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Yeah, I got my question answered in a round about way. The answer is if I use the cab as currently wired, I need to use the 2-4ohm connections on the Herbert, because of the 2-8ohm loads. :thumbsup:

Ok well the speakers are 16ohms each wired in parallel which combined makes them 8ohm with Ohms Law. And I'm only referencing 2 speakers out of the 4 in the cab, obviously the other set will be the same.

When I connect a speaker cable to the input of one side of the split cab and use my ohm meter or read across the positive and negative of the 1/4" jack I get 6.4 ohms, here on planet earth. Lol

I would go with KT77's and re-bias, they sound awesome to me. But that is just my opinion.

If I have a 4x12 cab that is split so it's like having 2 - 2x12. Do I use the 2 - 8ohm outputs or the 2 - 4ohm outputs. My ohm reading of 1 set of speakers reads inbetween 6-7ohms.

Thanks Peter :thumbsup: I'll contact him today so see about shipping.

Yeah, I'm not sure about a repair center here in Florida. I think there was one in the southern part but at this point i would be willing to send it back to Peter in Germany.

Ok so this is the amp history...Herbert was bought from Diezel by my friend Rob in 2007 or 2008, I'm the second owner. The Herbert was originally wired for 100v because Rob was playing gigs in Okinawa, Japan. After he bought his other amp the Herbert was just sitting around and so he sold it to...

Ok thanks for the info, I appreciate it. :)

I know this is an old post but i have a question about hooking up the Torpedo to a Herbert. The Torpedo is only an 8 ohm load...doesn't the Herbert need a 16ohm load at all time or can you hook up only 1 - 8ohm load to the head. The reason why i ask is because of the 2 - 8ohm speaker outputs on...

Thank you

Is Papa back from holiday yet? I'm still having problems.

https://www.youtube.com/watch?v=BsiglC3c6Ps In my opinion it is one of the best sounding amps lately, even compared to the custom shop in the video, I like the OR100 better. :thumbsup:

Bummer :aww:

:doh: ok guys....I have just repeated the same problem only this time the volume drop was not as severe(probably because of the new tubes) , however very significant. PETER...please help, I play my Herbert every now and than and after the tube renewal I thought all was good but now even after...

:thumbsup: Wow…what a difference in performance with new tubes!! :lol: :LOL: And I have noticed a difference between the old EL34's vs the new KT77's. However, I have only played it with guitars that have passive pickups, I really noticed (with EL34's) a fizzly sound in channel 2 and 3 with...

Question guys, are the preamp tube number left to right when facing the front of the amp or right to left?

Wow...pink/red faced Herbert, post a picture if you have one, that would be interesting to see.

I just saw a Herbert listed on Evilbay and it was label as having an "updated tone circuit" the "DeKompression Mod". It also mentions something about the amp's tone circuit was updated to the latest Mark II specs :confused: What the hell is this?? And why would such a mod be needed? :gethim: I...

:rawk: Got my tubes in this afternoon, :worship: Thank you Valve Queen!!! I am really excited to hear this power house with new glass, and the KT-77's instead of the EL34's. I have to wait until the end of the week to bias but oh well. :thumbsdown: