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PRO-18 USER MANUAL 

REV A 

CHAPTER 3

 

FRONT AND BACK PANEL 

 

1.

 

Front Panel Controls, Switches and Connections: 

a.

 

Gain 

b.

 

Master Volume 

c.

 

Treble 

d.

 

Bass 

e.

 

Reverb 

f.

 

Variable power* 

g.

 

AC ON/OFF switch 

h.

 

Standby switch 

i.

 

¼” Hi impedance jack 

j.

 

¼” Lo impedance jack 

k.

 

Pilot light 
 

2.

 

Back Panel connections: 

a.

 

¼” mono rhythm/boost jack.  Boost enable is default. 

b.

 

¼” mono reverb jack. Reverb enabled is default  

c.

 

¼” mono FX Send jack 

d.

 

¼” mono FX return jack 

e.

 

¼” stereo record jack 

f.

 

¼” mono 4 ohm jack 

g.

 

¼” mono 8 ohm jack 

h.

 

¼” mono 16 ohm jack 

i.

 

IEC AC connector with internal fuse. 

 

 

Summary of Contents for PRO-18

Page 1: ...1 PRO 18 USER MANUAL REV A Professional Tube Amplifier PRO 18 User Manual WWW NACEAMPS COM ...

Page 2: ...PANEL 4 7 CHAPTER 5 BACK PANEL 5 8 CHAPTER 6 NOTES ON THE V POWER CONTROL 6 10 CHAPTER 7 FRONT PANEL CONNECTIONS 7 11 CHAPTER 8 BACK PANEL CONNECTIONS 8 13 CHAPTER 9 EXTENSION CABINET CONNECTIONS 9 15 CHAPTER 10 A FEW NOTES ON THE RECORDING OUTPUT10 17 CHAPTER 11 AVERAGE AND PEAK POWER 11 18 CHAPTER 12 ELECTRICAL SPECIFICATIONS 12 19 CHAPTER 13 TUBE LOCATIONS 13 20 CHAPTER 14 WARRANTY 14 21 ...

Page 3: ...lug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet 10 Protect the power cord from being walked on or pinched particularly at plugs convenience r...

Page 4: ...mplifiers are capable of producing very high sound pressure levels which can cause temporary or permanent hearing damage 17 Do not operate with a Variac The amplifier has line conditioning and damage to the amplifier may occur if a Variac is used 18 For best results and safety information please watch the Tech Tips AC Power video at www youtube com watch v Y1nTFILdY3s index 1 list PL1A4D3BEE9514 1...

Page 5: ...ot light will light up 5 Set the controls as follows a GAIN to 9 O clock b Master Volume to 12 O clock c TREBLE to 12 O clock d BASS to 12 O clock e REVERB fully counter clockwise 7 O clock f V Power fully clockwise 5 O clock g No connections on the back panel other than the appropriate 4 8 16 ohm speaker connection and the AC cord h Wait about 2 minutes for the amp to warm up and the tubes are fu...

Page 6: ...wer g AC ON OFF switch h Standby switch i Hi impedance jack j Lo impedance jack k Pilot light 2 Back Panel connections a mono rhythm boost jack Boost enable is default b mono reverb jack Reverb enabled is default c mono FX Send jack d mono FX return jack e stereo record jack f mono 4 ohm jack g mono 8 ohm jack h mono 16 ohm jack i IEC AC connector with internal fuse ...

Page 7: ... O clock is flat b Clockwise is boost c Counter clockwise is cut 6 Treble controls the high end EQ a 12 O clock is flat b Clockwise is boost c Counter clockwise is cut 7 Master Mater Volume a Controls signal level to the power tubes and sets the level of distortion from the power tubes 8 Gain a Controls the signal level to the preamp and sets the level of the preamp distortion 9 Input a High is th...

Page 8: ...d item P H477 from Antique Electronic Supply 3 RECORD a A line out from the pre amp to facilitate recording sessions and other functions Use a inch stereo plug for balanced output and a inch mono plug for single ended output b Emulates the SPL of a Celestion Greenback c Use a high quality guitar cable or mic cable for best results d Turn the Mater Volume fully counter clockwise when using e Cable ...

Page 9: ... only e Use a high quality guitar cable or mic cable for best results f Cables are not included 5 4 8 16 OHM OUTPUTS a Facilitates the use of speakers with 4 8 or 16 ohm voice coils 6 IEC AC Connector a Accepts a standard IEC AC cable b Module has an internal fuse Use a 2A slow blow fuse only c AC cable and fuse are included ...

Page 10: ...educe output level Here again you must compromise between tone and proper stage setup Nace Amps has invented a solution to this problem The V POWER front panel control This control allows you to set the output power level without affecting the master volume and gain control settings thus keeping the tone you want but at lower output levels Typically from 1 Watt peak 464 milli watts average with th...

Page 11: ...11 PRO 18 USER MANUAL REV A CHAPTER 7 FRONT PANEL CONNECTIONS Normal Guitar Connection Two Guitars ...

Page 12: ...12 PRO 18 USER MANUAL REV A Daisy Chain to another amp Adding a Rhythm section with a redcording device ...

Page 13: ... 18 USER MANUAL REV A CHAPTER 8 BACK PANEL CONNECTIONS REVERB FOOT SWITCH CONNECTION BOOST FOOT SWITCH CONNECTION RECORD Master Volume must be fully counter clockwise if no speaker is being used from the amp ...

Page 14: ...14 PRO 18 USER MANUAL REV A FX SEND RETURN ...

Page 15: ...15 PRO 18 USER MANUAL REV A CHAPTER 9 EXTENSION CABINET CONNECTIONS Single speaker connection Always match the speaker ohmage to the amplifier s output ohmage ...

Page 16: ...16 PRO 18 USER MANUAL REV A Two of more speaker connections ...

Page 17: ... it s nearly impossible to duplicate The Recording Out on the Nace PRO 18 solves all of these problems By simply plugging a 1 4 cable between the Recording Out and straight into your mixer or recording interface you ll enjoy the sound of a well mic ed up guitar cabinet without any voodoo or magic required In the studio the benefits of this may be obvious shorter setup time and consistent sound For...

Page 18: ... continuous steady state sound Consider a fire cracker We hear the explosion as it occurs not averaged over time If the sound produced by the fire cracker were averaged over time we would never hear it or for that matter much anything else Thus when we play a guitar we hear the sound as it is being produced not averaged over time So when I specify the peak power this is the power level you will he...

Page 19: ...ly clockwise d Reverb control fully counter clockwise e Bass control at 12 O clock f Treble control at 12 O clock g Boost enabled default h 10mv input signal 2 Power tubes 2 X EL84 6BQ5 3 Preamp tube 1 X 12AX7 ECC83 4 Phase splitter tube 1 X 12AT7 ECC81 5 Input voltage a 115VRMS 15 48 1000 Hz b 120VDC to 200VDC c The power supply is a regulated power supply that among other things provides power c...

Page 20: ...20 PRO 18 USER MANUAL REV A CHAPTER 13 TUBE LOCATIONS BACK PANEL FRONT PANEL 12AX7 ECC83 12AT7 ECC81 EL84 6BQ5 EL84 6BQ5 ...

Page 21: ...ght to refuse for warranty any damaged misused or modified units 2 In the event Nace Amps refuses the unit for warranty Nace Amps shall contact the buyer with a quote for repairs The buyer shall be required to authorize the charges prior to non warranty service being performed 3 The buyer is responsible to properly package the product for shipment 4 Nace Amps shall pay any shipping charges for the...

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