rotation

G9 qualitys
« on: August 18, 2006, 01:19:48 PM »
Hi!
Someone from our Planetaudio.si is (seriously) thinking of building an G9 preamplifier with my help. I proposed it because of simplicity, easy to find parts and very good experiences with all Gyraf's gear.
I laready told him some things about qualitys of this design, but he also needs some comments from people that experienced it's sound. Can anyone please comment this preamplifr and compare it to other known and commercial designs?
Thanks in advance!
Miha


jensenmann

G9 qualitys
« Reply #1 on: August 18, 2006, 03:23:14 PM »
It´s in the same league than other professional (not mass product-prosumerbullsh*t) preamps. I am very happy with with mine though I have a bunch of Preamps. Highly recommended
 :guinness:
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

Mbira

G9 qualitys
« Reply #2 on: August 18, 2006, 04:53:38 PM »
It's my favorite...
Joel Laviolette

Rattletree   |  https://www.rattletree.com
The Rattletree School of Marimba | https://www.learnmarimba.com

peterc

G9 qualitys
« Reply #3 on: August 19, 2006, 02:12:53 AM »
It is a very nice mic pre. Wonderful sweet mid range & clear top end. & the DI is very good too.

Peter
If opportunity doesn't knock, build a door.

mikeyB

G9 qualitys
« Reply #4 on: August 19, 2006, 05:45:32 AM »
Great sounding box - you think some named voicechannel type boxes sound good until you compare to G9 - just to realise what a sh*t piece of gear you've been using, "pre-G". I got mine with OEP's  - sounds wicked on drum overheads, DI bass, vocals and my colleague has been "mastering" through it to "warm things" up a little. Put mine in a very portable box(check my posts)
making better music!

mikeyB

G9 qualitys
« Reply #5 on: August 19, 2006, 05:50:10 AM »
Sorry - forgot to say - search "hotlunchbox" for pics of my G9 build
making better music!

FotisGR

G9 qualitys
« Reply #6 on: August 19, 2006, 06:19:34 AM »
Try it. It sounds beautifull. I can't compare it with others but i can say you that it sounds, rock. A little aggresive sound. Not very fat, too.
My opinion is that has a rock style sound. Not very clear, not very fat not extra linearity but a nice rocker.
I suggest to use it with oep and not extra high fidelity components. Its sound personality is rock n roll so if you build it with lundahls and pio caps for example  :shock: you will kill its sound character. Try it with oep and wima caps and you will be ok. If you like a more lundahl (neutral) sound you must build something else like "slowblow" or 12sn7 version of slowblow.
Is what you need. I would w**k to sign rock with g9 but i never would record my grand piano with it.... :?
cheers
fotis

maxime

G9 qualitys
« Reply #7 on: August 19, 2006, 07:54:10 AM »
i have two unit -lundhals versions, and love it completely. the dual output-gain combination is very usefull as you can dial sounds from clean to fat depending on the situation, making it very versatile. I got much success with it on voices, from rock to classical acts. to me it allways sound really sweet and very musical.
I use mine all the time!
happy building
maxime

Rob Flinn

G9 qualitys
« Reply #8 on: August 19, 2006, 08:14:35 AM »
I'm with Maxime, the 2 level controls allow many different shades,  I often use mine for DI applications.  Or in conjunction with a DI box for Fender Rhodes, or fattening up a synthesised Hammond sound.
regards Rob

jensenmann

G9 qualitys
« Reply #9 on: August 19, 2006, 08:47:33 AM »
:thumb:
I forgot to mention the Instrument input. This rocks indeed. Very rich sound.
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort


Purusha

G9 qualitys
« Reply #10 on: August 19, 2006, 09:05:49 AM »
Since this pre is so popular I wonder if anyone here did some A/B tests VS some high-end BIG NAME PRE? It would be nice to hear it next to a VOX BOX or something.
Regards as always, Purusha

jensenmann

G9 qualitys
« Reply #11 on: August 19, 2006, 09:50:58 AM »
Well I would prefer the G9 in most cases to my V72. It´s more exact, has more definition and less hiss :wink:, the G9 sounds definitly more modern vs V72 more oldschool.
Vocals are more upfront, focused and neutral with a Siemens V276 and a Neumann V476 while the G9 gives a more round and colored vocalsound in a positive HiFi-like sense (think Enhancer).
Compared to a Drawmer 1960 It has a way richer instrument input sound and and is more on the tube-colored side but as above stated think of the signal being enhanced in a very nice and colorful way.
Compared to a JoeMeek VC1QCS it´s cleaner, warmer, has more low and high end. The Meek is better for making a signal agressive.

To be honest it´s very hard to find the right words for all this and it´s definitely not objective. In the first place I was really surprised about Fotis´ answer saying that it colors the sound. But the more I think about it I have to confess that he is right. But this way of coloreing is like I said more on the enhancement side, adding some nicerizing artefacts to the sound. Like those superhighend HiFi system which are far away from what I´d describe as neutral but which make the audio bigger than life in a positive sense.
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

EEMO1

a/b
« Reply #12 on: August 20, 2006, 05:19:23 AM »
i let an engineer friend test my one channel oep g9, he has a vt-2.

 the difference was stunningly small, most certainly not 2000 euros like he said... the vt-2 had a bit more low end, or the g9 was a bit brighter in the midrange (whatever you prefer). jaakko told me it could just be the transformers, i used oep in mine. maybe the jlm output transformer brings the unit up a bit more in comparison, like one forum member reported... im def. building one with jlm/other to test it out in the near future.

jensenmann

G9 qualitys
« Reply #13 on: August 20, 2006, 03:47:09 PM »
check this link for tube comparisons in the G9:
http://www.groupdiy.com/index.php?topic=17608
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

Svart

G9 qualitys
« Reply #14 on: August 20, 2006, 04:00:45 PM »
how do you guys set yours up for clean and fat?
Welcome to the GroupDIY leper colony! when something falls off, we just replace it with a tube!
occupation: General Electron Mayhem

Alesis X2 information repository:
http://www.theopiumdenproductions.

Svart

G9 qualitys
« Reply #15 on: August 22, 2006, 12:28:06 PM »
?  :guinness:
Welcome to the GroupDIY leper colony! when something falls off, we just replace it with a tube!
occupation: General Electron Mayhem

Alesis X2 information repository:
http://www.theopiumdenproductions.

rotation

G9 qualitys
« Reply #16 on: August 22, 2006, 12:30:54 PM »
Thanks for your help guys! It's helpfull to have owner's opinions. I hope that guy will build this preamp because i'm very interested to hear what it does.
Miha

jensenmann

G9 qualitys
« Reply #17 on: August 22, 2006, 05:22:00 PM »
@svart:
clean is for me output open and setting the level with the gainswitch
fat and colored is cranking the gain and padding it down with the output pot
 :guinness:  :guinness:

Yesterday I recorded some bassguitar with my G9 and it sounds wonderful! Jakob did a great job. :thumb:
Jens
Quote from: PRR
The tubes of course don't care what frequency they distort

hejsan

G9 qualitys
« Reply #18 on: February 04, 2007, 08:26:17 PM »
hey, jensenman, what transformers do you have in yours?

thanks,
hejsan
Just remember -- if the world didn't suck, we would all fall off.
Quote from: "Butterylicious"

nerd

G9
« Reply #19 on: February 04, 2007, 10:30:42 PM »
I am about to start building one of these with the OEPs (enclosure just arrived this week). I am just curious about the comment FotisGR made saying "Not very fat". What would you guys consider Fat and Funky? I am building the G9 regardless, but maybe for my next project...