Search found 102 matches

by harris51
Wed Jul 23, 2014 1:31 am
Forum: Marshall Discussion
Topic: nfb resistor question
Replies: 9
Views: 2279

nfb resistor question

I have a jtm45 with radio spares ot running a 8 ohm load I have a 27 k resistor in there now would a 47 k make the amp a little more gainy?
by harris51
Thu Jul 03, 2014 2:46 pm
Forum: Marshall Discussion
Topic: tonal difference between 6k primaries and 8k with kt66?
Replies: 3
Views: 1349

tonal difference between 6k primaries and 8k with kt66?

Just wondering what the tonal difference are I'm using the Marstran rs ot
by harris51
Mon Jun 30, 2014 4:46 am
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

this is my 3rd amp build how else am i gonna learn if i dont ask questions, Im very aware of safety, should i post some pics of the build so far?
by harris51
Sun Jun 29, 2014 11:53 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

I geuss you told me, maybe the questions are much, but not everybody is an amp guru like you mr Manning but thanks anyway :lol:
by harris51
Sun Jun 29, 2014 9:01 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

so if black is ground and green is hot those are for the speaker connections? which are for the impedence switch?according to Marstan chart? am I just hooking to the 8ohm portion of the switch? Thank You Martin your really helping me out!
by harris51
Sun Jun 29, 2014 8:11 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

Thank You Martin! Ill be running kt66 tubes would like breakup but not to early, as far as B voltages im not sure what i want there, another newbie question is the center tap(tan, red) on the chart the only ground on the o t?
by harris51
Sun Jun 29, 2014 7:28 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

so what i hearing from you and seeing on the chart i would wind the 8k wire(brown) and the other 8k wire (brown/w white stripe) and those two would go to v4 and v5?
by harris51
Sun Jun 29, 2014 6:51 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

Im want to run the amp at 8ohms being that i have two 16 ohm speakers.
by harris51
Sun Jun 29, 2014 3:46 am
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Output tranformer question

running the amp at 8 ohms (2-16 ohm speakers) which are my primary output tranformers wires? :oops:
by harris51
Sun Jun 29, 2014 3:32 am
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Re: Just got my new Marstan trannie and gonna need some help

I trying to get activated to the Marstran forum I guess there busy over there. Im sure Ill have alot of questions hooking the output tranny, till then
thanks a bunch!
by harris51
Sun Jun 29, 2014 1:48 am
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

subject

the high voltage (ht) taps are on the same side as the heaters as opposed to the metro trannies is that normal? please excuse the dummy questions and there will be more :)
by harris51
Fri Jun 27, 2014 11:42 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

subject

has anyone used these Radio spares from Marstan and can anyone provide any layouts? Thanks
by harris51
Fri Jun 27, 2014 11:39 pm
Forum: Marshall Discussion
Topic: Just got my new Marstan trannie and gonna need some help
Replies: 28
Views: 5023

Just got my new Marstan trannie and gonna need some help

Can anybody tell me where are the high voltage leads on this transformer it's the 1202-55 and Im sure ill be asking many more question about these transformers Thank in advance for once again saving my butt!