Extra overdrive stage in ODS?

[farley90]

Well I'm beginning my ODS and I'm thinking for the future. I occasionally play some heavier types of music (please dont hate me) and I was wondering if anybody has put an additional preamp in an ODS, which when selected, would replace the existing overdrive stage. I was thinking something like a Bogner overdrive stage, just to get some heavier tones. Of course this would require adjusting the power supply section. Any thoughts, suggestions?

[JimiB]

have you ever played an ODS?
They have quite a bit of gain stock.
Are you doing hrm?
The BM PI adds some gain as well.

[Bob-I]

Yes. I had my Dumble HRM amp at a jam last summer. A metal head friend was playing though it. When he got done tweaking that controls he had a nailed the h-gain tone with his 7 string. I was amazed, sounded great.

[Normster]

http://www.youtube.com/watch?v=O6q9GPlq1Tg

I rest my case.

[Fischerman]

The Bogner XTC circuit(s) are quite different and would require a lot of extra triodes. The Red channel has 4 gain stages plus a cathode follower...not including the FX loop and PI. And all of those stages are very different from most ODS stages...the Bogner cicuit is very 'Marshally'. The Blue channel is very similar to a Marshall 2203/2204 (3 gain stages plus cathode follower).

My advice would be to just let the ODS be an ODS...don't try to make it into something it's not. Use a different amp for the really heavy stuff.

[farley90]

I'm planning to see how it works out. I intend on voicing my ODS towards the Marshall side of things, so maybe it will work out alright. Its just that if I can use the power amp of this one, and put another preamp in to get all the sounds I need. It would require 2.5 additional 12ax7s but if it means not having to make another poweramp... It kindof does seem like fitting a square peg into a round hole.

I guess I'll wait to get my current project done and then see.

[Fischerman]

Maybe if you look at it differently it might make a difference. For example, when you finish building this amp you're probably going to want to build another. So why not just build this amp as an ODS (with a few of your own personal tweaks...I think we all do that) and then later build another amp for the heavier stuff.

I'm going to guess that in the case of the Bogner circuit, you would prefer the tone of a 100W amp (I say this because I much prefer the tone of a 100W Bogner/Soldano over a 50W, even at low volumes). I don't know what your ODS is. A simpler way to do the Bogner circuit would be to make it like a Soldano SLO but with the Bogner Red channel instead of the Soldano Lead channel...so it's just a two channel amp. You can make it Clean/Red or Blue/Red. I made a 100W Clean/Red amp like this and it's my favorite homebrew.

[farley90]

Yea I am definately seeing this as a future addiction. If I were to integrate the bogner circuit, I would definately add the two power tubes to my ODS (which I'm probably going to do anyway). Right now I'm just starting so I will have while to figure it out. Its just if I dont have to build a whole new amp, it would be nice. Having all of the tones I want in one amp would be pretty sweet too.

Do you happen to have a schematic for a Bogner?

[Tdale]

Would a built-in dumbleator work as an extra gain stage...?

tommy

[d95err]

Would a built-in dumbleator work as an extra gain stage...?

tommy

Distorting gain stages need to be very carefully voiced to sound good, especially in high gain designs. The Dumbelator is designed to be transparent, so pushin it into distortion probably won't sound very good.

[briane]

Distorting gain stages need to be very carefully voiced to sound good, especially in high gain designs. The Dumbelator is designed to be transparent, so pushin it into distortion probably won't sound very good.

quoting funk...hmmmmm

Have you tried this? I did and I like it. I dont tend to push it too hard, but if you want an amp with 2 different distortion voicings, its the bees knees. To me this is why the dumbleator is not neccessarily the best loop, as it does provide some distortion (or can). That said I love my dlator, its just different, and not transparent.

[d95err]

Distorting gain stages need to be very carefully voiced to sound good, especially in high gain designs. The Dumbelator is designed to be transparent, so pushin it into distortion probably won't sound very good.

quoting funk...hmmmmm

Have you tried this? I did and I like it. I dont tend to push it too hard, but if you want an amp with 2 different distortion voicings, its the bees knees. To me this is why the dumbleator is not neccessarily the best loop, as it does provide some distortion (or can). That said I love my dlator, its just different, and not transparent.

I haven't tried it, it was just a guess. With the incredible effort people apply in voicing these amps, it would seem strange that using a gain stage not intended for distortion would not be a good idea. But if it works, that's great!

[gearhead]

I have an overdriven dumbel-ator in a dumble-inspired amp. One of ten prototypes from that west coast amp camp that used to make gem named models.

It absolutely slays; has such a rare combination of overdrive roar and sweetness. When I get around to an ODS build, a copy is going in.

[ryanf]

Just so everybody knows, I am the orginal poster of this thread. I ended up signing up twice with the same password and logged in under the wrong name....


Anyway, I think that I am going to try to implement another setting in the ODS. I am going to try the Bogner Ecstasy ciruit found here: http://www.blueguitar.org/new/schem/bogner/xtc_od.gif

I know its not typical for Dumbles, but if everything works out I wont have to sacrifice the Dumble sound.

The one question I have is should the Bogner circuit replace the current overdrive stage, or replace the clean and overdrive stage? In other words, if the Bogner stage were selected, should the signal go straight through the Bogner stage to the power amp, or through the clean, then Bogner, then power amp?

Thanks in advance for your replies! I reall appreciate it.

[odourboy]

Well I know diddly about Bogners but the schematic looks like it would completely replace the clean and OD stages. The input on the left is obviously for guitar and the output on the right looks like it's pretty well ready to feed a master volume circuit.