REAR PANEL FEATURES

SPEAKER JACKS

Two 4 ohm and two 8 ohm jacks are provided. Unlike transistor amplifiers, the D-180 will produce its full power at 4 and 8 ohms. Furthermore, speaker impedance mismatching is not harmful to the D-180 and perceived loss of power is minimal. When using more than one speaker cabinet, remember that total load impedance goes down as more cabinets are hooked up. For example, if you use one 8 ohm speaker cabinet, use one of the 8 ohm jacks. But if you use two 8 ohm cabinets, they will be operating in parallel and the total load impedance will be 4 ohms. Therefore, plug each cabinet into a 4 ohm jack. If you want to use two 2x15 cabinets where each individual speaker is rated at 8 ohm , the best results will be achieved by wiring the speakers inside each box in series. Then each cabinet will become 16 ohms and they should be plugged into an 8 ohm jack.

SLAVE LEVEL, SLAVE OUTPUT & 600 OHM BALANCED OUTPUT

Signal is taken right from the speaker terminal - so that it captures the full sound of the D-180 - then it is linked through the Slave Level Control to both the Slave Out jack and the 600 ohm Balanced transformer and XLR connector. This enables precise level matching for best sound and lowest noise where any variety of receiving electronics might be used - from additional power amplifiers to mixing boards. Full compatibility is assured because all combinations are possible. For example, the M-190 matching full-featured power amp has a balanced input capability and for installations where one or more of these are located a great distance away from the D-180, the balanced interconnect system would be advantageous. Same with long cable runs to the PA and monitor boards: the D-180's balanced output will provide an ideal low noise signal and totally eliminate microphone leakage. Use of a line level input at the board is recommended. For devices that lack balanced input systems, the 1/4" Slave Output jack is provided. Remember that in using either the 600 ohm Balanced Out or the 1/4" Slave Out, you should first adjust the D-180 front panel for desired performance, then increase the Slave Level control as you play to get an appropriate mix into the following equipment.

GROUND SWITCH

A three position ground switch is provided to help in reducing buzzes which originate in the AC power. It is advisable to leave this toggle switch in the center OFF position unless selecting position A or B reduces buzz. With the Ground Switch in its center position, any residual shock between the D-180 and other equipment (microphones, guitar amps, etc.) cannot possibly be originating in the D-180.

FAN SWITCH

Normally the fan should operate in its LOW speed because cooling is adequate and dust build-up is minimized. If fan noise is objectionable - in a recording studio for example - turning the fan OFF will not cause overheating unless the D-180 enclosure is in a confined space. Use the fan’s HIGH speed setting when the D-180 is in an equipment rack with other units and free air circulation is reduced.

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Mesa/Boogie D-180 manual Speaker Jacks, Slave LEVEL, Slave Output & 600 OHM Balanced Output, Ground Switch, FAN Switch
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D-180 specifications

The Mesa/Boogie D-180 is a powerful and versatile guitar amplifier that has captured the attention of musicians since its introduction. Known for its rich tones and robust build, the D-180 is designed to meet the needs of both studio recordings and live performances.

One of the standout features of the D-180 is its all-tube design. Utilizing a combination of 6L6 and 12AX7 tubes, the amplifier produces warm, harmonic-rich sounds that are characteristic of vintage tube amplifiers. This design not only enhances the tonal quality but also provides the dynamic response players seek, allowing for expressive playing that responds to the nuances of their technique.

The D-180 boasts a unique power section with 180 watts of clean headroom. This immense power allows for a wide range of tonal versatility, from crystalline clean tones to fat, saturated overdrives. The amp’s ability to transition smoothly between these tones makes it a favorite among guitarists who require a reliable workhorse for various musical styles, including rock, blues, and jazz.

Additionally, the D-180 features a unique "Simul-Class" technology that combines both Class A and Class AB operation. This innovative design results in a more efficient power usage without sacrificing tone or feel. As a result, players enjoy the punchy response of a Class A amp while retaining the headroom that Class AB provides.

The D-180 also includes a comprehensive EQ section with a three-band equalizer, which allows players to sculpt their sound precisely. The presence and depth controls further enhance tonal shaping, offering substantial adjustment to the overall character of the amplifier. This level of control makes it easy for users to dial in their ideal sound, whether they are in the studio or on stage.

Another significant aspect of the D-180 is its rugged construction. Built with high-quality components and a sturdy chassis, this amplifier is made to withstand the rigors of touring. Its reliability has made it a top choice for professional musicians who need equipment that can handle long hours of performance without any compromise on tone or function.

In conclusion, the Mesa/Boogie D-180 is a formidable amplifier that stands out for its all-tube design, powerful output, innovative Simul-Class technology, and extensive tonal shaping capabilities. Its rugged build and reliability make it a trusted companion for guitarists across genres, solidifying its place in the pantheon of quality amplifiers.
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