Harman dbx 676 Owner'S Manual Download Page 5 | Manualshive

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Harman dbx 676 Owner'S Manual Download Page 5

3

676

TU B E M I C

CHAN N E L STR I P

Features

• Discrete, Class A, High-Voltage Tube Microphone Preamplifier

• 60 dB of Preamplifier Gain

• +48V Phantom Power

• 20 dB Pad

• Polarity Invert Switch

• 80 Hz Low Cut Switch

• Pre-Tube Gain & Post-Tube Attenuation Controls for Varying the Amount of Tube Drive

• 3-Band Semi-Parametric EQ with Sweepable Mid Frequency

• Built-In 162SL-Style Compressor

• dbx PeakPlus

™

Limiter

• LED Backlit VU Meter with Selectable Meter Source

• Front-Panel Hi-Z Instrument Input

• 1/4˝ Preamp Insert Jack

• 1/4˝ Compressor Sidechain Jack

• Electronically Balanced XLR & TRS Preamp & Compressor / Limiter Outputs

• Slot for Optional AES / S/PDIF Digital Output Card

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Summary of Contents for dbx 676

Page 1: ...Owner s Manual 676 TUBE MIC CHANNEL STRIP...

Page 2: ...connection with the sale of this product In no event shall dbx or its dealers be liable for special or consequential damages or from any delay in the performance of this warranty due to causes beyond...

Page 3: ...Section 10 EQ Example Settings 11 Setting The EQ 11 The Compressor Limiter Section 12 Compressor Limiter Example Settings 16 Setting The Compressor Limiter 17 Parallel Compression 18 Application Guid...

Page 4: ...keep the mix clean and maximize headroom by eliminating subsonic plosives hum and microphone vibration noise The 676 s VCA compressor design was taken from the revered dbx 162SL and delivers smooth l...

Page 5: ...Attenuation Controls for Varying the Amount of Tube Drive 3 Band Semi Parametric EQ with Sweepable Mid Frequency Built In 162SL Style Compressor dbx PeakPlus Limiter LED Backlit VU Meter with Selecta...

Page 6: ...COMPRESSOR LIMITER output can be used for balanced or unbalanced connections Connecting to both XLR and 1 4 outputs simultaneously as shown in the below diagram is perfectly acceptable as long as the...

Page 7: ...and higher POST ATTENUATION settings For a tone with more harmonics and warmth use higher GAIN settings with a lower POST ATTENUATION setting 6 Once microphone selection and position have been decide...

Page 8: ...s is the EQ section see The EQ Section on page 10 for further information 3 Meter This LED backlit VU meter displays input signal level output signal level or the amount of gain reduction applied by t...

Page 9: ...rallel Compression on page 18 for additional information 5 Compressor Sidechain Insert Connector Connect an insert cable to this unbalanced connector to patch in another device for processing the sign...

Page 10: ...meant to be used in conjunction with the GAIN control For cleaner tones leave this control fully clockwise and raise the GAIN control until the desired level is achieved For richer tones lower this c...

Page 11: ...ENABLE 20dB PAD 48V POLARITY INVERT 80 Hz LOW CUT 0 GAIN dB 55 25 50 40 POST TUBE ATTENUATION dB 0 30 5 15 LOW dB 15 15 0 MID dB 15 15 0 HIGH dB 15 15 0 200 THRE 40 20 30 INSTRUMENT INPUT ENABLE CLASS...

Page 12: ...LLOW 44 1 kHz 4 2 18 10 OFF THRESHOLD dB 40 0 20 10 20 30 10 RATIO 1 1 1 1 5 1 3 1 2 1 1 2 1 8 1 MAKEUP GAIN dB 20 20 0 10 10 INSTRUMENT INPUT ENABLE CLASS A VACUUM TUBE WITH HIGH VOLTAGE GAIN METER S...

Page 13: ...AUTO RELEASE dB sec 4k 10 400 1 5k 70 ATTACK dB msec 400 80 200 10 1 4 2 THRESHOLD dB 40 0 20 10 20 30 10 RATIO 1 1 1 1 5 1 3 1 2 1 1 2 1 8 1 M 20 10 INSTRUMENT INPUT ENABLE CLASS A VACUUM TUBE WITH H...

Page 14: ...on What it really comes down to is how you prefer to work and which workflow allows you to best create your artistic vision The 676 compressor can be effectively used to apply the first round of tran...

Page 15: ...oaching the currently set threshold and is in the OverEasy region Some minor compression will begin to be applied in this OverEasy region and full compression will be applied if the signal level does...

Page 16: ...nals with excessive energy in the lower frequency region such as a bass guitar bass synth or kick drum When enabled this feature allows for faster attack times and higher compression ratios with less...

Page 17: ...iter off Note that the limiter will also be bypassed when the COMP LIM ENABLE button is disengaged The further the LIMITER control is turned counter clockwise the lower the threshold will be This limi...

Page 18: ...Hz GREEN 48kHz YELLOW 44 1 kHz 4 2 18 10 OFF THRESHOLD dB 40 0 20 10 20 30 10 RATIO 1 1 1 1 5 1 3 1 2 1 1 2 1 8 1 MAKEUP GAIN dB 20 20 0 10 10 INSTRUMENT INPUT ENABLE CLASS A VACUUM TUBE WITH HIGH VOL...

Page 19: ...atch the amount of gain reduction being applied Or audition the compressed vs bypassed signals by toggling the COMP LIM ENABLE button and set it so that the two signals are closely matched 8 If the si...

Page 20: ...used in today s audio production It is a particularly popular technique for drums vocals and acoustic guitar but it can be used on anything When applying parallel compression the idea is to have the c...

Page 21: ...x A signal processor can be inserted in the PREAMP INSERT Here you can connect a favorite compressor EQ or any other signal processor you wish to insert after the preamp PEAK EQ ENABLE COMP LIM ENABLE...

Page 22: ...to the musician s headphone mix A signal processor can be inserted in the PREAMP INSERT Here you can connect a favorite compressor EQ or any other signal processor you wish to insert after the preamp...

Page 23: ...y PEAK EQ ENABLE COMP LIM ENABLE NARROW CONTOUR SIDECHAIN ENABLE OVEREASY DIGITAL OUTPUT POWER 20dB PAD 48V POLARITY INVERT 80 Hz LOW CUT 0 PEAK LIMIT GAIN dB 55 25 50 40 POST TUBE ATTENUATION dB 0 30...

Page 24: ...sted to optimize the signal level feeding the 676 for best noise and compressor performance Application Notes This application requires that a normalled patch bay such as the dbx PB 48 be used This al...

Page 25: ...dio Path Instrument Input Compresor Output In Out Preamp Output 48V Phantom Power Mic Instrument Switch 20dB Pad Parametric EQ Audio Transformer Compressor Detector Tube Gain Stage 1 Tube Gain Stage 2...

Page 26: ...NPUT LEVEL dB OUTPUT LEVEL dB 15 10 5 0 5 15 20 10 1 1 Unity 2 1 4 1 1 20 1 RED Above Threshold GREEN Below Threshold Rotation Point Threshold 1 1 2 1 4 1 1 15 10 5 0 5 15 20 10 INPUT LEVEL dB OUTPUT...

Page 27: ...SOURCE DEVICE OUTPUT TO NEXT DEVICE INPUT TIP HOT SLEEVE GROUND HOT SLEEVE TIP HOT SLEEVE GROUND TRS PHONE TO TS PHONE FROM SOURCE DEVICE OUTPUT TO NEXT DEVICE INPUT TIP HOT RING COLD SLEEVE GROUND H...

Page 28: ...ch will impart different tonal and sonic qualities Although the 676 ships with a tube that suits various applications well finding the tube which imparts the qualities which best suit your taste can m...

Page 29: ...he factory there will be two fuses in this drawer The fuse located at the rear drawer position is the one currently being used in the circuit The fuse located in the front drawer position is the provi...

Page 30: ...28 676 TUBE MIC CHANNEL STRIP Specifications TBD...

Page 31: ..._____________________________________________________________________________________________________________________ __________________________________________________________________________________...

Page 32: ...Phone 801 566 8800 Website dbxpro com Support dbxpro com en US support dbx Professional Products is a registered trademark of Harman 676 Owner s Manual Rev A 2015 Harman All rights reserved...

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