new ceriatone: Overtone His Royal Majesty (HRM) 100/50

[jezzbo]

Hey guys,

Thanks for your help, I will look the files up.
And keep you posted.

[dogears]

Feedback on V1 and the extra gain pot for the low gain (maybe not so low gain anymore) network on the back panel. Of course the snubbers too.... I find all mine sound better sans snubs...

Btw, you guys should look at the gut shots of the OTS HRM. Lots of questionable circuit decisions, IMHO.

Can you be more specific?
I bought a OTS (not HRM though) ampkit that I am putting together right now.
Since this is only my 3th amp that I'm putting together, I sure have a lot more to learn. (did learn a lot already on this forum, THANK YOU GUYS!)

My understanding is the OTS is a decent design, the only issues seen have been lead dress. Make sure you download as many Dumble pics as you can from the files section and follow the real thing's lead dress.

At times it looks wrong, for example he runs the plate and cathode leads parallel on V1 and V2. The looks wrong compared to the lead dress rules and other amps, but on a Dumble this makes a subtle difference in the smoothness of the amp.

What I see on the HRM is that there are both an HRM and snubbers on V2. I've seen at least one Dumble like this, and one of my amps needs small snubbers with the HRM but in general you want one or the other, not both.

I'm not sure what else dogears saw, but that one jumped out at me.

Good luck with the build, when in question, take pics and post questions, lots of help here.

[jezzbo]

Feedback on V1 and the extra gain pot for the low gain (maybe not so low gain anymore) network on the back panel. Of course the snubbers too.... I find all mine sound better sans snubs...

dogears, thanks for your reply.

1. I don't know what you mean with "feedback on V1" (sorry novice)

2. no snubbers for the non HRM too?

[dogears]

I was only referring to the HRM. The pics show the standard Dumble local negative feedback (as used on non HRM only) on the V1 tube. I have years of experience with the HRM and I have never enjoyed the tone with the feedback. I have seen one real Dumble HRM with this feedback but the circuit was totally different and unique. I have not seen it at all with the typical 90s style HRM that we all know and love... The one detailed here on Ampgarage that Nik has clearly based his on.

dogears, thanks for your reply.

1. I don't know what you mean with "feedback on V1" (sorry novice)

2. no snubbers for the non HRM too?

[jezzbo]

ok, thanks for the info, Dogears.

[JImmyD]

[quote="dogears"] I have not seen it at all with the typical 90s style HRM that we all know and love... The one detailed here on Ampgarage that Nik has clearly based his on.
/quote]

I haven't heard ANY Ceriatone HRM clips that have really caught my ear just yet FWTW. I was curious where the design for this HRM model came from. So if I poke around the Dumble files section on this forum I would stumble upon the general schematic I take it?

[Structo]

Well here is the Ceriatone HRM layout, maybe this will help.

http://www.ceriatone.com/images/layoutP ... RM-50W.jpg

[Tubetwang]

bashing is bad form...

Most folks don't like it...

We have some tuff economic times ahead of us...market will clean itself up.

Stop the bashing or...you will be court-marshalled...

Major Twang

[Fischerman]

Bashing is bad form but I didn't see any bashing...just people giving their opinions. And if an opinion isn't positive that doesn't make it bashing.

If a forum (or any medium for that matter) is such that people can only give opinions when they are positive then that forum (or medium) isn't worth much. We've got plenty of guitar magazines that review everything positively...lots of people would prefer to hear honest opinions and if they are not positive then so be it.

IMO of course.

[novosibir]

Bashing is bad form but I didn't see any bashing...just people giving their opinions. And if an opinion isn't positive that doesn't make it bashing.

I also haven't seen in the entire thread, that anybody has been bashed - and opinions are free and shouldn't be constricted, no matter, whether positive or negative!

I think the issue is that people come here, contribute NOTHING, and TAKE info posted here to use for financial gain. It is one thing to get info here to become educated and build yourself an amp, it's another to get info here to build amps comercially, and give NOTHING back to the community.

This here IMO is just an opinion, not more! Although the first part ist the sad truth and I fully agree to the entire post!

https://tubeamparchive.com/search.php?s ... or=ampkits

All 15 of nik's posts

And this here is simply a fact, what probably was posted, to proof 'the truth' above. I think, that this finally had to be said!

Larry