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HiFlex
HYBRID CONFERENCING SOLUTIONS
Users Guide
HF-100
SP Controls, Inc.
930 Linden Avenue
South San Francisco, CA 94080
Toll Free in US: (877) 367-8444
Tel: (650) 392-7880
Fax: (650) 392-7881
info@spcontrols.com
UPDATED: September, 2021 • PN: DOC-000032-01a

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Summary of Contents for SP Controls Hiflex HF-100

  • Page 1 HiFlex HYBRID CONFERENCING SOLUTIONS Users Guide HF-100 SP Controls, Inc. 930 Linden Avenue South San Francisco, CA 94080 Toll Free in US: (877) 367-8444 Tel: (650) 392-7880 Fax: (650) 392-7881 info@spcontrols.com UPDATED: September, 2021 • PN: DOC-000032-01a...
  • Page 2 Therefore, you must treat the so ware like any other copyrighted material (e.g., a book or sound recording). Every eff ort has been made to ensure that the informa on in this manual is accurate. SP Controls, Inc., is not responsible for prin ng or clerical errors.
  • Page 3: Table Of Contents

    Contents Contents ....................3 Introduction ..................6 Introducing the HiFlex HF-100 ................ 6 Back View ....................... 6 Front View ....................... 6 Connections ..................... 7 Installation ..................8 Microphone Selection ..................8 Microphone Spacing ..................8 General Strategy ..................... 8 Walls ....................... 9 Unused Microphone Ports................9 Speaker Confi...
  • Page 4 Off set Region 1 ...................... 19 Off set Region 2 ...................... 19 Energy ........................19 Attack & Decay ...................... 19 Presets ......................20 Output Device Settings ................. 20 Master Gain....................21 Assisted Listening / Line Output Gain ............21 Page 4 SP Controls, Inc.
  • Page 5 [ This page is inten onally blank. ] HF-100 Users Guide Page 5...
  • Page 6: Introduction

    Introducing the HiFlex HF-100 Introducing the HiFlex HF-100 Congratula ons and thank you for purchasing this SP Control’s HiFlex HF-100 Audio Bridge! The HF-100 is a state-of-the-art four (4) microphone mixer with digital signal processing (DSP) conver ng the mixed mic inputs to a single USB microphone audio output. Addi onal features of the HF-100 include a line level output for assisted listening and an audio engineer’s...
  • Page 7: Connections

    Connections Connections Microphones. Analog microphones connect to the HF-100 using 3-pin screw terminals, one microphone per terminal block. See the sec on below en tled, “Connec ng the Microphones”, for more details about connec ng balanced and unbalanced microphones. Phantom Power. When phantom power is required for a microphone, depress the DIP switch corresponding to the necessary microphone.
  • Page 8: Installation

    The HF-100 accepts up to four (4) analog microphone inputs. Although the HF-100 will support both dynamic and condenser types of microphones, condenser style ceiling microphones with a cardiod pickup pa ern are most common. Here is a list of ceiling microphones tested by SP Controls: Manufacturer Model...
  • Page 9: Walls

    the end of the microphone that is at a ceiling height of 10’. The be er the acous cs, the larger the bubble. Space each mic apart such that you have small overlap and no voids at the typical height of people speaking. Walls Walls To reduce echo from walls it is best to use a direc onal mic to steer the pickup pa ern away...
  • Page 10: Pin-Out, Unbalanced Microphones

    The HF-100 provides a “Line Output” port that meets this requirement. The 3.5mm jack is located on the back of the unit as shown in the graphic below. Page 10 SP Controls, Inc.
  • Page 11: Connecting Usb Audio To Host Computer

    Should you have the need to adjust the volume of the line output audio, use the HF-1xx Applica- on Se ngs so ware to adjust the gain level. See the sec on in this guide en tled, “So ware Confi gura on” for more details. Headphone and Headphone Volume Control Headphone and Headphone Volume Control Our engineers discovered early in this product design that we had no way to adequately hear...
  • Page 12: Selection Of Microphone By Operating System

    Selec on of Microphone by Opera ng System Selec on of Microphone by Opera ng System Microso Windows 10. When an HF-100 is connected to a Host computer Windows will be off ered a “HiFlex HF-100 Audio Bridge”. Start menu > Se ngs >...
  • Page 13: Software Confi Guration

    To install the HF-1xx Applica on Se ngs program, download and run the HF-1xx Applica on Se ngs setup u lity from the SP Controls HF-100 product page. Once the installa on has fi n- ished, you will see an HiFlex SP icon located on your desktop.
  • Page 14: Application Overview

    OUTPUTS Microphone Inputs Microphone Inputs In this sec on, microphones are enabled or disabled, gain levels are set for individual micro- phones, and the mixed signal is adjusted as necessary before the audio processing block. Page 14 SP Controls, Inc.
  • Page 15: Audio Processing Blocks

    Audio Processing Blocks Audio Processing Blocks The HF-100 contains a powerful digital signal processing (DSP) audio chip. “Bandpass fi ltering” can be enabled to remove certain unwanted frequencies, such as HVAC fan noise or fl ourescent light hum. Volume can be automa cally risen or lowered depending upon the incoming sound levels.
  • Page 16: Mixed Microphone Gain

    fi lter. As shown in the graphic above, the high bandpass fi lter is denoted in Red and the low bandpass fi lter in Green. High Bandpass Filter For the high bandpass fi lter, the system will pass only those signals above the high bandpass Page 16 SP Controls, Inc.
  • Page 17: Low Bandpass Filter

    frequency. Any frequencies below this frequency will be quickly a enuated un l the sound is en rely removed. To modify this value, click next to the high bandpass frequency and enter a new frequency (in Hz). Once entered, click into another fi eld or press the tab key to aff ect the change.
  • Page 18: General Charting Overview

    A threshold is a key infl ec on point. It’s a key audio level in which some change needs to happen to the incoming sound. In the example graphic above, when the incoming sound is Page 18 SP Controls, Inc.
  • Page 19: Compression Ratio 0

    louder than -50dB the output audio will begin to be compressed or lowered. For this example, there is a second threshold at -20dB in which the output audio will be compressed even more. This second threshold is o en used to reduce clipping. Compression Ra o 0 Compression Ra o 0 is the slope of the line to the le of Threshold 1.
  • Page 20: Presets

    Click in the Preset box or on the appropriate down poin ng carat to select the preset. Page 20 SP Controls, Inc.
  • Page 21: Output Device Settings

    Output Device Settings Output Device Settings This sec on deals with the gain levels of the audio being sent to HF-100’s output devvices, a er the Bandpass and DRC audio process blocks. Master Gain Master Gain The Master Gain se ng is a gain adjustment that is applied a er all the other DSP processing blocks.
  • Page 22 © 2021 SP Controls, Inc. All rights reserved. SP Controls, Inc. 930 Linden Avenue South San Francisco, CA 94080 info@spcontrols.com...

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