Two OD sections

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Structo
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Re: Two OD sections

Post by Structo »

glasman wrote:You could boost the HRM I guess, would start to sound more like an Non-HRM amp.

Here is another example of a dual OD amp. Has most of the bells and whistles. Both Non-HRM and HRM OD sections.

[img:1024:527]http://www.glaswerks.com/images/front.jpg[/img]

[img:1024:518]http://www.glaswerks.com/images/rear.jpg[/img]
Is that like the one Dogears has?

Man, is that sweet! :D
Tom

Don't let that smoke out!
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glasman
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Re: Two OD sections

Post by glasman »

Structo wrote:
glasman wrote:You could boost the HRM I guess, would start to sound more like an Non-HRM amp.

Here is another example of a dual OD amp. Has most of the bells and whistles. Both Non-HRM and HRM OD sections.

[img:1024:527]http://www.glaswerks.com/images/front.jpg[/img]

[img:1024:518]http://www.glaswerks.com/images/rear.jpg[/img]
Is that like the one Dogears has?

Man, is that sweet! :D
Yes, that is actually his amp, I stole the pics from my website.

It also has the Bluesky switching option installed.
Located in the St Croix River Valley- Afton, MN
About 5 miles south of I-94
aka K0GWA, K0 Glas Werks Amplification

www.glaswerks.com
stiltamp
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Re: Two OD sections

Post by stiltamp »

Where is the bass and treble control of the OD1 channel located in the circuit? Is this a baxandall tone control or a standard tone control?
As far as I can rember I loked to a schematic in this have been only a highcut control as final network.
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glasman
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Re: Two OD sections

Post by glasman »

stiltamp wrote:Where is the bass and treble control of the OD1 channel located in the circuit? Is this a baxandall tone control or a standard tone control?
As far as I can rember I loked to a schematic in this have been only a highcut control as final network.

The OD1 controls are post the overdrive section. But neither conventional or Baxendall design. The Treble is a high cut and the bass control is my own design and as such is not in the public domain.

Gary
Located in the St Croix River Valley- Afton, MN
About 5 miles south of I-94
aka K0GWA, K0 Glas Werks Amplification

www.glaswerks.com
stiltamp
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Re: Two OD sections

Post by stiltamp »

Thanks to all.

Kind regards
Manfred
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heisthl
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Re: Two OD sections

Post by heisthl »

Former owner of Music Mechanix
www.RedPlateAmps.com
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Structo
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Re: Two OD sections

Post by Structo »

Sounds great Henry! :D

Singing leads for sure!
Tom

Don't let that smoke out!
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mat
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Re: Two OD sections

Post by mat »

heisthl wrote:Clip of the dual OD:

http://soundclick.com/share?songid=8287110
Whoa! Great sound ! Think I'm going to stop building amps and start to save for a redplate :?
Last edited by mat on Sat Oct 31, 2009 10:07 am, edited 1 time in total.
mat
bluesfendermanblues
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Re: Two OD sections

Post by bluesfendermanblues »

mat wrote:
heisthl wrote:Clip of the dual OD:

http://soundclick.com/share?songid=8287110
Whoa! Great sound ! Think I'm going to stop building amps and start to save for a redplate :?

mat
+1 Redplate seems like the route to saving one self from a lot of frustration :wink:
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mat
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Re: Two OD sections

Post by mat »

mat wrote:
heisthl wrote:Clip of the dual OD:

http://soundclick.com/share?songid=8287110
Whoa! Great sound ! Think I'm going to stop building amps and start to save for a redplate :?
ooon the other hand (don't have the bucks..yet) :D I think I'll try the 2 OD sections in my (5x noval socket 2x octal socket) amp. My build has travelled from:
97HRM loop-
97HRMloop (built in) 1tube reverb-
'switchable' HRM/nonHRMloop-
BMloop-
nonHRMloop-
and after that lots of experimenting.

The turret board looks really messy now.. :wink:

Henrys amps clip inspired me to concidering the 2 od sections (more messier build :wink: ). The questions:

1. Can I split the power tap going to OD1a and OD1b to the additional HRM OD section or should I have to add an extra filter caps/resistors for the new OD section ?

2. Should I really try this one or not ?
mat
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Structo
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Re: Two OD sections

Post by Structo »

If you look at the Ceriatone HRM they took the plate voltage from V2 and filtered it some more (22uf) for V1's plates.

So I suppose you could do a similar thing to add another stage.

Are you thinking about eliminating the clean channel altogether or simply adding another OD stage?
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Tom

Don't let that smoke out!
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heisthl
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Re: Two OD sections

Post by heisthl »

mat wrote:
1. Can I split the power tap going to OD1a and OD1b to the additional HRM OD section or should I have to add an extra filter caps/resistors for the new OD section ?

2. Should I really try this one or not ?

1. I didn't - I used a 27k off of v2 with a 40uf filter.

2. you should - you will need to invest some trial and error time on the 2nd OD entrance or it sounds like total garbage.
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jelle
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Re: Two OD sections

Post by jelle »

Can be done. :D

HRM and Non HRM in one amp. Dator included. Lots of fun! :twisted:

[IMG:1024:768]http://i608.photobucket.com/albums/tt16 ... hfront.jpg[/img]
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odourboy
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Re: Two OD sections

Post by odourboy »

Great looking head Jelle!
"Let's face it, the non HRMs are easier to play, there, I've said it." - Gil Ayan... AND HE"S IN GOOD COMPANY!

Black chassis' availble: http://cepedals.com/Dumble-Style-Chassis.html
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mat
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Re: Two OD sections

Post by mat »

Structo wrote:If you look at the Ceriatone HRM they took the plate voltage from V2 and filtered it some more (22uf) for V1's plates.

So I suppose you could do a similar thing to add another stage.

Are you thinking about eliminating the clean channel altogether or simply adding another OD stage?
If I got it right the HRM OD section adds to the sound signal path, so I will have clean to nonHRM into HRM.
mat
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