Mesa/Boogie Mark Five Owner's Manual download pdf (Page 32)

attack, sweet sparkling top end, and tight-tracking low end are achieved with an 8 Ohm Cabinet Load.

NOTE: Repeated From HELPFUL HINTS Section; Speaker Impedance has a sonic effect on the sounds of the MARK FIVE: 25

power section (and when it is switched between its two different Modes). We prefer a matching 8 Ohm Speaker Load connected to

the 8 Ohm SPEAKER OUTPUT for the most balanced sound and overall performance. You can safely experiment with different Load

combinations in the high direction, for example an 8 Ohm Speaker Cabinet connected to the 4 Ohm SPEAKER OUTPUT jack on the

MARK FIVE: 25, or a 16 Ohm Cabinet on the 8 Ohm SPEAKER OUTPUT. You can’t hurt your ampliﬁer loading it in the high direction

and you may discover an impedance scenario that, though a technical “mismatch”, produces a unique response that ﬁts your needs.

The only penalty might be that your power tubes may wear a bit faster with mismatched load conditions and you won’t achieve the

ampliﬁer’s maximum headroom (full power output). Do Not use an impedance mismatch in the low direction (example: a 2 Ohm Load

on a 4 Ohm SPEAKER Output) as this is very hard on the Output transformer and may cause damage to the ampliﬁer.

CabClone™ D.I.

As mentioned in the OVERVIEW in the Front of this Manual, the MARK FIVE: 25 features one of—if not the—

coolest feature ever to grace a MESA Rear Panel, the on-board CABCLONE D.I. and Cabinet Simulation feature. This built-in direct

recording solution allows you to capture a wonderful representation of the MARK FIVE: 25’s inspiring sound

and feel direct to a Console, Converter or even direct to a Recorder without the need to mic up a speaker.

Impossible you say, a long list of well known producer’s, engineers and player’s would beg to differ with you.

Taken directly from our acclaimed stand-alone CABCLONE™ D.I. unit, this speaker-compensated D.I. XLR

Balanced Output (and HEADPHONE Output) does an incredible job of capturing the signal from the SPEAKER

OUTPUT and turning it into direct- injection gold. The four elements here in this section of the Rear Panel

allow for use with a live speaker or without, so you can blend the direct signal and a mic’d speaker cabinet if you so desire.

The CABCLONE section features include:

• SPKR ON/SPKR OFF - SPEAKER Status

• CLOSED BACK/OPEN BACK - CABINET Style

• CabClone™ D.I. - XLR BALANCED D.I. Output

• LIFT/GROUND - Pin 1 Float .

This array of controls and Output comprises perhaps one of the most valuable and welcome feature set on any MESA amp, expand-

ing both the functionality and enjoyment potential many fold. The MARK FIVE: 25 is the ﬁrst of our ampliﬁers to include this powerful

tool built right in for speedy and convenient recording applications without sacriﬁcing authenticity and Tone. It’s sure to increase the

professional potential of this little dynamo and help this compact MARK Series package usher in a new era of MESA performance as

well as raise the bar even further for ampliﬁers in its category and beyond.

SPKR ON/SPKR OFF

This mini toggle mutes the SPEAKER Output when you want to record “silently” with the CabClone D.I. (direct with no speaker sound

from the ampliﬁer). This switch allows you to decide if you’d like to utilize both a live speaker cabinet AND the CabClone’s XLR Direct

Out or just the XLR D.I. OUT. Also, while it’s not needed as you have the STANDBY on the Front Panel for this purpose, this switch

may be used as a Mute switch, though with its Rear Panel location this is a less desirable way to achieve that function.

NOTE: IMPORTANT! The SPKR OFF switch position automatically connects a Load Resitor to the SPEAKER Outputs to prevent

damage to the output transformer and allow silent (no cabinet connected) direct recording with the XLR D.I. OUT. Selecting SPKR

ON defeats the internal Load and connects the signal to the SPEAKER Outputs. DO NOT USE THE AMPLIFIER IN THE SPKR ON

SWITCH POSITION WITHOUT A CABINET (LOAD) CONNECTED! Damage to the ampliﬁer will likely occur and is not covered

under the Warranty!

PAGE 28

CLEAN

CRUNCH

MK IIC+

XTREME

GAIN TREBLE

MID BOOST

MID PRESENCE MASTERBASS

EQ ON

EQ FS

SPKR

CLOSED

BACK

OPEN

BACK

CabClone™

D.I.

SPKR

OFF

LIFT

GROUND

EQ ON

EQ FS

CAUTION: Unplug

power before

servicing

120 V~

60 Hz

1 A

1.25 A

SLO

BLO

AMPLIFIER

44YV

HEADPHONERETURNSEND

4 OHM 8 OHM

4 OHM

REVERB

CH 2 CH 1

MARK FIVE: 25™

VACUUM TUBE

AMPLIFIER

HANDCRAFTED

IN PETALUMA,

CALIFORNIA

80Hz 240 750 2200 6600

25 W

10 W

25 W

10 W

TUBE GUIDE

6 x 12AX7

2 x EL 84

PATENTED

7,602,927

(USE WITH TWO 8 OHM SPKRS)

SPEAKERS

INPUT

FT SW

POWER

STANDBY

MARK

TWENTY-FIVE

™

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Mesa/Boogie Mark Five Owner's Manual Page 32

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