oooooooo

[Structo]

So I need to get the voltage higher, huh?

I can do that.

I remember I had adjusted it lower a while back because I was thinking they were too high and causing some fizz.

I think the highest power tube plate voltage I ever got with this amp was 435v or so.

The PT is rated at 325-0-325 @ 300ma.
In calculating that out, it would seem I should be able to get 458v, right?
1.41 x 325v?

For some reason it looks like I have a 5K1 as my first dropper, then a 22K, 2K2, 150K.

If I install a choke (DC resistance of 100 ohms) would that raise my plate voltage on the 6L6?
I currently have a 330R 10 watter there.

Something else I had done was install UF5408 diodes and .01uf snubbers.
That was a chore shoehorning those in. Bigger leads.
I had to drill the eyelets out to fit them.

[heisthl]

650 X .7 = 455

Dump the 5K1 for something smaller there. The choke will raise everything by 5 to 10 volts except B+1.


Tony - please post the bright cap diagram you use for the both,clean only, OD only choices with one relay.

[greiswig]

Another cool feature is to add an extra relay with a bright cap so it is in circuit on the clean channel and out on the OD..

Tony, I did this in my D'Lite, and I think I was able to use an unused half of a relay. But I now have 3 relays in there (one also controls the PAB volume boost level), so I may be remembering wrong. But the D'Lite (I think) had an unused half of the OD relay.

-g

[talbany]

Give me a bit.. Got to pull the amp out.. can't remember off the top of my head and didn't diagram it..


Tony..

[Structo]

The problem I have with mine is that I use both sides of the PAB relay.
I disconnect the jumper on the bass pot with one side (normally closed) and the other side does the stack lift.

I may change the PAB, not real usable to me.
It jumps like crazy on the clean, but on the OD it just changes the character of the OD.
Then of course it depends how high you have the TMB set at, the higher you have them the less boost you get.
I have the 22M pads on mine.

I also noticed the the Ceriatone OTS does the OD relay a bit different.
They have the relay on when OD is off, then when the OD is switched on the relay is not energised.
Supposed to lower the hum from the relay bleeding into the OD.

[talbany]

Didn't feel like pulling the amp out of the box so here it is from memory or what's left of it from a very long day... Look it over anyone see anything funky speak up..

Switch is SPST Center off brite cap wired in NC...Don't know if I used the 22m but wouldn't hurt to use one..


Tony VVT

[Tag]

hhhhhh

[heisthl]

Didn't feel like pulling the amp out of the box so here it is from memory or what's left of it from a very long day... Look it over anyone see anything funky speak up..

Switch is SPST Center off brite cap wired in NC...Don't know if I used the 22m but wouldn't hurt to use one..


Tony VVT

Actually I was pulling your chain on this one until I went back and read your original post. I was thinking you had said bright on OD or Bright on clean or bright on both and was wondering how you did that on a single relay.

[talbany]

The 330/500 switch is a cool feature and use mine all the time.. Another cool feature is to add an extra relay with a bright cap so it is in circuit on the clean channel and out on the OD.. The switch on the the front can engage it if you want it all the time..It's and easy mod and easily reversible if you ever decide to take it out..I personally don't like the bright cap engaged on the OD!!... A few suggestions..


Tony VVT

Yea! I had Bill do that to the bright switch on my old emmy, as well as making it a 3 way. Off, mild bright and real bright. (My Dumble has a 3 way as well) I did like it on the overdrive at times so he made it available on both channels if I wanted that, or only on the cleans. Deep switch I had him dedicate to clean only.

Cool!! You can use the other side of the relay for other things as well...Lifting NFB in OD or a different value bright cap..,

Actually I was pulling your chain on this one until I went back and read your original post. I was thinking you had said bright on OD or Bright on clean or bright on both and was wondering how you did that on a single relay

That's twice now you pull my chain.. LOL!!!!

Tony

[dogears]

Try a 2.2K dropper and replace the 330ohm with a choke. I bet it really smooths out!

So I need to get the voltage higher, huh?

I can do that.

I remember I had adjusted it lower a while back because I was thinking they were too high and causing some fizz.

I think the highest power tube plate voltage I ever got with this amp was 435v or so.

The PT is rated at 325-0-325 @ 300ma.
In calculating that out, it would seem I should be able to get 458v, right?
1.41 x 325v?

For some reason it looks like I have a 5K1 as my first dropper, then a 22K, 2K2, 150K.

If I install a choke (DC resistance of 100 ohms) would that raise my plate voltage on the 6L6?
I currently have a 330R 10 watter there.

Something else I had done was install UF5408 diodes and .01uf snubbers.
That was a chore shoehorning those in. Bigger leads.
I had to drill the eyelets out to fit them.

[Structo]

Thanks Scott, I'll try that.

Funny thing, I was reading all the OTS pages at Ceriatone yesterday trying to glean anything useful.
Kind of a exercise in futility but I had to laugh when more than one guy said you have to set the OD controls like this for it to sound good. \ /

[JimiB]

Kind of a exercise in futility but I had to laugh when more than one guy said you have to set the OD controls like this for it to sound good. \ /

You mean you didnt know that allready? I thought everybody knew that

[heisthl]

If those dashes represent 10 o'clock(drive) and 1 o'clock(level) that is a good setting to use as a benchmark for the OD to Clean volume bump and is generally a pretty nice tone too.

[Structo]

Well, doesn't it depend on where you have your master set at?
I suppose if you set the OD pots like \ / you could balance the OD and Clean with the master.
But what if the OD trimmer is set differently or the

Most of the time I play my D'Lite at bedroom volume with the pre Volume at noon.
The Master is at 9 O'cCock and the OD volume (or Level on a D'Lite) at around 9:30-9 O'Clock.

If I play at gigging volume I still leave the Volume around noon and the Master will be at noon or close to it.
Then I balance the volume between the clean and OD with the Level pot (OD volume).
With two EVM's that is very loud!

[Tag]

hhhhh