Summary of Contents for The Don Classics NV73EQ
- Page 1 DON classics www.thedonclassics.com NV73EQ (ADD-ON) ASSEMBLY GUIDE 1:00 REV: © the DON classics 2015 page 1 of 20...
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Page 2: Quick Assembly Guide
Place PCBs in metal work Initial test Attach knobs Equalise NOTE: This manual assumes that you already have a fully working 'NV73' micpre and are upgrading it to the 'NV73EQ' with the 'NV73EQ-Add-on' © the DON classics 2015 page 2 of 20... -
Page 3: Frequently Asked Questions (Faq)
What is the difference between the The 'NV73EQ' is a 2 space mic-pre & EQ unit. The 'NV73EQ-Add-on' is for people already with the NV73 mic-pre who want to upgrade it to the 'NV73EQ' What is included in the addon kit? - Page 4 The 47pF caps are a hot topic.. some vintage units have them removed, some don't. They exhibit a large drop in the top end when EQ is pushed in, however if you are trying to emulate a particular vintage unit then the footprint is there. It's up to you! © the DON classics 2015 page 2 of 20...
- Page 5 PCBs should end up looking like this... TOP PCB: © the DON classics 2015 page 5 of 20...
- Page 6 TOP PCB (underside): © the DON classics 2015 page 2 of 20...
- Page 7 BTM PCB: © the DON classics 2015 page 7 of 20...
- Page 8 BTM PCB (underside): © the DON classics 2015 page 2 of 20...
- Page 9 I've included this cap so you will have the extra position of 10kHz. If you prefer, you can of course set this rotary switch to just the 7 positions like the 1073 & front panel. © the DON classics 2015 page 9 of 20...
- Page 10 3. Wire the pots Wire pots as shown: TIP: A little heatshrink will keep things neat and make sure no shorts happen between connections. © the DON classics 2015 page 2 of 20...
- Page 11 Confirm the 2 side edge teeth pop through. Once fitted, bend back the ribbon cable and fit strain relief clips. Split the cable further long the middle to increase flexibility when plugging in the PCBs © the DON classics 2015 page 11 of 20...
- Page 12 Place the BTM PCB roughly in place as a reference for how long the wires should be. Solder wires as shown. The K & 24V wires can poke up through the extra hole in the BTM PCB. The next page shows the connections... © the DON classics 2015 page 2 of 20...
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- Page 14 For the other standoffs, use the 3 large nylon male/female standoffs. Now confirm the following three things: 2N3055 case should short to output transformer pin 1.. Output transformer pins shouldn't short to ground.. Terminal block screws are tightened.. © the DON classics 2015 page 2 of 20...
- Page 15 Place two 1inch metal standoff on the BTM PCB as shown below. Secure with nut. Place on the BTM PCB and feed through the wires Tighten the screws in the two green terminal blocks. © the DON classics 2015 page 15 of 20...
- Page 16 Insert the ribbon cable into the BTM PCB and TOP PCB. Carefully shift the ribbon cable until the TOP PCB lines up with the standoffs and screw using the remaining 4 pan head screws. © the DON classics 2015 page 2 of 20...
- Page 17 Same with the tab on the small pot. If not, long tweezers could also prevent turning of the body when tightening. Make use of the blind holes in the front panel for the tabs on the potentiometers. © the DON classics 2015 page 17 of 20...
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Page 18: Initial Test
Run some audio through the unit with EQ on and off and check that it sounds good and all controls work correctly. Make sure there is no buzz or hum from the unit. If all is well then we can fit the knobs... © the DON classics 2015 page 2 of 20... - Page 19 Use a small flat head screw driver. (Use two at the same time for an easier way to secure the knobs evenly. Use a T2 sized head screw the small grey knobs on. Congratulations! Get recording & mixing! © the DON classics 2015 page 19 of 20...
- Page 20 PCB with the 15/18 gold fingers to insert to the lunchbox. (One source of card edge connectors and edge adapters is Jeff's excellent store classicAPI) © the DON classics 2015 page 2 of 20...