organdonor amplification

Noise/buzzing/humming from tube amps

"If you’re experiencing a lot of noise coming from your tube amp, there are a number of things you should consider about tube amps that are different from solid state amplifiers.

First of all, it’s important to note that most tube amps are completely analog. Any analog circuit is going to carry noise. There are a few things that can interfere with the circuit and can cause noise such as florescent lights or dirty power. You need light to see, so this may be somewhat unavoidable. However, you can buy things like power conditioners to filter your power which will greatly reduce the noise carried into the amp via the A/C.

Another thing to think about is the interaction between your guitar and your amplifier. As stated before, analog circuits make noise. They have large transformers and other components inside. Now consider the pickups in your guitar. They’re magnets. When you walk up to your amplifier to change settings, you’re bringing the magnetic pickups closer to all those humming parts within your amp. By doing this, the pickups are going to “pick up” any noise those components are making. If the volume of your guitar is turned up, the noise is going to be amplified by the amplifier you’re plugged into. The type of pickup makes a difference as well. Humbuckers are designed to reduce the amount of noise that gets transferred to the amplifier by using two coils with opposite polarity. They aren’t perfect, but this essentially cancels out any noise that may come through. Single coil pickups, on the other hand, only have one coil, hence the name. These type of pickups are going to be much more sensitive to noise.

One last thing to consider is power and gain. If you have a 100 watt tube amp, it’s probably going to make more noise than a 15 watt tube amp. Also, if your amp is designed for high gain settings, it will most definitely make more noise than an amp designed to run cleaner. The higher you crank up the gain on your amp, the more noise it’s going to make. If you’re trying to turn up the volume, try turning down the gain and turning up the master volume. If you want more distortion and overdrive, then noise is an inherent part of obtaining that sound.”

source: http://www.sweetwater.com/sweetcare/articles/noisebuzzinghumming-from-tube-amps/

Question:

I am looking for a small clean sounding tube amp for home, like a Blues JR. Do you make something like this? Terry

Asked By: Anonymous

Answer:

Hey Terry,

Yes, I make several types of lower wattage (5 - 15 watt) amps using a pair of EL84 output tubes like the Blues Jr.  These can be made into a 1-10 /1-12 combo or head.  Some nice clean tones can be achieved with these amps especially with lower gain preamp tubes like 12AU7s or 12BH7s.  They make great platforms for pedals too. Cheers, Tim

Question:

Hi,I see the Claricon 44 500 converted to guitar amp. I am interested in finding out what you did to convert it over. I have access to one of these amps but do not have a schem nor am familiar with the 6AV6 (I am assumng only the triode half is being used???).

Asked By: Anonymous

Answer:

Hello, the 6AV6 is like one half of a 12AX7(dual triode) or a single triode.  All I did to convert it was add input jacks, speaker jacks(1/4in) and wired a grounded three prong plug basically.

The input wires had to be routed from the back jack to the front panel with holes drilled through the chassis for the new 1/4in jacks.

Also, drilled holes for speaker jacks in back of chassis.

I added 68k ohm input resistors too.

Good luck, thanks

Question:

Hey - the green tolex is very cool? Do have any more and could you re-cover my amp for me? How can I email you? Thanks, Scott

Asked By: Anonymous

Answer:

Hey Scott, yes I can do amp recovering.  I have some sea foam green on hand and can order more as needed.

organdonoramps@gmail.com

Thanks-