I just completed my 50 watt D style ODS

[Guitarman18]

megemen wrote:

what should be the value of the trim caps for mid, bass and the treble?

Are you asking what the value of the tone stack caps are on the HRM board or the value of the trimmers?

Look here for all the info you need on a known Bluesmaster style amp:


https://tubeamparchive.com/viewtopic.ph ... 0813feff1c

Don't forget the search function and background reading, so that if someone answers a question you can understand the answer.

Hope that helps,

Paul.

[megemen]

there are basicly 3 trim pots ( which can be dialed with a small screw driver ) and some capacitors attached to them. This is what I am talking about, and my question is about this.
All the best
Mustafa

[ToneMerc]

there are basicly 3 trim pots ( which can be dialed with a small screw driver ) and some capacitors attached to them. This is what I am talking about, and my question is about this.
All the best
Mustafa

I answered that in my first response, start with those settings as a baseline reference.

TM

[megemen]

Dear lall,
What I am trying to ask is that what should be the value written on the caps that will be used for bass, mid and treble? I put a picture.
best
Mustafa

[ToneMerc]

Dear lall,
What I am trying to ask is that what should be the value written on the caps that will be used for bass, mid and treble? I put a picture.
best
Mustafa

.02 or .022, just as pictured.

TM

[martin manning]

...thats 0.02 or 0.022 uF for the mid and bass, and the smaller silver mica treble cap there should be 500 pF.

[Jhyatt2012]

#124 with lower filtering, added a 3 way bright switch

When you say lower filtering, are you talking about using smaller values on the dropping string resistors to increase the gain?

[Structo]

Probably a lower value on the main B+ filter caps.

[ToneMerc]

Probably a lower value on the main B+ filter caps.

Exactly, most likely following HAD's lead of using only 50uF on the 50W versions.

TM