• Network audio feedback protection
• 32 channels
• Each channel frequency shifted down by 5Hz
• Primary and redundant Ethernet on copper and SFP fibre
• Twin power supply 

The Glensound HOWL32 is a high density frequency shifter for preventing audio feedback across Dante and AES67 audio networks. It can be fitted with a maximum of 4 independent frequency shifter cards. Each of these cards provides 32 audio inputs and 32 frequeency shifted audio outputs from the network.

There are no user controls on the HOWL32 as the frequency shift function is preset - what comes in, goes back at less 5Hz.  This function means that if you route a mic audio input via the HOWL32, you will significantly reduce the liklihood of acoustic feedback.

Every frequency input has a 5Hz fixed offset for, example, 1 kHz in → 995 Hz out.  So the signal coming back to the mic is never at exactly the same frequency as what left it.  That means the system can’t 'lock onto' a single resonant frequency and build a continous howl, as the potential feedback frequency keeps reducing.

Being designed for 24/7 broadcast operation, each module on the HOWL32 features redundant network interfaces.  Both primary and secondary network interfaces are available on copper Ethernet and SFP module slots for fibre.  Redundant power is available via dual AC IEC connections.

Dante network audio is a common protocol for distributing high quality linear audio over standard IP networks and it is widely used by many audio equipment manufacturers. The Glensound HOWL32 Frequency Shifter will be compatible with any other manufacturers' Dante audio interface. Further details of Dante network audio can be found at www.audinate.com

Also Available in AES67/Ravenna version

Specifications for both Dante and Ravenna. Scroll down for details

NETWORK:
Physical Interface: 2 x Copper Neutrik Ethercon
2 x SFP (Fibre GBIC) Slots (SFP modules not included)
Audio Sample Frequency: Up to 48k
Transfer Rate: 1000 Mbps

AUDIO:
Audio inputs & outputs are entirely digital fed via the digital network. Internally audio is processed in a DSP with 32 bit resolution. Performance is expected to be completely flat and noise free. We cannot measure it as its performance exceeds the range of our test equipment.

PHYSICAL:
Size: 19” 1RU, 30cm deep
Weight: 2.8Kg (1 mix card fitted)
Shipping Carton: Rugged export quality cardboard
Shipping Size: 62 x 42 x 12 cms
Shipping Weight: 4.5Kg

POWER:
Quantity of Inputs: 2
Physical Connection: IEC socket
Type of Input: Fully redundant
Voltage Range: 100 – 240 VAC +/-10%
Frequency: 50 – 60 Hz
Consumption: 14 Watts (1 x mix card fitted) then add 2 Watts for each extra card

ENVIRONMENTAL
Operating Temperature: 0 to +50°C (32 to 122°F)
Storage Temperature: -20 to +70°C (-4 to 158°F)
Relative Humidity: 0 to 95% non-condensing

INCLUDED ITEMS:
RJ45 Cable: 2 of per mix card fitted
Mains Cable: 2 of (UK & Europe only)

NETWORK OPTIONS:
DANTE/AES67 VERSION
Physical: 2 x Neutrik Ethercons Cat6 RJ45s & 2 x SFP slots
Type: Fully redundant primary & secondary circuits
Sample Frequency: 48K
Resolution: 24 Bit
Control & Routing: Via Free Dante Controller
AES67: Can be configured for AES67

RAVENNA/AES67 VERSION
Physical: 2 x Neutrik Ethercons Cat6 RJ45s & 2 x SFP slots
Type: Fully redundant primary & secondary circuits
AES67: Yes
High Sample Rates: 44.1kHz - 192kHz
PTPv2: Master or Slave, IEEE-1588-2008 standard
SMPTE ST 2110-30: Yes. Including level C and CX
SMPTE ST2022-7: Yes. Seamless data switching
NMOS IS-04 (Disovery): Yes
NMOS IS-05 Routing): Yes
Remote Control: Web browser or Anem

Please use one of the following methods to contact us:

Telephone: 01622 753662
International: +44 1622 753662
Email: sales@glensound.com
Skype: No longer used
Online: contact form