nice work Alexw88
Could you paste the schematic of the regulated PSU for this project ?
I'm wondering why ( or should I say how ) Allen Wright used only 100 R as a grid stoppers in his FVP5 Preamp ( also 6922 tube based )
Could you paste the schematic of the regulated PSU for this project ?
I'm wondering why ( or should I say how ) Allen Wright used only 100 R as a grid stoppers in his FVP5 Preamp ( also 6922 tube based )
I don't know how anyone could recommend kitparts to anyone
They sell modified rip off's of other designs. In the past I purchased a totally worthless Jadis-JP200 and a LS9. They are a total waste of money. They sound terrible,have hum problems, and aren't designed correctly.
The LS9 is still sitting on my shelf in the garage. After hours of playing with it I am unable to get the hum to a decent level or get it to sound good. The JP200 met its fate on the shooting range. A fitting end to a piece of junk.
Lineup, do you have stock in the company by chance?
They sell modified rip off's of other designs. In the past I purchased a totally worthless Jadis-JP200 and a LS9. They are a total waste of money. They sound terrible,have hum problems, and aren't designed correctly.
The LS9 is still sitting on my shelf in the garage. After hours of playing with it I am unable to get the hum to a decent level or get it to sound good. The JP200 met its fate on the shooting range. A fitting end to a piece of junk.
Lineup, do you have stock in the company by chance?
Chinese clones
I had an e-mail from someone in HK who had built an "SP-10" on one of these board kits. The quality of the PCBs seems very good, but people who buy these are being seriously misled. I pointed this correspondent to the details of the SP-10 on the Audio Research Database, and it was immediately obvious that the valve count of the original was far higher than that of the so-called clone, and not just because the latter was missing its phono stage.
The "ARC" circuit is actually a drastically simplified version of the original: for example, most of the sophisticated power supply regulation which is typical of ARC's higher-end kit was missing, and features essential for the reliability of the circuit such as the elevated filament supplies were absent.
Alex
I had an e-mail from someone in HK who had built an "SP-10" on one of these board kits. The quality of the PCBs seems very good, but people who buy these are being seriously misled. I pointed this correspondent to the details of the SP-10 on the Audio Research Database, and it was immediately obvious that the valve count of the original was far higher than that of the so-called clone, and not just because the latter was missing its phono stage.
The "ARC" circuit is actually a drastically simplified version of the original: for example, most of the sophisticated power supply regulation which is typical of ARC's higher-end kit was missing, and features essential for the reliability of the circuit such as the elevated filament supplies were absent.
Alex
burnedfingers said:I don't know how anyone could recommend kitparts to anyone
----
Lineup, do you have stock in the company by chance?
Sorry.
I do not know anything about about kitparts
except from a quick visit to website... and yes, those circuits they sell are most probably 'ripped off' from some other designers ...
burnedfingers,
you who are more into Tubes (than this Solid State guy)
may be better suited to direct fellows
to some better, alternative Dealers of nice preamp Kits
... in this case 6922 / E88CC / 6DJ8 good easy diy kits
Regards
Lineup
Hi Alex,
You have done a fabulous job with this preamp, have seen Your website recently and I really admire Your work.
And how it's goin with the 6922 preamp in this page, is there any change or modification You have done to make it better?
i really interested to build one, but since I'm very nubie, will need to get some help from You (and also the other member of this forum), hope You don't mind.
Cheers,
Gabriel
You have done a fabulous job with this preamp, have seen Your website recently and I really admire Your work.
And how it's goin with the 6922 preamp in this page, is there any change or modification You have done to make it better?
i really interested to build one, but since I'm very nubie, will need to get some help from You (and also the other member of this forum), hope You don't mind.
Cheers,
Gabriel
e88cc
hi
The E88CC version needs 250v dc and 6,3 dc for the heater? You have 12,6v supply and the 2 heaters connected in series?
thank you
hi
The E88CC version needs 250v dc and 6,3 dc for the heater? You have 12,6v supply and the 2 heaters connected in series?
thank you
Hi guys nice preamp so i decided to make one!
First of all how many different voltage outputs is needed?
Does it need an output with the 6.3 volt for the heater as korabetsni said above? or only 250v is ok?
Finally what exactly should be the current for this PSU?
I think you can help me,
Thanks.
First of all how many different voltage outputs is needed?
Does it need an output with the 6.3 volt for the heater as korabetsni said above? or only 250v is ok?
Finally what exactly should be the current for this PSU?
I think you can help me,
Thanks.
A very nice and clean project indeed!
I have one question though, why AC coupling? You can just replace C7 and R25 a with a wire and remove R27.
BR,
Anders
I have one question though, why AC coupling? You can just replace C7 and R25 a with a wire and remove R27.
BR,
Anders
Finally someone who noticed the totally weired and unnecessary components that will only degrade performance.
Please suggest a power supply for schematics this tube/valve preamplifier with ECC88 in mosfet a solid state elements.
thank you!
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Hi, Alexw88!Finished with my simple E88CC preamp, tested with JAN Philips, Siemens and Telefunken tubes. They do measure differently, with the Siemens having the lowest distortion.
I really love the E88CC 😀 Just want to share my work :
DIY 6922 / E88CC Tube preamp
Please show schematics a power supply the this preamp with PCC88 (ECC88).
thank you and Greeting!
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Hello to the forum!It is my first time writting here and i would like to ask you about those small gold pieces which are stacked into the placket.How do they called and where i can finded them?
Hi,
I think you refer to turret tag pcb rivets. Not sure where you can find gold plated ones but ordinary ones can be had from various vendors worldwide.
Cheers, 😉
I think you refer to turret tag pcb rivets. Not sure where you can find gold plated ones but ordinary ones can be had from various vendors worldwide.
Cheers, 😉
There are several sellers of gold plated turrets over at eBay. They usally have M3 threads and nut, so you do not need the turret tool. Think I bought mine from gdaudio.
http://stores.ebay.com/gdaudio/Turret-Boards-/_i.html?_fsub=7264245011
http://stores.ebay.com/gdaudio/Turret-Boards-/_i.html?_fsub=7264245011
This project looks very interesting to me.
Im wanting to build a tube preamp and am undecided whether or not to go with EF86 or E88CC/6922.
I believe the latter is best for phono stages.
Interesting this has volume control, as alot of preamps dont, and I think this is a good option.
Main reason being, is that so many devices never put anything out at the same level, whether they have a built in preamp or not.
Im wanting to build such a preamp, but also include a built in digital FM tuner in the same unit that can be selected from the input selector.
I will update my progress here on my build 🙂
Im wanting to build a tube preamp and am undecided whether or not to go with EF86 or E88CC/6922.
I believe the latter is best for phono stages.
Interesting this has volume control, as alot of preamps dont, and I think this is a good option.
Main reason being, is that so many devices never put anything out at the same level, whether they have a built in preamp or not.
Im wanting to build such a preamp, but also include a built in digital FM tuner in the same unit that can be selected from the input selector.
I will update my progress here on my build 🙂
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