
Manufacturer of the SH loudspeaker series as well as planner and implementer of PA sound systems and voice alarm systems for commercial and public buildings.

Hamer Soundsystems GmbH & Co. KG
Lohmar (Head office, administration, production facility)New on Amplifa
About Hamer Soundsystems
Hamer Soundsystems (formerly Steffens & Hamer) has been active since 1971 as a manufacturer and specialised wholesaler in the field of professional sound reinforcement technology. Since 1975, the company has produced its own loudspeakers of the SH series, predominantly 'Made in Germany', with an annual production of well over 25,000 units. The portfolio includes ceiling, wall and surface-mounted, pendant and pressure-chamber loudspeakers, sound projectors, amplifiers of the BW series as well as SAA/ENS control units. Central loudspeaker models have been certified by the VdS in accordance with EN 54-24 since April 2011. The sister company AVK GmbH – Technical Devices and Plant Engineering (founded 1999, DIN 14675 certified since 2013) plans, designs, installs and maintains voice alarm systems in accordance with DIN VDE 0833 and emergency warning systems in accordance with DIN VDE 0828. Together, more than 1,690 projects have been implemented, among others for retail chains, hotels, clinics, schools, museums, railway stations and passenger ships. Head office and production facility are located in Lohmar near Siegburg.
- Site
- Lohmar
- Processes
- Loudspeaker production with annual output of well over 25,000 units, 'Made in Germany', Custom painting of loudspeakers (RAL or NCS), Control unit manufacturing (SAA/ENS control units, control unit technology), Planning & implementation of sound reinforcement systems from the control unit to the loudspeaker, After-sales services: repairs, restoration, maintenance services, expansions, Planning & Consulting, Project Design, Implementation (Installation & Commissioning)
- Materials
- Custom Painting
- Certificates
- ISO 9001:2015, DIN 14675 (Voice Alarm Systems), EN 54-24 / VdS certification of central loudspeaker models, EN 54-24 (VdS, central loudspeaker models)
- Founded
- 1971
- Industries
- Retail & Department Stores, Office and Administration Buildings, Hotels & Gastronomy, Educational Institutions, Clinics & Residential Homes, Churches & Mosques
- 01
Planning & Consulting
- 02
Project Design
- 03
In-house Manufacturing of Own Loudspeaker and Control Unit Series
- 04
Custom Painting (RAL/NCS)
- 05
Installation & Commissioning
- 06
Acceptance Testing
- 07
After-Sales: Maintenance, Repair, Expansion
Products and Processes
Custom Painting
Loudspeakers are available in custom paint finishes according to RAL or NCS, depending on quantity even at no extra charge.
Locations

Lohmar
DEHead office, administration and production facility
Products






Inside the production



Industries
Processes & technical limits
| Processes | Tolerance | Max. part | Weight | Lot size | Materials |
|---|---|---|---|---|---|
| Assembly | – | – | – | – | – |
| Loudspeaker production with annual output of well over 25,000 units, 'Made in Germany'Assembly | – | – | – | – | – |
| Custom painting of loudspeakers (RAL or NCS)Surface | – | – | – | – | – |
| Control unit manufacturing (SAA/ENS control units, control unit technology)Assembly | – | – | – | – | – |
| Assembly | – | – | – | – | – |
| Planning & implementation of sound reinforcement systems from the control unit to the loudspeakerEngineering | – | – | – | – | – |
| Assembly | – | – | – | – | – |
| After-sales services: repairs, restoration, maintenance services, expansionsAssembly | – | – | – | – | – |
Additional services
Quality and Certification
Operations are certified according to ISO 9001:2015; AVK GmbH is certified according to DIN 14675 for planning, design, installation, commissioning, acceptance and maintenance of voice alarm systems. Central loudspeaker models are certified in accordance with EN 54-24 by the VdS.
| Evidence | Lohmar |
|---|---|
| ISO 9001:2015 | |
| DIN 14675 (Voice Alarm Systems) | |
| EN 54-24 (VdS, central loudspeaker models) |
History
- 1971
Founded as Steffens & Hamer in Cologne by Joachim Hamer and Hans Steffens as a trading partner of TOA.
- 1975
Start of in-house loudspeaker production (SH series).
- 1998
Management taken over by Dr. Babette Hamer.
- 1999
Founding of AVK GmbH – Technical Devices and Plant Engineering as a sister company.
- 2000
Renaming to Hamer Soundsystems.
- 2011
Central loudspeaker models certified according to EN 54-24 by the VdS (since April 2011).
- 2013
AVK GmbH certified according to DIN 14675 for voice alarm systems.
- 2025
25th anniversary of AVK GmbH.