'78 JMP mark II (1987)... Should I???

[SuperBeaver]

A friend has invited me round to his house tonight to play his 1978 1987 head.

It's totally mint, just serviced and he's looking around £600 for it. ($900)

I may be able to get it for less...

What do you guys think at that price?

Btw he runs a 12AT7 in V1 says it increase headroom.
Anyone else heard of this?

 

[LAARS]

I run different pre amp tubes in different positions to change the tone. IMO -A 12AT7 is a terrible sounding tube in the V1 position but it does increase head room, but so will a 5751 and it sounds better. Myles Rose states this too in his reports at index2. He wrote......

"Many folks think that when they want to have their amp have more clean headroom they can insert a 12AT7 in place of the 12AX7. Very true. (By the way, the 12AT7 in a first gain stage is an awful tone generator in a guitar amp. If you want to drop front end gain use a 5751 (gain of 60-70) or a 12AY7 (gain of 40). The 12AY7 was the first gain stage in the classic Fender Tweed Bassman, Deluxe, etc."


If you want to increase headroom and have good tone, use a 5751 pre amp tube (ala Stevie Ray) not a 12AT7. The 5751 only has 70% of the gain and will have better tone, touch and feel. In my Voodoo V-rock 50 watt, I use a JAN 5751 in V1 and it sounds killer..... Tames down the amp a little yet still has enough gain.

 

[GIBSON67]

Thta's a great price, I think. Especially if it is really mint. Is it stock is another question...

ANd I agree with LAARS, a 5751 is a far better tube for V1 than a 12AT7. But I would take a spare 12AX7 with you to try out since that is what the circuit calls for...

 

[NewReligion]

Take a couple of different 12AX7 pre's with you. Great Price!!

Good luck.

David

 

[SuperBeaver]

The amp is stock and all original apart from an effects loop fitted. Would this affect the value?

 

[GIBSON67]

Of course, everything affects the value to some degree. You'll have to be the judge as to how much. Stock circuits are becoming harder and harder to find...

 

[SuperBeaver]

Of course, everything affects the value to some degree. You'll have to be the judge as to how much. Stock circuits are becoming harder and harder to find...

I think at that money it still sounds good. Before him the guy who bought it bought it new.

Plus 1978 is the year I was born.

That's pretty cool.

 

[GIBSON67]

Sounds like a no brainer, then. Give us pics after your purchase.

 

[SuperBeaver]

Sounds like a no brainer, then. Give us pics after your purchase.

Yea. Put it this way im gonna bring the cash with me

Thats how I always know i'm serious about a piece of gear

If I go in with my bank card it means I have to go to the cash machine and think.
Cash all I have to do is haggle.

 

[LAARS]

sounds like a good deal...... post some pictures when you get it.

 

[SuperBeaver]

Bought...

 

[61rocker]

That's one clean amp at a great price.....Rawk on....

 

[dixie hustler]

Nice score for sure! Enjoy that ballsy beast.

 

[nedcronin]

What great condition! Nice score. I hope you put a 12ax7 in V1. Who needs clean headroom on a plexi????

 

[SuperBeaver]

What great condition! Nice score. I hope you put a 12ax7 in V1. Who needs clean headroom on a plexi????

I did indeed. He had a box of random 12ax7's I think there is a Sovtek in there.

 

[SuperBeaver]

Just rehearsed with it this afternoon.
Had it set at vol 8 on the high input channel 1. Bass 10, Mid 7.5 and Trebble 5. Pres on 4.

Was getting great Winterland Clapton tones with my New SG.

Was thinking the speakers were sounding a little compressed though. I would like some speakers with more openness to them.

 

[X2203xman]

Very nice Mr beaver,You have been scoring lots of nice stuff of late,and I'm just envious!

 

[SuperBeaver]

Very nice Mr beaver,You have been scoring lots of nice stuff of late,and I'm just envious!

We park our cars in the same garage my friend...

I too used to own a 1974x and regret selling it. I also owned a Sovtek Mig and regret selling it also.

We both own 2203's and enjoy forums... Beef Jerky.

 

[GIBSON67]

Nice score! You came out excellent on that beast!

How about some gut shots when you can?

 

[SuperBeaver]

Nice score! You came out excellent on that beast!

How about some gut shots when you can?

Yea, good idea. I'll get the screwdriver charged!