Velodyne EQ - Page 2  

Is the EQ in the Velodyne unit parametric? I could not tell by reading the datasheet.

but of course. :)

Bruce,

I want one, I want one, I want one, I want one, I want one, I want one,
I want one. (Did I mention I want one?) :D

You'll just have to speed things up, I'll need one by late spring can't wait till summer. Can I send you my money now? ;)

You don't sell direct, so when will I be able to pre-order a unit at my local dealer? (That is assuming it will have stereo/dual sub inputs)

Hi Scott,
The eight equalizers start out at default 1/3 octave centers, but each EQ can be turned into a parametric and set to a speficic frequency. See the attached pic, where the 40 Hz EQ has been moved to 35.

Hope this helps,
Bruce

Bruce,
That is great. Eight parametric equalizers will be more than sufficient for even the most troublesome room. The graph suggests that the analyser has greater resolution than 1/3 octave which is what would be necessary to set the parametric equalizers to specific frequencies. Do you know off hand the resolution of the RTA?

One of the REALLY cool things about the "window" ... when you raise or lower each paramtric frequency, the "bar" moves left or right ... so it is easy to eyeball the frequency center beneath each peak or null ...

This user interface appears to be a SNAP to use.

I am REALLY looking forward to playing with this...

:)

Will it have an adjustable subsonic (highpass) filter?

Hello Bruce

This unit sounds like it will help thousands of users achieve great results from their subs.

Just to clarify things in my mind, the unit will take a mono signal in, and split it out 3 ways?

It will simultaneously control 3 different subs, with eight filters for each sub?

Plus the other smarts for phase & delay etc are independent for each sub?

This is great news from Velodyne.

Talk about putting a new lease of life into older velodynes.

What sort of pricing will it be in Australia??:)

Craig,
Yes I see what you are talking about. I am just wondering what the resolution of the analyser (not the EQ) part of the product is. If it is 1/3 octave and the graph just uses averaging to fill in the inbetween frequencies, then this is not an ideal solution. If the analyser is 1/12 octave or higher resolution, than the graph is quite accurate and being able to set the parametric equalizers to adjust the dips and peaks (as well as their width) will make this a very powerful device.

Scott, I looked at the on line manual, and could not find anything on the resolution of the RTA ... Of course, that does NOT mean it isn't there ... :)

Craig,
I did the same. When I purchased my Goldline RTA, the first thing I did was upgrade it include 1/24 octave resolution for the bass frequencies. This was a costly upgrade but well worth it. A 1/3 octave analyser has inadequate resolution to identify bass nulls and peaks. This is why I was wondering about the resolution of the analyser in the Velodyne system. If the system does have 1/12 or 1/24 octave resolution, and if each parametric equalizer is assignable in terms of its frequency and bandwidth, then I will be purchasing this system.

Scott, even if it does not ... the basic TRUERTA system is going to do the job, for another $200 or so with microphone ... one I get the DD-18 here, I will see what I can find out ...

Hi Scott,
I couldn't quote you the exact resolution, but let me tell you how it works.

There is a digital oscillator running all the time inside the DSP. When you are on the sweep screen the oscillator moves up in frequency, covering the frequencies between 15 and 200 in about 3 seconds. You can hear this as a sweep tone that moves up in frequency. The mic is set to record the intensity of the sweep at any particular point in time and graph it on the screen, which corresponds to the frequency being generated at the time. There is an internal table storing about 500 points between the 15 and 200 frequencies. So, there is actually more than one mic reading for each frequency measured. The DSP is running far faster than one point per frequency.

I'm not sure how this translates to resolution but I think it's safe to say that every frequency is adequately measured and reported on. And, the exact frequency, level, and Q can be set for each EQ.

Hope this helps,
Bruce

Bruce ... From 15 to 240 Hz is four octaves ... This would mean you have more than 125 "points" measured per octave.

That seems pretty detailed ... unless I am missing something... :)

Bruce,
That is extremely detailed and would definitely resolve any dips and peaks. Is the bandwidth of each parametric equalizer assignable (i.e. can you control the width of the correction so that you can dial in an exact correction for a dip or peak)?

Craig,
500 points of measurement is far greater than what my 1/24 octave RTA or the TrueRTA system can achieve.

Very cool!

YES !!!

Yes, it is. There is a Q control that defauilts to 4.3 (1/3 octave), and is adjustable from .3 (very wide), to 19 (pinpoint). Lots of tweakability!

Bruce

Bruce ... Could you give your guys a kick in the BUTT and get my subwoofer moving this direction ? I ordered it Thursday night (from an authorized dealer, of course) ... I figure giving you until Tuesday is reasonable ... :p

Bruce,
It looks like your new outboard subwoofer EQ box has covered all the bases. Let's see now, 500 point RTA from 15-200 Hz, eight parametric equalizers which are adjustable with respect to frequency and bandwidth, capacity for three subwoofers, and multiple programmable settings. You are going to sell a shitload of these including one to me.

I can't do any kicking until Tuesday, but I'll practice up! :D

Bruce

Glad to hear it Scott - now we know how many to make!

Bruce

"Shitload" has replaced "Widgets" at Harvard business school ...

seems more appropriate for it to replace the quantity term "gross". :)

Ran

Careful Ran ... People might find out we are actually having FUN discussing audio ... ;)

I went to Harvard Business School and shitload is an appropriate unit of measure.

MT

Realized I didn't answer this one. There will be a mono (or L+R) signal in, and up to three mono signals out, but the signals out will all be the same - its not like there are three completely separate processing paths for three different subs.

However, each preset can have a completely independant set of EQs, crossovers, phase, etc. so different subs could be controlled with different presets.

Hope this helps,
Bruce

Well done Bruce. Velodyne once again proves that flagship development improves the breed and that customers demands can be fulfilled at the same time. I look forward to giving it a test run.

Ddavidson

Thanks for the reply Bruce...

I figured this was the way it would work from what I have been reading.

I am sure this unit is going to be a big winner for your company, I will be looking to get at least 1 for 3 of my subs, and if it works as planned another for the other 2 subs.

Then the Behringer units I am currently using will be used for other duties.