Mesa/Boogie LoneStar Amplifier owner manual Channel & Solo External Switch Ports

BIAS SELECT:

REVERB

BRIGHT

REV WARM

ALL - TUBE AMPLIFIER

REAR PANEL: (Continued)

REVERB: The LONE STAR incorporates a stunning analog Reverb circuit that is fi tted with individual Channel Mix controls and a unique Reverb Voicing feature that offers a choice between two classic reverb sounds.

LONE STARMESA BOOGIE	ALL - TUBE
	AMPLIFIER
CH 2 REVERB CH 1	REVERB
LOOP
IN	BRIGHT
HARD BYPASS	REV WARM

REVERB BRIGHT produces a vintage guitar amp style brighter sound fi lled with canyons of harmonics and the classic spring resonance, while REVWARM 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.

CHANNEL SOLO

EXT

SW

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.

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.

BIAS SELECT			SPEAKERS
EL-34	EL-34
WHEN	6L6			SLAVE
		8 OHM	4 OHM	4 OHM
RED ON
CAUTION: SWITCH MUST		HAND BUILT IN PETALUMA CA.
MATCH TUBES IN USE

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 amplifi er. 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. Afi cionados 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 fi nished exploring this side of the Atlantic for vintage magic, defi nitely 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 fi nd 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.

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