imhififan
Responses from imhififan
| Voltage conversion of Accuphase E-5000 Converting Accuphase amps from 100v to 120v is not straightforward as the above discussion illustrates. You can never be sure that it was done correctly or to Accuphase standards ("you can use a 680Ω 3W resistor to replace fuse F1"). The above di... | |
| How to bias a tube amp with a Multimeter Measure the resistance at test points + and - with the amplifier powered off. If you cannot get any resistance readings, you cannot bias the output tubes. If this is the case, the problem may be a bad meter probe or the amplifier test point is no... | |
| Voltage conversion of Accuphase E-650 @dbxdx5 While it is not necessary to bias the power amplifier after voltage conversion, I thought it would be a good idea to record the rail and bias voltages before conversion for future reference. | |
| Voltage conversion of Accuphase E-650 @dbxdx5 Yes, switch the voltage from 100V to 120V, leave jumpers J1 and J3 unchanged. | |
| Definitive Technology Powerfield 1500 subwoofer Check out this Automatic RCA Audio Selector | |
| Audible Illusions Modulus 2C Tape Out? Unless the source is a turntable connected to the AI 2C phono input, most preamp circuits simply loop the line-level input signal to the tape output. Of course, there are exceptions to using active buffers, but I doubt that's the case with AI 2C... | |
| Voltage conversion of Accuphase A-65 or A-70 @foolishman Just wanted to let you know that I don't have any experience with A-80 voltage conversion, I'm just making recommendations based on photos and previous experience converting Accuphase amplifiers. I highly recommend using DBT to power... | |
| Voltage conversion of Accuphase A-65 or A-70 @foolishman Thanks for posting photos of Accuphase A-80. To convert the mains supply voltage from 100V to 120V, my suggestion is power up the A-80 with 100V mains, Use an AC voltmeter to measure the voltage between the yellow/brown and red/bl... | |
| luxman R-1030 8V 0.3A https://www.hilberink.nl/luxman/r1030/luxmansmr1030.pdf Page 16 https://www.amazon.com/GF680-Volts-Current-0-3A-Miniature/dp/B007XKWCTW | |
| how to run three subs from one lfe jack Rolls DA134 Line distribution amplifier SPECIFICATIONS The DA134 is a four channel RCA distribution amplifier with RCA and 1/8” inputs that can be switched from mono or stereo. The DA134 Distribution Amplifier will distribute a mono signal to eig... | |
| Magnavox 196 197 amplifier balance pot removal/bypass help please If your device same as the schematic below, you can connect a 500k resistor to each channel to replace the balance pot. Magnavox 196 re-build | |
| Parasound HCA-1000A Modifications I am assuming that TRV101 and TRV 201 are for setting the bias voltage. Yes. What is the other (TRV102 and TRV202) used? The pots for fine adjustment bias. https://www.diyaudio.com/community/threads/parasound-hca-1000a-bias-circuit | |
| Voltage conversion of Accuphase E-5000 @foolishman Sorry, I have no experience with voltage conversion with the Accuphase C-47 and PS-1250 either. I'd love to know how to do that though! If you could provide some close-up pictures of both sides of the power supply board in your thre... | |
| Can an owner's manual and schematic be found for an Electron Kinetics eagle 7a power amp The schematic https://www.diyaudio/threads/electron-kinetics-eagle-7a-amp-help. I hope you may find it useful. | |
| Image test Reduced to 600x450 |