HEDD BASS 08 User Manual (English)

Questions and Answers:

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gmiddletonAug 6, 2025
What to do if HEDD BASS 08 Subwoofer has green power LED on but no audio output?
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  perrylauraAug 6, 2025
  If the green power LED is on but there's no audio output from your HEDD Subwoofer, here are a few things to check: * First, ensure all cables are correctly connected. * Next, verify that you've selected the correct input using the ANALOG/AES switch on the back panel. * You can also swap the cables of both loud- speakers to check for a defective signal cable. * Try connecting an audio source directly to the speaker, paying attention to the volume. If you get audio output, the problem lies in your signal path. * Also, if the back panel of the speaker is very hot, the internal thermal protection might have shut down the audio output. In this case, turn the unit off, let it cool down, and then power it back on.
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Gary NobleAug 15, 2025
Why is my HEDD BASS 08 Subwoofer making a hum or buzz noise?
- S
  Stephanie SullivanAug 15, 2025
  A hum or buzz noise in your HEDD Subwoofer's output can be caused by several factors: * Faulty audio cables or equipment in your signal path. Try disconnecting all signal cables. If the noise disappears, inspect your audio cables and equipment. * If you're using the balanced XLR input, try activating Ground Lift on your signal source. * Interference from other electrical devices. Check for cellphones, switching power supplies, or radio equipment near your speakers and move them further away. * Sometimes, simply connecting the speakers to a different power socket can resolve the issue.
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Barbara HinesAug 25, 2025
How to fix a constantly lit red overload LED on HEDD BASS 08 Subwoofer?
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  cunninghammadisonAug 26, 2025
  If the red overload LED on your HEDD Subwoofer is constantly lit, reduce the input audio level either on the source or with the Inp. Sens. control and increase the Vol. instead.

HEDD BASS 08 Specifications

General

HEDD Subwoofers	BASS 08 BASS 12
Woofer (honeycomb diagram)	8’’ (2’’ voice coil) 12’’ (2.5’’ voice coil)
Frequency response (-3 dB)	24 - 80 Hz 20 - 80 Hz
Upper frequency limit (var.)	40 - 120 Hz 40 - 120 Hz
LF range (-3 dB): normal / extended	24 / 20 Hz 20 / 16 Hz
LFE function (LowPass filter +10 dB gain)	LP 200 Hz / +10 dB LP 200 Hz / +10 dB
Sensitivity (Inp. Sens.: 0 dB, Vol.: +12 dB)	90 dBSPL 1W/m 96 dBSPL 1W/m
Input gain	± 12dB ± 12dB
Input sensitivity	-10 / 4 / 0 / +4 dB -10 / 4 / 0 / +4 dB
HEDD Lineariser®, disengageable, delay	30 ms 30 ms
Phase switch	0 / 90 / 180 / 270° 0 / 90 / 180 / 270°
Maximum SPL at 1 m (half space)	105 dB 115 dB
AD/DA Conversion	96 kHz / 32 Bit 96 kHz / 32 Bit
Input 1: analog stereo (2ch) / impedance	2x XLR / 22 kΩ 2x XLR / 22 kΩ
Input 2: AES “in”	1x XLR 1x XLR
Output: AES “through”	1x XLR 1x XLR
Output to satellites (2ch) highpass @	80 Hz L/R 4th order 80 Hz L/R 4th order
Satellite offset @ANALOG OUT	± 2m in .5m steps ± 2m in .5m steps
Power amplifier / universal mains 110 - 240 V	300 W ICEpower 700W ICEpower
Cabinet with satin lacquer finish	black black
Warranty	2 years 2 years