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Improving your BAT 150SE

Most of you are aware of David's (davidgarretson) mod which includes coupling caps, input wires, and rectifiers. I just had mine modded, only the first two items. what I wanted to share with you is the input wires.

150SE is bridged internally from a 75SE, both input and output. both input are wired from XLR jacks to the main PCB, but you only use one input as the signal is shared using a cheap jumper near the very front of the amp. when you replace the input wires, skip the jumpers and run your input wires from XLR jacks to one of the main PCB and continue to the next PCB. I kept the ground wires in both, but removed the input wires of unused side to reduce RF pickup.

with caps and wire change, you will hear improve definition, speed, ambient retrieval, and probably details. well worth the effort and money.

thanks to davidgarretson for sharing his experience with happy BAT owners.
semi
semi OP
649 posts
 
any mods listed above can be done on 75SE, you don't need to run the input wires from one input jack to both PCB unless you want to run mono :)

the result, after 5 hours of listening, was astonishing and I assume it will only get better as the caps and cables break in.
dgarretson
2,586 posts
 
Hi Semi, thanks for the acknowledgment & glad you are happy with those mods.
dob
577 posts
 
"...Joule Electra LA300ME pre-amp for example"

This preamp has both Oil (OIMP) and Teflon (TFTT) V-caps but it has many more capacitors which I feel are better then V-cap - both in signal path and (other caps) in power supply.

I believe you should ask Victor's opinion - he is wonderful person, fantastci engineer and as I heard has an Steinway at home and thus listen directly "from the horse mouth"

All The Best
Rafael
rgurney
279 posts
 
Rafael - What are these other caps in the LA300ME of which you speak? Thanks.
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