150W Dumble Overdrive Special for sale on Ebay

[DaveBo32]

Guys,
Have you seen the Dumble on Ebay? I wish I could look inside. Man, that would be a fun build.

http://cgi.ebay.com/Dumble-Overdrive-Sp ... dZViewItem

[Normster]

I've never seen pictures of this amp before. There are some very cool features implemented. Thanks for posting the link!

[benoit]

I actually DID see this somewhere recently, I think on the 'bay. Not too long ago. Anyone else remember seeing it?

[El_Martin]

Yep. And looked up the sellers homepage.
Month ago? dunno...

Ciao
Martin

[DaveBo32]

Well here is another one overseas....

http://cgi.ebay.com/Dumble-Overdrive-Sp ... dZViewItem

Are these the real deals? I can't get over the bids these amos are getting.

[tele_player]

That one has a 'Buy It Now' of only $25K. Much cheaper than Lindley's amps. I better move some money into my PayPal account.

(no, I'm not serious!)

[ElectronAvalanche]

I wonder if the current owner of the 150W ODS is lurking on this page or maybe his tech.

Are you here Mr. A. K.?

He could bring a plethora of knowledge to this group.

Cheers,

Electron

[chris_sanford]

I actually DID see this somewhere recently, I think on the 'bay. Not too long ago. Anyone else remember seeing it?

Better pics of that amp are posted here:

http://www.ten-guitars.de/gallery.php?g=29&si=3

chris

[Ed de Jager]

I would like to know more about:
(quote)The overdrive section of the preamp is very sophisticated. The overdrive tube is a 7247 and not a 7025 as usual. This amplifier has four (staggered) pots to control the Overdrive: trigger (silver ring in the "level" location), taper (Marshall-like knob in the "level" location), level (silver ring in the "ratio" location), and ratio (Marshall-like knob in the "ratio" location).

Trigger adjusts how much of the scale of signal is fed into one triode of the overdrive tube. Level adjusts how much of the signal is fed into the other triode of the overdrive tube. Taper adjusts the scale of high frequencies in the overdrive section. Ratio adjusts how much of the overdrive circuit's signals is fed back into the preamp circuit.

Especially because the Overdrive tube is a 7247 (two different triodes with different characteristics in one tube) these four pots provide an extremely useful control of the harmonic content in order to fine-tune the overdrive circuit's voicing. (end of quote)

But then again,who doesn`t.I think i have red something like that before on a production amp but can`t remember which one that was.

[heisthl]

trigger= normally internal trim mounted externally?
taper= treble bleeder at top of Ratio pot?

[jelle]

Heistl, it can also be the HRM treble trimmer....

[JimiB]

what do you suppose that chassis was originally?

[Funkalicousgroove]

2 pcs of U channel, a piece of flat aluminum and 2 pieces of mahogany

[JimiB]

you one funny guy!