Mesa/Boogie 100, 45, 55 owner manual Without having to look at them

Models: 45 55 100

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REAR PANEL CONTROLS & CONNECTIONS: (Continued)

50 / 100 WATT : (Nomad 100 Only) This is the “half power” switch found only on the 100 watt Nomad. The two inside power tubes are put in a standby mode when the 50 watt position is selected reducing the RMS power to approximately 50 watts. This switch may be operated at any time during performance.

100 WATTS

CH3

REVERB

For optimum performance it is recommended that you change the speaker or cabinet from the 8 ohm to the 4 ohm jack when switching down to the 50 watt position. This ensures a proper impedance match by keeping the relative load the same. By doing so a brighter, bouncier response will appear and the full 50 watts of power will be available to you.

50 WATTS

If you prefer the fatter, darker nature of the speaker in the 8 ohm jack when in the 50 watt position you

 

may feel free to use this scenario with no harm to the amplifier.

REVERB: These three rotary controls are responsible for the dry/wet mix of the traditionally rich analog three spring reverb circuit. Each Channel has a corresponding Reverb Mix Control so that the amount of wet signal can be matched to the style of sound dialed up in that channel. The REVERB can be remotely bypassed globally ( all channels/modes ) with the Reverb switch on the Footcontroller.

They are placed “backwards” (3,2,1) on the Rear Panel so that when

100 WATTS

CH3

CH2

CH1

playing the amplifier from the front, the REVERB Controls follow the

sequence of the channels...allowing you to reach over and use them

 

 

 

 

 

 

 

 

without having to look at them.

 

REVERB

REVERB

NOTE: When the Reverb Footswitch is used to disengage the Re-

50 WATTS

 

 

 

 

verb, a small amount of wet signal can still be heard. To completely

8 OHM

4 OHM

4 OHM

SLAVE

remove the Reverb from the circuit, turn the REVERB Control ( of the

SPKR

SPKR

 

 

 

 

respective channel ) all the way off.

 

 

 

 

COMBO SPKR

USE WITH TWO 8 OHM SPKR

TO POWER AMP

 

SPEAKERS: Three speaker output jacks (1) 1 x 8 ohm and (2) 2 x 4 ohm are provided to interface your Nomad to a variety of speaker

/ cabinet configurations. Nomad self-contained combos use the 8 ohm jack for their output and while this is the proper load, you may

 

 

 

 

 

 

 

 

 

 

 

experiment with mismatching ( in the high direction ) with the inability

 

8 OHM

4 OHM

 

4 OHM

SLAVE

to produce full power being the only downside. Some players prefer

 

 

a mismatch, citing a scoop or softening effect they like better than the

 

 

 

SPKR

 

 

 

SPKR

 

 

 

 

 

 

 

 

 

 

 

 

attack and presence of a proper impedance match.

 

 

 

 

 

 

 

 

 

 

 

COMBO SPKR

USE WITH TWO 8 OHM SPKR

TO POWER AMP

If you wish to add cabinets to your combo or head - you may use

either one ( only ) 4 ohm cabinet on the 4 ohm jack leaving the 8 ohm

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

jack empty or two 8 ohm cabinets each connected to the 4 ohm jacks

thus leaving the 8 ohm jack empty and be assured of a proper match as well as full power capabilities. You may also use a 16 ohm cabinet on the 8 ohm jack - and a 8 ohm cabinet on a 4 ohm jack ( leaving one 4 ohm jack empty ). This combination would yield the proper impedance match. See Speaker Impedance Section later in this manual for more information.

NOTE: Nomad 100 owners should put the 8 ohm speaker/cabinet in the 4 ohm jack when switching the 50/100 Power Switch down to 50 watts to ensure a proper impedance match.

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Mesa/Boogie 100, 45, 55 owner manual Without having to look at them