B2/B2R Bass Amplifier

The Rear Panel

MODEL:

B2R

 

 

SERIAL:

Q2ZZ650022

 

LINE:

120

V ~ 60

Hz

WATTS:

 

MAX

 

14

15

16

17

18

19

20

21 22 23

24

14.FAN: This temperature controlled, vari- able speed fan draws cool air into the amplifier, which forces heat out through the exhaust vents. Never block the vent holes or the fan opening.

15.FUSE: This protects the unit from dam- age due to overload conditions or power line surges. If the fuse blows, replace it only with the same size and type.

16.AC LINE IN: Firmly insert the supplied AC power cord into this socket until it is fully seated. Plug the male end of the cord into a grounded AC outlet. DO NOT

DEFEAT THE GROUND PRONG OF THE AC PLUG!

17.SPEAKER OUTPUTS: Use these jacks to connect the amplifier to your speaker(s) using cables terminated with 1/4” connectors. For the B2 combo, use the supplied speaker cable to connect the out- put of the amplifier to the speaker jack. An extension speaker with an impedance of 8 ohms or higher may be connected and allows the amplifier to deliver its maximum power.

NOTE: In some areas 1/4” jacks are not acceptable for use as extension speak- er jacks. For this reason the 1/4” jacks on your amplifier may be factory-sealed. In such cases use the Speakon® jack to connect to external speaker cabinets.

For the B2R, connect the output(s) using high quality speaker cables.

NOTE: When connecting multiple speaker cabinets to the B2/B2R, keep the overall impedance at or above four ohms! The following chart shows the total impedance load when connecting speaker cabinets in parallel:

Cabinet

# of

Total

Impedance

Cabs

Impedance

8

2

4

16

2

8

16

4

4

 

 

 

18.POWER AMP IN: This mono jack allows you to feed the preamp output of another amplifier to the input of the B2/B2R’s internal power amp. This bypass- es the preamp circuitry of the B2/B2R.

WARNING: This jack goes directly into the power amplifier. DO NOT connect high level signals to it!

19.PREAMP OUT: A post-EQ signal may be taken from this jack and sent to the house mixing board, recording console or external power amplifier.

20.EFFECTS RETURN: To use an exter- nal effects device, connect the OUTPUT of the device to this jack by means of a shield- ed cable. This feeds the processed signal into the Master section of the B2/B2R.

21.EFFECTS SEND: Connect the output from this jack to the INPUT of your effects by means of a shielded cable. This sends a post-EQ signal to your effects.

22.-20dB SWITCH : This switch adjusts the output level at the Balanced Line Output jack (#24). The control works inde- pendently from the front panel Master con- trol. Depressing the switch activates the 20dB pad. The result is a signal that is more compatible with the microphone inputs on a mixer.

23.PRE/POST SWITCH: You can select either Pre or Post EQ for the signal at the Balanced Out jack (#24) with this switch. With the switch in the OUT position, the signal at the jacks will be Pre-EQ. This is a direct output not affected by any EQ or boost settings. With the switch depressed, the signal is Post-EQ and is controlled and modified by the tone controls, Graphic EQ, and Effects Loop.

24.BALANCED OUTPUT: This XLR-type connector supplies a balanced preamp out- put signal for connecting to a house mixing board, recording console or external ampli- fiers with balanced inputs. The signal can be set to Pre or Post EQ by the back panel Pre/Post switch (#23). The level can be adjusted for either mic or line type inputs using the -20dB switch (#22).

Speakon® is a registered trademark of Neutrik USA

5

Page 5
Image 5
Ampeg B2R manual Rear Panel, Defeat the Ground Prong of the AC Plug

B2R, B2 specifications

The Ampeg B2 and B2R are renowned bass amplifiers that have carved a niche for themselves in the music industry, particularly among bass players seeking powerful, versatile, and high-quality sound. These models exemplify Ampeg's long-standing heritage in producing exceptional bass amplification products.

At the heart of the B2 and B2R amplifiers is a solid-state design that ensures reliability and exceptional performance. The B2 model features 100 watts of power, making it suitable for practice sessions and smaller gigs. Meanwhile, the B2R pushes the envelope with 200 watts, allowing it to perform effectively in larger venues without compromising sound quality or clarity.

One of the standout features of both models is the built-in preamp, which includes Ampeg's signature tone stack. This circuitry enables players to shape their sound with precision, offering controls for treble, midrange, and bass frequencies. Whether you desire a punchy tone or something more subdued, the B2 and B2R offer the flexibility to achieve your preferred sound.

Both amplifiers also feature an equalization section that allows for deep tonal control, ensuring that every note played translates into a captivating sound. Additionally, they come equipped with a parametric midrange control, giving players the ability to specifically target frequencies for further refinement.

The B2 and B2R also boast an innovative direct output feature, making it easy to connect to recording devices or mixing consoles. This means musicians can achieve that rich, Ampeg tone even during studio sessions without needing to mic an amp. The inclusion of a headphone jack also enhances their usability, allowing for silent practice.

Durability is key in live performance settings, and Ampeg has built the B2 and B2R to withstand the rigors of touring and gigging. The rugged construction and high-quality components ensure that these amplifiers deliver reliable performance time after time.

In conclusion, the Ampeg B2 and B2R amplify the essence of what makes Ampeg a respected name among bass players. The combination of powerful output, versatile tonal shaping options, and robust design creates a compelling choice for any bassist looking to enhance their sound and performance. Whether on stage or in the studio, these amplifiers continue to be favorites among musicians striving for excellence in their craft.