Dumble ODS Video on YouTube

[moj067]

I thought it was a great clip showing the variations you can get at those settings. Many new builders may find it useful when checking to see if this might be their cup of tea to pursue or not.

[ic-racer]

"CONTENT" and "VOLUME" on a non-HRM? Just curious.

[UltraHookedOnPhonix]

"CONTENT" and "VOLUME" on a non-HRM? Just curious.

#155 has a "Volume" knob rather than a "Ratio" one and it is a non-HRM with shared master (by the looks of it). I can't see what the "Drive" pot is labeled as because the lettering appears to have been rubbed off.

Also, notice how similar the chassis is to the one in the YouTube video!

Here's a couple of pics:

[IMG:800:600]http://i205.photobucket.com/albums/bb17 ... 5Front.jpg[/img]

[IMG689]http://i205.photobucket.com/albums/bb17 ... 55Guts.jpg[/img]

[groovtubin]

"CONTENT" and "VOLUME" on a non-HRM? Just curious.

#155 has a "Volume" knob rather than a "Ratio" one and it is a non-HRM with shared master (by the looks of it). I can't see what the "Drive" pot is labeled as because the lettering appears to have been rubbed off.

Also, notice how similar the chassis is to the one in the YouTube video!

Here's a couple of pics:

[IMG:800:600]http://i205.photobucket.com/albums/bb17 ... 5Front.jpg[/img]

[IMG689]http://i205.photobucket.com/albums/bb17 ... 55Guts.jpg[/img]

Thanks for sharing! That amp is almost IDENTICAL in tone and esp SAG ( GOTT ALOVE IT!! yoohoo!) as the one at Steelbender.com, i KNOW the guy who owns that one, i`ll try and see which circuit it is, i blv howard still has it for some reason,( i KNOW for sure it has EL-34`s!!) that amp was used on black crowes recording a couple of yrs ago! He loaned it to them thru Chris Singh.
again, thanks for sharing, gives me something to stack mine against! jim@omega

[Grog]

Quick questions, were some built without #'s on the front panel? And was there any specific year or serial # that he may have switched to different iron and or power tube type?

[UltraHookedOnPhonix]

Thanks for sharing! That amp is almost IDENTICAL in tone and esp SAG ( GOTT ALOVE IT!! yoohoo!) as the one at Steelbender.com, i KNOW the guy who owns that one, i`ll try and see which circuit it is

Sure Jim!

Now, the “Steelbender.com” one certainly has to be HRM if one compares the look of similar amps with serial numbers in the 200’s. Seems to me that when Jason engages the PAB, there’s a huge boost. Could it be a Bluesmaster with a Mega Boost?

Please Jim, if you ever find out the circuit topology, throw us a bone!

Quick questions, were some built without #'s on the front panel? And was there any specific year or serial # that he may have switched to different iron and or power tube type?

As far as I’m aware, serial numbers starting with 140 and ending in 185 had no numbers on the front panel and I know that Alexander used Music Man iron in amps around serial numbers 140-150 and amp #167 (EL-34 non-HRM). Amps in the 200’s mainly used Magic Parts TF-130 power transformer (Fender Twin replacement), Magic Parts TF-155 choke (022699 replacement) and Magic Parts TF-170 output transformer (JCM800 & JCM900 upgrade). As far as power tubes go they would generally be EL34s with the TF-170 OT and 6L6s with amps using the TF-135 Twin-type OT.
Generally speaking, the HRM amps appeared around serial #180. I say "generally" because Dumble would mix and max features depended on how the customer wanted it so I’m sure there’s some Easter eggs around as well!
Also, many non-HRM amps were later sent to Dumble to be retrofited with the HRM upgrade.

[groovtubin]

Thanks for sharing! That amp is almost IDENTICAL in tone and esp SAG ( GOTT ALOVE IT!! yoohoo!) as the one at Steelbender.com, i KNOW the guy who owns that one, i`ll try and see which circuit it is

Sure Jim!

Now, the “Steelbender.com” one certainly has to be HRM if one compares the look of similar amps with serial numbers in the 200’s. Seems to me that when Jason engages the PAB, there’s a huge boost. Could it be a Bluesmaster with a Mega Boost?

Please Jim, if you ever find out the circuit topology, throw us a bone!

Quick questions, were some built without #'s on the front panel? And was there any specific year or serial # that he may have switched to different iron and or power tube type?

As far as I’m aware, serial numbers starting with 140 and ending in 185 had no numbers on the front panel and I know that Alexander used Music Man iron in amps around serial numbers 140-150 and amp #167 (EL-34 non-HRM). Amps in the 200’s mainly used Magic Parts TF-130 power transformer (Fender Twin replacement), Magic Parts TF-155 choke (022699 replacement) and Magic Parts TF-170 output transformer (JCM800 & JCM900 upgrade). As far as power tubes go they would generally be EL34s with the TF-170 OT and 6L6s with amps using the TF-135 Twin-type OT.
Generally speaking, the HRM amps appeared around serial #180. I say "generally" because Dumble would mix and max features depended on how the customer wanted it so I’m sure there’s some Easter eggs around as well!
Also, many non-HRM amps were later sent to Dumble to be retrofited with the HRM upgrade.

Heck YEAH! I would def LIKE ta blv that its MEGABOOST causing that cool sag! The circuit tho, it`s loose, greasy, my Personal HRM is greasy but tight as a nats butt! lol!! It almsot sounds like a Bluesmaster w/std power supply?? Its a killin no matter WHAT! Thas fo sure! It reminds me of Eric Johnson Marshall w/FUZZFACE, but MO BASS!!

jim

[BobW]

Agree, IMO, not a classis Dumble tone, but to each his own.

[Cygnus X1]

I'm thinking of building a D-clone.
Now for some really stupid questions:

1: He's quite obviously using some reverb.
Is this running through the dumbleator? <sp>

2: The footswitch-what exactly is that controlling? Is he using an overdrive pedal, or is that running the overdrive in the amp?

3: I know, I ought to do my homework, I'm just looking at these youtube clips...I thought the Dumble was based on a two channel Twin. So, it's a one channel amp?

4: What is that FET input?

Thanks in advance.

[groovtubin]

I'm thinking of building a D-clone.
Now for some really stupid questions:

1: He's quite obviously using some reverb.
Is this running through the dumbleator? <sp>

2: The footswitch-what exactly is that controlling? Is he using an overdrive pedal, or is that running the overdrive in the amp?

3: I know, I ought to do my homework, I'm just looking at these youtube clips...I thought the Dumble was based on a two channel Twin. So, it's a one channel amp?

4: What is that FET input?

Thanks in advance.

NO DATOR and NO VERB on that amp..., these amps DONT require it man!! Wanna listen to mine over phone w/NO dator and NO verb?? No joke!!!!!!!!!!!!!!!! Have you ever heard of their 3D quality??????? Its built in...

jim@Omegaamps.com

[UltraHookedOnPhonix]

I'm thinking of building a D-clone.
Now for some really stupid questions:

1: He's quite obviously using some reverb.
Is this running through the dumbleator? <sp>

2: The footswitch-what exactly is that controlling? Is he using an overdrive pedal, or is that running the overdrive in the amp?

3: I know, I ought to do my homework, I'm just looking at these youtube clips...I thought the Dumble was based on a two channel Twin. So, it's a one channel amp?

4: What is that FET input?

Thanks in advance.

1. Here’s the description from Peter who plays in the clip:

Equipment used: Dumble ODS(blackface) 100, Marshall 1x12" semi-open cabinet with Eminence Texas Heat 12" speaker. I used my go-to guitar, a Flaxwood Custom: Seymour Duncan calibrated set of minihumbuckers, neck scalloped from E1 to G3 to facilitate bending, bridge pickup 1 sentimeter further from bridge than normal to juice the tone. Close mic is Neumann U-87, ambience stereo-pair is Sennheiser. TC reverb in mixdown. No EQ was used.

So, no on the Dumblelator.

2. The footswitch on most Dumbles controls clean/overdrive select and preamp boost or “PAB”. Some Dumbles have a footswitchable mid boost as well.

That is most definitely the overdrive channel of the amp.

3. The ODS is a two-channel amp. Have a look in the files section for schematics.

4. Think of the FET input as adding a single-stage JFET amplifier before the preamp. So essentially, it’s like having your average boost pedal inside the amp. Again, have a look in the files section for a schematic.

[groovtubin]

I'm thinking of building a D-clone.
Now for some really stupid questions:

1: He's quite obviously using some reverb.
Is this running through the dumbleator? <sp>

2: The footswitch-what exactly is that controlling? Is he using an overdrive pedal, or is that running the overdrive in the amp?

3: I know, I ought to do my homework, I'm just looking at these youtube clips...I thought the Dumble was based on a two channel Twin. So, it's a one channel amp?

4: What is that FET input?

Thanks in advance.

1. Here’s the description from Peter who plays in the clip:

Equipment used: Dumble ODS(blackface) 100, Marshall 1x12" semi-open cabinet with Eminence Texas Heat 12" speaker. I used my go-to guitar, a Flaxwood Custom: Seymour Duncan calibrated set of minihumbuckers, neck scalloped from E1 to G3 to facilitate bending, bridge pickup 1 sentimeter further from bridge than normal to juice the tone. Close mic is Neumann U-87, ambience stereo-pair is Sennheiser. TC reverb in mixdown. No EQ was used.

So, no on the Dumblelator.

2. The footswitch on most Dumbles controls clean/overdrive select and preamp boost or “PAB”. Some Dumbles have a footswitchable mid boost as well.

That is most definitely the overdrive channel of the amp.

3. The ODS is a two-channel amp. Have a look in the files section for schematics.

4. Think of the FET input as adding a single-stage JFET amplifier before the preamp. So essentially, it’s like having your average boost pedal inside the amp. Again, have a look in the files section for a schematic.

Ya got me on the verb...

[UltraHookedOnPhonix]

Ya got me on the verb...

Sorry Jim, I can see how my last post came across as steam-rollin' ya. No ill intensions meant!

Hell, I don't know the difference between Miller capacitance and Miller beer!

[Cygnus X1]

Amazing!

Thanks all.
I have built several single ended amps...5E3, a couple of AX84 SEL's (tweaked and modified beyond recognition), a Spitfire (still working on getting it right).

Just how difficult would you rate the D-lite build?

[stelligan]

Amazing!

Thanks all.
I have built several single ended amps...5E3, a couple of AX84 SEL's (tweaked and modified beyond recognition), a Spitfire (still working on getting it right).

Just how difficult would you rate the D-lite build?

Cygnus X1,

Go for it. The D'Lite was my first build - and it was painless and extremely rewarding. My first was from a BrownNote kit - which made it way easy. If you are used to sourcing your own parts, you could roll your own. If it is your desire to get nearer the tone in this clip, you may want to consider whopper iron or a 100 watter(a bit more involved). Happy soldering!