Let's get started! First off
arm yourself with the following list of ingredients. The capacitors
can be either polyester or polypropylene, the choice is yours..... Jan
Meier favours polypropylene and reckons they are the best sounding.
The resistors are also up to you. I favour 1% metal film varieties.
I haven't added an enclosure to the list, solder type or RCA sockets,
these again I will leave to your personal choice.
Step 1: Select two 2k2 resistors and test them to ensure they are as
near to 2k2 as possible. Also ensure they are closely matched..... ideally
they will both measure 2k2 exactly. Repeat this with the two 2K resistors
and the two 330R resistors. If you don't have a multimeter you can buy
one very cheaply.
Step 2: fit the two 2k2 resistors to the breadboard as shown and bend
the legs over under the board.
Step 3: Fit the 47nF capacitor as shown
Step 4: Turn the board over and solder the two legs of the 2k2 resistors
to the leg of the 47nF capacitor (the legs that are next to the leg
of the capacitor..... so all 3 legs in the centre are to be soldered)
snip off any excess to make the joint as neat as possible... Tip:
before soldering it's best to make a good mechanical connection before
soldering, you can either twist the legs together or overlay them .
Step 5: Fit the two 2k resistors as shown and bend the legs under the
board.
Should now look like this from under the board
Step6: Fit the two 330R resistors and bend the legs the same way you
did for the 2K resistors
Step7: Turn the board over and mechanically connect the 3 resistor legs
together as shown... as long as these three are connected it doesn't
matter how you do it, again you can twist them together or lay them
over one another as I have done.... as long as they are all connected
that's the main thing :-)
Step8: Solder the three legs of the joined resistor legs together as
shown
Step9: Snip any excess resistor legs off
Step 10: Place the two 200nF capacitors on the board as shown
Step 11: Turn the board over and bend the legs of the capacitors over
the legs of the resistors to make a good mechanical joint... a screwdriver
is very good for this
Step 12: Snip off the excess resistor leg
Step 13: solder the capacitor / resistor legs together as shown
Step 14: Prepare your hook up wire. You'll need 2 lengths for the left
channel, 2 lengths for the right channel and a length for the ground
connection. You'll know what lengths you need dependant on what enclosure
you will be using
Step 15: Tin the ends of the hook up wire (flood with solder)
Step 16: insert the left input wire as shown so it is as near to the
200nF capacitor leg which is toward the centre of the board when viewed
from above
Step 17: Turn the board over and solder the left input wire to the capacitor
(or resistor) leg as shown in the above photo
Step 18: Insert the left output wire through a hole in the board as
shown
Step 19: Turn the board over and solder the left output wire onto any
of the 3 joined resistor legs
Step 20: insert the right input wire as shown so it is as near to the
200nF capacitor leg which is toward the centre of the board when viewed
from above
Step 21: Turn the board over and solder the right input wire to the
capacitor (or resistor) leg as shown in the above photo
Step 22: Insert the right output wire through a hole in the board as
shown
Step 23: Turn the board over and solder the right output wire onto any
of the 3 joined resistor legs
Step 24: Insert the ground wire through a hole in the board as shown
Step 25: Attach the ground wire to the leg of the 47nF capacitor and
solder
That's the Crossfeed made! All you have to do now is choose an enclosure
to house it in and that's you up and running with your very own Jan
Meier Bass enhanced crossfeed. Remember to
ensure that the ground on the crossfeed is connected to "all"
of the RCA grounds if you are using a plastic enclosure, even if you're
a metal enclosure it's best to ensure earth continuity between each
RCA ground tag.
Enclosures
Here are some enclosures which you may wish
to use:
The smallest Hammond in aluminium... looks the business :-)
Bimbox.... solid aluminium cube made in England
Under the bonnet
Black Hammond enclosure
Black Hammond enclosure with a switch
Pretty ugly ABS enclosure but plenty of room inside.
Bimbox with a captive lead
Black ABS enclosure.