Zen Mod said:
Manu said:
She is part of the test setup,
Then you don't need a distortion analyzer....
😀 steenoe said:
Where's the bunny?....imagine advertisement along those lines: "With duracell batteries, Steen's Jfet boz lasts up to 7 times longer..." 😉 😀
Nice. It wold be very interesting to hear how it mates with F4...
Vix
steenoe said:
Nice layout steen. 🙂
I didn't know I had a writing style, Thx.
- I've made the test with no 🙂D ) Output pot at output.
Good news for the masters : it works bestissimo.
I can now crank up the volume to very very (up to much too) loud level without any noticiable (hearable) distortions. Seems that there is (more than) enough gain.
Aleph 5 love to be driven by such a fine and powerfull bride.
The sound is pure magic, only.
As for further tests, obviously you prepare yourself to take over, I see. HeHe.
Waiting for your first impressions.
Manu
🙂
I am pretty excited about how this thing will sound connected to the F4, with or without bunnies😉 Especially now when Manu talks about loads of gain. I will use two such batteries in series, with a BG or similar (smallish) cap for smoothing out the DC. Manu, you are not off the hook yet😉 I am just foolin' around from the sideline😀 Back to work😉
Steen🙂
BTW did you notice the ugly blue boards on the pic??😎
Steen🙂
BTW did you notice the ugly blue boards on the pic??😎
Anyone compare this preamp to the original BOZ. I have been using the original for several years and have been quite happy with it. But if the JFET BOZ is a significant improvement, it could probably be implemented on the BOZ board with little effort.
apassgear said:Glad to see you guys are having a nice time...
I do check in every day to see how your doing
You are more than welcome, you know that😉 We have two Papa's here on the forum: Papa and Papapass 😎
Steen🙂
Me again. The proto is up and running, and I beleive this is the ugliest proto I ever made😀 Call me Lucky Luke if you wish, 3 hours (including visitors along the way😀 , took at least an hour to get rid of .....😉 ) It sounds pretty good though! Actually I am quite surprised! No fine-tuning at all, I simply adjusted the input trimpots to half value and hoped for the best😉 It really rocks the F4 to clipping....he-he I didnt count on that but nonetheless... The sound is better than expected. The supply is simply a 330uF Black Gate for feeding each channel. Since the original sch. doesnt have any decoup between the channels, I though it would be best to feed each channel from its own cap...pheeeew The batteries are working out extremely well indeed. With no signal and the volume at full throttle, I can hear no hum/noise whatsoever with the ear right next to the effecient Fostex 166's
That was even less expected. Battery supply rules
Pheeeew again I am off to some more listening🙂 (and finetuning along the way!!)
Have a look, ya slow bunch......
Steen😎
Edit BTW the album on the pic comes highly recommended from yours truly! Soft listening for the hard guy's! Even the girlies like it!!
That was even less expected. Battery supply rules Pheeeew again I am off to some more listening🙂 (and finetuning along the way!!)Have a look, ya slow bunch......
Steen😎
Edit BTW the album on the pic comes highly recommended from yours truly! Soft listening for the hard guy's! Even the girlies like it!!
Attachments
I followed this post, and it's looking very promishing !!!.
Steenoe, i would be very pleased, if you could post your'e setup including the connection of the volume-regulation, and the size of that.
...
Well, it's not that i got the time right now (finishing up my pearl/dac/switch/psu enclosure's). But i allways have the problem, with 'a little too little gain' - So this could very well be my next project.
😕
Jesper
Steenoe, i would be very pleased, if you could post your'e setup including the connection of the volume-regulation, and the size of that.
...Well, it's not that i got the time right now (finishing up my pearl/dac/switch/psu enclosure's). But i allways have the problem, with 'a little too little gain' - So this could very well be my next project.
😕
Jesper
Steen is the man! Is this the robust preamp Mr. Pass promised? R Cray is my man too! Battery ps is the way to go with a simple circuit like this. Parallel a couple more and it should last a lifetime🙂
Steen: lucky luke is an slow motion artist compare to you. Guiness book of record candidate? May be?
OK, F4+JfET BOZ will be my next Niravana.
Don't forget : with this pre fine tuning is part of the game.
BTW : I confirm, proto is Uglyssimo. 🙂
Manu
OK, F4+JfET BOZ will be my next Niravana.
Don't forget : with this pre fine tuning is part of the game.
BTW : I confirm, proto is Uglyssimo. 🙂
Manu
I have no idea, but robust it is indeed! Man this little thing rocks the place to no end. Its even more powerfull then the NS10Blues said:
Me surprised to no end!!!!I might even consider to go dualmono, using 4 batteries😀 I am blasted off my chair😉 Build one and listen for yourself! There is not even the slightest noise at full throttle!! Takes an hour to solder this thing together🙄
lykkedk, the pot is a 10k logpot at the input of the preamp! You are more than welcome to have a look (and listen) for yourself.
Ohh, the battery holder is there to keep them from bouncing around...........He-he
Steen 🙂
NICd or NiMh
whatever combination ;say one 12V/4Ah plus one 6V/4Ah in series ; or two twelves ; or yourfavenumber of single cells ;
charger - LM317 in CCS mode - Icharge set to 1/50 to 1/100 of declared current capacity , so there is no need for any schmanzy elektor like processor based clever circuit - you can leave it on for good,and switching it off only when you listen da muzak
I know that........... I've run Quad 33 for 3 yrs that way ,with one Yuasa 12V/7Ah
oh boy,how clever I am!!
whatever combination ;say one 12V/4Ah plus one 6V/4Ah in series ; or two twelves ; or yourfavenumber of single cells ;
charger - LM317 in CCS mode - Icharge set to 1/50 to 1/100 of declared current capacity , so there is no need for any schmanzy elektor like processor based clever circuit - you can leave it on for good,and switching it off only when you listen da muzak
I know that........... I've run Quad 33 for 3 yrs that way ,with one Yuasa 12V/7Ah
oh boy,how clever I am!!
...will the commercial version come with a roll of battery holder?
Steen, Would you say that this compares favorably with others - the X-Bosoz in particular. I know it is still early... but it took you long enuff to get one together
edit:
--or look for discounted/obsolete/new cordless drill packs at the home center😉
or
like this
Steen, I had the same impression listening this afternoon to shostakovich cello concerto with Natalia Gutmann.steenoe said:I have no idea, but robust it is indeed! Man this little thing rocks the place to no end. Its even more powerfull then the NS10
"I am blasted off my chair" Thats the point. Nothing to ad.
Manu
mpmarino said:
ya mean -protruding on top of preamp case ,like toobz?
ya're going in right route ,kidoe!