Dumble Acronyms

[GatesofDawn67]

Hi,

Being new to this forum, the extent of my knowledge of Dumble is the Over-Drive Special.

Can someone tell me what PAB and HRM stand for?

How does a Skyline EQ differ from any other tone stack that Dumble may have used?

Steve

[Anaconda1126]

PAB = Pre-Amp Boost/Bypass

HRM = Hot Rubber Monkey / Hot Rodded Marshall / Her Royal Majesty

[JimiB]

I believe the skyline is the 250KA mid pot and the .01 mid cap combo

[tele_player]

What I've wondered, being new to the Dumble-clone world... were these designations made up by Dumble, or by the Dumble-clone community?

[nickt]

What I've wondered, being new to the Dumble-clone world... were these designations made up by Dumble, or by the Dumble-clone community?

Given PAB is silk screened on the front panel that's at least one to Mr D.

[Funkalicousgroove]

Hot Rubber Monkey is a Dumble Term, as is Skyline EQ, Blues Master, Fat City, precision power section, etc.

[Rob]

Ultraphonix?

[benoit]

Ultraphoenix?

Yep.

[Structo]

I can't remember who posted this at Brown Note forum so I can't give credit due to who it was.
Here are some tone tweaks:

Skyliner tone stack (.01uf/250kA Midrange setup)
- Made the midrange more vocal and opened up the bottom end. The 250kA seems to "push" the mids out there, for a lack of a better word. I run my mids HIGH on my amp, at about 2 o'clock.

"Voice" DPDT switch (single .01uF mid cap or sum .05uf [switch to parallel .01uF with .04uF 6PS cap]
- Just switches between the stock D'Lite .05uF mid cap and the Skyliner .01uF mid cap. FWIW, mine stays in .01uF 100% of the time, even with my Strat.

330pF treble cap
- Brought the frequency knee of the treble control a little lower. High end seems a touch sweeter, particularly in OD. I like the "chirp" this value has in OD.

120pF bright cap
- I felt the 270pF was a little TOO bright, and the 120pF adds a nice sparkle that isn't overbearing. Killer on the cleans. FWIW, I have Bright on 100% of the time in Clean, but I never use it on OD

.05uF/10m pre-OD1 network (as seen on ODS-101-nonHRM schematic)
- Seemed to "round" out the OD a very slight bit. Very subtle, but nice.

Parallel 1K/5W choke replacement resistor (for about 330R net with stock 500R choke replacement)
- Increased headroom, decreased sag. Also removed a touch of nasalness only present at higher volumes.

TAD 6L6-WGCs
- Bumped up the headroom considerably. I tried SED 6L6GCs too, but these TADs are ultra-creamy. Cleans are like walking on clouds.

[Funkalicousgroove]

I believe those are all Scott Lerner Mods...........

[Structo]

Hats of to Mr. Lerner then!

[Funkalicousgroove]

well, maybe not "All" of them, some belong to mr. D as well!

[GatesofDawn67]

So the D'Lite refers to a Dumble inspired 18Watt amp and not to anything that HAD designed?

[ic-racer]

Some others:

BM = BluesMaster
PI= Phase inverter
100k Amp = 100k plate resistors in use
OD = overdrive channel
124 = Dumble #124 = de-gooped amp, reasonably well interrogated.

[Pete]

So the D'Lite refers to a Dumble inspired 18Watt amp and not to anything that HAD designed?

Correct, not HAD designed.