Sorry, forgot to mention. It was at 20Hz...
6N1P Bass DI - Revisited
- Thread starter CJ
- Start date
Help Support GroupDIY Audio Forum:
XL= 10/0.00135=7407 ohms at 20 hz and 10 v
7407/6.28=1180
1180/20= 60 Henries
Z ratio is 2200/200 = 11:1
Voltage Ratio = root 11 = 3.3:1
should work ,
what are the dimensions of the core?
7407/6.28=1180
1180/20= 60 Henries
Z ratio is 2200/200 = 11:1
Voltage Ratio = root 11 = 3.3:1
should work ,
what are the dimensions of the core?
Spencerleehorton
Well-known member
Is there a way to get a bit more gain out of this di using the 6N1P?
ruffrecords
Well-known member
If the cathode resistor is not bypassed then bypassing it will increase the gain a bit.
Cheers
Ian
Spencerleehorton
Well-known member
So bypass the 220R and 470uf cap?
Yes on the caps and you can disconnect the pot on the output if you have one, and do away with the two 330 resistors.
Murdock that core is bigger than the one I use so you should be all set. If you want more bass you could crack the I bars off and remove the paper gap but you have to clean the surfaces before reassembly otherwise you end up worse off than if you left it alone.
Murdock that core is bigger than the one I use so you should be all set. If you want more bass you could crack the I bars off and remove the paper gap but you have to clean the surfaces before reassembly otherwise you end up worse off than if you left it alone.
ruffrecords
Well-known member
If the 470uF is already across the 220R then it is already fully bypassed. No more gain to be had I am afraid.
What are the chances of disassembling Cinemag OT lams varnished after the core was stacked? I have one with 50Ni/50Fe lams having shorted primary, the other has butt stacked iron core with the same windings but i prefer 50Ni sound for this project.
Yes, i connected it between anode and ground, protecting psu and fuse
Last edited:
Depends on the varnish, might be air dry epoxy which would be tough.
Steel is a lot more tolerant of a little bending, nickel not so much. 50/50 you might have a shot, the first few lams are tough but once you get room for a knife,it gets pretty easy if you keep it hot.
50/50 lams are usually 0.014" thick which is tougher than power XFMR 0.019" non grain lams.
Steel is a lot more tolerant of a little bending, nickel not so much. 50/50 you might have a shot, the first few lams are tough but once you get room for a knife,it gets pretty easy if you keep it hot.
50/50 lams are usually 0.014" thick which is tougher than power XFMR 0.019" non grain lams.
Egor Reshetnikov
Member
- Joined
- Feb 26, 2020
- Messages
- 14
soapfoot
Well-known member
Does this seem like a decent PT candidate for this project?
https://edcorusa.com/collections/tube-power-transformers/products/xpwr083a-200v-40ma-8v-1-5a
https://edcorusa.com/collections/tube-power-transformers/products/xpwr083a-200v-40ma-8v-1-5a
djn111
Well-known member
Hello,
Received two output transfomers from CJ today, I can only say WAUW ! I am very happy with them.
Hope they sound as good as they look
Thanx CJ to make this happen.
DJN
Received two output transfomers from CJ today, I can only say WAUW ! I am very happy with them.
Hope they sound as good as they look
Thanx CJ to make this happen.
DJN
Spencerleehorton
Well-known member
i would stick with toroidal, as this made the biggest difference in noise to my build
Spencerleehorton
Well-known member
ive just done a shoot out with the noble clone and the REDDI clone and both sound fantastic but for my money i use the REDDI clone with my active preamp bass and the Noble with the passive (but active pickups)
Shipping is the same price as the transformer, (80 US)
I can send you one but you can cut your shipping cost in half if you can find somebody to do a group buy,
cj
I can send you one but you can cut your shipping cost in half if you can find somebody to do a group buy,
cj
Buy many and become distributor
*not financial advice*Haha yes indeed. But unfortunately I have no time for this.Buy many and become distributor
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