
ejecta
Active member
Here is a pic of the Alchemist bias point. I dont see the adjustment knob though.


Hacksaw":9wdy5uyb said:Looking for bias knobs.. (R9 and R10 One bias and one hum balance ??..) It is the brass screws in the blue cases.. as those are variable resistors, adjuster for bias. btw.. they take a lot of turns compared to a old style variable disk resistor..
ejecta":3ktkcmck said:Hacksaw":3ktkcmck said:Looking for bias knobs.. (R9 and R10 One bias and one hum balance ??..) It is the brass screws in the blue cases.. as those are variable resistors, adjuster for bias. btw.. they take a lot of turns compared to a old style variable disk resistor..
I saw those and thought maybe they might be it but was confused by there being two. Thanks for your input. Im sure you could just call Bogner and ask if its R9 or R10.
I bet the reason for a range of reviews of good and bad are due to a wide range of tube quality and bias variances. Im sure the bias doesnt get checked once here in the states. I mean they are what they are and at that price point and numbers produced there are going to be ones that arent quite right.
Variable":12p3yiyn said:Who says they both aren't bias resistors? I don't know what else you'd use a second variable resistor for in the power section (especially when they're right next to each other). Maybe you could run two different tubes with different biases?...
Variable":1j1gx9d4 said:Who says they both aren't bias resistors? I don't know what else you'd use a second variable resistor for in the power section (especially when they're right next to each other). Maybe you could run two different tubes with different biases?...
Hacksaw":8a3cmn1f said:Variable":8a3cmn1f said:Who says they both aren't bias resistors? I don't know what else you'd use a second variable resistor for in the power section (especially when they're right next to each other). Maybe you could run two different tubes with different biases?...
very true.. and the VR's are the same value.. would make sense they both could be for bias. They do look like its in the same circuit design as well. I do agree.
two tubes with two biases.. now thats old school.. HAHAHA
ejecta":2jp1zozt said:Hacksaw":2jp1zozt said:Variable":2jp1zozt said:Who says they both aren't bias resistors? I don't know what else you'd use a second variable resistor for in the power section (especially when they're right next to each other). Maybe you could run two different tubes with different biases?...
very true.. and the VR's are the same value.. would make sense they both could be for bias. They do look like its in the same circuit design as well. I do agree.
two tubes with two biases.. now thats old school.. HAHAHA
So you only use one to bias only each tube? Is that the way they used to do it?
SgtThump":1eoauj1e said:I just spent a fair amount of time with a Bogner Alchemist head into the matching open-back 2x12" cab and I'm very impressed. Basically, my experience is different than a few posts in this thread. Like total opposite.
I thought it sounded badass. I thought the reverb and delay was excellent and not too "digital" sounding. I thought the FEEL of the amp was amazing! Real fun to play. I thought about buying it, then I realized there's a parallel loop. As far as I know, that won't work right if I want to put an EQ pedal in there for lead volume boosts. So that's a deal breaker right now.
I also had the Tourmaster 4100 rocking hard. Much better sounding than other times I spent with it.
SgtThump":337624lo said:I just spent a fair amount of time with a Bogner Alchemist head into the matching open-back 2x12" cab and I'm very impressed. Basically, my experience is different than a few posts in this thread. Like total opposite.
I thought it sounded badass. I thought the reverb and delay was excellent and not too "digital" sounding. I thought the FEEL of the amp was amazing! Real fun to play. I thought about buying it, then I realized there's a parallel loop. As far as I know, that won't work right if I want to put an EQ pedal in there for lead volume boosts. So that's a deal breaker right now.
I also had the Tourmaster 4100 rocking hard. Much better sounding than other times I spent with it.
ejecta":2qbv0s2m said:SgtThump":2qbv0s2m said:I just spent a fair amount of time with a Bogner Alchemist head into the matching open-back 2x12" cab and I'm very impressed. Basically, my experience is different than a few posts in this thread. Like total opposite.
I thought it sounded badass. I thought the reverb and delay was excellent and not too "digital" sounding. I thought the FEEL of the amp was amazing! Real fun to play. I thought about buying it, then I realized there's a parallel loop. As far as I know, that won't work right if I want to put an EQ pedal in there for lead volume boosts. So that's a deal breaker right now.
I also had the Tourmaster 4100 rocking hard. Much better sounding than other times I spent with it.
Couldnt you just turn the parallel full wet?
Variable":28x1j7n0 said:From what I can tell in the manual, that would mean you would just have 100% effect blended with 100% dry, as the signal is split (hence the term "parallel") and then recombined. But I could be wrong. So you would have the EQed signal blended with the stock amp signal, which would probably sound weird?![]()
My head is still on back order but my 2x12 cab got here today and the cab sounds awesome.SgtThump":13lu3iqe said:I just spent a fair amount of time with a Bogner Alchemist head into the matching open-back 2x12" cab and I'm very impressed. Basically, my experience is different than a few posts in this thread. Like total opposite.
I thought it sounded badass. I thought the reverb and delay was excellent and not too "digital" sounding. I thought the FEEL of the amp was amazing! Real fun to play. I thought about buying it, then I realized there's a parallel loop. As far as I know, that won't work right if I want to put an EQ pedal in there for lead volume boosts. So that's a deal breaker right now.
I also had the Tourmaster 4100 rocking hard. Much better sounding than other times I spent with it.
degenaro":3072bm0i said:My head is still on back order but my 2x12 cab got here today and the cab sounds awesome.
SgtThump":r7qh87x0 said:Variable":r7qh87x0 said:How did the tones compare to the Shiva?
Well, I'm not real good at comparing like that unless I have both side-by-side. I will say that the "quality" of tone to me was equal to the Shiva. I'm kinda wondering if I even liked the Alchemist more? Not sure.
After hearing "bartmccartman's" Quickrod last night, I'm back in the love/hate thing with the Shiva. I liked the Quickrod more. lol...
SgtThump":2iet5m50 said:Variable":2iet5m50 said:How did the tones compare to the Shiva?
Well, I'm not real good at comparing like that unless I have both side-by-side. I will say that the "quality" of tone to me was equal to the Shiva. I'm kinda wondering if I even liked the Alchemist more? Not sure.
After hearing "bartmccartman's" Quickrod last night, I'm back in the love/hate thing with the Shiva. I liked the Quickrod more. lol...
What I've heard o clips I think it'll be a cool head...we'll see. Gotta go check into that Line 6 M13 as well...ejecta":2zqd3wnt said:degenaro":2zqd3wnt said:My head is still on back order but my 2x12 cab got here today and the cab sounds awesome.
I thought the 2x12 did too Ed. It'll be cool to see what you think of the head.![]()
And you know I really like the looks of design he's done on them.
degenaro":2h2u993y said:What I've heard o clips I think it'll be a cool head...we'll see. Gotta go check into that Line 6 M13 as well...ejecta":2h2u993y said:degenaro":2h2u993y said:My head is still on back order but my 2x12 cab got here today and the cab sounds awesome.
I thought the 2x12 did too Ed. It'll be cool to see what you think of the head.![]()
And you know I really like the looks of design he's done on them.
SgtThump":52ks0pfg said:ejecta":52ks0pfg said:Im still thinking I may do the video comparsion of the XTC Classic and the Alchemist this weekend. If I can get a decent tone with the Rodes mic in the room I'll do it.
You should! DO IT, DO IT, DO IT!!!!!!!!!!!!
Hey, want a Shiva and cash for your Ecstasy? Crap, didn't think so.![]()
ejecta":sadrvout said:SgtThump":sadrvout said:Variable":sadrvout said:How did the tones compare to the Shiva?
Well, I'm not real good at comparing like that unless I have both side-by-side. I will say that the "quality" of tone to me was equal to the Shiva. I'm kinda wondering if I even liked the Alchemist more? Not sure.
After hearing "bartmccartman's" Quickrod last night, I'm back in the love/hate thing with the Shiva. I liked the Quickrod more. lol...
Im still thinking I may do the video comparsion of the XTC Classic and the Alchemist this weekend. If I can get a decent tone with the Rodes mic in the room I'll do it.