Fdeck's HPF - Page 13

fdeck · #**241** 08-16-2012, 08:08 PM

Quote:

Originally Posted by Jazzdogg

Mine doesn't have the black plastic jacks and nuts. Shall I send it back to you?

Yup. I took pics just to illustrate the difference.

By the way, I noticed that postage can get expensive if you choose all of the bells and whistles. I recommend First Class, which now has a delivery confirmation option. If you get delivery confirmation, then you might as well skip insurance. There would be no point in trying to recover the loss if a preamp is delivered but damaged, since I can just build a new preamp if that happens.

caeman · #**242** 08-16-2012, 08:19 PM

Michelsen, good news, yours has the black jacks. I will have it out in the post office by Monday.

esa372 · #**243** 08-16-2012, 08:39 PM

Quote:

Originally Posted by fdeck

Yup. I took pics just to illustrate the difference.

By the way, I noticed that postage can get expensive if you choose all of the bells and whistles. I recommend First Class, which now has a delivery confirmation option. If you get delivery confirmation, then you might as well skip insurance. There would be no point in trying to recover the loss if a preamp is delivered but damaged, since I can just build a new preamp if that happens.

Thanks for the info, fdeck.

I'll be sending mine back for the upgrade tomorrow.

fdeck · #**244** 08-16-2012, 08:41 PM

Quote:

Originally Posted by esa372

Thanks for the info, fdeck.

I'll be sending mine back for the upgrade tomorrow.

Thanks. I'll be spamming everybody who got one of these.

makohund · #**245** 08-16-2012, 09:14 PM

Mine is metal-jacked. Seems to work well, other than the LED.

I'd miss my shiny jacks, and as a rare prototype, wouldn't I be sacrificing its future value as a collectors item?

Oh, well.

bongomania · #**246** 08-16-2012, 09:29 PM

Quote:

Originally Posted by fdeck

Yup. I took pics just to illustrate the difference.

Ooh! Ooh! When I order mine, do I get to pick whether it has "GOOD" or "BAD" silkscreened on it?

fdeck · #**247** 08-16-2012, 10:08 PM

Quote:

Originally Posted by bongomania

Ooh! Ooh! When I order mine, do I get to pick whether it has "GOOD" or "BAD" silkscreened on it?

In a future version, there will be a LCD panel that automatically analyzes your playing, gear, clothing, and general attitude. But beware: I'm an upright player, and I have my biases.

Michelsen · #**248** 08-17-2012, 02:55 AM

Quote:

Originally Posted by caeman

Michelsen, good news, yours has the black jacks. I will have it out in the post office by Monday.

Great ! Thank you !

Wild Rice Chris · #**249** 08-17-2012, 06:09 AM

Quote:

Originally Posted by fdeck

In a future version, there will be a LCD panel that automatically analyzes your playing, gear, clothing, and general attitude. But beware: I'm an upright player, and I have my biases.

Nice.

I'm still trying to figure out how I can justify a Series 3 when I already have both previous versions and am totally satisfied. Would running them back to back imitate the double filter enough? I think I need to pull out the true bypass looper for some tests.

MuthaFunk · #**250** 08-17-2012, 07:03 AM

Quote:

Originally Posted by bongomania

Ooh! Ooh! When I order mine, do I get to pick whether it has "GOOD" or "BAD" silkscreened on it?

LOL!! I totally want the one that says "BAD" upside down on it...but with the plastic jacks.

**Chef** · #**251** 08-17-2012, 07:12 AM

Spam received; thanks!

Rather than GOOD or BAD on mine, I'd rather have BMF on there.

Quote:

Originally Posted by fdeck

Thanks. I'll be spamming everybody who got one of these.

caeman · #**252** 08-17-2012, 08:44 AM

Turkey spam tastes the best.

Stompin Tom · #**253** 08-17-2012, 09:18 AM

Quote:

Originally Posted by fdeck

Tom, thanks for noting that. I posted a picture of the original DIY concept at greenboy's forum, but haven't taken it beyond that point yet. I tested two different designs for my product. One uses discrete JFETs and the other uses a quad op amp chip. I went with the op amp for the product, but the JFET circuit is the one that's easy to build by hand. So I will publish schematics for both, along with a pictorial guide for hooking up the JFET version. It's a fun project because I found a mini turret board that makes hookups a snap.

There is a drawback to the JFET version, which is that JFETs are getting harder and harder to get. But the desirable op amp chips only come in surface mount versions.

Thanks! That'd be awesome. I do hate working with surface mount stuff... so I'll probably tackle the jfet version. I don't know which one's you used, but I have a pile of different fets at home. Also, any details on how you put it together using the turret board would be cool...

Also, if you put together a DIY kit, I'd be happy to purchase one to help support your efforts.

**bassboysam** · #**254** 08-20-2012, 03:34 PM

Got my series 3 today, metal jacks so the LED doesn't work but that's ok. I tried it with my passive p-bass and my 4001 Ric, and put it right before all my pedals, no distortion at all and it seems to be doing its job.

Quick question, is the volume supposed to provide any boost? I'm not getting any and volume on full is about unity.

**Chef** · #**255** 08-20-2012, 03:35 PM

Did you try after the pedals, or in the fx loop?
I've found different heads/basses respond differently to this, and it's not a "one size fits all" for me as to where it's going to work best...

**bassboysam** · #**256** 08-20-2012, 03:42 PM

Quote:

Originally Posted by Chef

Did you try after the pedals, or in the fx loop?
I've found different heads/basses respond differently to this, and it's not a "one size fits all" for me as to where it's going to work best...

I have not, all but one of my amps don't have fx loops so I can't see myself using it there. I'll try after my pedals just to see but the reason I bought it was to give my pedals more headroom. My OD and fuzzes sound a lot smoother with less sputter and glitchyness.

caeman · #**257** 08-20-2012, 03:43 PM

I tried Michelsen's in front of the GK's preamp, and in the FX loop. It seems to work just fantastic either way. It has the corrected black jacks. Michelsen, it will be to the post office in the morning.

Cool little box. I like the metal over the plastic of the S2.

sunbeast · #**258** 08-20-2012, 04:19 PM

Quote:

Originally Posted by bassboysam

Quick question, is the volume supposed to provide any boost? I'm not getting any and volume on full is about unity.

If I understand correctly, V1 and V2 are capable of boost and are actually "preamps", whereas V3 is just designed to run at unity gain. The upside of this is that the V3 is capable of recieving/sending a much stronger signal than V1/V2, which did not really work well anywhere but at the beginning of the chain in my experience.

**bassboysam** · #**259** 08-20-2012, 06:59 PM

Well it passed the wife test. I did not tell her what the HPF does or what to expect from it, I just asked her do you hear a difference?

She said yes, with the HPF the fuzz and OD pedals sounded a "lot more clear, no more ugly sounds."

fdeck · #**260** 08-20-2012, 07:20 PM

Quote:

Originally Posted by sunbeast

If I understand correctly, V1 and V2 are capable of boost and are actually "preamps", whereas V3 is just designed to run at unity gain. The upside of this is that the V3 is capable of recieving/sending a much stronger signal than V1/V2, which did not really work well anywhere but at the beginning of the chain in my experience.

That's right. In addition, the actual amount of boost provided by Series 1 and 2 is only about 2 dB, and is just a side effect of the circuit design. And like you say, dropping down to unity gain was one of the measures to increase the signal levels that the circuit can handle.

For better or worse, I adopted the term "preamp" for the product based on what is probably an arcane definition from the world of electronic measurement: A "preamp" is a circuit that manages the physical interface to a sensor and produces a robust output signal. That definition is more applicable to upright bass than to electric, but I decided to stick with the HPF-Pre "brand name" anyway.

In the audio world, I should have called it a "buffer," but "HPF-Buff" just doesn't sound right.