parametric EQ

Hi there,

I am looking for a parametic EQ.
I'd like to set Q-level (bandwith) on my own.

The EQ should have some "grip" (I don't know what's the correct translation, but you should feel, what it is doing!).

On this board, I found these ones:
CAPS EQ (http://users.pandora.be/Rogy/IEMFinalizer/CAPS EQ)
Net EQ (http://www.wavefront.mcmail.com/neteq.pdf)

I don't know anything about them ... can anybody help me?

I've already found these things:
1. Symetrix 551E Five Band Parametric EQ
http://www.symetrixaudio.com/tech_support/schematics/55xE-1A00.pdf

Low Cut: 6 - 260 Hz
High Cut: 3000 - 65000 Hz

Frequency: 100 - 2000 Hz (x0.1, x10, x1)
Bandwith: 0.05 - 2.0 Octaves
Level: -20 - +12 dB

Click to expand...

2. RANE PE17
http://www.rane.com/pdf/pe17sch.pdf

Low Cut: 10 - 250 Hz
High Cut: 3000 - 40000 Hz

Frequency: 100 - 2000 Hz (x0.1, x10, x1)
Bandwith: 0.03 - 2.0 Octaves
Level: -15 - +12 dB

Click to expand...

Funny, seems like Symetrix & Rane did some teamwork :grin:

3. Behringer ULTRA-Q PRO PEQ2200
... no schematics here ...

Low Cut: 10 - 400 Hz
High Cut: 2500 - 30000 Hz

Frequncy: 20 - 400 Hz
Bandwith: 0.03 - 2 Octaves
Level: -15 - +15 dB

Frequency: 60 - 1000 Hz
Bandwith: 0.03 - 2 Octaves
Level: -15 - +15 dB

Frequency: 150 - 2500 Hz
Bandwith: 0.03 - 2 Octaves
Level: -15 - +15 dB

Frequency: 500 - 8000 Hz
Bandwith: 0.03 - 2 Octaves
Level: -15 - +15 dB

Frequency: 1000 - 20000 Hz
Bandwith: 0.03 - 2 Octaves
Level: -15 - +15 dB

Click to expand...

Okay, the Behringer seems interesting ... 54 EUR only.
BUT: Pro-Series, SMD and 4560/4580 OPAs :-(

What do you suggest?

Best,
Tobias

you want to "build" or "buy" an eq?

steff

Steffen,
[quote author="Steffen"]you want to "build" or "buy" an eq?[/quote]

If there are schematics or projects of a good machine, I would like to BUILD it.
But if there are no good things available, I'll have to buy it :-(

gn8
Tobias

btw: Are you Steffen from Viersen, NRW, Germany?
If yes: I'll be in Essen tomorrow for All-You-Can-Eat @ PizzaHut(tm).

Tobias, this is sontec EQ:

http://www.thediypill.phx.com.br/diy_sontec.htm

:thumb:

Fabio

[quote author="TobWen"]Hi there,
The EQ should have some "grip" [/quote]

I read this information in an interesting pdf@fabios site:
"The first impression upon comparing a 250EX to other equalizer is that the Sontec isn't doing anything. More listening gives the impressions that the EQ is taking place...."
The Sontec sounds very good for me, but i can't say it has "grip". The calrec eq has much "grip".
You won't get cheaper with a sontec than a behringer and I would not recommend the sontec for your live music purposes to adjust your speaker system. :wink: (try the ultradrive DCX2496 stuff)
Just my opinions.

just curious, what's the price of DIY sontecs in components?
or Calreq's in case someone has made the calculations already?

Cheers,

Tony

[quote author="TobWen"]Steffen,
[quote author="Steffen"]you want to "build" or "buy" an eq?[/quote]

If there are schematics or projects of a good machine, I would like to BUILD it.
But if there are no good things available, I'll have to buy it :-(

gn8
Tobias

[/quote]

for the calrec look here:

http://www.gyraf.dk/gy_pd/calreq/calrec.htm


>btw: Are you Steffen from Viersen, NRW, Germany?
yepp, thats me

steff

[quote author="tony dB"]just curious, what's the price of DIY sontecs in components?


Cheers,

Tony[/quote]

my version is around 530,- euro

you're to rich for my league Jaakko :sad:

if it may be of any comfort, you're not the only one :grin:

I broke down and bought one for around $1200 on ebay. I have the 250ex, so if anyone needs specific info for this unit, I can probably check out the insides for you.

:shock:
some inside pics would be nice Brad!


:guinness:
Fabio

let me 2nd Fabio here

Pics man, piiiics

There is a very nice design from Mr Barry Porter on the net , the file name is neteg-1072.zip

There is everything in , pcb , schemo and comment of how many dB's up/down you want to go.
Also the input and output are very nice in design , so have a look on this file.

Mr. Porter died some time ago, and his website is no longer up. But I have the file. Anyone who wants to host it on his own webspace, let me know.

maybe I could
would have been nice to be able to ask permission though ... :roll:
still I'll hide it in my site if it's not too big and only link to here

wadda ya think Dave ?

I just emailed the files to you, Kev.

everyone say thank you to Dave
and
Mr. Porter.

http://www.diyfactory.com/data/misc/readme.pdf
http://www.diyfactory.com/data/misc/NetEQ.pdf
http://www.diyfactory.com/data/misc/PCBtracking.pdf

there is another zip file ... perhaps later

Thanks, Dave.!

And Mr. Porter.. And to our glorious leader..!

:thumb:

Jakob E.

Cheers Dave and Mr.Porter!!

Nice one.

Tom