Questions for Designers of Great River EQ-2NV (Great EQ!!!)

[aryschien]

First, to the designers of the Great River EQ-2NV, thanks for the great product. Love it, love it, love it. Want more, want more, want more.

I don't have the GML by my side for direct comparison, but if my memory serves me right, the EQ-2NV really sounds as accurate, and has almost the same fast transient response with a GML. Very little phase shift when eqing. Few EQs that are able to boost a lot above 18khz and bring back the real air of the tracks. Boosting as much low as you want and the shape of the sound never goes out of control. Silky and smooth, etc etc etc.. Great on everything.

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Now the question. In the product description I saw something like it's a "digitally controlled analog eq". Can you tell me more about it? I'm very interested with any info behind this product. Thanks in advance.

[Dan Kennedy]

Hi, thanks for the nice words.

The unit is built on the topology of a 1084, which means an input transformer and gain stage, then four EQ sections in series, then output amplifiers.

Each EQ section has many capacitor and or inductor and resistor possibilities, and each part is switched in or out under digital control. Most of switching is done using high speed analog switches, but there are also some relays.

The front panel has a microprocessor on it that reads the position of the various switches, interprets this info and sends control signals to the audio board to switch in or out the components necessary to set the various frequencies and bandwidths, etc.

[not_so_new]

Originally Posted by Dan Kennedy

Hi, thanks for the nice words.

The unit is built on the topology of a 1084, which means an input transformer and gain stage, then four EQ sections in series, then output amplifiers.

Each EQ section has many capacitor and or inductor and resistor possibilities, and each part is switched in or out under digital control. Most of switching is done using high speed analog switches, but there are also some relays.

The front panel has a microprocessor on it that reads the position of the various switches, interprets this info and sends control signals to the audio board to switch in or out the components necessary to set the various frequencies and bandwidths, etc.

AND IT SOUNDS GREAT! Imagine!

LOL

Thanks Dan, great products (you need to get a 500 series comp out there for us the way!)..

[aryschien]

Thanks for the explanation Dan. No wonder I can turn the frequency knobs easier.

Although the boost/cut knobs are really too small.... But it sounds great. That's what matters.

You mentioned that the four eq sections are in series, and from the look of the eq, the hp filter should be ahead of them all. Therefore, if I set the hp filter at 47hz and then boost at 33hz (bell), am I bringing back some low end that was filtered by the 47hz hp filter setting?

[Dan Kennedy]

Yep, the high pass, when engaged is the first of the filters, so if there's a lot of bottom end, you can carefully cut it, but leave everything else to manipulate as you see fit.

Regarding the knobs, well, there's only so much crap you can fit in a small space, sorry.

[TEMAS]

Originally Posted by Dan Kennedy

The front panel has a microprocessor on it that reads the position of the various switches, interprets this info and sends control signals to the audio board to switch in or out the components necessary to set the various frequencies and bandwidths, etc.

Hi. Interesting topic.

Sorry, if my electronics knowledge sounds a bit basic, but, is this a similar design to the SSL range? And if so, did you (or would you) consider looking into ways to display a read-out (via an onboard LCD, for example, or even externally via USB) of the parameters' values for easy recall? Or am I way off track here?

[aryschien]

I was just kidding about the "knobs are too small" complain. My fingers are thin so I don't have a problem with that.

[Johnkenn]

Originally Posted by not_so_new

AND IT SOUNDS GREAT! Imagine!

LOL

Thanks Dan, great products (you need to get a 500 series comp out there for us the way!)..

This should be moved to the good news channel!

[Baz]

I have to chime in with some love for the EQ-2NV.

We've had it for awhile but I've only recently run it through some heavy service. its hefty price tag has pretty much paid for itself for what its done for our piano alone.Vocals?forget about it its money on vocals,

It was between the 5500 and GR and I'm glad we went with the GR not only for its tone but ability to get a little surgical if need be. No knock on the 5500, its great too but this EQ is fantastic and was a perfect match for our needs.

I'm surprised I don't read more about it actually. I could easily use 3-4 more.

Dan was a great guy to deal with, too.something about these guys in the northen states (
Dan and Dave Hill for eg)
That really know how to provide service as good
As their gear ;-)

[Fletcher]

Originally Posted by Dan Kennedy

Hi, thanks for the nice words.

The unit is built on the topology of a 1084

Dan [you ignorant slut ]... it was based on the topology of the 1083 / 1081... 4 bands, no waiting [the 1084 is a 3 band with a "hi Q" switch on the mid band].

Using the digital control Dan was also able to give 3 bandwidth selections to the two midrange bands [the 1083/1081's only have "hi" and "lo" Q selection] he also made it so the switches won't introduce noise and unwanted distortion to the audio path.

The man is damn near a genius... except when it comes to "N word" model numbers

Peace.

[DanRock101]

i so need one! OR TWO!!!!!!!