So it looks like Uli et al has copied the Grampian reverb unit .
https://www.behringer.com/product.html?modelCode=0720-ACW
https://www.behringer.com/product.html?modelCode=0720-ACW
Grampian 636 clone
- Thread starter Tubetec
- Start date
Help Support GroupDIY Audio Forum:
TwentyTrees
Well-known member
I'd be lying if I said I wasn't interested. Don't think I could DIY one for that money.
I see the Soundgas Grampian clone supposedly fetches 5000+ dollars on Reverb , I see Soundgas has now discontinued production before they were blown out of the water by Behringer .
We've certainly had lots of discussion here about the Grampian over the years ,
wouldnt be at all surprised if Uli Beh was sitting on the sidelines, tapping good ideas .
It seems the Behringer clone has only room for a short Accutronics style tank inside , still nice though , I'm very tempted , but I might just wait until we see a teardown here first .
One mod that comes to mind is a regen circuit , using the aux input to feed back a portion of the output signal , should only require a patch cable to do it .
We've certainly had lots of discussion here about the Grampian over the years ,
wouldnt be at all surprised if Uli Beh was sitting on the sidelines, tapping good ideas .
It seems the Behringer clone has only room for a short Accutronics style tank inside , still nice though , I'm very tempted , but I might just wait until we see a teardown here first .
One mod that comes to mind is a regen circuit , using the aux input to feed back a portion of the output signal , should only require a patch cable to do it .
He (Uli) is reading these very lines RIGHT NOW!
While he strokes a fluffy white cat, sitting on a big leather covered chair.
Planning his Total World Emulation & Annihilation of every last DIY'er...
I might just buy one from Thomann.de... only €199
M
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ruffrecords
Well-known member
The original used some seriously long springs which contributed a lot to its sound. Much shorter springs tend to sound very twangy.
Cheers
Ian
Cheers
Ian
amplexus
Well-known member
I mean we didn’t expect Uli not to cut corners did we?
This popped up today (schematic at link):
https://ekadek.com/grampian-636-schematic/
https://ekadek.com/grampian-636-schematic/
mata_haze
Well-known member
this is a very interesting conversation... how do we thing Mr. Uli has got around the scarcity of germanium transistors?
I don't know, but since Music Group is already producing a lot of silicon in their own factories, maybe they just made some?
Is it easy to produce Ge transistors?
Ge is still being sold, since it's used in very different applications, like nuclear reactors and even (alternative?) medicine.
Is it easy to produce Ge transistors?
Ge is still being sold, since it's used in very different applications, like nuclear reactors and even (alternative?) medicine.
L´Andratté
Well-known member
I heard the face plate is the closest resemblance to the real thing. Can someone confirm this is using germanium at all, not some out-of-breath TL072´s pushing some twangy spring?
Understood. I have Germanium parts at home still now (NOS). But selling a brand new product with Ge in it? Wouldn't that fail the EU regulations, which are many and stop them from selling retail? Thomann.de has them in stock right now. Am I tripping here or not?
M
It would
But Music Group probably don't care, or decided to ignore the rules hoping to claim incompetence if anyone comes after them
E.g. the KT-2A, which is an optical compressor, banned in the EU because of the cadmium in surface of the photocell, is also available at Thomann
Not good, and no, you're not trippin'
/Jakob E.
I struggle to find any sympathy for a company like that but with regards to cadmium LDRs in audio products EU law is out of proportion, and particularly it doesn't make any sense at all for T4B modules which are pluggable and could be recycled properly as we do with many other pollutants we use in our daily lives.
I appreciate they and other manufacturers in the audio industry are not giving a crap about it.
I doubt they are setting up production of germanium transistors just for a product like this. If it had germanium transistors they would definitely mention it in their marketing ads.
I appreciate they and other manufacturers in the audio industry are not giving a crap about it.
I doubt they are setting up production of germanium transistors just for a product like this. If it had germanium transistors they would definitely mention it in their marketing ads.
What's the fuss about Ge transistors? The sound of such a unit is 90% the tank, 9% the circuit. Ge vs. Si is measured in ppm's.
The original had a 48V supply, this one only 12V.
So the circuit cannot be the same.
Those looking at it for its desired overdrive/distortion features may be seriously disappointed.
EDIT: misread the schemo, supply is 18V.
So the circuit cannot be the same.
Those looking at it for its desired overdrive/distortion features may be seriously disappointed.
EDIT: misread the schemo, supply is 18V.
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I hadn't even considered that. But, afaict, Ge isn't on the ROHS list. At least not for electronics.
https://www.carlroth.com/medias/SDB-1L54-GB-EN.pdf
I think that's up to the manufacturers. They would need to setup a recycling system. Like we have for batteries and stuff that contains mercury, fi. That means you would be able to use Cd in a system that isn't sold, but leased, or rented. Then it's up to the manufacturer to recycle the component that contains Cd.
Of course, that excludes small manufacturers. Too expensive. For batteries there's a non profit (started by the battery manufacturers) that recycles them, financed by an "ecology" tax on the products. The same goes for electronics; only those are recycled by parastatal entities created by the govt. Both work extremely well.
