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TRACE ELLIOT ACOUSTIC P.A, Operating Instructions Manual

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TRACE ELLIOT ACOUSTIC P.A Operating Instructions Manual Download Page 4

Inputs
There are 2 x inputs on each acoustic channel, these are PIEZO and ACTIVE. 
The ACTIVE input is for use with any acoustic instrument that has a built in preamplifier
within the instrument itself and is designed to suit the lower impedance and higher
headroom that these preamps require.
The PIEZO input has a very high input impedance to suit that of any type of  piezo
transducer, and should be used where there is no preamp between instrument and
amplifier. This will give the best possible quality of tone from the instrument. Should you
have an ACTIVE instrument that has a very low signal output then it may be better for you
to also use this input as it has a far greater signal sensitivity.

Gain Control
The GAIN control is used to set the level of signal through the channel. This should be set
so that the PEAK LED at the bottom of the channel just flashes on with playing peaks. It is
important to set this correctly as it ensures that you achieve the best 
possible signal to noise ratio without adding distortion from signal clipping.
A better way to set this control accurately is to depress the SOLO button ( just above the
channel slider ) and read out the playing signal level on the Right and Left Bargraphs on
the right hand side of the mixer. Set the GAIN control so that the bargraphs just go into
the red on playing peaks.
After adjusting the EQ on the channel it may be necessary to readjust the GAIN 
control to compensate for any increase or decrease in signal level provided by the 
equalisation.

Equalisation - High, Mid, Low
The equalisation on the ACOUSTIC CHANNELS is specifically tailored to best suit acoustic
instruments, particularly acoustic guitar.
The 3 x EQ controls each provide 12dB of cut and boost at the following frequencies: 
HIGH - 16kHz, MID - 630Hz, LOW - 100Hz.

Notch Filter
The NOTCH filter is a special circuit that removes a narrow band of frequencies from the
amplified signal in order to minimise the possibility of feedback at low frequencies due to
the body resonance of the instrument. This frequency ‘Notch’ is tuneable with the notch
control within the range 50Hz to 250Hz and is switched in and out of circuit with the
IN/OUT switch just below and to the right of the NOTCH control.

5

Summary of Contents for ACOUSTIC P.A

Page 1: ...O P E R A T I N G I N S T R U C T I O N S D E D I C A T E D A C O U S T I C P A S Y S T E M ACOUSTIC P A ...

Page 2: ...ely self contained and be used as a full system catering for acoustic instruments vocals keyboards and backing tapes if required all with built in digital effects adjustable in level for each individual mixer channel With the MONO MIX output that can be used to drive monitors everything that would be required in a modest live situation is catered for Secondly for the single performer or Duo entert...

Page 3: ... OUT _ _ _ R L GAIN HIGH MID LOW NOTCH AUX 2 PAN DSP AUX 1 IN OUT _ _ _ R L GAIN HIGH MID _ _ MID FREQ LOW _ AUX 2 PAN DSP AUX 1 R L 200 8k 2k GAIN HIGH MID _ _ MID FREQ LOW _ AUX 2 PAN DSP AUX 1 R L 200 8k 2k AUX 2 BALANCE DSP AUX 1 R L AUX 2 DSP AUX 1 R L BALANCE GAIN HIGH MID LOW _ _ _ GAIN HIGH MID LOW _ _ _ HIGH MID LOW _ _ _ HIGH MID LOW _ _ _ HIGH _ LOW _ AUX 2 AUX 1 SOLO SUB LEVEL PHONES P...

Page 4: ...dding distortion from signal clipping A better way to set this control accurately is to depress the SOLO button just above the channel slider and read out the playing signal level on the Right and Left Bargraphs on the right hand side of the mixer Set the GAIN control so that the bargraphs just go into the red on playing peaks After adjusting the EQ on the channel it may be necessary to readjust t...

Page 5: ...ors This control is post fader so that the level of effects set for the channel always stays in the same proportion to the direct signal regardless of the position of the fader Aux 2 Control The AUX 2 control adjusts the level of signal from the channel that is sent to the AUX 2 jack socket for use with an external effects processor This control is also post fader as explained above Pan Control Th...

Page 6: ...x Inputs the XLR input is a balanced low impedance input to suit most kinds of microphone The JACK input is a line level input to suit such things as keyboard tape CD etc This channel is a fairly standard channel as found on most mixers The MIC CHANNELS on the TRACE ACOUSTIC PA are the only conventional channels on this mixer Gain Control The GAIN control is used to set the level of signal through...

Page 7: ... swept between 200Hz and 8kHz DSP Aux 1 Control The DSP AUX 1 control adjusts the level of signal from the channel sent to the internal DIGITAL EFFECTS PROCESSOR DSP and also the level of signal sent to the AUX 1 SEND jack socket for use with an external effects processors This control is post fader so that the level of effects set for the channel always stays in the same proportion to the direct ...

Page 8: ... the CHANNEL FADER around the 0dB Green Line position this will give you maximum signal through the mixer and also minimum background noise As a general rule keep the channel faders as high as possible and the MASTER FADERS as low as possible for the best signal to noise ratio STEREO CHANNELS The STEREO CHANNELS are once again special channels unique to this mixer and provide facilities not usuall...

Page 9: ...io without adding distortion from signal clipping A better way to set this control accurately is to depress the SOLO button just above the channel slider and read out the stereo signal level on the Right and Left Bargraphs on the right hand side of the mixer Set the GAIN control so that the bargraphs just go into the red on signal peaks After adjusting the EQ on the channel it may be necessary to ...

Page 10: ...ition of the fader Aux 2 Control The AUX 2 control adjusts the level of signal from both the left and right channel that is sent to the AUX 2 jack socket for use with an external effects processor This control is also post fader as explained above Balance Control The BALANCE control works like a conventional balance control on a Hi Fi i e it balances the stereo signal between the left and right ou...

Page 11: ...ns from external effects processor units or they can be used as two additional stereo channels for keyboards drum machines MIDI voice modules tape or CD players The input sensitivity of these channels has been set to be suitable for the above uses and consequently no GAIN control is provided Being STEREO CHANNELS these have 2 x inputs LEFT MONO and RIGHT Plugging a signal into the LEFT MONO input ...

Page 12: ...l The SOLO button also routes the channel signal to the PHONES output in stereo to allow the signal to be monitored individually from all other signals going through the mixer If no SOLO buttons are depressed then the PHONES output monitors the Left and Right MASTER outputs The SOLO facility is pre fader so that you can monitor the signal into the channel even when the channel fader is fully down ...

Page 13: ...e Hall Room and Plate the Bright Dark push button provides two options on each of the 16 decay lengths Bright is as it sounds a Bright reverb with plenty of top end sparkle whereas Dark is a highly damped or Dark reverb type When the Delay group of effects is selected then the Bright Dark push button actually selects different types of effects including delay These are all listed out below along w...

Page 14: ...everb types Delay Settings BRIGHT DARK 1 100 msec Gated Reverb 50 msec Single Repeat 2 150 msec Gated Reverb 100 msec Single Repeat 3 200 msec Gated Reverb 150 msec Single Repeat 4 250 msec Gated Reverb 200 msec Single Repeat 5 300 msec Gated Reverb 300 msec Single Repeat 6 350 msec Gated Reverb 400 msec Single Repeat 7 400 msec Gated Reverb 500 msec Single Repeat 8 450 msec Gated Reverb 600 msec ...

Page 15: ...specific channels own Aux 1 and Aux 2 control These combine together to provide the signal sent to the external effects unit from the Aux 1 and Aux 2 jack sockets The overall level of signal sent to the external effects unit is adjusted using the Aux 1 and Aux 2 Master level controls located directly below these controls Master Left and Right Faders The Master Faders are located close together as ...

Page 16: ...ers and routes these frequencies to the SUB OUT socket This allows the internal power amplifiers and speakers to be driven considerably harder as they no longer have to deal with the low frequencies and in conjunction with the MONO SUB BASS unit provides a very powerful system Sub Level Control A SUB LEVEL control is provided to balance the volume of the sub bass unit against the internal power am...

Page 17: ...m the channel which have their solo buttons selected Mono Mix Output The MONO MIX OUTPUT provides a mono version of the mixer channel levels and effects that has its own MONO MIX LEVEL fader adjustable independently of the master faders This is intended as a monitor output to be used as a simple yet convenient foldback system It is an exact copy of the master outputs but in mono and is therefore i...

Page 18: ... 1k ohms Nominal level 0dBu L R Master Impedance 1k ohms Nominal level 0dBu Mono Mix Impedance 1k ohms Nominal level 0dBu Sub Out Impedance 1k ohms Nominal level 0dBu Phones Impedance to suit phones over 200 ohms Power 250mW Master EQ High 12dB 12 5kHz Low 12dB 60Hz Output Power Stereo top end 50 Watts RMS per side into 2 x 5 speakers crossed over above 350Hz Mono Bass 200 Watts RMS into 2 x 10 sp...

Page 19: ...rivers SICHERHEITS ANWEISUNGEN Warnung Zum fortdauernden Schutz gegen Feuerrisiken die Sicherungen nur durch Sicherungen desselben Typs und derselben Nennleistung austauschen Um das Risiko von Feuer oder Elektroschock zu reduzieren dieses Gerät keinem Regen und keiner Feuchtigkeit aussetzen Im Fall eines vermuteten Defekts muß dieses Gerät einem qualifizierten Service Techniker übergeben werden Di...

Page 20: ...ämän laitteen johdot on koodattu seuraavasti Vihreä keltainen maa Sininen neutraali Ruskea jännitteinen Koska tämän laitteen verkkojohdon värit saattavat erota liittimen värimerkinnöistä toimi seuraavasti Vihreä keltainen johto täytyy yhdistää pistokkeen liittimeen joka on merkattu E llä tai maattosymbolilla tai joka on väriltään vihreä tai vihreä ja keltainen Sininen johto täytyy yhdistää liittim...

Page 21: ...ontro il rischio di incendi sostituire i fusibili soltanto con altri dello stesso tipo e potenza Non esporre l attrezzatura alla pioggia o umidità per ridurre il rischio di incendi o shock elettrici Se si sospetta una malfunzione consultare sempre un tecnico esperto in questo settore L attrezzatura deve essere messa a terra I fili sono stati colorati secondo il codice seguente Giallo e verde Terra...

Page 22: ...ι χρω µα Μπλε πρε πει να συνδε εται στον ακροδε κτη που ει ναι σηµειωµε νος µε το γρα µµα Ν η το Μαυ ρο χρω µα Το συ ρµα που ε χει χρω µα Καϕε πρε πει να συνδε εται µε τον ακροδε κτη που ε ιναι σηµειωµε νος µε το γρα µµα L η το Κο κκινο χπω µα Εα ν ξρησιµοποιει ται πρι ζα Α 13 αµπε ρ ΒS1363 θα πρε πει να εϕαρµο ζεται ασϕα λεια των 13 αµπε ρ η εα ν χρησιµοποιει ται οποιοδη ποτε α λλο ει δος πρι ζας...

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