Single Ended D-Lite

[Chappy]

Has anyone ever tried making a SE D***** clone? I would like to build a lower wattage amp with versatility for home use only (around 5W).

My initial plan was to build P1 exteme, but I believe that the D***** preamp will allow more versatility. My only concern is that I can't incorporate the negative feedback loop. I'm concerned that without the feedback loop, I won't be able to get a nice clean sound.

Any thoughts/practical experience greatly appreciated.

Chappy

[Bob-I]

I tried it early on, then decided that I had a better use for the single ended amp and changed it to a Hi-Octane.

In general it didn't give that classic Dumble tone. Dumble's get their tone from an overdriven pre and clean power amp. The dirty power amp had a completley different charactor, more gritty and crunchy like an AC/DC tone, rather than a smooth OD like Robbin Ford.

After awhile I sold that amp. I just got bored with it.

[Normster]

Adding to what Bob said, there's really no need to build a 5 watt Dumble for home use. You don't need to crank it to get great tone. (Although I really do love the sound of a cranked Dumble. ) Have a listen to this clip. It was recorded by my friend Greg at conversation level, about the same volume as listening to a TV. The amp uses a 22 watt PP output.

http://www.gwillmusic.com/media/dmble3.mp3

[Chappy]

I tried it early on, then decided that I had a better use for the single ended amp and changed it to a Hi-Octane.

In general it didn't give that classic Dumble tone. Dumble's get their tone from an overdriven pre and clean power amp. The dirty power amp had a completley different charactor, more gritty and crunchy like an AC/DC tone, rather than a smooth OD like Robbin Ford.

After awhile I sold that amp. I just got bored with it.

Bob-I

Thanks for the reply. Your statement is exactly what i was afraid of. It sounds like I should just build a high gain SE amp, and then build a separate Dumble clone. Probably will be less trouble in the end.

Normster

What is the approximate B1 voltage on your 6V6 Dlite clone? Im guessing that 475V (as per the hybrid A schematic) would probably result in a short life expectancy for the tubes.

Thanks
Chappy

[Normster]

Not quite that high. I like using a 320-0-320/200mA PT. Working B+1 is about 415VDC which is well below JJ's specs for 6V6 pentode operation (500VDC).

[Chappy]

Not quite that high. I like using a 320-0-320/200mA PT. Working B+1 is about 415VDC which is well below JJ's specs for 6V6 pentode operation (500VDC).

Cool. How about old 6V6's? I have an assortment of old NOS Sylvania & RCA 6V6's. I also have some slightly used Sylvania & Tung Sol Jan 6V6 types? The GE spec sheet says 315V for 6V6GT, and the RCA says 350V for 6V6GTA. Will 400+ volts seriously effect the life of these tubes, or can they take it just as well as the JJ's?

I have an assortment of used good quality PT's. I could build this with a 335-0-335/175 or drop it down with a 250-0-250/175ma.

Sorry for all the nube questions, but I don't want to overly abuse my power tubes if it isn't necessary

Thanks
Chappy