The Amp Garage

talbany wrote: ↑Thu Sep 16, 2021 6:12 am ... the Dumbleland 300 w ... is AC coupled ...

Does anyone here know of any facts that would support the hypothesis that the Dumbleland 300SL is "AC coupled"?

For example, the front of DL150W #008 is shown on page 90 of "A DUMBLE BOOK by Jesse Schwarz".

It could of course be that these potentiometer knobs are no longer the original ones (as is the case with the DL-150W #009, for example). On the other hand, you can also see unusual potentiometer knobs on other Dumblelands (for example DL-150W #008). "unfamiliar ... wording": The Dumbleland Special ...

Since we are on Dumbleland topic, does anyone have any more intel on this specimen? Because of the 11-step filters (similar to the filters in the later SSS 150W amplifiers) I would suspect that this is one of the later Dumbleland Special 150W amps with serial numbers above about # 010. A rear view ...

... the same X-Former set as this ... [Max: e.g. DL-150W #009] ... was his Iron of choice for whatever iteration of his 150 watt amps. Here we see the same transformers in 121 ODS ... [Max: with a "Presence" control and a 7025/7025 inverter/driver combination] ... w/ Dumbleland style PI and quite p...

@talbany: Your question was: Has anyone else here noticed that the amps ... [Max: 150W with 4/8/16 OT] .... that have Dumbleland written on them don't seem to have a Presence control? ... :shock: Do we know why that is??. My answer (in a nutshell): I don't know "why that is". But I don't find it par...

As far as I can remember, A. Dumble built the Dumbleland "DL-150VG" in the mid-eighties, at a time when - for whatever reason - the vast majority of his amplifiers were already equipped with a "Presence" control. A. Dumble built the "Dumbleland" Overdrive Special # 006 discussed in this thread at a ...

The reasons why A. Dumble initially equipped the vast majority of his amplifiers with an "Accent" or "Mid Accent" switch, and only later (late seventies/early eighties) switched to equipping them with a "Presence" control (be it as a modification or from the beginning) are not known to me.

Max, out if curiosity, do you know what the VG stands for? Unfortunately, no. ... the amps that have Dumbleland written on them don't seem to have a Presence control? (Accent switch) ... All Dumble amps I've seen so far on pictures with the word "Dumbleland" or its abbreviation written on their fro...

... Max I thought the Silver Alligator amp (Cooder amp) was the pentode amp ... "Silver Alligator amp" and "Pentode Amp" are both nicknames for the 150W Dumbleland "DL-150VG" the back of which can be seen in this photo in my last post. This is the source for this picture of the back of the Dumblela...

History of the Steel String Singer amplifier ... SSS #5: "Silver Face" Owned by Santana, 2 other owners previously, and Commissioned and owned by Steven Bruton and Eric Johnson The first of the 150w amps Peavey Transformers Skyliner Tone stack 2 tube Reverb 5 step filter positions on high and low f...

... the same X-Former set as this was his Iron of choice for whatever iteration of his 150 watt amps. ... In this generality ("whatever iteration"), this is obviously not the case. To name just a few examples: The Dumbleland "DL-150VG" (pictures in this thread) has other transformers. Alexander Dum...

...These amps would be far different and more open to flexibility than the ones you would find in his advertised/catalogue.. Perhaps we should separate the 2? ... I have already set out my personal opinion on this question here: https://ampgarage.com/forum/viewtopic.php?p=431770#p431770 Regarding t...

This is a rumor that arose from an interview by Steven Rosen with A. Dumble for a European guitarist magazine including this picture with the caption "Howard Dumble working on an amp for Ry Cooder ...": http://web.archive.org/web/20060427032233/http://homepage.mac.com/bill_jpn_morgan/Treasures/imdum...

... what makes a Dumbleland is the ... word "Dumbleland" or its abbreviation "DL" written on the front or back of a chassis that is mounted to the bottom of its head-cabinet (there are no Dumbleland combo-amps). Everything else is more or less different from specimen to specimen. Explanation by A. ...