Larry/Star ground link ?

Get support and show off your MetroAmp 50 Watt kit builds.

Moderator: VelvetGeorge

Post Reply
User avatar
Tone Slinger
Senior Member
Posts: 6520
Joined: Thu Aug 24, 2006 10:31 am

Larry/Star ground link ?

Post by Tone Slinger » Tue Mar 18, 2014 10:18 pm

Hi everyone, I was wondering if anyone has a link to the Larry ground layout for a 50 watt plexi build ?
Rip Ben Wise (StuntDouble) & Mark Abrahamian (Rockstah)

User avatar
Did J
Senior Member
Posts: 165
Joined: Tue Nov 09, 2010 4:23 pm
Just the numbers in order: 13492
Location: Remember Paris

Re: Larry/Star ground link ?

Post by Did J » Fri May 16, 2014 5:55 pm

This is for a JTM45 but works for what you're asking for. I follow the same node for my 1987:
http://forum.metroamp.com/viewtopic.php ... 41#p269137

catalin gramada
Senior Member
Posts: 182
Joined: Sun Feb 08, 2009 1:54 pm
Just the numbers in order: 7
Location: everywhere in Europe

Re: Larry/Star ground link ?

Post by catalin gramada » Mon May 19, 2014 9:11 pm

Hi.
It's not quite a "Larry" and not even a "star" but the same basic rule. My bus grounding for a 50w plexi style circuit. Despite some opinions those caps are easy replaceble if need it.Hope this help.

Image

Image

1-v1 cathodes resistors
2-v2 cathodes resistors / volume pots
3-presence pot / mid pot / output jacks ground

run the bus to a point bolted to chassis (near power section filter caps). tie at this lug: the bus /main filter cap /screen filter cap and power catodes
more few important directions: tie rectifier "-"pole or common PT right to main filter cap lug; tie common OT secondary right to output speaker jacks. it really not matter where you tie bias circuit and heater references but best to avoid places where currents traffic are, to not rise potential noise into signal chain. use nearly available points to chassis for instance.

ps; please not laugh.those power wirewound resistor are there just for tone consideration.

Cheers
Catalin

Post Reply