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6l6 ultralinear quiet

Much of this material applies to building or re-building hi-fi equipment, as well but it was originally intended for musical instrument crazies. Authored, assembled and edited by R. Keen, keen geofex. Contributors Thanks to the contributors who helped and taught me:. Hundreds of folks who taught ME stuff when I didn't know a triode from a Tri-Axis; I can't remember all of your names, and it all comes out as general knowledge now, but I appreciate it. A few names in that category stand out:.


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WATCH RELATED VIDEO: POWER TUBE COMPARISON ( 6L6GC/ EL34/ KT88 ) JJ/ EH

ProLogue One


Also, if the technique is okay, can you use it on quad output amps like a Fender Twin? And which tubes would you pull? Sometimes an amp just sounds better, even when playing it clean, if the output tubes are working a bit harder. In my opinion, this makes for a better sounding output tube. Whatever your reason, there is a right way and a wrong way to remove output tubes.

Photo 2. While this would certainly reduce the output power of the amp, two things will happen: It will unbalance the primary side load the tubes place on the transformer, and it will leave one side of the primary completely unloaded. The latter could create excessively high voltage in the winding, and thus cause arcing and transformer damage.

Bottom line: Do not remove one output tube in a two-output tube amp. Now, in an amp with four output tubes it is possible to remove two of them, but you need to know which two to remove. This also applies to amps with dual output tubes. This basically means that each half of the output stage amplifies one half of the audio signal.

If two of the output tubes are removed from the same side of the output stage, half of the signal will not be amplified and the sound will be extremely distorted.

You have a few options: remove the two outside tubes Photo 1 , remove the two inside tubes Photo 2 , remove the first and third Photo 3 , or remove the second and fourth Photo 4. I prefer any of the last three methods, because each provides a bit more cooling area between the tubes. Photo 3. This is to change the output impedance selection to reduce the speaker load by half. For example, if you are running your amp into a 16? For an 8? This is more important in Marshall-style amps, as their output transformer design seems to be, or at least is perceived to be, a bit more finicky and vulnerable.

Impedance reduction is not an option in amps without impedance selectors, such as early Fender amps, but they seem to be pretty stable and not significantly impacted by this mismatch. Photo 4. This tube-removal technique works best in amps that are fixed biased, as opposed to cathode biased.

Also, some amps have their output tubes physically arranged in asymmetrical patterns, so consult with the amp manufacturer if possible before removing any tubes. One more point: There are other ways to reduce the volume level of an amp.

One is by simply inserting an attenuation device between the amplifier and speaker. The most dangerous voltages are stored in electrolytic capacitors, even after the amp has been unplugged from the wall.

If you are unsure of this procedure, consult your local amp tech. Rig Rundowns. Riff Rundowns. Why I Built this. The Big 5. Runnin' With The Dweezil. Wong Notes. Rig Rundown Podcast. Bass Gear. Gear Awards. Gear Review Inquiry. First Looks. Review Demos. DIY Projects. Gear Galleries. Factory Tours. Forgotten Heroes. Studio Legends. Album Reviews. Pedal Projects. Recording Dojo. Amp DIY. Guitar Shop Recording Tips.

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Want the ultimate? Classic Ultralinear all-tube sound, with all the body and glory that you could ask for. But the monoblocks reach a new level of performance using a unique dual-feedback topology: Cross-coupled current feedback for superior impulse behavior and gain stability. Next a slight amount of negative feedback is used to achieve exact gain setting, low distortion, and low output impedance. This effectively cancels the negative byproducts associated with both feedback circuits. The end result utilizes all the benefits of feed-back, without all the drawbacks. Finally, the monoblocs integrate newly-designed, wide-band, low-loss, output transformers, built to handle even the most difficult speaker loads.

THD, Weber, Soldano, Tube Amp Doctor, and other companies make such devices and they function quite well. Another option is to have your.

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6l6 ultralinear quiet

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Scarborough Toronto, Canada. Reserve Menu Page - Premium Offerings! It is a place for expert users and experienced tube-o-philes, who know exactly what they want, including circuit configuration and parts they will be listening to. So here is the small or mini version to our reference 2A3i. The Mini is constructed with the very powerful and quiet 12AX7, to yield a single stage pre-amp. We'd considered using both or 6H30 tubes, but both will require a 2-stage design plus the availability of tubes is not as good as that of the 12AX7s , which wouldn't sound as direct nor realistic.

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decided to use two 6L6 beam power pentodes in a class AB1 with a center tap and also 42% ultra linear screen taps and can handle

Also, if the technique is okay, can you use it on quad output amps like a Fender Twin? And which tubes would you pull? Sometimes an amp just sounds better, even when playing it clean, if the output tubes are working a bit harder.

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Remember that this is a DIY kit. It means that YOU will have to build it yourself using assembly manual. The kit includes all electronic and mechanical parts including tubes and housing required to build a ready to work, high quality tube amplifier. It should take hours to construct and it will need soldering. You should have some tools and soldering skills. There is not included interconnects and the power cable is Japanese type, you will need a proper cable for your country.

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  1. Triptolemus

    I agree with you, thank you for an explanation. As always, all just brilliant.

  2. Volar

    Sounds it is quite tempting