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  #1  
Old 11-29-2011, 08:50 AM
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New DIY Bass Pre (from Runoffgroove.com)

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For you DIY folks:

The fellows over at Runoffgroove have developed a new DIY bass pre.

Ginger

This is the successor to the Flipster which is an awesome sounding pedal.

This looks like a super fun project and the sound samples are sexy as hell.

Happy building y'all!
  #2  
Old 11-29-2011, 10:28 AM
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Nice. Anyone want to do a run of pcbs so that we can get this going?
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  #3  
Old 11-29-2011, 02:49 PM
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Definitely one of my next projects. I built a Flipster a while back and loved it.

If anyone is doing a run of pcbs, I'd be interested in one.
  #4  
Old 11-29-2011, 04:39 PM
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I just want to let everyone know that the 2N5457 and all of its sister parts are being discontinued by the manufacturer. Most likely any manufacturer that is using these parts will be changing their designs to accommodate something that will be easier to acquire (I did)… so, there will be old stock available for a while, but expect the price to increase.

Hopefully someone will chime in with an equivalent substitute.

-Frank
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  #5  
Old 11-29-2011, 06:15 PM
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I've seen the MPF102 recommended.
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  #6  
Old 11-29-2011, 07:13 PM
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Originally Posted by Steveaux View Post
I've seen the MPF102 recommended.
Same pinout, but unfortunately it is being discontinued as well.

-Frank
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  #7  
Old 11-29-2011, 11:21 PM
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Sounds awesome!
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  #8  
Old 11-29-2011, 11:30 PM
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Quote:
Originally Posted by deepestend View Post
Nice. Anyone want to do a run of pcbs so that we can get this going?
Here's what you'll need:

Freeware | Free PCB Design Software | CadSoft EAGLE |
Futurlec - PCB Manufacturing Service and PCB Production
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  #9  
Old 11-30-2011, 05:11 AM
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Originally Posted by deepestend View Post
Nice. Anyone want to do a run of pcbs so that we can get this going?
They give the pcb layout out on the site. You just have to do a transfer.
  #10  
Old 11-30-2011, 07:07 AM
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I just posted on BYOC to see if anyone will do a small run. I have little kids in the house and can't make my own pcb's right now. Too many chemicals.

Would anyone else be interested if I can get a pcb made?
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  #11  
Old 11-30-2011, 07:20 AM
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Quote:
Originally Posted by deepestend View Post
I just posted on BYOC to see if anyone will do a small run. I have little kids in the house and can't make my own pcb's right now. Too many chemicals.

Would anyone else be interested if I can get a pcb made?
Sure. I usually use perfboard but pcbs would be fun.
  #12  
Old 11-30-2011, 07:29 AM
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I've never taken the time to really learn how to do perfboard... how hard is it?

Also, I've been lusting after an audere onboard pre for my new jazz project, but now I'm thinking of just going passive and using this as a pre instead-- well not pre into a power amp, but more of a tone shaper. Any thoughts on that?
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  #13  
Old 11-30-2011, 07:41 AM
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Quote:
Originally Posted by boomertech View Post
I just want to let everyone know that the 2N5457 and all of its sister parts are being discontinued by the manufacturer. Most likely any manufacturer that is using these parts will be changing their designs to accommodate something that will be easier to acquire (I did)… so, there will be old stock available for a while, but expect the price to increase.

Hopefully someone will chime in with an equivalent substitute.

-Frank
it's a shame. seems Fairchild Semiconductor is going to stop producing FET's. Central Semiconductor is still making them though. Check out Mouser.
  #14  
Old 11-30-2011, 07:42 AM
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You can get them through Small Bear right now... they seem to have them in stock.
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  #15  
Old 11-30-2011, 10:03 AM
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Someone over on BYOC will do a run of PCB's for $15 shipped. Anyone interested?
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  #16  
Old 11-30-2011, 10:58 AM
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Possibly, if shipping to Canada is an option. Do you have a link to the BYOC thread?
  #17  
Old 11-30-2011, 11:56 AM
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He's saying that he can do multiples of 4.

There isn't really a thread, I just posted and someone pm'd me.

Here it is:

Build Your Own Clone Message Board • View topic - Make a PCB?

I've been talking to "Twangzilla"
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  #18  
Old 11-30-2011, 12:07 PM
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Cool, thanks. I have a couple guys that have made me pcbs in the past, so I may go with them.
  #19  
Old 11-30-2011, 12:21 PM
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Quote:
Originally Posted by rumblinbass View Post
it's a shame. seems Fairchild Semiconductor is going to stop producing FET's. Central Semiconductor is still making them though. Check out Mouser.
It is a bummer because these FET’s are very popular and economical.
The Central Semiconductor 2N5457 is $0.46 each whereas the Fairchild is $0.15. Mouser has a minimum order of 2,500 for the Central part, so that usually kills it for the DIY’er. I don’t expect that Central price will stay at $0.46 either. Mouser continually changes their prices… I have been hit with up to 600% price increases on some of the parts that I get from them.

Toshiba has also discontinued some of their popular FET’s, namely my favorite 2SK170’s. Linear Systems offers the LSK170 as a replacement with a minimum 1,000 piece buy. That will work out for me, but for the DIY’er it would be a deal breaker.

I just wanted to mention this, because if someone is laying out PCB’s they may want to identify a cheap and easy to get replacement. The pinouts will sometimes vary from one FET to the next and if your making PCB’s that really turns into a PITA.

Like I said before... there will be NOS parts around for a while, but these are VERY popular parts so get’em while you can.

-Frank
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Last edited by boomertech : 11-30-2011 at 12:26 PM.
  #20  
Old 11-30-2011, 12:25 PM
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2N5457 $0.12 - $0.08 at Jameco, mixed manufacturers

2N5457: MAJOR BRANDS: ICs & Semiconductors
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