SP Controls Hiflex HF-100 Manuale utente

Users Guide

HF-100

UPDATED: September, 2021 • PN: DOC-000032-01a

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

[email protected]

HYBRID CONFERENCING SOLUTIONS

HiFlex

Page 2 SP Controls, Inc.

Trademark Informaon

SP Controls®, the “SP >” logo or icon, and the names and marks associated with SP Controls’ products are

trademarks and/or service marks of SP Controls, Inc., and are registered and/or common-law marks in the

United States and various other countries.

All other trademarks are the property of their respecve owners.

Patent Informaon

The accompanying product is protected by one or more U.S. and foreign patents and/or pending patent

applicaons held by SP Controls, Inc.

Customer Feedback

We are constantly working to improve the quality of our documentaon, and we would appreciate your

feedback. Please send email to info@spcontrols.com.

SP Controls, Inc.

930 Linden Avenue

South San Francisco, CA 94080

No part of this document may be reproduced or transmied in any form or by any means, electronic or

mechanical, for any purpose, without the express wrien permission of SP Controls, Inc.

Under the law, reproducing includes translang into another language or format. As between the par-

es, SP Controls, Inc., retains tle to and ownership of all proprietary rights with respect to the soware

contained within its products. The soware is protected by United States copyright laws and internaonal

treaty provision. Therefore, you must treat the soware like any other copyrighted material (e.g., a book or

sound recording).

Every eﬀort 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.

Informaon in this document is subject to change without noce.

Page 3HF-100 Users Guide

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 Conﬁguration .................................................................................... 9

Speaker Placement.......................................................................................... 9

Connecting the Microphones ......................................................................... 9

Pin-Out, Balanced Microphones ..................................................................... 9

Pin-Out, Unbalanced Microphones ............................................................... 10

Phantom Power.............................................................................................. 10

Phantom Power, Dip Switch Settings............................................................ 10

Assisted Listening Devices .......................................................................... 10

Connecting USB Audio to Host Computer .................................................. 11

Selection of Microphone by Operating System............................................. 12

Selection of Microphone by Video Conferencing Software........................... 12

Power .............................................................................................................. 12

Software Conﬁguration..................................................................13

Connecting to the HF-100 Update Port to Host PC .................................... 13

Installing the Software .................................................................................. 13

Application Overview .................................................................................... 14

Microphone Inputs......................................................................................... 14

Audio Processing Blocks............................................................................... 15

Output ........................................................................................................... 15

Real Time Adjustments ................................................................................. 15

Microphone Input Settings ........................................................................... 15

Enabling / Disabling Microphones................................................................. 15

Phantom Power............................................................................................. 15

Microphone Gain........................................................................................... 15

Page 4 SP Controls, Inc.

Contents (continued)

Mixed Microphone Gain ................................................................................ 16

Audio Processing Blocks ............................................................................. 16

Bandpass Filters ........................................................................................... 16

High Bandpass Filter .............................................................................................16

Low Bandpass Filter ..............................................................................................17

Dynamic Range Compression (DRC) Settings ............................................. 17

General Charting Overview ...................................................................................18

Threshold 1 and Threshold 2................................................................................. 18

Compression Ratio 0 .............................................................................................19

Compression Ratio 1 .............................................................................................19

Compression Ratio 2 .............................................................................................19

Oﬀset Region 1...................................................................................................... 19

Oﬀset Region 2...................................................................................................... 19

Energy ...................................................................................................................19

Attack & Decay ...................................................................................................... 19

Presets.......................................................................................................... 20

Output Device Settings ................................................................................. 20

Master Gain................................................................................................... 21

Assisted Listening / Line Output Gain.......................................................... 21

Page 5HF-100 Users Guide

[ This page is intenonally blank. ]

Page 6 SP Controls, Inc.

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

headphone output for real-me audio processing and gain adjustments.

Designed speciﬁcally for classroom, lecture halls, and conference facilies, the HF-100 is a

valuable and unqiue tool that allows remote parcipants in a conference call to clearly hear

those speaking in the host room.

Getting to Know the HF-100

The graphic below points out key aributes of the HF-100.

Back View

Front View

Introduction

Phatom Power

DIP Switch

PHANTOM

+48VDC

MIC1

[]

MIC2

[]

MIC3

[]

MIC4

[]

LINE

OUT

ETHERNET

UPDATE

24 VDC / 1A

OFF

RESET

USB

OUTPUT

HEADPHONE

Microphone

Connection Ports Assisted Listening

Connection

Power &

LED Indicator

Application Connection

& Reset

Ethernet Port

Host Computer

Connector

Headphone +

Headphone Volume

Page 7HF-100 Users Guide

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. Down means power is enabled for the mic. For

more informaon, see the secon below entled, “Phantom Power”.

Host Computer. Using a USB Type-C to USB Type-A cable, connect the HF-100 from the USB

Output port to the Host Computer. No soware is required to be installed on the host computer

to use this product in its default conﬁguraon.

Power. Connect the DC power supply to the locaon, “24VDC”, and the other end to your

110V/VAC power socket. The system LED will illuminate and blink Green when power is applied.

Assisted Listening Connecon. The Assisted Listening Connecon “Line Output” is used to send

combined near side and remote aendee audio to an assisted listening transmier. The gain or

volume level of this port may be adjusted using the HF-1xx Applicaon Sengs soware. See

the secon, “Soware Conﬁguraon”, for more informaon on this gain adjustment.

Applicaon Connecon & Reset. This connecon is used to modify the ﬁrmware of the HF-

100 or to modify the HF-100 behavior using the HF-1xx Applicaon Sengs soware. This port

requires a USB Mini-B to USB Type-A cable. The reset buon is used when uploading ﬁrmware

soware updates. For more informaon on this applicaon, see the secon entled “Soware

Conﬁguraon”.

Ethernet. The Ethernet port is not being used at this me.

Headphone and Headphone Volume Control. Headphones are used to hear the sound that

would be normally heard by remote parcipants via video conferencing soware. Eﬀects of HF-

100 seng changes using the HF1xx Applicaon Sengs soware can be heard in real-me. For

more informaon on this applicaon, see the secon entled “Soware Conﬁguraon”.

Page 8 SP Controls, Inc.

Installation

Microphone Selection

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 Pattern

Audix M55 Series Ceiling, Cardioid, High Output, 18-52V Phantom Power

8’ - 10’ Above Surface, 4 per 30’x30’ room.

Microphone Spacing

General Strategy

From a technical standpoint, one must visualize a polar paern as the pickup on a microphone.

However, our Audix representave simplied the design by imagining a 10’ diameter “bubble” on

8-10

Feet

18-20

Feet

18-20

Feet

8-10

Feet

from

Walls

WARNING: Remove/unplug power prior to connecng microphones or when changes to

phantom power sengs.

Page 9HF-100 Users Guide

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

To reduce echo from walls it is best to use a direconal mic to steer the pickup paern away

from the wall or provide adequate space to reduce any potenal echo. Some manufacturers,

such as Audix, have hardware which direct the normal down-poinng mic back toward the cen-

ter of the room just for this purpose.

Unused Microphone Ports

Disable any microphone ports not being used by the HF-100. See the secon entled, “Soware

Conﬁguraon” for more details.

Speaker Conﬁguration

When conﬁguring an audio system for classroom and conference room remote connecons,

sound from the Host Computer should be routed to the inroom speakers. This is done so remote

parcipants to the video conference can clearly hear remote parcipants. The placement of the

speakers is essenal to reduce any potenal feedback from the microphones.

Speaker Placement

Speakers should be installed between microphone placements. Pay parcular aenon to

the pickup paern of the microphone so that speakers do not drive sound directly into the

microphone diaphram. Microphones will pickup some audio from the speakers but great care

should be exercised to limit excessive feedback.

Connecting the Microphones

For installaon convenience, microphones are connected to four (4) separate screw terminal

blocks as shown in the image below.

Pin-Ou

t, Balanced Microphones

Be sure to note the balanced audio wiring, (+) on lemost pin 1, (-) on center most pin 2, and

ground on pin 3.

WARNING: Disable phantom power when using dynamic microphones.

Sudden power injected into these types of microphones may cause damage

to the mic.

Page 10 SP Controls, Inc.

Pin-Out, Unbalanced Microphones

For single ended, unbalanced microphones connect the (+) on lemost pin 1 and (-) on the

center most pin 2. Next, create a short jumper between (-) and Ground, pin 3.

Phantom Power

Phantom Power, Dip Switch Sengs

Condenser microphones require power. Power can be provided by internal baeries or supplied

by the source device via a concept called “Phantom Power”. The HF-100 oﬀers a feature which

allows users to “enable” power for any or all of the microphones connected by means of a DIP

“piano” style switch.

Press down to enable phantom power on the switch which corresponds to the microphone

connecon which needs the power. In the image above, all microphones have phantom power

disabled.

Assisted Listening Devices

Oen, schools are required to provide ADA Assisted Listening devices to augment the sound

reinforcement in the room for those students with certain disabilies. 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.

Jumper

WARNING: POWER OFF HF-100 BEFORE TO MAKING PHANTOM POWER CHANGES

WARNING: Disable phantom power when using dynamic microphones.

Power injected into these types of microphones may cause damage

to the mic.

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