EN
Heinz Electrodynamic Designs
problem
Solution
“ON” LED lights
green but no audio
output
Check the wiring and make sure that all cables are working and connected correctly.
Check if you have selected the correct input via the SOURCE switch on the back panel of the
speaker.
Connect an audio source directly to the speaker. If you have audio now, the malfunction is in
your signal path.
If the back panel of the speaker is very hot, it may be that the internal thermal protection of the
amplifiers has shut down the audio output to prevent electrical damage. Turn the unit off, let it
cool down and repower.
Hum, buzz and noise Disconnect all signal cables. If the noise is gone, check your audio cables and the equipment in
your signal path.
Check if you have any electrical devices that potentially produce high amounts of RFI (cellpho-
nes, switching power supplies, radio equipment) sitting next to your speakers.
Try to connect the speakers to a different power socket.
“SYNC” LED lights
up but no audio
Check if you have selected the HEDD BRIDGE input via the SOURCE switch on the back panel
of the speaker.
Check if you have routed the audio source correctly to the HEDD BRIDGE output of your
HEDD Bridge extension card.
Speakers vary in
volume
Use the GAIN control to compensate for any level differences.
Troubleshooting
All our products comply with RoHS and WEEE.
This product has a 2-year-warranty. Contact us or visit our
website for warranty information.
hedd.audio
Drivers
Woofer
1
Basket Ø
6” (152mm)
Voice coil Ø
1.5” (38mm)
Cone material
UHC cone (Ultra Honeycomb Composite)
Tweeter
1
Type
HEDD AMT (HEDD Air Motion Transformer)
Equiv. Diaphragm Ø
2.2” (56mm)
Input connectors
Analog balanced/ unbalanced
XLR / RCA
Digital/HEDD Bridge Options
AES67 Ravenna, Dante, AES3/EBU
General data
Amplification (ICEpower®)
2 x 50W
Sensitivity
440mVrms (-4,9dBu) / 90dB SPL / 1m at 0dB GAIN
Input gain
-30dB … +6dB
Maximum input level (balanced / unbalanced)
6Vrms (+17.8dBu, +17.6dBV) / 4.5Vrms (+15.3dBu,
+13.0dBV)
Input impedance (balanced / unbalanced)
10kΩ / 47kΩ
High Shelf EQ > 2kHz
±4dB (at 20kHz)
Low Shelf EQ < 200Hz
±4dB (at 50Hz)
Frequency response
45Hz - 50kHz
Frequency response ± 1.5dB
52Hz - 20kHz
THD 90dB/1m > 100Hz
≤0.5%
Max SPL sine wave 100Hz - 3kHz /1m
≥103dB
Max SPL peak per pair at 1m
≥111dB
Crossover frequency
2.3kHz
Weight
7kg (15.5lbs.)
Dimensions W x H x D
180mm x 308mm x 228mm
Warranty
2 years
Technical Data
The information and data contained in this manual is sub-
ject to change without prior notice.