-192 HARMONICALLY ENHANCED DIGITAL DEVICE OPERATOR'S MANUAL Version 1.2 CRANE SONG LTD. 2117 East 5th Street Superior, WI 54880 USA tel: 715-398-3627 fax: 715-398-3279 www.cranesong.com ©2000, 2009 Crane Song,LTD. Subject to change without notice. Printed in the U.S.A.
TABLE OF CONTENTS INTRODUCTION PAGE ........................................... 2 PANEL REFERENCE ..................................... CONTROL DESCRIPTION 3 .............................. 4 THE PROCESS .............................................. 5 APPLICATIONS ............................................. 6 PROCESS BLOCK DIAGRAMS SPECIFICATIONS ....................... 7 ......................................... 9 REGISTRATION FORM ...................................
IMPORTANT SAFETY INSTRUCTIONS 1. Read these instructions 2. Keep these instructions 3. Heed all warnings 4. Follow all instructions 5. Do not use this apparatus near water 6. Clean only with dry cloth 7. Install in accordance with the manufacturer's instructions 8. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat 9.
PAGE 2 INTRODUCTION HEDD, short for harmonically enhanced digital device, is a technological break through in signal processing. HEDD is engineered to provide musically pleasing sound with the capability of generating tube/analog sounds in the digital domain. HEDD gives any user who works with digital the ability to sound less digital and more analog.
PANEL REFERENCE PAGE 3 20 bit dither no dither procress controls 16 bit dither Select Sample Rate Digital Source In/Out Meter Reset Power Switch 5
PAGE 4 THE CONTROLS SAMPLE RATE SWITCH The A/D clock rate can be set from 44.1Khz to 192KHz or an external WC reference. The units taht were shipped going to 96k only will defult to 44.1K if rates above 192k are selected. When a valid word clock is applied and WC is selected a red light next to the switch will light indicate lock. If lock is lost, HEDD-192 will default to 44.1Khz and the light will be off. Whenever the sample rate is changed, the A/D convertor is re calibrated.
PROCESS SWITCH The process switch selects whether the signal processor is attached to the D/A convertor, A/D convertor, is configured for digital in - digital out, or analog in - analog out. An analog generated dither source is available to the A/D convertor and to the digital in - digital out modes. The dither is enabled by selecting the process in the 16 or 20 bit groupings THE PROCESS The harmonic process runs 24 bit internal. The digital inputs and outputs are also 24 bit.
It is also possible to add this dither to an existing audio source. Dither can be added by running digital in, digital out and selecting the part of the Process switch that is labeled 16 bit or 20 bit depending on what you want to dither to. To disable the dither run the unit where the process switch is labeled 24 bit. This will record correctly on a 16 bit recorder EXTERNAL WC SYNC The external WC connections are for A/D convertor synchronization with an external world.
HEDD AS A MASTER CLOCK Hedd will make a very good master clock, however there are two modes where it will not work as a master clock. This is with16 and 20 bit dither enabled and running HEDD in the DIGI mode, digital - in digital - out.
PAGE 7 PROCESS BLOCK DIAGRAMS 10
PAGE 8 PROCESS BLOCK DIAGRAMS (CONT.
PAGE 9 SPECIFICATIONS Analog Output: Transformer-less balanced floating stereo output with XLR connectors. Digital zero is +16dBm. This allows 12 db of headroom above a +4dBm 0 VU. Gain adjust trims are on the back panel Analog Input: Transformer-less balanced floating stereo with XLR connectors. Digital zero is +16dBm. This allows 12 db of headroom above a +4dBm 0 VU.
Hedd upgrades There are two parts to this First, the D/A and the A/D converter; this requires some modification to the main pcb. How much depends on the version of the pcb and when it was built. The best way to find out is to open the cover and look for the revision number. It is possible to change only the D/A portion. The new D/A is a major improvement in sound qualitily. However depending on some unpredictable things it may be necessary to do some of the pcb modifications.
jumper options for the D/A converter Rev 5 JUMPER ON = SRC ENABLED THIS IS THE LOW JITTER MODE JUMPER OFF = SRC DISABLED THIS IS THE LOW LATENCY MODE JUMPER ON = THE FILTER HAS A SLOW ROLL OFF JUMPER OFF = THE FILTER HAS A STEEP FAST OFF This is the A/D convertor upgrade for HEDD-192. The jumper positions that are showen are the default settings. If low latency is more important than low jitter you will need to change red jumper to off. The SRC is being used for jitter reduction of externial sources.
CRANE SONG LTD. 2117 E. 5th Street Superior, WI 54880 USA tel. 715-398-3627 fax. 715-398-3279 www.cranesong.com -192 Harmonically Enhanced Digital Device REGISTRATION FORM Please fill out this form and return. It will be used for sending updates and pertinent information as it becomes available. Thank you.
