EBS MAGNI 502 Professional Bass Combo User Manual

EBS MAGNI 502 Professional Bass Combo

About the EBS Magni 502 Bass Combo

The name ’Magni’ stems from a character in Norse mythology – Magni, son of Thor (the God of Thunder). The word Magni translates to ‘Strong’ and is indeed significant for these thunderous Magni 502 bass combos!

The Magni 502 combo is based on the Reidmar 502 amp design. It is available in a configuration with 2×10” and a tweeter. The rig can be extended with a 4-ohm passive speaker cabinet.

The Magni 502 is designed and developed in the heart of Sweden by EBS.

GETTING STARTED

1. Carefully unpack the bass combo.
2. Check that all knobs are set fully counterclockwise besides the EQ controls marked BASS, MIDDLE, and TREBLE which should be set to mid position. Make also sure all push switches are set to their outer positions. Now the EBS Magni 502 settings are “zeroed” and ready to be personalized.
3. If you add another cabinet, make sure the impedance of that cabinet is not below 4 ohms.
4. Turn on the POWER switch.
5. Plug in your bass. While plucking the strings as hard as you would during your hardest playing, gradually increase the GAIN knob unit the peak LED starts to flash at peaks.
6. Move over to the VOLUME knob and adjust for the desired output volume.
7. The first tonal shaping circuitry is the Character Filter next to the GAIN control. This filter provides a preshape EQ prior to further fine-tuning your sound.
8. Enable the filters by pressing the Filter Active push button and exploring the filter section. Play your bass. Note that there isn’t any difference in sound yet.
9. The filters are basically of the boost/cut design. This means that the level controls marked with + and -signs, either boost or cuts the selected frequency band. Further, the MIDDLE section has got a frequency control for precise adjustment of the midrange.
10. Gradually increase or decrease the level and vary the frequency of the middle filter when operating the middle filter. Notice how the sound is affected. An A/B comparison can be made by toggling the filter active switch.
11. Proceed to the COMP/LIMIT knob. This control adjusts the compression and is useful when playing very dynamic or loud.
12. Turn up the COMP/LIMIT knob to mid and max positions. Notice how the peaks in volume will straighten out as you play harder and harder.
13. Now, go on to the BRIGHT and turn it halfway up. Play your bass. The BRIGHT filter is a high pass filter that works on the highest frequencies of the bass to give enhanced ambiance and presence.

This was a brief introduction and as you go on further in this manual, you will learn how to use and utilize all of the useful features that the EBS Magni 502 offers you.

BLOCK DIAGRAM

FRONT PANEL CONTROLS

1. INPUT -A low noise, high impedance instrument input that will interface with passive and active instruments perfectly.

2. CHARACTER FILTER -The EBS Magni 502 provides a preshape filter, Character, which operates independently from the other preamp functions. This gives the user the opportunity to reshape the sound before the final processing with the other features of the preamp. When on, boost is achieved in bass and treble ranges respectively, while the midrange has a slight drop in gain.

3. GAIN -Control to adjust the instruments’ signal strength to the right operating level in the EBS Magni 502. For optimum basic signal level, turn up the GAIN knob until the PEAK led starts flashing from the strongest signal from the instrument.
   Note: A correctly set GAIN is vital for the signal processing to work properly in the EBS Magni 502.

4. COMP/LIMIT -A low noise compressor limiter that works fast and effectively, tightening up the sound and preventing the bass head from saturating at peaks when approaching the headroom limit. A string may be plucked very hard and fast, without any greater difference in the level or side effects. The COMP/LIMIT knob sets the compression ratio, i.e. The signal strength relation between the input and output; the higher ratio the more compression. The LED intensity dynamically indicates the amount of compression during play.

5. FILTER ACTIVE – This switch activates the filter section described under point 6.

6. FILTERS -The filter section contains four enhanced performance filters:
   BASS is a ’shelving’ type 12dB/oct slope phase compensated bass filter with a wide gain range.
   MIDDLE has an extended frequency range of 100-6000 Hz. This filter facilitates
   total control over the mids, with a wide bandwidth giving a natural and non- peaking result using frequency-dependent gain. In addition, at the minimum setting, this filter facilitates a notch function, suitable for cutting an exact frequency or eliminating acoustic coupling.
   TREBLE is a shelving-type filter controlling the higher mids and treble registers, giving presence and ambiance to the sound.
   BRIGHT is an advanced high pass filter capable of producing bright high treble timbre, without adding practically any noise.

7. VOLUME -The VOLUME knob controls
   all volume in the unit, controlling the power amp and LINE output. The balanced output (XLR) is not affected by the setting of this knob.

8. PILOT LAMP -Indicates power on condition.

Midrange filters

REAR PANEL FEATURES

1. BALANCED OUTPUT -A balanced output functions as a high-quality line box for connecting to PA mixing consoles or to studio or broadcast recording units, with high noise immunity. The volume level does not affect this output.

2. GND LIFT SWITCH -Lifting ground is a great aid on many occasions in eliminating ground noise and hum. When required, set this switch to the Lift position to disconnect the ground from the balanced output.

3. PRE/POST EQ SWITCH -The switch selects the signal source. In the inner position this switch selects the overall sound included settings on the EQ, otherwise, in the lower position an uncolored sound is taken immediately after the input of the amplifier.

4. EFFECTS LOOP – This is a serial effects loop for the use of external units such as box or rack effects. The nominal level is set for use with standard stomp boxes.
   The loop puts the external effects after the filter, compressor, and drive sections.

5. LINE OUT -This is a full-range output that will drive multiple power amps, extending the power of the system. The signal present at this output is taken after the volume control.

6. PHONES – 1/4” stereo contact to connect a pair of standard headphones.

7. SPEAKER OUTPUT – Option to connect an extra speaker here. The impedance must not be lower than 4 ohms.
   Warning: Lower impedance than 4 ohms may cause permanent damage to the amp.

8. MAINS SELECTOR SWITCH -Selects the operating mains voltage. Unplug the amp before selecting the mains voltage!

9. MAINS – Connect only to the indicated mains AC voltage and replace the fuse if needed only with the same type and value.

10. POWER -Switches the amp on or off.

AVAILABLE MODELS

EBS MAGNI 502 – MA102
2×10” Speaker Configuration

• Freq. range: 45-20.000 Hz
• Weight only: 15.4 kg / 33.95 lbs

Specification

Specifications are subject to change without notice! EBS MAGNI 502 – PROFESSIONAL BASS COMBO

DESIGNED AND DEVELOPED BY EBS SWEDEN AB• GRINDSTUVÄGEN 44-46, SE-16733 BROMMA,SWEDEN PHONE +46 87350010, FAX:+4687350005 • E-MAIL: info@ebssweden.com. WEB: www.ebssweden.com.

References

• EBS PROFESSIONAL BASS EQUIPMENT - EBS Professional Bass Equipment Since 1988

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