BA-3 As Preamp

[buzzforb]

No answers? Got me stumped. Got parts coming for smd shunty clone, so no worries.😀

 

[Zen Mod]

moi answered what I could

 

[buzzforb]

I like guessing and problems. Ideal learning conditions, at least for me. One more week and all GB stuff cleared. Then real fun begins, starting with proper speaks.

 

[6L6]

Speakers? Watchya thinkin'?

 

[Hikari1]

Hey guys, I am currently running a battery powered JFet BOZ and an F5. Pretty happy with it.

Should a build a BA-3 to replace the Jfet BOZ? Everybody seems pretty interested in the BA3 as a front end, can I expect a big improvement if I switch out the JfetBOZ for a BA-3 front end?

 

[buzzforb]

Altec 416 in big MLTL. Altec 288 in Iwata 290. With 416's, 10w gets you 110 db

 

[buzzforb]

Hey guys, I am currently running a battery powered JFet BOZ and an F5. Pretty happy with it.

Should a build a BA-3 to replace the Jfet BOZ? Everybody seems pretty interested in the BA3 as a front end, can I expect a big improvement if I switch out the JfetBOZ for a BA-3 front end?

Its bigger, beefier brother. Dont know how it will mingle with F5, as I am not a fan.

 

[PKI]

Buzz, how soon your speakers will be ready? (Just send me a photo of how they look I am not interested at their sound at all ;-)

 

[Zen Mod]

me neither

 

[buzzforb]

I am trying to have all this done in one month. Not cased up or pretty, but listenable.

 

[buzzforb]

me neither

thats mean. fancy word guy backed me up on the f6.....so far.

 

[PKI]

... Not cased up or pretty...

I have no idea what you are talking about ;-)

 

[Zen Mod]

send all your drekkkky Altecs to OPLDF

 

[buzzforb]

Trade ya for unobtanium😀

 

[Zen Mod]

naah

Pa gave me two dozens , just to keep me mouth shut , at least for a while



(just joking for two dozens ; however he gave me more than I deserve ........ so it must be some Voodoo agenda )

 

[buzzforb]

Sweet. Have fun. I guess these really are the pinnacle of transistors, at least for now.

 

[generg]

24 sceondaries should yeild 34 rails with this such small current draw. THe diodes are 9.1V and beefy part #4739, 4.7K should yield 7mA, TOshibas are definite waste, but what I had. Pinout is GDS. It should work. Only inner rectdiodes are getting hot. Makes absolutely no sense. IT is PSU from Zen line stage article. BAsic cap mulitplier.

I looked at your circuit, the board layout and the picture, I see no fault either!

I add the picture of the Aleph P circuit and the picture of my favorite PSU for universal purpose in pre amps....

mind in the negative branch of the 7915 the last cap is with wrong polarity, + should go down, not up!

 

[buzzforb]

thanks Generg.

 

[buzzforb]

almost there.

 

[buzzforb]

Success