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Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Yamaha DG Forum plus content from the Yahoo DG Group

Moderators: parametric, Derek, Buzzard, Saul, david.krause63

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Real-JJCale Switzerland
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Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Real-JJCale »

These amps are still fantastic soundmachines and worth to be treated well and carefully preserved (although their finish have a remarkable high quality and they're built like a tank).

I'm saying that as a tube "fetishist" who owns more than a few amps as working tools for different music styles.

My DGs are part of my amp-pool and the only ones which are able to cover all styles of music with a convincing quality (live & studio).

My dream would be a reissue (with the same built- & sound quality) of the DG 130A BUT as a stereo-version with tap-controlled Delays etc.

That would be the perfect amp for so many users...

Best regards
RJJC

P.S. strange to be the first poster here! - and many THX to David Krause for his engagement towards the DG-Users all over the world!

Don't want to be a grandstander, understand my post as an admiration for this peace of (sound-) art by Yamaha.
IMG_4606.JPG
Last edited by Real-JJCale on Tue Dec 03, 2019 6:19 pm, edited 1 time in total.
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Buzzard Denmark
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Buzzard »

Real-JJCale wrote: Tue Dec 03, 2019 11:37 am These amps are still fantastic soundmachines and worth to be treated well and carefully preserved (although their finish have a remarkable high quality and they're built like a tank).

I'm saying that as a tube "fetishist" who owns more than a few amps as working tools for different music styles.

My DGs are part of my amp-pool and the only ones which are able to cover all styles of music with a convincing quality (live & studio).

My dream would be a reissue (with the same built- & sound quality) of the DG 130A BUT as a stereo-version with tap-controlled Delays etc.

That would be the perfect amp for so many users...

Best regards
RJJC

P.S. strange to be the first poster here! - and many THX to David Krause for his engagement towards the DG-Users all over the world!

Don't want to be a grandstander, understand my post as an admiration for this peace of (sound-) art by Yamaha.
Welcome to the forum and the string section. :D

I ABSOLUTELT AGREE ((i)) DG amps look and sound great. ((i))

I have a few of them myself: DG-60FX-112 , DG-100-212 , DG-130H , DG-1000 and DG-Stomp.

David Krause has joined this forum, given free hands to continue his work here. :D ((i)) :D :clap:

Hope you'll let your voice be heard here on the forum in the future.

Best Regards
Peter
Yamaholic, Guitars, Amps and Bikes. :idea: My Guitars: http://www.yamahamusicians.com/forum/vi ... =24&t=7004 :idea:
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Real-JJCale Switzerland
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Real-JJCale »

Buzzard wrote: Tue Dec 03, 2019 4:22 pm Welcome to the forum and the string section. :D
***
Hope you'll let your voice be heard here on the forum in the future.

Best Regards
Peter
Thank you for your warm welcome, Peter !

(...and if I can share my experiences from decades and give a helping hand, I'll be there...)

Best regards
RJJC
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david.krause63 Germany
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by david.krause63 »

Great to see that this forum comes alive earlier than expected! And thanks for the kind words :)

At the moment I'm preparing the content from the old yahoo-group to get it reissued on this place. I was also able to download the DG-Stomp, AG-Stomp and UD-Stomp forums! As this gear is based on the same technology than the DG-amps and the old forums are dead I tend to include them here.

All the old threads will be available as mbox files soon. Unfortunately the export from the old yahoo groups is anything but perfect. So there is some manual editing needed before publishing them again. Mbox files can be imported into most e-mail clients. There are also some free viewers for almost any platform.

The content of the files section including all the documentation, software, patches etc. is about to be sorted for double postings and obsolete software...

So stay tuned!

David
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rambleon United States of America
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by rambleon »

I just recently joined this group. I'm glad someone salvaged the DG amp and magic stomp knowledge and files. I now have time to pull out the old guitar stuff. I have a dg 80 112, dg 100 212, a dg stomp and 2 magic stomps. The dg 100 needs the firmware update and one of the magic stomps needs to be (I want) configured for acoustic patches. I hope other users on this forum can be helpful. I'm trying to get back in to it.
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david.krause63 Germany
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by david.krause63 »

Everything you need for the firmware update is here:

viewtopic.php?t=14661

If you own a Yamaha MDF3 midi sequencer, you should use it! If not the edirol UM1 interface is the way to go...

All the other interfaces that have been tested so far lack the precise timing which is needed (at least when used with modern operating systems).

For transferring a standard MagicStomp to the acoustic version you should keep in mind, that it is not done with copying the patches to the user memory. The MagicStomp Acoustic features an automatic feedback rejection which is not available with the standard or bass firmware! So, you have to update with the acoustic firmware...

David
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Stefan Markowitz
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Stefan Markowitz »

It's nice to see that there still are contributions on this board!
I'm still using my DG amps, mainly the DG130 and the DG80.
Recently I had a small problem with the DG80: I changed the battery, which led to some presets being strangely distorted.
Foolishly I just noticed it at the sound check on stage.
Re-uploading the patches via MIDI solved the problem.

Regards,
Stefan
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david.krause63 Germany
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by david.krause63 »

Hi Stefan, nice to see you again!

Yes, that happens! You either have to be very quick in changing the battery, or you have to keep the amp switched on during the procedure! Otherwise the SRAM gets lost, as there are only two 100nF capacitors holding voltage during battery change. As the voltage drops down the SRAMs don't loose their complete memory at the same point but part by part, while the voltage decreases. I guess that is why it is partially distorted.

This behavior also shows us that there is no checksum test on RAM at startup or during operation of the amp! And yes, I sometimes repaired amps from "bad sound" with just replacing the battery and reloading the presets...

David
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Bustamelody Australia
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Bustamelody »

Hi there!

Slight problem and wondering if anyone might be able to help..

My Yamaha dg130h has stopped outputting a signal. Powers on, display is fine, but no sound.

Kind regards from Oz,

Adrian 💫
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Stefan Markowitz
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Stefan Markowitz »

Bustamelody wrote: Sun Nov 26, 2023 10:28 pm My Yamaha dg130h has stopped outputting a signal. Powers on, display is fine, but no sound.
Is there sound, when you plug the guitar straight into the Effect Return?
If there is no sound (not even softly) then the problem is in the power amp section.

Cheers,
Stefan
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david.krause63 Germany
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by david.krause63 »

The most common reason for this behavior is the "EFFECT BLEND" pot on the back of the amplifier! If it is all the way to the left and no signal is being fed into the "Effect Return" socket, nothing can be heard!

David
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Bustamelody Australia
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Bustamelody »

Thanks for the hot tips guys, unfortunately it seems like the power section is gone.
I got no sound running into the effects return.

What do I do now? Is it even repairable?

Here's hoping someone knows something 🤞🤞🤞

Adrian
D
Douglas Ireland
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Douglas »

Here's hoping someone knows something
Please provide ALL of the details of your setup including all the components in the circuit, the cabling between components and the know and switch settings.

For instance you haven't answered an earlier question you were ask:
Is there sound, when you plug the guitar straight into the Effect Return?
Nor did you comment on or confirm this statement:
The most common reason for this behavior is the "EFFECT BLEND" pot on the back of the amplifier! If it is all the way to the left and no signal is being fed into the "Effect Return" socket, nothing can be heard!
The more info you provide the easier it can be for someone to help.
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Bustamelody Australia
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Bustamelody »

Hi Douglas,

Apologies for not replying correctly. I thought I answered the 1st question when I said I wasn't getting any sound when plugged into the effects return.

The latter question I didn't answer because I guess I thought it was obvious that I'd make sure the effects know wasn't all the way to dry.

Thank you for pointing it out though, I appreciate any assistance! 🙏💫

I am running my tele guitar straight into the high or low input as usual, setting the trim as usual, then the amp is connecting to the 2 Celestion greenbacks in a jcm 800 4104 combo. Not into the input of the JCM!! - just the speakers.

The JCM needs servicing. Another story.

It has worked this way for years, and now it just faded out and now silence.

The Yamaha turns on fine, all dial and motors turn as they should, and the display is also fine.

One of the chickenhead knobs cracked and fell off. Maybe that's it 🤣
D
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Re: Yamaha DG 80 (A) / DG 100 (A)/ DG 130 (A)

Unread post by Douglas »

Certainly no need to apologize.
The latter question I didn't answer because I guess I thought it was obvious that I'd make sure the effects know wasn't all the way to dry.
I know what you mean. I certainly didn't mean to come across as questioning your abilities.

Hopefully you would agree that no one the forum can know for sure WHAT you did unless you actually tell us.

Troubleshooting is hard enough when you do knows the facts. The last thing I want to do is 'assume' you did something and then find out later you didn't.

For me it's true, and I think it is for others, our questions are ONLY meant to confirm what steps you have, or have not, taken so we can cross those things off the list of possibilities. They don't imply or suggest that you havent' done or haven't considered them.

My approach is to:

1. make a list of ALL possibilities - even ones that seem improbable or impossible
2. prioritize/order the list as to which things to check first and what to check last.
That order usually takes into account how easy it is to check something - those
go first on the list because it takes little time to rule them out.
3. examine each item on the list to see if it is the culprit.
4. when I rule an item out I move it to the bottom of the list with a big X and note
WHY I ruled it out.

When I ask about the BLEND knob it was only to confirm if you had checked that. One replier mentioned it as a possibility but I noted you didn't confirm if you had checked that or not. Since it was simple to just ask you rather than make an assumption I ask you.

Simple as that. The fact is, though I still find it ackward asking a kind of 'Doh' question because it can come across as a put-down rather than the sincere question intended.
It has worked this way for years, and now it just faded out and now silence.

The Yamaha turns on fine, all dial and motors turn as they should, and the display is also fine.
Those two statements, by themselves, suggest that something is actually broken as opposed to being configured wrong.

So if 'knob twiddling' doesn't help you probably need to get an expert to look at it.

I apologize if my questions/comments came across as demeaning.
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