhT | |
| Power consuption of an amplifier Some switching power supplies can convert from 110VAC to 220VAC by removing a jumper. | |
| Voltage conversion of Accuphase E-5000 in case the existing transformer is used, how should I use a resister connected in series to drop 20V? You can use a 680Ω 3W resistor to replace fuse F1. https://www.vishay.com/docs/28729/pr010203.pdf | |
| Voltage conversion of Accuphase E-5000 @foolishman Thanks for posting the E-700 pictures. To convert the main power transformer primary winding voltage from 100VAC to 120VAC, move connector K1 to K2 and K4 to K5. However, there is an auxiliary transformer in the upper right corner ... | |
| Modifying a Coincident Dynamo Mk1 The easiest way to bypass the volume pot is to move the two yellow wires from the center lug to the lugs for the blue and brown wires respectively. It will eliminate any noise caused by dirt buildup on the wiper. | |
| Power Cord for Accuphase Amplifier Audio is not a objective endeavor from a listening point of view, it has to be subjective because the hardware has too many variables when interacting with other components. You then have human hearing and brain function where no 2 people on the ... | |
| Modifying a Coincident Dynamo Mk1 No experience with Audio Note basic pot, TKD is good but expensive. If you are not using the volume control and always set it to maximum, my suggestion is to use a resistor to ground instead of the volume control potentiometer. | |
| Modifying a Coincident Dynamo Mk1 I would leave the rectifier caps alone. +1. To improve sound quality, my suggestion is change the volume control pot to a stepped attenuator like a Gold point, Khozmo or even a Eizz from Aliexpress. | |
| Modifying a Coincident Dynamo Mk1 Link to insides below. https://ibb.co/JqW6JDb |