Question about Fender Hot Rod Deluxe Guitar Combo Amplifier

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Amp was running fine - great tone as per usual and loud. Then a large loss of volume and clarity: had to turn the amp up alot to get any volume and it sounded terrible.

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6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

danforddan1
  • 192 Answers

SOURCE: fender 100w twin amp no sound

Here is a test you can do at home for the sound. Test out the speaker. To do this you will need two alligator clips with wire about ft. long. Remove the speaker wire clips under the speaker magnet and attach the alligator clips . Take a C size battery and touch both ends of the battery. You should here a scratching sound . If you do you know your speaker is OK. Then you have a problem that needs a Technician. A good music shop should be able to give you a idea of the repair cost. Don't go to a big music change, find a small full service shop that deals with Fender. I don't think this will cost a lot. Fenders play for years, Its truly worth the bench fee. Good luck DFD , please rate me thanks

Posted on Apr 19, 2009

  • 5603 Answers

SOURCE: loud humm when the drive channel is on

I suspect the power supply has an issue. Most likely bad filter capacitors. This could cause "motorboating" where power is drawn and supply voltage collapses and then recovers repeatedly.

Time for the repair shop. The parts cost should be nominal... labor... well...

Posted on Mar 16, 2010

  • 5603 Answers

SOURCE: FM 65R plays and sounds

Also the volume will probably be lower going into the line level PA input... If the amp is shutting down for thermal reasons, driving it less might not get to the point of shutdown. The schematic shows a temp sensor that reduces and shuts down the amp if the heatsinks get to hot. Possibly you are driving the amp harder than it is intended, If it is as loud (I doubt it) driving the PA input, then I would expect it to shutdown, but you would probably have to drive it harder than your guitar because guitar levels are well below line level. The amp claims 65 watts... don't believe everything you read in spec sheets... You should be able to generate 100 Db of sound with it... The more distortion you use will drive the amp harder and heat the heatsinks faster.

Posted on May 13, 2011

reyjoshua07
  • 1157 Answers

SOURCE: There is an intermitent problem

Hi sjtdvm,

To isolate the problem try another guitar with the amp just to make sure if it's a guitar or amp issue. If the guitar is working properly you need to check the tubes to be sure that the connections are all seated into the slots completely. Sometimes the tubes will start loosing power that makes the sound fluctuate up and down. Please check the solder on the tube sockets if it has crack, often it caused variety of noise and wired sounds in the amp. Inspect the back of the amp on the tube pc board, it will reveal failing solder. You will usually find cracked solder on the tubes socket pins. And at the bottom center of the main board are two 5w resistors, usually 470 ohm or 330 ohm. Poke at them. Depending on how much use they have been played it may be a good suggestion to then replace your tube's. You will notice a big difference with newer tube. But remember the bias must be set correctly to match the new tubes so they won't over heat.

Hope it helps.

Thank you for using FixYa.

Posted on Jun 03, 2011

  • 177 Answers

SOURCE: When i turn on my amp it makes a loud beeeeeeeeeeeeeeeep.

Volume way too loud

Posted on Oct 26, 2011

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Hi,

Did you left the amp on overnight with a guitar hooked up to it?

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What is the actual watts per channel @ 8-ohms and 4-ohms on the Behringer PMP3000?


Those specs would be right - I have this same board but the amp was fried by a previous owner. I pulled the amp board out and tossed it and use the mixer now to drive an external amp. Great board. This amp is rated at 1200W "peak", bridged into an 8ohm load. That would equate to about 900W RMS bridged into 8ohm or 450 per side into 4ohm loads per side. You can't daisy chain all 4 speakers....impedance would be too low. You can run two of your 8ohm speakers per side - that results in a 4ohm load per side for the amp. That would give you amp delivery of 450W per side. Your speakers are rated to handle more than that so you're fine. For the record.....you could run one speaker per side no problem....just lower power output.

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My line 6 amp has blown. I havent used it alot and when i do use it I never turn it up very loud. I think i pugged it into a bad electrical socket. I plugged it in and turned it on and the volume shot up...


Is it potentially fixable, but probably not worth it. By the time you have paid for spares and an engineer to fix it it would be more than the amp is worth. If it is within warranty then take it back to the shop. It may well have been a fault with the amp.

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Hello, I own a hotrod deluxe. I take great care for it and never move it. Normally on the clean channel, the volume is regulated by the volume and the master. Today the amp sounded only half as loud as...


Do you turn on standby every time and wait for the tubes to heat up first? If you don't, it can severely damage the tubes.
But a common cause of this could be just old tubes. Like any other piece of technology, tubes get old. If you like to play your amp LOUD then they wear out a lot quicker. You have to replace tubes every now and then. Because I'm not there to check out your amp, I can't give you an exact answer but it sounds like that's the problem. This isn't always a bad thing. You can make the sound of your amp exponentially better with nicer, new tubes. Your amp has 12AX7 tubes. Very common tubes to use actually. I'm not sure what kind of music you play, I'm assuming mostly rock and blues. But here is a list of tubes and reviews on them.
http://thetubestore.com/12ax7review.html
This is how to replace a tube:
http://www.ehow.com/video_4438285_change-pre_amp-tubes-guitar-amps.html
Upkeep on a tube amp:
http://www.ehow.com/video_4438295_replace-tubes-guitar-amp.html
A note he doesn't make in the video is to dust out your amp. I use the compressed dust spray for the inside of computers.
So overall, stop turning up your amp to 11, make sure it's well ventilated and dust it out from time to time. Hope this helped.

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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.

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FM 65R plays and sounds great for about 5- 10 minutes then it sounds weak and distorted. If I play directly into the power amp input it sounds great again just no control for the volume and tone.


Also the volume will probably be lower going into the line level PA input... If the amp is shutting down for thermal reasons, driving it less might not get to the point of shutdown. The schematic shows a temp sensor that reduces and shuts down the amp if the heatsinks get to hot. Possibly you are driving the amp harder than it is intended, If it is as loud (I doubt it) driving the PA input, then I would expect it to shutdown, but you would probably have to drive it harder than your guitar because guitar levels are well below line level. The amp claims 65 watts... don't believe everything you read in spec sheets... You should be able to generate 100 Db of sound with it... The more distortion you use will drive the amp harder and heat the heatsinks faster.

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Fender Deluxe. The volume knob has no effect whatsoever. Volume only changes with the drive knob.


Your amp has two channels - "normal" and "drive." When you are on the normal channel, the "volume" knob controls your gain. In the "drive" channel, the drive knob controls your gain. In both channels, the "master" knob limits how loud the amp will get.

Most likely, you are on the drive channel, so the volume knob will have no effect. Try pushing the "channel select" switch. You should notice the channel indicator lamp (next to the drive knob) turn off. When it is off, you are in the normal mode. Yellow = drive, and red = "more drive."

Experiment with different settings to get a variety of tones.

To get the most out of this amp, try reading the manual, available online here:
http://www.fender.com/support/manuals/pdfs/manuals_elec/guitarpdf/Hot_Rod_Deluxe.pdf

Have fun - it's a great amp.

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When i turn on my amp it makes a loud beeeeeeeeeeeeeeeep.


Turn the volume down.
Check your gain.
That should solve it.

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Low volume on acoustic and jazz amp type


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Jazz and acoustic modes have some similarities requiring mid-range boost and some rounding. Not easy to achieve with a DSP chip that costs about US$10 to manufacture. Sorry, consider using the amp for practice but look at a more serious valve amps for live on stage

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