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Technics Production Change Report
New Interconnect Cable Has High Electrical Capacitance
AUGUST 6, 2010
There has been a change in the interconnect cable affecting the
following models: Sl1200MK2. SL1210MK2, Sl1200MK5, SL1210MK5.
This
changeover likely occured in product with 2009 date codes. So that would be
serial numbers beginning (GE9A. 9 is 2009, A is January)
The change involves
the interconnect cable electrical capacitance. The older cables had a total
capacitance of approx 120pF, the new cable is approx 325pF. This change makes
the newer models incompatible with most high output cartridges since the total
load capacitance for uniform frequency response is typically under 300pF total.
Most preamps have 100pF internal, some have more. Adding that to the 325pF of
the cable will produce a peak in the high frequency response, with the most
likely affect being exaggerated surface noise and sibilance.
Resolution: KAB has notified Panasonic QC and send a letter to Pansonic,
Osaka Japan on 8/6/10.
A response from USA has been recevied 10/13/10:
"There was a wiring change in production that did affect the cable
capacitance of this model. As you know there are several factors to determine
the overall capacitance of the system, but suffice it to say, the old cable had
a lower capacitance. Because of the adverse effects, the factory has
discontinued the new cable RJL2P001B12 and have reverted back to the old cable
RJL4P002S12 in production, since September 2009." So it appears this will be
corrected and eventually new production tables will have the original
cable.
All KAB units shipped after 8/4/10 will have the cable replaced with the older 125pF cable.
This does not affect the SL-1210M5G nor does it affect KAB Cardas Rewire mods.
Pictures of the two cable sets are shown below, they are easy to
identify.
KAB Electro Acoustics
P.O.Box 2922
Plainfield, NJ
07062
908-754-1479 PHONE
908-222-3442 FAX