iFixit - Answers With Device "Art Tube MP AMP"

Art Tube MP AMP: art tube preamp won't power on -- will a bad tube cause this?

Sun, 13 May 2018 13:01:27 -0700

2006 ART tube preamp

no lights come on with either phantom power or a proven 9 volt AC power source

can this be a symptom of a bad tube?

thanks!

⟐ Answer edited May 13, 2018 at 13:01 MST

Art Tube MP AMP: Porque el foco rojo de clipeo se mantiene encendido

Sun, 10 Nov 2024 20:36:28 -0700

There is no audio signal from the microphone, the pen does not spin and the red clip button remains lit, it does not turn green.

⟐ Answered November 10, 2024 at 20:36 MST

Art Tube MP AMP: Loud hum when connected to a guitar amp

Mon, 24 May 2021 03:03:30 -0700

When I insert the ART Tube MP StudioV3 preamp into my guitar’s signal path there is a loud hum and the audio signal is weak. I’ve tried different configurations but haven’t been able to get a satisfactory sound. Could it be the tube?

⟐ Commented May 24, 2021 at 3:03 MST

Art Tube MP AMP: Operational Amplifier Power Problem

Thu, 17 Jan 2019 19:26:16 -0700

I want to use the op amp as a voltage follower. The input voltage range is between 1V and 45V. I have found a few high-voltage power amplifiers on the Internet. 2142 seems to be fine. However, the datasheet says that it can be powered by a single power supply or dual power supply. VCC+ is +22V and VCC- is -22V. Then if I want a single power supply, add +44V to the positive power supply, can the negative power supply be grounded? If not, is there any other way?

I ask that the output voltage does not have to be very accurate. It is required to output 1V~45V, and the actual output can be about 1V~40V. In this way, I put the voltage of 45V to the operational amplifier as the positive power supply and the negative power supply to the ground. At the same time, it is also connected to the 45V of the same input terminal. Should it output about 43V?

I looked through many passages about it on the Internet, like Operational Amplifier Principle and Circuit and so on, but I just confused by all kinds of articles.

So if you have any good ideas, could you please share them to me?

Art Tube MP AMP: My ampilifier doesnt work or turn on?

Tue, 07 Nov 2017 10:44:34 -0700

multimeter prob+ to grnd and p- to 12v buzzer on and against not on cuircet +and- are connected with2 capacitor how?

power led is off.

⟐ Commented November 07, 2017 at 10:44 MST