Ken Longfield
Ken Longfield
@ken-longfield
2 weeks ago
1,458 posts

I have a Fender electric guitar amp for the electric guitar I made. I experimented with it on the clean channel with one of my dulcimers but didn't like it as much as with the acoustic amp. Once you get into electronics and amplification you have a whole new group of rabbit holes to explore.

Ken

"The dulcimer sings a sweet song."

Lilley Pad
Lilley Pad
@lilley-pad
2 weeks ago
106 posts

Hi Ken sorry it took so long to get back to you I got caught up in my ukulele experiment. thanks  for the tip on the Xvive U2 Digital Wireless Guitar System. I just picked up one great invention the one thing I really like about it is that you can turn it on and off right there from the instrument so you don't get that big pop when you unplug the cord also I just discovered not too long ago that there's a difference between an electric guitar amp and an acoustic amp. Sometimes it's learning experience stuff can be expensive. The original AMP I got was an electric guitar amp I didn't know any better, luckily the guy that I got the amp from let me trade it in for an acoustic amp. I don't know if there's really any difference but I just go by what I hear and keep my fingers crossed that I'm going in the right direction. Speaking of the ukulele experience there is a guy there that plays an electric Bass and he brought in a little teeny mini amp he said it cost about $30 it's only about 5 Watts but it's adequate for just raising the volume for practicing  

Wally Venable
Wally Venable
@wally-venable
one month ago
174 posts

If there is no hum when the cable is plugged into the instrument and the amplifier, there is no problem. Without the instrument, the cable is acting as an antenna, sending a 60Hz signal to the amplifier input. This is a common issue with lots of electrical measuring equipment and audio gear.

If you Google "how should you connect a guitar to an amplifier?" you will see that you are supposed to plug the cable into the guitar first, and then plug the cable into the amplifier before turning on the power.

In some cases, a bad cable can cause the same thing, but that probably isn't the issue.

-----------------------

Step-by-Step Connection Guide

  • Turn down volumes: Turn the volume knob on your guitar and the master volume on your amplifier all the way down.

  • Power off the amp: Make sure the amplifier's power switch is completely off.

  • Plug into the guitar: Take one end of your 1/4-inch instrument cable and push it firmly into the output jack on your guitar until it clicks in.

  • Plug into the amplifier: Take the other end of the cable and plug it into the input jack (labeled "Input") on your amplifier.

  • Power on the amplifier: Turn on the amplifier's power switch.
Ken Longfield
Ken Longfield
@ken-longfield
one month ago
1,458 posts

RF or radio frequency interference is caused by unwanted external signals or electrical energy. It can be from items I mentioned below and also by bad shielding in the cable.

My son, a professional musician who plays guitar, uses these in small venues. He is very pleased with them. A major problem with wireless systems is interference from other devices that may be on the same frequency. Older devices are more prone to this than new ones due to the changes by the FCC in frequency usage and allocation.

Ken

"The dulcimer sings a sweet song."

Lilley Pad
Lilley Pad
@lilley-pad
one month ago
106 posts

If I do not have a cable connected to the amplifier at all then the amplifier doesn't hum but if I plug in the cable to the amplifier and the other end is not plugged into the instrument I get that home I don't believe I get the hum if it's plugged into the amplifier and the instrument. Oh Ken what is a RF interference

Also

Does anyone know anything about a device that you can plug into your instrument and then the other end goes to the amplifier? I think it's called some kind of transmitter(s)  . It looks like you plug in the transmitter into the instrument and then a receiver into the amplifier. That way You don't need a cord, however there's something about frequencies not sure what that has to do with anything but apparently you need to take that into consideration when purchasing these units anybody out there have an idea on  a good brand is to buy and can explain this thing about frequencies thanks again 

Ken Longfield
Ken Longfield
@ken-longfield
one month ago
1,458 posts

First question: Did you have it plugged into your dulcimer before plugging the cable into the amp? Second question: Does the hum also happen without the cable plugged in? Generally there are two reasons for a hum; a ground fault or RF interference. If the amp has a three prong plug and is plugged into a grounded outlet there shouldn't be a hum. If there is a hum, it could be the cable, a ground problem with amps wiring, or RF interference. If it is RF interference look for a florescent light nearby or something with a motor (refrigerator, fan, air conditioner, etc.) If that is the case try moving the amplifier away from that source of interference. This can also happen if one of those items is plugged into the same outlet or circuit as the amp.

Ken

"The dulcimer sings a new song."

Lilley Pad
Lilley Pad
@lilley-pad
one month ago
106 posts

Oh I forgot it's a relatively modern amplifier it's not a tube type it's digital 

Lilley Pad
Lilley Pad
@lilley-pad
one month ago
106 posts

Well I just bought a new toy. And I have a question. I I bought a used amp, I've never had an amp before so the question is.  I have the amp turned on low volume and when I plug in a cord it hums like crazy even though the other end of the court is not connected to an instrument is that normal ? If the court is not plugged into the amp at all there's no hump it's only when I plug in the cord  ( Thanks Kids)