so what makes vertical inputs so great
- Thread starter newking70
- Start date
Reckless Abandon
New member
Re: so what makes vertical inputs so great
Are you talking about old jcm 800's? I have one with vertical imputs. That came up when I was looking for an amp a few years ago. I cannot remmeber what they said. I think it may be that the signal goes through less "stuff" before hitting the preamp. But I am not sure
Are you talking about old jcm 800's? I have one with vertical imputs. That came up when I was looking for an amp a few years ago. I cannot remmeber what they said. I think it may be that the signal goes through less "stuff" before hitting the preamp. But I am not sure
Reckless Abandon
New member
Re: so what makes vertical inputs so great
81-84 are vertical afterwards are horz.I do know that.
81-84 are vertical afterwards are horz.I do know that.
Robert S.
Super Moderator
Re: so what makes vertical inputs so great
Scott wins the prize. The 1984 and earlier JCM 800s had handwired pots and jacks. The horizontal jack amps are PC mounted.
Marshall amps are pretty year dependant tonally because Marshall has a history of using whatever parts were available at the time. Many players have a favorite year for plexis, 800s or whatever. Many folks seem to prefer the tone of the vert input 800s.
Scott wins the prize. The 1984 and earlier JCM 800s had handwired pots and jacks. The horizontal jack amps are PC mounted.
Marshall amps are pretty year dependant tonally because Marshall has a history of using whatever parts were available at the time. Many players have a favorite year for plexis, 800s or whatever. Many folks seem to prefer the tone of the vert input 800s.
STRATDELUXER97
Stratoblaster Tone Meister
Re: so what makes vertical inputs so great
I've played through and have worked on and modded both...They both sound great....Later models had board mounted pots and earlier had hard wired pots off the board as mentioned...
Recently tweaked and went through a 100 watt horizontal combo JCM 800 for a forum member and it totally rocks!
I've played through and have worked on and modded both...They both sound great....Later models had board mounted pots and earlier had hard wired pots off the board as mentioned...
Recently tweaked and went through a 100 watt horizontal combo JCM 800 for a forum member and it totally rocks!
shredaholic
New member
Re: so what makes vertical inputs so great
I can't imagine how PCB mounted pots over wired pots would make any tonal difference - surely it must be something else. It reminds me of the PTP vs PCB debate, whereas people have thought the board makes a difference when its in fact that many companies cut costs when they go to PCB or some other explaination.
Didn't they also reduce the amount of chassis mounted filtering caps when they changed to PCB mounted pots, or something like that?
I can't imagine how PCB mounted pots over wired pots would make any tonal difference - surely it must be something else. It reminds me of the PTP vs PCB debate, whereas people have thought the board makes a difference when its in fact that many companies cut costs when they go to PCB or some other explaination.
Didn't they also reduce the amount of chassis mounted filtering caps when they changed to PCB mounted pots, or something like that?
Gearjoneser
Gear Ho
Re: so what makes vertical inputs so great
I think the main difference (but not positive) is that when they went from vertical to horizontal inputs, they also cheapened the design of the circuit board......meaning that they went from large tracer boards with bigger components, to smaller ones that were butted up against the front of the chassis with lower wattage components on it.
In theory, you'd think that it wouldn't change the sound much, but every little thing you do to a circuit changes things, especially when you turn up the amp and it amplifies those changes. It's the same thing as comparing pickups, even though the only thing that changed was the wind or polepiece material.
I think the main difference (but not positive) is that when they went from vertical to horizontal inputs, they also cheapened the design of the circuit board......meaning that they went from large tracer boards with bigger components, to smaller ones that were butted up against the front of the chassis with lower wattage components on it.
In theory, you'd think that it wouldn't change the sound much, but every little thing you do to a circuit changes things, especially when you turn up the amp and it amplifies those changes. It's the same thing as comparing pickups, even though the only thing that changed was the wind or polepiece material.
