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6f3 tube how to

The TAB debuted as a made-in-Japan audio vacuum tube after the absence of new domestically produced audio vacuum tubes for 35 years. This product was further improved in precision and reintroduced. Each and every TAB tube is manufactured and assembled with the utmost care using choice materials and under stringent quality control in our own plant in Japan. We remain committed to high quality and refuse compromise as we have always been. For the reintroduction of the TAB, we reviewed the parts and manufacturing processes from the ground up in order to improve precision. We produced new dies for the base and changed the product color to black.


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DIY Audio Projects Forum


Users browsing this forum: Google [Bot] , Wyncz and 13 guests. Posted: Sun Jun 19, am. Mark, roughly how much did you charge for the completed preamp in case? Judging from the specs, do you think a preamp is necessary? Technical Specification of 6F3 mini tube amp: Output power: 2. Post subject: Re: Super simple single stage tube preamp. Nice build, Mark! What is the best way to get the bias voltage down. How about a 30K plate resistor instead of the 20K one?? Posted: Sun Jun 19, pm.

I believe in this way, it would do the least "damage" to the gain and keep the plate current in check. Cheap-Jack: Not sure I'm ready for the battery yet. I have seen leds used in the cathode cct.

For now I'll stay with good old Rc. Posted: Mon Jun 20, am. Hi again, just saw the bit about the bias voltage, I'm with C-J on this. My thinking is that 4. I find that 12AU7s seem to run best with about 1. It is a more linear operational point. For small signals under about 0. Posted: Mon Jun 20, pm. I bought everything I needed at the one store is that matching component retailers??

First thing I did was to drill and prime the caes. Its now ready for painting. Rather than watch the paint dry I started on the cct.

Tonight I finished the brd. No 12V for the heaters! That's fine I left off one very short link regulator to 10uf poly. Matt thought the values were right as they were but I had bought the parts based on the suggestion to raise Rp and lower Rc.

What do you think Matt? I had built the k load R output R in before you told me it is not required Matt. I also added some better snubbing caps. So all in all a much better build. Here is an interesting observation. On swapping the tube out I got V on both plates. I would say the tube has a real problem with one of the triodes. Big question only I can answer "what colour to spray the case"? I don't know why anyone bothers with these low gain linestages , let alone ones with feedback.

I personally find that an AVC switched volume control is all that's required , I have used Goldpoints , Alps pots , switched attenuators and also constant impedence attenuators and the Intact AVC blows them all away with or without a gain stage the other side BDA. I personally find that an AVC switched volume control is all that's required , I have used Goldpoints , Alps pots , switched attenuators and also constant impedence attenuators and the Intact AVC blows them all away with or without a gain stage the other side.

It uses a tapped choke to provide attenuation , similar in operation to a variac. An AVC can also be configured to provide gain by connecting the input to one of the upper taps. A typical CD player output stage should have a low enough impedence to drive an AVC in this configuration. I am very surprised to hear you don't have sufficient gain of your SET amp for reasonable volume , it could be that your speakers are not a good match.

With SET amps the envelope should be within the first 'magic watt' , with the rest just there for peaks. It's the 'chocolate sauce factor' as some put it , if you're pushing the amp harder or into clipping to get the volume you require or maybe it's designed for use with an active linestage?

See intactaudio. Page 5 of Previous topic Next topic. Attachment: 6F silver. It looks good but I'm suspicious of its performance. Increasing just plate resistor is also going to reduce plate current and possibly your gain , while decreasing just the cathode resistance will increase plate current and may not have any beneficial effect on gain. In either case, you will lower your cathode bias voltage. Adjust both resistances still gets the cathode bias on target, and we keep the gain and plate current healthy.

Les: thanks. I believe in this way, it would do the least "damage" to the gain and keep the plate current in check No need to blind guess. I'm not sure I would be quite so quick to adjust the bias point downward. Look at the initial analysis This circuit has significant feedback which is going to significantly reduce both gain and distortion.

With a 1. This is actually a pretty clean little stage as designed. It's not the way that I would have gone about designing a 12AU7 preamp stage but the final result is actually pretty good. This post has a file attachment.

Please login or register to access it. Only Registered Members may view attached files. I personally find that an AVC switched volume control is all that's required , I have used Goldpoints , Alps pots , switched attenuators and also constant impedence attenuators and the Intact AVC blows them all away with or without a gain stage the other side AVC??

I give up what is it. This little preamp can make it very loud with room to spare. You cannot post new topics in this forum You cannot reply to topics in this forum You cannot edit your posts in this forum You cannot delete your posts in this forum You cannot post attachments in this forum.


The new ECL805 tube substitute 6F36GV8ECL85 provides matching original box packaging

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Single-ended tube amplifier To add this product to your wish list you must Sign In or Create an account. The audiophiles think that B is a female voice representative. But our B kit circuit is the embodiment of the sound of rigidity and softness. It is not only an attentive and charming woman, but also an iron and tender prince charming. There are also rumors that the low frequency of B is not good. From an electrical point of view, the internal resistance of B is only about ohms, which shows its damping coefficient is very good. Why is the rumors so? This is depended on the quality of the power supply, time constant of the circuit design and other reasons. From the acoustic point of view, the sound of the B tube amplifier is more expressive and richer, musical sense. Our vacuum tube B kit has a unique acoustic and electrical regulatory concepts from the design to the selection of the output transformer.

Mini 6F3 Vacuum Tube Amplifier Stereo Audio Class A Single-ended Power Amp 4W×2

6f3 tube how to

This review page is supported in part by the sponsors whose ad banners are displayed below. With an impedance matching box, the 6F3 can also drive headphones. Synergy Hifi website. As indicated, it was difficult to detect a preference for a certain music type even though electronics and rock worked best. And how!

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The MP series is the most popular Canadian Musical Paradise tube amp which was first released in In , the MK2 was introduced to the market with many improvements. The enhancement process has never been stopped. Rich, Detail Sounding. Musical and natural fine sounding with tone balance and strong three-dimensional sense is its sound characteristic.

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Users browsing this forum: Google [Bot] , Wyncz and 13 guests. Posted: Sun Jun 19, am. Mark, roughly how much did you charge for the completed preamp in case? Judging from the specs, do you think a preamp is necessary? Technical Specification of 6F3 mini tube amp: Output power: 2. Post subject: Re: Super simple single stage tube preamp. Nice build, Mark!

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Here's the full story from. With the arrival of the EVO Hybrid,. The tube complement.

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LOG IN. Category: Amplifiers Budget esoterica review magazine November issue Today i will be reviewing a small 2. The APPJ-6F3 measures 5 inches wide by 4 inches deep and has a height of 4 inches, not including the protruding tubes.




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  1. Cliffton

    They were wrong, of course.