The Amp Garage

TM, After a year of research here and building my first dumble (from a kit), I've reached a similar conclusion with regard to the versatility of this amp. It is not and should not be considered a "swiss army knife". If lot of territory (guitar sounds) has to be covered in a performance situation the...

Seems like a 33K grid stopper might help tame some of the inherent brightness of a single-coil pick-up.


Martin,

Thank-You for responding to the PM and posting that info here. Hopefully, others will benefit from your response.

-jack

Looks like a 33K grid resistor into V1a; probably helps with the pick-up loading on those older low-output strat pickups.

' Read somewhere (sorry I cannot remember specifically as so much reading has been done) that the Early 80's Grail Tone implementation was a 'strat-friendly' design. There also seem to be a number of tweaks that are 'strat-friendly'. I've personally tried the 'mid-cap', LNFB, and 'deep-switch' imple...

Not to be contentious, but isn't the 'deep' switch essentially a hi-pass filter with a -3dB point of about 60Hz and falling off from there as frequency increases; having the opposite effect of 'accentuat[ing] bas[s]...'? And, without the parallel 1M resistor more of the other frequencies would get d...

ic-racer, Thank-You for responding. Got my mods finished yesterday and have the deep switch connected per the pictures from #133 that Aaron mentioned. The most profound effect, for me, is on the Strat neck pickup. When engaged with the overdrive on, it seems to mitigate some of the excessive bass (o...

Aaron - Thank-You for sharing the layout.

The Early 80's Grail Tone schematic ([url]http://ampgarage.com/forum/download/file.php?id=3415[/url]) seems to indicate a different connection; unless I am misreading it.

Seems that some experimentation may be in order...

Hi All, I'm new to the lore of the Dumble amp and have been studying (some would say 'lurking') these forums for about 10 months now. The wealth of information is astounding and I am truly grateful for all of the expert advice shared here. Current research is for a 'scratch' build comprised of a #12...

I'd like 1 set of boards and an x-former for Dumbleator - please!