NAD - Marshall Lead 12

fitz

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My bargain Lead 12 was delivered today.
Popped up on Reverb a few days back and I threw a lowball offer at it expecting a counter, but the seller just accepted.

Here's a pic next to the Park bass cab I converted to a 1x12 I'm planning to use as an extension cab.
Same width and depth, but a bit taller than the Park.
A 12" speaker upgrade to the combo is the first thing on my to-do list.

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And a pic stacked by the 3210 for a size comparison.

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Described as having scratchy pots and a stiff middle tone pot.
Before I put any power to it, I pulled the chassis and gave it a visual once over, along with a dose of Deoxit in all the pots and jacks.
Everything looked ok, and the stiff pot loosened up nicely.

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April 19, 1989 date.

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I disconnected a shoddy switching jack mod in the back panel and repaired the speaker leads.
As expected, the stock G10D-25 is..., um..., underwhelming.

On a good note, nothing looks amiss, and the amp works fine.
Pots are not one bit scratchy as described, and the thing is almost dead quiet with the volume and gain cranked.
Noise floor is fantastic compared to my old Lead20, and the bacon frying noises the Lead 30 used to make.
I guess the Deoxit did the trick and I have no plans to pull the board and mess with solder joints unless a problem emerges.

Rigged up an extension speaker cable and ran the little fella through the VM cab of G12C's.
Also popped a Haze G12T-66 in the Park 112.
Both were a major improvement.

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Got some old grill for the Park cab, and a few other cosmetic ideas bouncing around the noggin.
 
Integral power cord was missing the ground pin, so I chopped it, put on some spade connectors, and ran it to a cord jack in the back panel.

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Spliced the speaker lead back together after removing the shoddy switching jack.
Going to put in a new jack that will be parallel off the other speaker spades.

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Laid out the 12" speaker mods to the baffle.
Leaving the logo pin holes at the top.

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Drilled a couple holes at the ends of the straight cut, and the jig saw opened it up a bit.

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Just need to relocate the T-nuts and put some black stuff on the new cuts.

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T-nuts in and the grill back on.
Put it all back together with a Haze G12T-66.

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Rigged up a temp jack for the extension cab.
I have some new jacks and plates inbound.

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Did I mention I hate white piping?
Had some scraps of gold piping in the stash - there's a splice mid-way across the bottom.
Also dug up a newer style Marshall handle with both of the end caps.
Put the 9" logo on the VM cab since I stole that one for the head shell.
I think block logo looks nice with the gold piping...

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And with the Park cab to match (with the other T-66) in some better lighting than down in the tinkering cave.
Not visible, but I also had an unbranded handle for the extension cab that looks just like the Marshall handle on the combo.

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Killer little amp.
Sounds massive with a pair of 12's.

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Now I have to figure out where to put it...
 
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