Hoellstern DELTA 6.2-DSP, DELTA 7.2, DELTA 7.2-DSP, DELTA 12.2, DELTA 12.2-DSP User Manual

AUDIO AMPLIFIERS

MANUAL

AUDIO AMPLIFIERS

Hoellstern® audio amplifiers are „engineered and made in
Germany”. This means for you:
designed and manufactured in premium quality. The no-compromise
component selection and a circuit design according to space
technology criteria provide ultimate reliability.

Since January 2004 Hoellstern

®

audio amplifiers have proven their

high reliability under the toughest conditions – live.

Hoellstern® amplifies.
Unusually good – strikingly audiophile – with superior cost-effectiveness.

Amplifier (Option) In x Out

Output Power

8 Ohm 6 Ohm 4 Ohm 2,7 Ohm 2 Ohm 1,6 Ohm 1 Ohm Bridged

DELTA6.2-DSP 2x2 850 W 1,275 W 1,700 W 2,550 W 3,400 W – – 6,800 W

DELTA7.2(-DSP) 2x2 1,000 W 1,325 W 2,000 W 3,000 W 4,000 W 5,000 W – 10,000 W

DELTA12.2(-DSP) 2x2 2,200 W 2,900 W 4,400 W 6,300 W 8,000 W – – 16,000 W

DELTA12.4(-DSP) 4x4 600 W 800 W 1 150 W 1,700 W 2,200 W 2,600 W 4,400 W 8,000 W

DELTA8.4-DSP 4x4 1,300 W 1,700 W

1 700 W

MODE: OFF

– – – –

3,400 W

MODE: OFF

DELTA13.4(-DSP) 4x4 1,300 W 1,700 W 2,600 W 3,800 W

3,400 W

MODE: OFF

– – 7,600 W

DELTA14.4(-DSP) 4x4 1,300 W 1,700 W 2,600 W 3,800 W 5,000 W – – 10,000 W

DELTA20.4(-DSP) 4x4 2,200 W 2,900 W 4,400 W 6,300 W 8,000 W – – 16,000 W

Optionen

Description

-DSP

2 channel amplifier: 2 IN – 2 OUT DSP build-in loudspeaker management

4 channel amplifier: 4 IN – 4 OUT DSP build-in loudspeaker management

DSP-Library

Unique, true-to-original Hoellstern

®

loudspeaker libraries for more than
25 loudspeaker manufacturers.
Including FIR filter and system-specific settings and free user settings.

Software Hoellstern

®

Konfigurator2 – for Windows and Macintosh OS.

AC mains input 180 VAC to 265 VAC, operative from 70 VAC

AC grid current draw

Highly efficient power supply and amplifier technology:
Halved power consumption with 10 A or 16 A of average current draw.

Size and Weight

Width: 19“ – Height: 2 RU – Depth: 30 cm (!)
Weight: 10 – 12 kg

✔

Extremely audiophile signal

amplification.

✔

Load stable – high-current capable

outputs.

✔

Unique, faithful loudspeaker libraries

with all system-relevant features.

Manual

DELTA6.2-DSP

DELTA7.2 DELTA7.2-DSP

DELTA8.4-DSP

DELTA12.2 DELTA12.2-DSP

DELTA12.4 DELTA12.4-DSP

DELTA13.4 DELTA13.4-DSP

DELTA14.4 DELTA14.4-DSP

DELTA20.4 DELTA20.4-DSP

Serial number:

1. Introduction

Dear audio friend and audio technician.

Congratulations on your decision to use Hoellstern amplifiers. First-class tools are a solid foundation for professional
audio productions.

The ASID GmbH located near Freiburg designs, produces and distributes the Hoellstern amplifiers. It is our
philosophy to supply top-quality audio products.

Hoellstern amplifiers present modern, efficient amplifier technology in combination with efficient, strong switching
power supplies. The technical dimensioning and the circuit design are based upon criteria from the aerospace and
automotive industries. Together with an uncompromising circuit layout and high-quality components the result is a
top-grade audio product. Only the quality of our products and the resulting customer satisfaction have the highest
priority for us.

Hoellstern amplifiers meet numerous requirements, from the viewpoint of a sound engineer and also of a buyer:

x Performance, sound, size and weight
x Features, operation and flexibility
x Reliability, stability of value, cost effectiveness

Please take your time to read the manual attentively prior to putting the unit into service. This way you will become
familiar with the technical details and use the amplifiers optimally. For permanent installations we ask you to solicit
further information from us if needed.

Please do observe all safety notes before bringing the unit into operation!

Please take care of your amplifiers, aspirate the air filters regularly and make sure the amplifiers are mounted
correctly. Every additional warming by 10 Kelvin will typically halve the service life of electronic components.

We wish you much success.

ASID GmbH

Page 2 of 20

1.1 General Information

Manual version 2.10 / 04 / 2015 for the Hoellstern amplifier models:

- DELTA 6.2-DSP

- DELTA 7.2 / DELTA 7.2-DSP

- DELTA 12.2 / DELTA 12.2-DSP

- DELTA 8.4-DSP

- DELTA 12.4 / DELTA 12.4-DSP

- DELTA 13.4 / DELTA 13.4-DSP

- DELTA 14.4 / DELTA 14.4-DSP

- DELTA 20.4 / DELTA 20.4-DSP

ASID GmbH © 2004 - 2015. All rights reserved. Hoellstern®, the iCVP® logo and combinations thereof and others
are registered trademarks; other terms, product names and logos are brands held by other companies and owners of
rights.

All information contained herein have been compiled to the best of our knowledge.
Specifications, dimensions and weights do not represent guaranteed features.
ASID GmbH reserves the right to changes which take the current state of the art into account.

Published by:

ASID GmbH
Eichstetter Str. 55
D-79232 March / Germany

Phone [phone]
Fax [phone]
email: [e-mail]

Internet: www.hoellstern.com
Internet: www.hoellstern.eu

Page 3 of 20

Table of contents

1. Introduction................................................................................................................................................................2

1.1 General Information..............................................................................................................................................3

2. Safety Notes...............................................................................................................................................................5

3.Mounting into a 19” Rack or a 19” Cabinet..............................................................................................................7

3.1 Ventilation of the Units..........................................................................................................................................7

3.2 Air Filters...............................................................................................................................................................7

3.3 Ventilation of Racks and Equipment Cabinets .....................................................................................................7

3.4 Important Mounting Instructions and Tips.............................................................................................................7

4.Wiring of the Audio Inputs.........................................................................................................................................7

4.1 Balanced Input Signals.........................................................................................................................................8

4.2 Unbalanced Input Signals.....................................................................................................................................8

5. Output Wiring and Damping Factor.........................................................................................................................8

6. Configuration.............................................................................................................................................................9

6.1 Connecting Channels 1 to 4 (amplifiers produced until 07/2011).......................................................................10

6.2 Connecting Channels 1 to 4 (Amplifiers produced from 07/2011)......................................................................11

6.3 Rear Panel Configuration Switches....................................................................................................................12

6.4 DELTA8.4-DSP amplifier configuration:.............................................................................................................13

6.5 DELTA 12.4(-DSP) configuration........................................................................................................................13

6.6 DELTA 13.4(-DSP) configuration........................................................................................................................14

6.7 DELTA 14.4(-DSP) Configuration.......................................................................................................................14

6.8 Rear side of DELTA6.2-DSP, DELTA 7.2(-DSP) and DELTA 12.2-DSP...........................................................15

6.9 Rear side of DELTA 8.4-DSP.............................................................................................................................15

6.10 Rear side of DELTA 12.4(-DSP).......................................................................................................................15

6.11 Rear side of DELTA 13.4(-DSP).......................................................................................................................15

6.12 Rear side of DELTA 14.4(-DSP).......................................................................................................................15

6.13 Rear side of DELTA 20.4(-DSP).......................................................................................................................16

7. Indicators and Controls..........................................................................................................................................17

7.1 Gain Controls......................................................................................................................................................17

7.2 LED Indicators....................................................................................................................................................17

8. Power Supply...........................................................................................................................................................18

8.1 Mains Supply and Power Supply with iCVP® Technology.................................................................................18

8.2 Operation on Generators....................................................................................................................................18

9. Technical Specifications.........................................................................................................................................19

10. Integrated Digital Loudspeaker Management (-DSP).........................................................................................19

10.1 Hoellstern Loudspeaker Library........................................................................................................................19

10.2 DSP Configuration, Hoellstern Software Konfigurator1 and Hoellstern Konfigurator2.....................................19

11. Terms of Guarantee...............................................................................................................................................20

11.1 Liability Declaration ..........................................................................................................................................20

11.2 Product Warranty..............................................................................................................................................20

12. Disposal.................................................................................................................................................................20

13. Conformity Declaration .......................................................................................................................................20

Page 4 of 20

2. Safety Notes

Before using the product, please read this manual attentively and follow all safety notes. Their purpose is to
keep the user safe and help avoid technical defects and consequential damages caused by incorrect
operation. Make sure teep this manual for future reference.

Caution:

The amplifier is a protection class 1 unit. While in operation, make sure the unit’s protective
conductor (earth) is connected properly. A missing protective conductor may cause
hazardous voltages to occur on the case and controls!

Caution

: Make sure all units of your system are grounded correctly to avoid the risk of an electric

shock!

Caution:

Never connect any output of an amplifier to an output, input or ground contact of any other
amplifier. Otherwise you will expose yourself to the risk of an electric shock or technical
defect.

Caution:

All connected cables must be laid out in such a way that they cannot be bruised by objects
or be stepped upon! Replace damaged cables at once, don't use them!

Caution:

Keep the unit away from dust, moisture, water and other liquids! If despite all care liquid has
got into the unit, immediately pull the mains plug to disconnect the unit safely from mains.
Contact ASID to consult about further measures. Do no longer use the unit under any
circumstances, as fire hazard or injury through an electric shock may result otherwise! For
additional safety the printed circuit boards and components are coated.

Caution:

Never open the housing, there are no serviceable parts inside the unit! Leave such works to
a qualified technician.

Caution:

Use only suitable cables with a copper cross section of at least 4 mm2to connect the
loudspeakers. Due to the high output power, fire hazard or injury through an electric shock
may result with an undersized copper cross section! Molten insulations can produce short
circuits, causing equipment or personal damages. The cables must guarantee a long-term
isolation voltage of at least 250 V AC.

Caution:

Use mains cables with a sufficient copper cross section of at least 1.5 mm2. For cable
lengths greater than 20 m, 2.5 mm

2

are advisable. Cable drums and the like must be

unwound completely, otherwise fire hazard or injury through an electric shock may occur!

Caution:

According to VDE regulations, the Neutrik PowerCON mains connector must not be hot­plugged nor pulled out hot! This is especially true under load. The PowerCON is not a plug­and-socket device designed in accordance with the VDE regulations against burn-up due to
possible spark gaps.
For greater safety and reliability all Hoellstern amplifiers feature an internal mains voltage
monitoring and will cut out almost with no delay in case of a cable interruption. Hence spark
gaps caused by disconnecting the mains supply will be avoided best or put out as quickly
as possible.

C

aution: No sensitive signal and data lines, transmitters and receivers must be laid out or built in

close proximity to the loudspeaker and mains cables. Persons with a cardiac pacemaker
must keep a distance of at least 3 m from loudspeaker and mains cables. Otherwise the high
currents (up to 125 A in speaker cables) and the associated magnetic AC fields may produce
malfunctions.

C

aution: Before connecting the units to mains voltage, make sure that the respective mains outlet

delivers the correct voltage and has a correct protective earthing conductor. This is
especially critical when working at different venues or with power generators. When
exceeding the permissible maximum input voltage, fire hazard or injury through an electric
shock may result!

Page 5 of 20

Note: In the following cases it will be necessary to return the unit to the manufacturer or to a

producer-authorised specialised company for inspection. You will find the contact data on
the manufacturer's homepage www.hoellstern.com.

- The unit was dropped or otherwise mechanically mistreated or damaged.

- The mains cable or mains plug was damaged.

- Objects or liquids have got into the unit.

- The device does not function as usual.

- The unit signals internal faulty conditions on the LED display.

Page 6 of 20