Mesa/Boogie OOGIEBMESA Owner's Manual download pdf (Page 18)

PAGE 14

REVERB:

The LONE STAR incorporates a stunning analog Reverb circuit that is ﬁtted with individual Channel Mix controls and a unique

Reverb Voicing feature that offers a choice between two classic reverb sounds.

REVERB BRIGHT produces a vintage guitar amp style brighter sound ﬁlled with canyons of har-

monics and the classic spring resonance, while REV WARM features a smoother, warmer character

often associated with large plate studio reverbs. You will quickly see why we think the LONE STAR

Reverb is possibly our best reverb to date. Enjoy!

CHANNEL & SOLO: External Switch Ports:

These two 1/4” jacks provide an interface for remote control of the Channel Select function

as well as activation of the SOLO control. These jacks may be connected to an external control unit that stores a grounding logic switch function

under a midi program number, thereby removing the need to use the included LONE STAR Footswitch in

larger stage rigs.

The EXTERNAL SWITCH jacks respond to any tip-to-ground latching type logic for their triggering. This

type of switching logic can be found on most midi master control switching units on the market.

BIAS SELECT:

This mini toggle allows for proper biasing when swapping to EL34 type power tubes for a brighter harmonic laden response.

It selects a different set of bias resistors and insures that these extremely different power tubes will sound better and work much more reliably.

The adjacent LED indicator alerts you that the bias has been set to accommodate the EL34’s.

NOTE: It is extremely important that the BIAS SWITCH setting match the type of tubes in use. Failure to comply will result in damage to your

ampliﬁer. Always check the BIAS SWITCH whenever swapping tubes!

If you are doing mostly cleaner rhythm style playing and go for a warmer fatter lead solo voice as well as need a

variety of sounds, you will likely prefer the stock compliment of 6L6’s. They clip in a warmer way and during our R &

D process we found them to produce the best blend of frequencies with the least compromise stylistically.

There are however, some wonderful clipped power sounds available for both chording and single note work with the

right set of EL34’s ﬁtted. Aﬁcionados of this sound have long recognized that nothing produces the layers of soft,

lined-up harmonics like these British style bottles and when dialed right, the LONE STAR takes on a whole new

personality. So when you have ﬁnished exploring this side of the Atlantic for vintage magic, deﬁnitely take a jump

across the pond and check out some of the amazing sounds that are made possible with the inclusion of the BIAS SELECT feature and these

opposite sounding tube types.

We recommend the 6L6 for reliability: In our many tests and continued use of the currently available EL34 type power tubes on the market

today, we regret to say that they do not appear to be as rugged in construction or as reliable as their 6L6 counterparts. This fact, along with their

sonic narrowing of possible styles, is why the LONE STAR ships with 6L6 power tubes.

If you ﬁnd that your signature sound relies on using EL34 power tubes, then we strongly suggest keeping at least one spare set of tubes and a

bag of extra fuses with you at all times when performing in the event of a tube failure. A little preparation will save you a lot of frustration should

one of these less rugged tubes fail.

NOTE: Using the AC POWER switch set to TWEED will reduce the strain on EL34 tubes (and 6L6 as well). If you prefer the sound of this set-

ting, you will reduce the likelihood of tube problems and greatly extend their toneful life, as they are basically coasting.

REAR PANEL:

(Continued)

LOOP

HARD BYPASS

OOGIE

ESA

LONE STAR

CH 2 REVERB CH 1

REVERB

BRIGHT

REV WARM

ALL - TUBE

AMPLIFIER

REVERB

BRIGHT

REV WARM

ALL - TUBE

AMPLIFIER

CHANNEL

SOLO

EXT

SLAVE

SPEAKERS

HAND BUILT IN PETALUMA CA.

8 OHM 4 OHM 4 OHM

BIAS SELECT

EL-34

WHEN

RED ON

EL-34

6L6

CAUTION: SWITCH MUST

MATCH TUBES IN USE

1 2 ... 13 14 15 16 17 18 19 20 21 22 23 ... 39 40

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Mesa/Boogie OOGIEBMESA Owner's Manual Page 18

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