gs5556
Responses from gs5556
| Checking for crossover and driver issues That DC offset circuit itself could be at fault. Amplifiers cannot be diagnosed over the phone with non-tech customers. Don't waste your time troubleshooting, send it for warranty repair. Just to be sure, check to see if the wall receptacle is op... | |
| 10 gauge power cord. Too much power for tube amp? Power cord has nothing to do with the amp shutting down. The protection circuitry is kicking in. Don’t know how it’s wired but it usually senses overcurrent at the output stage. This can be caused by a failing power tube, a total loss of bias volt... | |
| Power Cables - Third Party or OEM It's not an engineering discussion, it's a marketing discussion. Of course an OEM will recommend their power cords and not the competition's. The oldest marketing pull is trying to convince consumers that using one brand's product (whether it's re... | |
| Can you touch the tubes? If you look through tube manuals under Installation and Application the only things stated are the socket pin counts and whether or not the tube can be mounted in any position. Since "touching the glass" is not stated (or "do not touch if they glo... | |
| McIntosh C28 transistor subs Not always. The biggest problem you run into is the surrounding circuits are tuned for the spec'd transistor (or vice versa) and a substitute that may seem the same may not work in that circuit. Trust your tech on this one -- he doesn't want to wo... | |
| Tracking down a hum. Go with the tubes first. Always keep a spare set, replace when you suspect a problem, if that fixes the problem throw the old tubes away and buy a new spare set. What you are describing, I would bet, is the 6SN7 heaters are not powering up togeth... | |
| Earth (isolated) ground vs. wall outlet ground. No. It’s almost certain to violate your local electrical code. It is to ensure that circuit breakers trips when they have to. Grounding your electrical system to more than one location can cause breakers not to trip during a fault. | |
| -20 DB Volume Measurment The preamp and amplifier do not communicate with each other. The amplifier gains the signal from the preamp and the preamp does a negative voltage gain on the signal (the volume pot reduces the voltage from the source then it’s amplified it to a l... | |
| After a long, long sleep: ML-335 Don't plug it in and turn it on. You will need to invest in a Variac. Set the Variac to 5 volts (AC) and turn on the amp and leave it at that voltage for at least six hours and then increase the voltage in 10 volt increments, with each increment a... | |
| New Aurender conductor V4 app It looks too much like the iPhone app. I don't like that it doesn't have the Play triangle on the album's song listing showing which track is currently playing. I do like the feature of changing the size of the album covers, making it much easier ... | |
| POLL About Voltage Change on Audio Equipment Anything that plugs into a wall has to have safety information on the back panel. If the unit has, for example, a multiple primary transformer that can accommodate different voltages, then all those voltages will be printed and clearly visible. Us... | |
| Why Can't Modern Tube Manufacturers Make a Proper Tube? I wouldn't necessarily generalize things. Back in the 40's, 50's and 60's tubes were in everything and were literally a dime a dozen. So maybe the tubes that are around today were just heartier than the rest and the vast majority weren't so great.... | |
| What do you hear with a better/bigger power supply and output capacitors in same amp? If you bridge two amplifiers it will be difficult to tell if the change in sound quality is from the doubled capacitance or the doubled power rating of the xfmr's. However, monoblock amplifiers themselves have no sonic advantage over a single box ... | |
| Tubes trouble? To me this sounds like a mechanical hum. First thing to check would be the screws that hold the circuit boards and transformer are snugged. Then I would call AR tech support and ask if it’s okay to remove one or all of the tubes and then power it ... | |
| Help needed with Rattle in my floorstanding speakers. Without knowing what speaker it is, I would suggest removing the grilles (if any) before going further. Some grille frames are steel or aluminum and may very well cause an audible rattle if not secured against the speaker or if the frame came loos... |