S.E.X 2.1 build with Output Impedance Switch

[dhherring]

Building my S.E.X 2.1, and I would like to incorporate the impedance switch as part of the build.

I've read the relevant section of both manuals, and think I know what needs to be done as far as wiring is concerned, but I would like a sanity check and make sure I've got the wiring as is should be:

-  No changes to the wiring as far as the input primary is concern on the OT's.

-  As far as wiring the secondaries is concerned, I attached jumpers of the appropriate length to the secondary terminals as per the impedance switch manual.

-  Install the OT's, using the standoffs and screws from the impedance switch kit.

-  Install the impedance switch board and wire them up as per the impedance switch manual.

-  Wire up the binding post as per the S.E.X manual, except connect the black wire for each post to the Neg. pad on the appropriate impedance switch board instead of the headphone jack.

-  Prep the 3" wire to connect the headphone jack to 23U.  Solder the terminal closet to the volume pot (Page 29 of the S.E.X manual).

-  For each channel, connect and solder a black wire from the Ground pad on the switch boards to the bottom terminal on the headphone jack away from the volume pot.

-  For the right channel, connect a red wire from the POS pad on the right OT switch board to the middle terminal on the headphone jack away from the volume pot.

-  For the left channel, connect a red wire from the POS pad on the left OT switch board to the top terminal on the headphone jack away from the volume pot.

So, do I have this right or have I missed something here?

Thanks in advance for any input.

Don
 

[Paul Birkeland]

I think I might be the only person who has built a SEX amp with the impedance boards from scratch.  I believe your points are all correct here, but I remember having a head scratching moment or two initially (PJ - can we add schematics to the manual?).

Luckily, this is a low-stakes part of the circuit - as long as you leave the primary connections alone, making mistakes on the secondary is very unlikely to cause catastrophic issues.

[dhherring]

Thanks for the response.

I finished up the S.E.X. this weekend, and can confirm the above points will result in a successful build.

fwiw

Don