2nd Winters EQ done!! New Design. That makes 2 EQ systems I have.

[NavyBass]

That makes 2 different EQ's I can offer for the basses.

This one is much more straight forward. It has a Bass, Midrange, and Treble controls, just like the other ones out there (EMG, Ibanez, etc).

How I started on this project was; I just got an OLP Musicman Stingray 5 and wanted to make it more like the real Musicman which meant I needed a 3 band eq. So, I sat down at my drawing board to see what I could come up with and came up with my new design. Where it differs from all the other EQ's out there is that it's a boost only system (not a boost/cut). It's similar to the Aguilar eq's since they use boost only systems also. The big difference is that it is very responsive, more responsive than other ones out there. It also uses less components than other systems out there.

As soon as I get it mounted in the OLP I'll post soundclips of it.

I'm planning on making this one available as one that the customer can install into a bass themselves.

[BassVirtuoso]

Sorry if this is wrong, I'm not good with these, but can you change it between active and passive mode?

[Tryxx]

That is kind of cool, I'm kind of interested in that, though is disrupts the semetrical scheme on the other bass. :p

[NavyBass]

Sorry if this is wrong, I'm not good with these, but can you change it between active and passive mode?

That's very easy to do, all I have to do is add a switch.:thumb:

[Jimbobntnr]

Would these be available in a self contained unit? I need a pre for my upright, and would like it right behind the tailpiece.

[NavyBass]

Would these be available in a self contained unit? I need a pre for my upright, and would like it right behind the tailpiece.

I could do that. She can run at 9 or 18 volts depending on space requirements.

[The Forgotten Bassist]

Cool, I'm quite interstd in changing the pre in my OLP 4 string, how much are you talking about for this idea, and would you be supplying it on a Stingray mounting board?

[SlashFortyForty]

Could you use it as a preamp to run into a PA?

[Jimbobntnr]

ok, let's talk $$ / ship date then. 2 rca in 1/4 out, with blend? and dice knobs? ****. Get ahold of me.

[Tryxx]

I'm just noting that James is cool to work with. :D

[sanray]

I could do that. She can run at 9 or 18 volts depending on space requirements.

What is the advantage of using 18 volts?

[faelun]

hey what ever happeened to good ole JP?

[Jimbobntnr]

hey what ever happeened to good ole JP?
+4 irony points!
(today's NavyBass is yesterday's JPBass)
thanks Tryxx!

[LewsTherin]

What is the advantage of using 18 volts?


More headroom, which means a cleaner signal.

[NavyBass]

Cool, I'm quite interstd in changing the pre in my OLP 4 string, how much are you talking about for this idea, and would you be supplying it on a Stingray mounting board?

I can put it on a stingray type board, or a rectangular board. As a matter of fact, the one I just built is on a Stingray type board that I etched myself (obviously).

As far as going straight in to a PA, it doesn't have a balanced output, so you'd have to go into the unbalanced (1/4") side. I can, however, make a balanced output for it, but that is much more circuitry. A balanced output is not just an XLR conector, there is some associated circuitry that goes along with it.

[FunkMetalBass]

What is the old Winters EQ like? The only thing I knew about it was that it a bunch of knobs and switches.

[edgebass5]

Hey JP, you need to work up an onboard preamp design that has an output voltage in the ballpark of 600mV so you could adequately drive a power amp with your bass and nothing in between :naughty:

Oh! and it has the output as a balanced XLR :D

[Tryxx]

One on mine is having this:

3 Band EQ
Volume
Balance
Bandwidth
Frequency
Active/Passive Switch
Series/Parallel Switch (for one pup)
Series/Parallel/Singlecoild (for the other pup)

[NavyBass]

What is the old Winters EQ like? The only thing I knew about it was that it a bunch of knobs and switches.


It's a semi-parametric EQ. It has Bass/Mid/Treble controls, but also has a Frequency and Resonance (bandwidth) controls which effectively changes the center point of the EQ curve. That's a simple explanation. One of these days I have to sit down and write a good description of it.

[FunkMetalBass]

I want the second EQ with the frequency and resonance controls.

[The Forgotten Bassist]

How much you talking for this, not including shipping JP?

[NavyBass]

Hey JP, you need to work up an onboard preamp design that has an output voltage in the ballpark of 600mV so you could adequately drive a power amp with your bass and nothing in between :naughty:

Oh! and it has the output as a balanced XLR :D

I was actually thinking about doing that. I wondered how it would go over. I was actually also thinking about it having a built in compression circuit.

[ebe9]

It's a semi-parametric EQ. It has Bass/Mid/Treble controls, but also has a Frequency and Resonance (bandwidth) controls which effectively changes the center point of the EQ curve. That's a simple explanation. One of these days I have to sit down and write a good description of it.

Yikes!!

So what happens if you then run that into a parametric EQ amp?

Too much tone control..........:thumb:

[FunkMetalBass]

How hard is it to make an EQ that boosts/cuts certain frequencies?

I was wondering how to go about doing this.

[Tryxx]

Yikes!!

So what happens if you then run that into a parametric EQ amp?

Too much tone control..........:thumb:

I'm going to do it, but I use the Walkabout flat most of the time.

[NavyBass]

How hard is it to make an EQ that boosts/cuts certain frequencies?

I was wondering how to go about doing this.

It's just a matter of changing the RC tank circuit to hit those frequencies. It just involves some simple electronics mathematics.

[NavyBass]

How much you talking for this, not including shipping JP?

I have to figure that out. Probably in between the price of similar EMG and Aguilar units, about $125.00 including pots, Aguilar units doesn't include them I believe.

[The Forgotten Bassist]

I have to figure that out. Probably in between the price of similar EMG and Aguilar units, about $125.00 including pots, Aguilar units doesn't include them I believe.

Cheers, I'll hopefully be getting in touch with you about it soon :thumb:

[NavyBass]

Cheers, I'll hopefully be getting in touch with you about it soon :thumb:


Ok, sounds good.:thumb:

[edgebass5]

I was actually thinking about doing that. I wondered how it would go over. I was actually also thinking about it having a built in compression circuit.

Wow.... Onboard EQ..... 600mV balanced output AND onboard compression.... :lol: not to mention the 36V power supply you'd need to run it all :p

[NavyBass]

Wow.... Onboard EQ..... 600mV balanced output AND onboard compression.... :lol: not to mention the 36V power supply you'd need to run it all :p


I should be able to do it on 18v. The compression unit would be a simple one, nothing like the rack mount units, just a simple 1 knob unit like on most amps.

[LewsTherin]

I should be able to do it on 18v. The compression unit would be a simple one, nothing like the rack mount units, just a simple 1 knob unit like on most amps.


is there anyway you could make it so that the one knob does two things, a) increase the amount of compression, and b) make the knee harder as you compress more, so that way you can get a little bit of soft compression, or you can crank it to get some nice chunky compression?



or is that too much to do?

[faelun]

+4 irony points!
(today's NavyBass is yesterday's JPBass)
thanks Tryxx!


wait sooo navybass=JPbass?

[Tryxx]

+4 irony points!
(today's NavyBass is yesterday's JPBass)
thanks Tryxx!

Not a problem. How's the bridge working out?

(I missed this post because I was looking for the Black Flag avatar.)

[NavyBass]

wait sooo navybass=JPbass?


Yep. The reason for the name change is because Navybass is what I'm known by on all the other forums I'm on, besides there was also some confusion with another user Jbass and there was also some confusion with me and another luthier of JPbasses.

As far as the soft knee/hard knee thing, this is going to be a simple compressor onboard. I might be able to add a switch to go between soft and hard knee.

[FunkMetalBass]

It's just a matter of changing the RC tank circuit to hit those frequencies. It just involves some simple electronics mathematics.

Now if only I knew what an RC tank circuit was or how to change it...

[NavyBass]

Now if only I knew what an RC tank circuit was or how to change it...

It's a resistor/capacitor circuit. Depending on the values of the resistor and capacitor, that deturmines what frequency will be affected.

[FunkMetalBass]

I see.

**is electronics n00b**

Resistors and capacitors cost..what..$5?

[Jimbobntnr]

Not a problem. How's the bridge working out?

(I missed this post because I was looking for the Black Flag avatar.)

The bridge is currently acting as a paperweight. It's what I was looking for but it's going to be a part of a larger project which is still short parts.

[LewsTherin]

I see.

**is electronics n00b**

Resistors and capacitors cost..what..$5?

caps and non-variable resistors are pretty cheap. Small value caps go for like $.25 to $.50, larger values can go for a few bucks a peice (note, this is if youre buying them individually, obv. bulk discounts can apply for people like JP who probably order them in large amounts).

[LewsTherin]

As far as the soft knee/hard knee thing, this is going to be a simple compressor onboard. I might be able to add a switch to go between soft and hard knee.


thats cool, but would it be possible to do with one knob, the way i described?

[FunkMetalBass]

So why do EQ's cost so much if they are so relatively cheap to make?

[LewsTherin]

So why do EQ's cost so much if they are so relatively cheap to make?

just because some components dont cost much doesnt mean a) the rest of them dont cost much and b) they arent hard to make.


pots, for example, arent nearly as cheap as non-variable resistors. Youre looking at atleast $10 for every pot, more if you use stacked, push-pull, or slide pots.

and from what i hear, EQs can be a little labor-intensive to make, too.

[FunkMetalBass]

Oh okay.

I just wanted to change one of the knobs on my guitar to a treble boost/cut, so I was wondering how much it would set me back.

If not, I want to install an 8-band graphic eq.