Yamaha - DG-Stomp  [schematic]

All about modern commercial stompbox circuits from Electro Harmonix over MXR, Boss and Ibanez into the nineties.
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rcustoms
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Post by rcustoms »

round and round
yamaha stomp.jpg
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rcustoms
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Post by rcustoms »

schematics
DG-Stomp_E.pdf
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Post by snyder80 »

Hi!

Thanks for shring your detailed Information for this "oldie";)

But maybe this topic should be moved to the DSP-section, because its a digital device... :twisted:

Greetings,
snyder

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Hides-His-Eyes
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Post by Hides-His-Eyes »

2 DSPs and a GPP? Love how far we've come!
Testing, testing, won too fwee

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johnsteb
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Post by johnsteb »

Many many thanks for the yamaha DG-stomp schematics. I lost the powerpack and hesitated to buy a new one, if at all possible. I love the Stomp and always use it when on a gig so I happened to have this 15 volt AC powerunit (instead of 12 volt) but hesitated to use it, not knowing if the DG stomp would have sufficient regulation. However being a Yamaha i trusted this would be neatly taken care off. Seeing the schematics i give it a shot. Again, many many thanks!

John

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crashguitar
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Post by crashguitar »

I still use one of these as well.

I had to replace the power supply and found this one: http://www.apogeekits.com/12v_ac_power_adapter.htm. It works great.

Chad
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Post by atreidesheir »

Hides-His-Eyes wrote:2 DSPs and a GPP? Love how far we've come!
Image
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johnsteb
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Post by johnsteb »

[quote="crashguitar"]I still use one of these as well.

I had to replace the power supply and found this one: http://www.apogeekits.com/12v_ac_power_adapter.htm. It works great.

Chad
facebook.com/ablearcher[/quote

Thanks Chad,
living in Europe I needed a 220 volt supply and as I was convinced the 15 volt supply would work, I waited till the last moment before a gig to try it out...... Fortunately a bad smell warned me this was a bad idea. From the diagram I should have figured that the stabiliser is of the old type, internally dissipating all excess voltage and getting very hot in this case. Fortunately no damage was done, I ended up modifying a redundant Linksys router power-supply by removing the rectifier board. Works excellent. Thanks again.

John

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Post by Duckman »

Sorry 'bout my noobness, but what is the function of D101 and D102 @ the input opamp?
Tkx!

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