First of all, it's not a ridiculous idea.
You could use any potentiometer between the values of about 10K to 50K
Ohms. On a Potentiometer (https://en.wikipedia.org/wiki/Potentiometer),
there are three lugs. The two outside lugs are connected to a
(typically) carbon ring that is a semi-circle. Basically, the carbon
semi-circle is a resistor & if you were to connect an ohmmeter across
those two lugs, you would measure the value of the pot (plus or minus
the tolerance). The center lug is the wiper & is connected to the shaft
so that it will rotate to either of the outside lugs. Thus, the
resistance measured at the center lug will change as you rotate the shaft.
First, rotate the shaft to the full counterclockwise (off) position
Connect the incoming signal to the outside lugs, the low side to the lug
next to the wiper & the hi, or plus, to the other outside lug, opposite
the wiper. Next, connect the output low to the low side lug (next to the
wiper, connecting it to the same lug as the incoming low side) and
connect the output plus to the center lug. Assuming your input/output
connectors are the correct polarity, your done! You can house your newly
constructed attenuator anyway you like, or not.
I built an attenuator using the same method. At first, I used single
turn pots but changed them out for 10 turn pots so that the adjustment
can be more precise.
Hope this helps,
Corey Bailey Audio Engineering
On 1/30/2021 8:40 AM, Jesse Kenas-Collins wrote:
> Hi All,
> I have a question for those more literate in electrical engineering than I
> - I've been using a Rek O Kut ultra preamp for flat and RIAA transfers, as
> well as a first generation KAB VSP Souvenir for listening to 78s. I would
> like to run my turntable through both simultaneously to achieve parallel
> - My understanding is that I could split the signal from the output of the
> Rek-o-kut (set to flat) and send one path to my audio interface and the
> other path through an attenuator bringing the signal back to phono level,
> then into the KAB.
> - First of all is this a ridiculous idea? If not, any recommendations for
> designing / building an appropriate attenuator? ( my soldering and
> schematic reading skills are rudimentary at best).
> Any way I would certainly welcome any alternate recommendations / solutions.
> Much thanks,
> Jesse Collins