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to your application (microphone, pickup, lines source) and  turn the 

gain control clockwise until the clip 

indicator flashes momentarily 

while playing with a strong attack. Go for a little overload, indica-

ted by the red clip-LED,  to verify that your signal source can satu-

rate the preamps.  Temporary clipping in operation is of no danger 

to the device  however not recommended.  Clipping is detected 

and indicated at several points in the signal path as e.g. the active 

tone control has an effect on the gain structure. 

Note:

There are sources that might not be able to saturate the input sta-

ges of the device. That is a characteristic of the sources and may 

result in signal-to-noise ratio limitation or lower power output. 
Thereafter reduce the gain slightly to operate the device with win 

of additional dynamic headroom and best signal to noise ratio.  

Finally set the desired overall volume level with the master level 

control. You should be almost perfect with gain and master in a 

9:00 o’clock position.

Note: 

With a closer look you will find that there is a difference in sound 

when playing around with gain and master in the range of best 

operation. More gain makes the tone more direct, punchy while 

less gain softens the tone a bit.

5. Functions

 and Features

5.1 tone control

 - tone switch - hpf filter

The 

DaCapo 7

 is equipped with active, high quality three-

 tone

bass

treble

middle

eq channel 1

hpf

bass

treble

middle

eq channel 2

band tone controls in each channel. Bass and treble are laid out as 

shelving filters. The design reflects the ranges of instrument and 

voice whilst offering practical, easy to use access to accentuation 

of your tone.
With the controls in mid position,  i.e. no function,  you will already 

enjoy a very pleasant, warm and realistic sound.  The filters are set 

with care and allow intuitive,  musical operation with left-turn di-

minishing and right-turn augmenting the frequency ranges around 

the filters center frequency. Check technical data below for more 

detail.  However „Wohlklang“ is basically a question of the overall 

concept rather  than the task of a single assembly.

Channel 1

 offers  an additional 

tone 

switch 

that brightens up the sound 

taking out mids and emphasizing the hig-

her ranges. Some instruments, especially 

in the lower registers benefit from less 

focus on mids and a more open, lighter 

tone. Some playing styles benefit from 

this setting too. In conjunction with the 

EQ the tone filter allows more detailed  

midrange accentuation.

Channel 2

 is equipped with a 

high-pass-

filter (hpf) 

also called bass-cut filter. It 

allows signals with frequencies higher 

than a threshold to pass and attenuates 

the others. The hpf-control adjusts the 

threshold between 50 and 350 Hz.    

9

Summary of Contents for Da Capo 75

Page 1: ... just pure and real udo roesner amps cook book acoustics roesner udo Da Capo75 ...

Page 2: ...all Check mains 8 4 1a Cable up properly 8 4 2 Gain Structure Level Adjustment 8 5 Controls and Connections Functions 8 5 1 Tone Switch Tone Control Hp Filter 8 5 2 Effect 9 5 3 Footswitch 10 5 4 Phantom Power 10 5 5 Phones 11 5 6 Send Return external loop 11 5 7 Line out 11 5 8 Aux in 11 5 9 DI out 11 5 10 Mains voltage modul 11 6 Technical Data 12 7 Jumper Position 14 8 Blockdiagram 16 manual 2 ...

Page 3: ...nd enchant with euphony With the Da Capo75 you have acquired a wonderful tool that will help you to perfom magic What and how you play into it will be played back completely relaxed with ease and unaltered The handling is simple it is clearly structured and it just does what it is supposed to do Nevertheless please take a moment to read the following opera ting instructions We have taken an effort...

Page 4: ...self 9 The device should not be installed or used close to strong electromagnetic fields such as large mains trans formers revolving machines neon illumination etc 10 Pay attention to an unhindered air circulation around the amp Never obstruct air vents or grilles 11 Do not expose the device to sudden changes in tempe rature to avoid malfunction or damage due to moisture condensation inside Secure...

Page 5: ... left unused for a long period of time Use only dry cloth for cleaning Avoid the use of detergents and do not let any liquids seep into the unit 20 Do not place any open sources of fire like candles on the device 21 Care should be taken so that objects do not fall onto the device and liquids are not spilled into the enclosu re through openings Ensure that no objects filled with liquids such as vas...

Page 6: ...ector only for microphones clip overload indicator 6 dBV headroom gain input level control range 40 dBV tone sound filter preset not active active bass low frequency tone control 8 dB at 100 Hz middle mid frequency tone control 6 dB at 800 Hz treble high frequency tone control 8 dB at 10kHz hpf high pass filter adjustment 40 Hz to 350 Hz pan effect pan control signal distribution between ch1 and c...

Page 7: ...external effect efx return signal input from external effect line 2 line signal output high level e g mixing console line 1 line signal output 10 dB e g soundcard aux in auxiliary input stereo TRS 3 5mm jack socket DI ch 2 XLR direct out channel 2 balanced DI ch 1 XLR direct out channel 1 balanced mains power connector module IEC connector cold appliance socket mains fuse 1 AT slow blow EU 2 AT sl...

Page 8: ...ls and the master control are in zero left stop and the tone controls in center position You may now switch the device on The power switch on the backside is illuminating in red The green power control LED on the top will indicate readi ness for operation 4 2 Gain Structure Level Adjustment Note A little care should be taken to set the signal level ratios conscious ly and correctly The DaCapo is n...

Page 9: ... Features 5 1 tone control tone switch hpf filter The DaCapo 75 is equipped with active high quality three tone bass treble middle eq channel 1 hpf bass treble middle eq channel 2 band tone controls in each channel Bass and treble are laid out as shelving filters The design reflects the ranges of instrument and voice whilst offering practical easy to use access to accentuation of your tone With th...

Page 10: ...ack side send to input return to output of the additional device The intensity of the external effect has to be adjusted at the external effects unit 5 3 Footswitch Any standard latching double footswitch 2 x on off can be connected to the switch socket at the backside of the amplifier by stereo TRS connector Switch one connected to tip will switch the internal effect on off while switch two conne...

Page 11: ...ng connected to e g mixing consoles Line 1 has less output and allows e g a soundcard to be connected directly with less risk of distorting the digital input of the soundcard 5 8 aux in Aux in is an additional 3 5mm TRS stereo input to connect your playback device to Left and right channel of your playback device are mixed and directly forwarded to the power amp 5 9 DI ch 1 DI ch 2 The device offe...

Page 12: ...d OFF aux in TRS stereo input 3 5mm OUTPUTS phones headphones jack socket stereo L R connected 6 35 mm input Impedance 470 Ohm common for L and R Please note Use TRS Stereo Jacks only Does not work with mono jacks When plugged in internal speaker is muted send jack socket unbalanced 6 35 mm pre master output voltage 1 4 V 3 dBV line out 1 and 2 jack socket unbalanced preamp out 6 35 mm post effect...

Page 13: ...______________ _____________________________________________________ channel 2 hpf filter 40Hz to 350 Hz bass 8 dB at 100 Hz shelf type middle 6 dB at 800 Hz treble 8 dB at 10 kHz shelf type EFFECTS effect presets 1 reverb short 2 reverb long 3 chorus 4 custom delay 5 my delay 6 tap n delay external effect parallel effect loop see also send and return efx pan blends both internal and external effe...

Page 14: ... ch2 on off default on phantom power JP7 phantom power ch1 on off default on JP8 phantom power ch2 on off default on direct out JP9 DI ch 1 pre or post EQ default pre JP10 DI ch2 pre or post EQ default pre Footswitch JP11 ring internal effect parameter or external effect loop on off default internal effect parameter jumper settings may only be carried out by qualified service personnel and when th...

Page 15: ...Block Diagram V 1 Da Capo 75 Sheet 1 1 190626 TM acoustics roesner udo 8 Block diagram 15 ...

Page 16: ... udo amps com MARco labs s a s udo roesner amps are designed and developed in Germany and France by udo roesner and MARco labs Produced in Indonesia with pleasure and great care acoustics roesner udo ML_DMA DC75 UK 200417 ...

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