The Don Classics 2NV73 Manuel utilisateur
the DON classics
www.thedonclassics.com
2NV73
ASSEMBLY GUIDE
REV: 1:00
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QUICK SSEMBLY GUIDE
6 STEPS TO MIC PRE & EQ HEAVEN!
1. Solder parts on PCBs
2. Place PCBs in metal work
3. Make ribbon cables
4. Initial test
5. Set bias
6. ttach face plate & knobs
Record!
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Frequently Asked Questions (FAQ)
Q. Is there a schematic that would be useful?
A. Schematics for the bui d can be found here: Schematics
PCB designations reference this.
Q. How can I power the unit?
A. As standard, there is an interna power-supp y in the 2NV-Rack. Simp y
connect a 24VAC power brick, and that's it. A ternative y you can power it via
the +24V or -24V rai of your 51X unchbox.
Q. How do I set up the unit to use 24V of my 51X lunchbox?
A. Refer to page 8
Q. How do I set up the unit to use -24V of my 51X lunchbox?
A. Refer to page 8
Q. I have never made ribbon cables before, is it difficult or time
consuming?
A. The opposite! A you need is a sma vice.. you insert the ribbon cab e into
it's housing, making sure it's a igned straight, and then squeeze in the vice, and
that's a there is to it!
Q. Who can build this?
A. You!
As ong as you have patience and are thorough in your work, anyone can
bui d these units. There's ots of support and information and it is tried and
tested. There is very itt e off board wiring too.
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1. Solder parts on PCBs
Insert a parts on to the PCB as marked on the si kscreen.
Si kscreens can be down oaded here: si kscreens
GENER L TIPS:
· Start with sma er parts (resistors etc.) and work up to the arger parts (caps etc.)
· Take care when so dering po ystyrene caps as they are particu ar y sensitive to heat.
So try not to take too ong when so dering them.
· Before so dering the DI PCB, decide whether you wi use +24V or -24V when
powering the unit via a 51X unchbox. See page 8.
For the 'B ' PCBs:
It' be easier to so der the PCB pins ast, once everything is so dered. So just so der
the other parts for now.
For the B 283b:
The 2N3055 wi be p aced on to the heatsink using the 2N3055 screws and nuts, and
then so dered.
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The 'B ' PCBs will look like the following:
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For the EQpots PCB:
TIP: Use lu tack to align the pots straight, then just solder the middle pins. Check alignment,
and if not ok, you can heat the middle pin again and adjust. When happy, finish soldering the other
pins.
EQpots PCB top:
EQpots PCB bottom:
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Switches PCB top:
Switches PCB bottom:
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Powering options:
There are 3 powering options possib e with the 2NV units.
•Interna +24V PSU of 2NV-Rack
•+24V rai of your 51X unchbox
•-24V rai of your 51X unchbox
There is a switch on the 2NV-rack which wi switch between interna PSU and the
51X rai .
For the DI circuit, if you wi NOT be using the negative 24V rai of your 51X
unchbox, you wi so der it as per +24V. The DI wi work on both 51X and interna
PSU switch options.
If you WILL be using the negative 24V rai of your 51X unchbox, you wi have to
decide whether you want to configure the DI to work with the interna PSU of +24V,
or the -24V of the 51X. (note: no damage wi be done, it wi just on y work with
one option. Micpre/EQ etc wi sti work as norma of course.)
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To solder the DI PCB:
Common parts to both +24V and -24V powering options:
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For +24V option (standard):
(Parts soldered as per top silkscreen)
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