Kenwood Basic M1 Quick Start Manual Download Page 8

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Kenwood BASIC M1 Current Source Modification

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10/9/2008 6:56 PM

page 8 of 10

This photo shows the bottom side of the amplifier pc board assembly with the original current source
resistor R18 removed:

The first two set of photos are intended to assist in location of the resistors R17 and R18.

Step 3

- Insert the pre-assembled LM334Z devices with the 150 ohm resistors in the original location of

R17 and R18.

This photo shows the top side of the amplifier pc board assembly with the original current source resistor
R18 replaced by the LM334Z:

Summary of Contents for Basic M1

Page 1: ...Kenwood BASIC M1 Audio Power Amplifier Current Source Modification www drmaudioht com ...

Page 4: ...08 6 56 PM page 4 of 10 The V and V leads of the LM334 are formed to have the same spacing as the original 56K resistor The center lead is formed to allow a 150 ohm resistor to connect from the R lead to the V lead This resistor sets the current of the LM334 current source ...

Page 5: ...g table contains a list of parts included in the kit ID Value Part IC17 LM334z LM334z IC18 LM334z LM334z R17 150 ohm watt 5 resistor 3011151 R18 150 ohm watt 5 resistor 3011151 VR3 500 ohm linear trim pot horizontal Hex adjust 3090501 VR4 500 ohm linear trim pot horizontal Hex adjust 3090501 WR1 2mm allen wrench 9001101 ...

Page 7: ... 9 2008 6 56 PM page 7 of 10 This photo shows the top side of the amplifier pc board assembly with the original current source resistor R18 removed This photo shows the bottom side of the amplifier pc board assembly with the original current source resistor R17 removed ...

Page 8: ...nal current source resistor R18 removed The first two set of photos are intended to assist in location of the resistors R17 and R18 Step 3 Insert the pre assembled LM334Z devices with the 150 ohm resistors in the original location of R17 and R18 This photo shows the top side of the amplifier pc board assembly with the original current source resistor R18 replaced by the LM334Z ...