MANUAL v.8 MORE THAN LOGIC. UNITING ART + ENGINEERING. C O N TAC T email: info@meris.us phone: 747.233.1440 website: www.meris.
TAB LE O F CONTENTS SECTION 1 PG. 1 FRONT PANEL CONTROLS SECTION 2 PG. 2-4 GLOBAL SETTINGS CONFIGURATION MODE SECTION 3 PG. 5-7 CONTROLS IN DEPTH 3a - SIGNAL FLOW OVERVIEW 3b - KEYS AND SCALES 3c - PITCH CORRECTION AND GLIDE CONTROL 3d - TIME DIVISION CONTROLS SECTION 4 PG. 8-10 EXPRESSION JACK MODES IN DEPTH 4a - EXPRESSION PEDAL 4b - TAP SWITCH 4c - 4 BUTTON PRESET SWITCH 4d - MIDI SECTION 5 PG. 11 TRIGGERING PITCH VALUES WITH A MIDI KEYBOARD SECTION 6 PG.
SECTION 1 - FRONT PANEL CONTROLS Key: Selects key for diatonic harmonies.
SECTION 2 - GLOBAL SETTINGS CONFIGURATION MODE TO START GLOBAL SETTING CONFIGURATION MODE INPUT MODE: 7 +OCT LINE/SY STER EO IN NO S) (TR IN MO +2 OCT 7 +OCT HOLD (L) LED switch on power up (power up takes 3 secs); all of the front panels LEDs will blink 3 times Power cycle to save setting (L) LED indicates MONO (L) LED indicates DRY ACTIVE 2 (R) LED indicates DRY MUTED +2 OCT T (L) INS MIDI TH MIDI TED* MU +2 OCT 7 +OCT EXP Y DRY A CTI V DR PRE AP T SE EXPRESSION MODE: only i
7 +OCT 7 +OCT 2 OCT +2 OCT (L) LED indicates INSTRUMENT LEVEL BUFFERE DB Y LIN E/ SS PA MID RE L ASS BYP AY EL LEV BYPASS MODE: LEVEL NTH SY INSTRU MEN T LINE/SYNTH LEVEL: 7 +OCT +2 OCT (R) LED indicates LINE LEVEL (L) LED indicates BUFFERED BYPASS 7 (R)+OCT LED indicates 7 RELAY +2 OCT BYPASS LE +OCT +2 OCT MIDI THRU ON: Toggle (R) foot switch GLOBAL TEMPO: TRA Toggle (L) foot switch Trails Glide Trails Glide (L) LED indicates MIDI OUT (R) LED indicates MIDI THRU (L) LED indicates
7 (R)+OCT LED indicates 7 RELAY BYPASS +2 OCT LEDs on front panel blink to indicate binary +OCT CHANNEL: MIDI Turn kno b to TRAILS & GLIDE: ax) b at m kno i( (L) foot switch n chan el 1-16 or Om t c n ele s +2 OCT 7 +OCT +2 OCT Trails (OFF) Glide (OFF) LEDs on front panel blink Trails Glide (R) LED indicates per PRESET TEMPO MIDI CHANNELS 9 2 10 3 11 4 12 Trails (OFF) Glide 5(ON) 13 6 14 11 12 Trails (OFF) Glide (ON) 13 14 Trails (ON) Glide (OFF) 4 Trails (ON) Glide (ON) 15 1
SECTION 3A - SIGNAL FLOW OVERVIEW The Hedra features 4 distinct Delay Line Modes: 1. Series Delay + Pitch Feedback (both LEDs off): In this mode, Hedra is configured to have one delay line (520 msec) with three inputs and one output.
3. Dual with Cross-feedback (both LEDs on): I N P UT In this mode, Hedra’s memory is split into two equal stereo delay lines (260 msec). Each delay line has two inputs and one output. Here, the feedback is cross-fed between the left and right channels.
O L IG N A S /6 T DELAY LINE /4 UT P U SECTION 3B - KEYS AND SCALES 8 Along with the front panel Key selection available on Hedra, hold the alt button and turn the Key knob to modulate through and select among the following scales: MELODIC MINOR HARMONIC MINOR LI DE AMOU NT HG DOUBLE HARMONIC MINOR EASTERN PENTATONIC MAJOR MINOR PENTATONIC Major: Semi-tones: 2 - 2 - 1 - 2 - 2 - 2 - 1 Intervals: Root, Major 2nd, Major 3rd, Perfect 4th, Perfect 5th, Major 6th, Major 7th, Octave Minor: S
1/6 5/6 7/8 A RANGE OF MICRO TIME DIVISIONS SECTION 3C - PITCH CORRECTION AND GLIDE CONTROL 1 0 STRICT CORRECTION MELODIC MINOR OFF PIT CH GLI DE LOOSE CORRECTION AMOU N T NO PITCH CORRECTION HARMONIC MINOR Hedra features 3 different pitchDOUBLE corrections settings or a pitch glide amount as listed in the knob HARMONIC graphic below. When Loose Correction MINORis selected, the notes are forced into the current Key and Scale but pitch bending is not removed from the input.
SECTION 4 - EXPRESSION JACK MODES IN DEPTH The Expression Pedal Jack is a multifunction jack that gives you 4 different modes of operation that you can choose in Global Settings Mode: Expression Pedal, Tap Switch, 4 Button Preset Switch, and MIDI. Section 4a. Expression Pedal The expression pedal works by morphing between two complete settings of all of the knob values (even the second layer knob values).
Section 4b. Tap Switch For the Hedra, the external switch controls Tap Tempo and has all of the same functionality as the tap button on the main pedal, this includes swell. As with the main tap switch, if you hold the externally connected tap switch it will enable the volume swell. Section 4c. 4 Button Preset Switch This mode gives you access to and instant enabling of presets 1 through 4, when connected with a proprietary Meris 4 button switch. Section 4d.
SECTION 5 - TRIGGERING PITCH VALUES WITH A MIDI KEYBOARD Using our MIDI I/O, Hedra accepts MIDI Note On and Off messages to hard tune the pitch shift voices to the exact notes you play. Sending a single Note On Message into the Hedra will just tune the Pitch 1 value, sending two Note On Messages will tune Pitch 1 and Pitch 2, and (as expected) sending three Note On Messages will tune all three pitch values. When Note Off messages are received, the corresponding pitch value will mute.
SECTION 8 - PRESET IN DEPTH The Hedra features 16 internal preset locations. The first four presets are accessible by a compatible 4 button footswitch and all sixteen presets are accessible by MIDI Program Change messages. To save a preset simply hold the Alt button. The preset is saved every time you edit the “Alt”/2nd layer knobs, this is how the Hedra is able to keep your sequencer step settings in its memory after a power down.
SECTION 9 - MIDI CC TABLE control change hedra control receive value range transmit value range CC# 04 expression pedal 0 to 127 0 to 127 CC# 09 half speed enable CC# 15 0 to 63 = normal speed 64 to 127 = half speed bypass 0 to 63 = fx bypass 64 to 127 = fx enable tempo (10 msec intervals) 0 to 127 CC# 16 key 0 to 127 0 to 127 CC# 17 micro tune 0 to 127 0 to 127 CC# 18 mix 0 to 127 0 to 127 CC# 19 pitch 1 0 to 127 0 to 127 CC# 20 pitch 2 0 to 127 0 to 127 CC# 21 pitch 3
SECTION 10 - FACTORY RESET Holding down the “Delay Mode” button (or R LED button) on power up resets all of the presets and all of the global settings back to their original factory values. Once the reset is complete, simply recycle the power on the unit. SECTION 11 - TECHNICAL SPECIFICATIONS Conversion 24 bit A/D and D/A DSP 32 bit floating point Sample Rate 48000 Hz Input Impedance 1 Meg Ohm SNR 115dB Frequency Response 20Hz-20kHz Max Input Level +9 dBu (instrument level setting) +12.
