SYSBOXX MKII Plug Connector Modules


SYSBOXX MKII Transformer Modules

SYSBOXX MKII Transformer modules are ideally suited for applications where electrical separation is required. Next to the previous modules, we now offer the SBC13-4XM1:1L, a line-output transformer module with +22 dBU max. level. For our cost conscious users, we offer a 1:1 module, the SBC13-4XF1:1S.


Transformer data:


  SOMMER SPLIT Lundahl LL1570 Lundahl LL5402
Application Microphone transformer Microphone transformer Line transformer
Max. level +12 dBU +16dBU +22 dBU
Distorsion < 1% @ +12 dBU, 40 Hz < 1% @ +16 dBU, 50 Hz 0.1% @ +22 dBU, 50 Hz
Electrical strength 500 V (winding/winding) 4 kV (winding/winding)
2 kV (winding/shielding)
4 kV (winding/winding)
2 kV (winding/shielding)
Frequency response 40 Hz - 15 kHz +/- 0.5 dB 10 Hz - 200 kHz +/- 0.5 dB 20 Hz - 40 kHz +/- 0.3 dB



SBC13-4XF1:1L SBC13-4XM1:1L

ORDER-NO. Description suitable
front panels
(order separately)
SBC13-4XF1:1S Splitter module 1 HU, 3 WU, 4 x XLR-female, B-Series,
1:1 SOMMER CABLE transformer,2 flat plugs, 14-pin
SBFB23-8A/
SYFB23-8A
(2 pcs.)
SBC13-4XF1:1+1S Splitter module 1 HU, 3 WU, 4 x XLR-female, B-Series,
1:1+1 SOMMER CABLE transformer, 3 flat plugs, 14-pin
SYFB23-8A
(2 pcs.)
SBC13-4XF1:1+1L Splitter module 1 HU, 3 WU, 4 x XLR-female, B-Series,
1:1+1 LUNDAHL transformer, 3 flat plugs, 14-pin
SYFB23-8A
(2 pcs.)
SBC13-4XM1:1L Splitter module 1 HU, 3 WU, 4 x XLR-male, B-Series,
1:1 Lundahl transformer, 1 flat plug, 14-pin
SBFB23-8A/
SYFB23-8A
(2 pcs.)