Mesa/Boogie LoneStar Amplifier owner manual Appearance of your Lone Star, Stunning results

REAR PANEL: (Continued)

BIAS SELECT: (Continued)

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

NOTE: It is possible to run the smaller octal 6V6 power tubes for reduced power applications and a looser bubblier sound in the TWEED AC POWER SETTING ONLY. Leave the BIAS SELECT switch set to 6L6 (switch down) and install four 6V6 power tubes. It is advisable to use both Channels set to the 100 watt setting for reliability and proper impedance matching.

Do not run 6V6 in the normal POWER ON setting as they cannot handle the higher AC voltage and could fail and damage internal components! When using these tubes, move the 8 ohm speaker to the 4 ohm SPEAKER OUTPUT jack. This will reduce strain on the tubes and produce the best sonic response.

SPEAKERS: The LONE STAR provides one 8 ohm and two 4 ohm speaker outputs and this enables you to use many different combinations of speaker setups. The 1x12 combo uses an 8 ohm speaker while the 2 x 12 combo uses two 16 ohm speakers wired in parallel and this harness connects to the 8 ohm speaker output. You should experiment with different loading conditions as there

		may be a certain impedance mismatch that produces a sound you may prefer to the correct load condi-
		tion.This will not hurt the amplifi er, however mismatching in the higher direction will wear the power tubes
SPEAKERS		faster. You will fi nd sample speaker wiring diagrams later in this manual and when you get time it would
		be a good idea to browse this section to understand more about different ways you can use your LONE
	SLAVE	STAR with alternate speaker combinations.We build many different types of Extension Speaker Cabinets,
8 OHM 4 OHM 4 OHM		all with unique characteristics, as well as a line of matching Classic cabinets to enhance both the sound
HAND BUILT IN PETALUMA CA.
		and the appearance of your LONE STAR.

SLAVE: The SLAVE Output and its accompanying Level control provide an output for capturing the sound of both preamp and power section. This feature may be used to drive additional slave power amplifi ers for big venue applications or to drive a string of outboard processors when using the EFFECTS LOOP is not desirable. It is not a direct recording output as it derives its signal from the speaker jacks and is much too strong a signal to connect to the input of a console. Also there is no roll off of high frequencies or shaping, as the speaker does this, so the sound would be less than desirable for recording applications.

SPEAKERS

Should you need a direct recording sound, check out one of our Rectifi er Recording Preamp’s which are

designed specifi cally for this application and has the necessary circuitry to achieve this diffi cult task with

stunning results.

SLAVE

8 OHM 4 OHM 4 OHM

HAND BUILT IN PETALUMA CA.

NOTE: The signal from the SLAVE Output is powerful. Always start with the LEVEL control set to its lowest position (7:00) when connecting to anything and bring the level up slowly to avoid damaging gear (and ears) downstream of the LONE STAR

NOTE: Once a signal has been taken from the SLAVE Output, it can not be routed back into the amplifi er (INPUT or EFFECTS LOOP RETURN). Doing so will produce a feedback loop resulting in a high pitched squeal much like holding a microphone up to a monitor.

That covers the features, outputs and functions of your LONE STAR …now it’s up to your imagination as to how best to utilize all this expressive power. Whichever way you take it, we wish you many years of elevated inspiration and hope you fi nd lasting satisfaction and enjoyment from this hand-crafted musical instrument.

If you have any questions or concerns unanswered in this guide, please feel free to call our Customer Service department and ask for a Product Specialist who will be glad to help you get the answers you need. Cheers and Enjoy!

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