Addendum
IMPORTANT SAFETY INSTRUCTIONS • • • • • • • • • • • • • • • • • • Read these instructions. Keep these instructions. Heed all warnings. Follow all instructions. Do not use this apparatus near water. Mains powered apparatus shall not be exposed to dripping or splashing and that no objects filled with liquids, such as vases, shall be placed on the apparatus. Clean only with dry cloth. Do not block any ventilation openings, install in accordance with the manufacturer’s instructions.
Introduction WELCOME ABOARD AGAIN! M any thanks for adding a VOX Valvetronix VTX combo to your sonic arsenal. We’re sure it’ll give you countless hours of great guitar tones that will feel as good as they sound! You may have noticed that this is an addendum to the original Combo Manual. In this we’ll cover the new NeoDog speakers, new cabinet construction, correctly connecting external speakers and the new Impedance Select Switch for your AD60VTX or AD120VTX combo.
AD60VTX SPEAKER CONNECTION CHART Please read the below chart to make sure you correctly connect external speakers to the AD60VTX. Keep in mind that the speaker jacks are wired in Series, which means that the total impedance of the speakers equals the sum of the impedance of the internal (8 Ohms) plus the external speaker (4 or 8 Ohms).
AD120VTX SPEAKER CONNECTION CHART AD120VTX If you use: Set the Impedance of the AD120VTX to: *8 Ohm per side (AD212 or AD412) 16 Ohms 4 Ohm per side 16 Ohms 16 Ohm per side DO NOT DO THIS!!! Use Speaker Jack: Left and Right Left and Right AD212 or AD412 Input Input 4 Ohm per side *This option is highly recommended! This will make you a rock star. OK, maybe not a rock star but you will sound great. If you don’t have this cabinet... you need it. If you have it...
NERDY IMPEDANCE INFORMATION AHEAD The following is some information that you’ll find useful for hooking external cabinets up your Valvetronix AD60VTX or AD120VTX combo. When you’re done with this, you’ll be a smarter and better person! Plus you’ll know the correct way for hooking up speaker cabinets in series. In multiple speaker cabinet configurations, you will have to use a little mathematics (Ohm’s law) in order to figure out the correct setting.
Number of outputs: AD60VTX Rear panel: 1 x Loop send 1 x Phone out 1 x Line out 1 x Speaker out (Series connection with inside speaker) AD120VTX Rear panel: 2 x Loop send 1 x Phone out 2 x Line out 2 x Speaker out L ch: Speaker out (Series connection with inside speaker) R ch: Speaker out (Series connection with inside speaker) Speaker AD60VTX: CELESTION NeoDog (VOX original) x 1 AD120VTX: CELESTION NeoDog (VOX original) x 2 Power output AD60VTX: 60 Watts RMS AD120VTX: 60 Watts RMS x 2 (L/R) Tuning range: A
