Kaiju 300b

david.tran · 276

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Offline david.tran

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on: February 17, 2024, 08:01:33 AM
Hi, Paul
Can you show me step by step wiring for 8 ohm?
And 4 ohm? I looking on Kaiju manual we’re show adding jumper on OT5 and next step the red and black wire from OT5 where it go?  Please specify thanks.



Offline Paul Birkeland

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Reply #1 on: February 17, 2024, 09:39:56 AM
Could you let us know what speakers you have?

To wire the output transformers for four ohms, you follow the instructions that start on page 67.

To wire the output transformer for eight ohms, you follow the instructions that start on page 68.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Paul Birkeland

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Reply #2 on: February 17, 2024, 02:12:22 PM
Page 69 contains instructions that apply for all of the different impedance configurations.  You also need these wires to be connected for the amplifier to work.

Did your amp pass its voltage checks?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Paul Birkeland

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Reply #3 on: February 17, 2024, 02:41:19 PM
There are wires on each output transformer connected to pins 5 and 10 on the output transformer, and instructions for where to solder those are provided on pages 69/70.

There are wires on each output transformer for the speaker binding posts.  You have to select one!!! impedance configuration to use, follow those instructions on pages 67/68 for the impedance you select, then continue with the instructions on pages 69 and 70. 

If you need further clarifications, consider posting some build photos and focus in on the output transformer wiring.  If you followed the instructions for both the 4 and 8 ohm configurations, then likely no sound will come out of the amp.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline Paul Birkeland

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Reply #4 on: February 17, 2024, 04:11:34 PM
Can you post some build photos?

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man