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Gear / Technical Help => Battery Boxes, Preamps, Mixers, ADCs, and Processors => Topic started by: lordbelial on July 27, 2005, 10:58:35 AM

Title: Building your own Preamp?
Post by: lordbelial on July 27, 2005, 10:58:35 AM: Hi there!

Just have one simple question.

I would like to build my own "home made" preamp for my mics and battery box. I really don't know if this is a good idea, so I'm referring to you.

Since in my country, Spain, there is no taper culture just like in the USA, we can't get phantom powered mics (because they're not as stealthier as condenser mics just like the core sounds or the ATXXX from Soundprofessionals), and Pre-amps, A/D's, etc...

My first thought was a pre-amp stage between the output of my battery box (SP-SPBS-1) and the line-in from my NJB3. Just because,

-Battery bax is powering my mics
-So, I could boost the output from my battery box
-So my levels in NJB3 would be higher, keeping my NJB3 at 0 db gain (because I prefer that, NJB3 gain is pure digital and I prefer to boost later, in adobe audition)

But I have no idea on where can I start...

So, any help? Would be very appreciated, and, if the project is succesfull, could be a very good help for tapers like me, who are obligated on keeping his gears and rigs as stealthier as possible.

Thanks!
Title: Re: Building your own Preamp?
Post by: lordbelial on July 28, 2005, 02:51:55 AM: I have found out this,

http://www.tkk.fi/Misc/Electronics/circuits/micamp.html

What do you think about it?
Title: Re: Building your own Preamp?
Post by: poorlyconditioned on July 28, 2005, 09:55:29 AM: Quote from: lordbelial on July 28, 2005, 02:51:55 AM
I have found out this,

http://www.tkk.fi/Misc/Electronics/circuits/micamp.html

What do you think about it?

I think this is what you want:
http://www.geocities.com/ferocious_1999/md/micpreamp2.html

A simple preamp based on a single OPamp chip like NE5532. I've also used OPA2134 in this circuit. It is really easy to build and a lot of fun.

Richard
Title: Re: Building your own Preamp?
Post by: dklein on July 29, 2005, 08:49:44 PM: Quote from: poorlyconditioned on July 28, 2005, 09:55:29 AM

I think this is what you want:
http://www.geocities.com/ferocious_1999/md/micpreamp2.html

A simple preamp based on a single OPamp chip like NE5532. I've also used OPA2134 in this circuit. It is really easy to build and a lot of fun.

Richard

I'll second that recommendation!
Title: Re: Building your own Preamp?
Post by: lordbelial on August 02, 2005, 02:53:58 AM: Thanks.

I guess I'll build up the "pre" during this weekend. I'll let you know how it worked.
Title: Re: Building your own Preamp?
Post by: muj on August 02, 2005, 07:04:39 AM: Quote from: lordbelial on July 27, 2005, 10:58:35 AM
Hi there!

Just have one simple question.

I would like to build my own "home made" preamp for my mics and battery box. I really don't know if this is a good idea, so I'm referring to you.

Since in my country, Spain, there is no taper culture just like in the USA, we can't get phantom powered mics (because they're not as stealthier as condenser mics just like the core sounds or the ATXXX from Soundprofessionals), and Pre-amps, A/D's, etc...

My first thought was a pre-amp stage between the output of my battery box (SP-SPBS-1) and the line-in from my NJB3. Just because,

-Battery bax is powering my mics
-So, I could boost the output from my battery box
-So my levels in NJB3 would be higher, keeping my NJB3 at 0 db gain (because I prefer that, NJB3 gain is pure digital and I prefer to boost later, in adobe audition)

But I have no idea on where can I start...

So, any help? Would be very appreciated, and, if the project is succesfull, could be a very good help for tapers like me, who are obligated on keeping his gears and rigs as stealthier as possible.

Thanks!

there is a spanish engineer who manufactures high-end pro audio.

can't seems to remember his name, but he specializes in retro pultec designs and tube pre's
Title: Re: Building your own Preamp?
Post by: muj on August 05, 2005, 09:20:54 AM: here he is

http://www.mattaudio.com/
Title: Re: Building your own Preamp?
Post by: macacopowa on August 06, 2005, 06:14:40 AM: I think that are you mistaken. lordbelial is from Barcelona, and this company is from Pays Basque... lordbelial how go this preamp DIY
PD: this eq and compressor are a jewel
Title: Re: Building your own Preamp?
Post by: Chanher on August 07, 2005, 04:11:39 AM: off-topic but do any of you know any Spanish translations for some of the audio lingo we use? I've been dying to know some....
Title: Re: Building your own Preamp?
Post by: lordbelial on August 16, 2005, 08:27:43 AM: Quote from: macacopowa on August 06, 2005, 06:14:40 AM
I think that are you mistaken. lordbelial is from Barcelona, and this company is from Pays Basque... lordbelial how go this preamp DIY
PD: this eq and compressor are a jewel

Hi! I'm just starting this week, as I'm on holidays 'til 29th August.

(quiero decir, lo voy a comenzar esta semana, ya que he cogido las vacaciones hasta el 29 de Agosto).

I'll let you all know of the results.

Best Regards
Title: Re: Building your own Preamp?
Post by: Roving Sign on August 16, 2005, 08:49:12 AM: Quote
Since in my country, Spain, there is no taper culture just like in the USA, we can't get phantom powered mics...

Ha - pretty sure we arent THAT powerful... ;)

Good luck with the project...
Title: Re: Building your own Preamp?
Post by: atticus on August 24, 2005, 05:32:06 PM: There are some fairly easy DIY projects out there. Both Forssell Technologies and Audio Upgrades make small preamp cards that can be put together fairly easily. The Forssell is a discrete design, and the Audio Upgrade module is a combination of discrete transistor and high speed monolithic op amps. Good luck and if you have any more questions I'll see what resources I can dig up for you.

www.audioupgrades.com

www.forsselltech.com
Title: Re: Building your own Preamp?
Post by: ac on August 25, 2005, 07:10:16 PM: This is one I have thats home built. May help you out. Made from a Altoid type can.