Question about PreSonus TubePre Amplifier

1 Answer

Tube pre is on constant overdrive, what's wrong

When plugged in, tube pre is is overdriven, even when all knobs are all the way down

Posted by on

Ad

1 Answer

  • Level 1:

    An expert who has achieved level 1.

    Hot-Shot:

    An expert who has answered 20 questions.

    Corporal:

    An expert that hasĀ over 10 points.

    Mayor:

    An expert whose answer gotĀ voted for 2 times.

  • Contributor
  • 22 Answers

Check your controls volume mite be bad or have broken leg / or for that matter anyone of control

Posted on Dec 08, 2012

Ad

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get to try the service completely Free afterwhich it costs $6 per call and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

2 Answers

Is the Phono output on the RX4109 considered a preamp output in to a Power Amp?


The phono connection is an INPUT and it is a low impedance circuit. It is easily overdriven because the signal that goes into it is very small. You plug a record player into it. Any pre-amp connections on an audio device are in place after equalizer controls. There are no pre-amp connections on the Sherwood.

Sep 13, 2014 | Sherwood RX-4109 Stereo Receiver Black

1 Answer

Peavey 6505 plus buzz...even when all controls on zero and no guitar plugged in


Sounds like a bad power supply filter cap...the buzz you're hearing is the 60 cycles hum that filter caps reduce or (hopefully) eliminate altogether. It may also be related to the tubes but finding the bad one will require some work. Any friends have this same amp? If so, try swapping one tube at a time and see if you get lucky. If this amp is new take it back ASAP as it is a manufacturing defect.

Dec 27, 2013 | Peavey 6505+ 112 Combo Amp Combo

2 Answers

My Fender Hot Rod deluxe makes a popping noise when switching back to the clean channel.


This is because your clean channel only runs through the pre-amp section, requiring an increased volume level to match that of the volume of the drive section which is overdriven by the pre-amp circuit. my suggestion is to use lower volume level on the clean channel of the amp. To get any volume boost you may need to match the two channels you could use a signal/volume booster or overdrive pedal between your guitar and amp input, switching it off and back on when you switch back and forth between channels.

Jul 15, 2012 | Fender Hot Rod Deluxe Guitar Combo...

1 Answer

It's a 91 cavalier with the 2.2L engine and the auto ******. When going through town at 35, or even less, it will shift all the way to overdrive forcing the engine to fight. Is there something to hold...


Assuming this is equiped with the same trans that I am familiar with...
On the drivers side, just above the transmission pan, there is a two wire connection. This controls the "lock up converter." You can unplug it to disable it. You won't have overdrive, so you might want to try it out, as you can always plug it back in.

Sep 12, 2011 | Chevrolet Cavalier Cars & Trucks

1 Answer

White lines across tv screen


Without seeing the lines I can't be sure what your set has wrong, but here are a some possibilities:

If the lines are lines are confined to the top inch or two of the screen and the picture looks otherwise normal, the trouble is bad capacitors in the vertical output circuit. Fixable by replacing the bad parts.

If diagonal lines are across the entire face of the picture tube and the picture looks washed out, the trouble is often a bad capacitor on the 200-volt line to the picture tube. This may be on the main circuit board near the horizontal output transformer, or on the small circuit board plugged onto the end of the picture tube. Again, replacing the bad capacitor can fix this.

If your TV is actually an RCA, someone may have bumped a rear-panel adjustment. On the back of the TV near the bottom right are two small knobs. RCA left these adjustments exposed inside of putting them inside the set like other manufacturers. These sometimes get bumped if someone was behind the set cleaning, or if a pet got back there and hit them with a tail. The top knob adjusts focus, and the bottom knob adjusts something called G2 or screen voltage. If this gets turned up too high it can cause the faded picture and diagonal white lines. Turn the adjustment down until a black screen looks black instead of gray.

A bad picture tube or horizontal output transformer can also cause lines through the picture. If this is the case with your set, it's time for a new TV. The transformer is relatively inexpensive but labor costs aren't, and the repair bill may exceed $200. If the tube is bad, there's no point even considering repair. The tube cost alone exceeds the cost of new TV.

Hopefully your lines are easy and cheap to fix. Good luck, and thanks for using Fixya!

Jul 22, 2011 | RCA F35673MB 35" TV

1 Answer

I've had the Tonebone Plexitube since January of this year, but have only played through it a couple of times. I recently took it out to really experiment with it and get to know the pedal. Right away...


It sounds like somehow the pre-gain is very high while the volume or post-gain is very low. Try turning the volume high on the effects unit and the gain low, and don't have the amp volume too low either.

May 18, 2011 | Radial Tonebone Plexitube Effects Guitar

1 Answer

I have a crate fxt 120. I 'll be playing in the #2 overdrive channel and it will automatically fail and go to a clean sound. Although it is not entirely clean. It sounds like 2 sounds combined. A loud...


A possible problem MIGHT be marginal switch contacts on the external foot controller cable. If you are not using the foot pedal, these contacts must maintain contact to keep the same channel selected.

Sep 15, 2010 | Crate Music

1 Answer

Marshall VS65R is powered up it hums


Blown speaker NO (would not get sound at all)

Bad Reverb UNLIKELY (controls would deselect reverb and it would be out of circuit)

Bad preamp tube NO (controls have no effect)

Bad rectifier and/or filter caps LIKELY

Bad power amp POSSIBLE

Nov 29, 2009 | Marshall Mg50dfx 50-Watt Combo Guitar...

1 Answer

I replaced the shifter knob with the od button but it doesn't....


I bought a 1996 Ford Explorer. I just got my transmission rebuild and it still seems like my car not picking up the speed properly? also the overdrive light constantly blinking when I drive sometimes. Do you have an idea about what the promblem might be?

Mar 04, 2009 | 1996 Ford Explorer

Not finding what you are looking for?
PreSonus TubePre Amplifier Logo

Related Topics:

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top PreSonus Audio Players & Recorders Experts

richie46

Level 3 Expert

12962 Answers

Gil Shultz

Level 3 Expert

3368 Answers

The Knight
The Knight

Level 3 Expert

74377 Answers

Are you a PreSonus Audio Player and Recorder Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...