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[theo mack]

How about a group buy of a cool blue engraved face plate.

Oh, and What will be the name of this EQ ?

How about the Blackwood 1? Are you too bashful for that brad?

How about the EQ-BW-2 ?

[bblackwood]

theom wrote on Thu, 12 August 2004 10:04

How about a group buy of a cool blue engraved face plate.

We could do a group buy of the faceplate, sure. But for a few dollars more, everyone could customize it as they wish...

Quote:

Oh, and What will be the name of this EQ ?

Whatever you want...

Quote:

How about the Blackwood 1? Are you too bashful for that brad? How about the EQ-BW-2 ?

Oh, no way. Forget that, not a chance. I'm not doing anything worthy of putting my name on the front panel, just lifting designs out of the Audio Cyclopedia...

[JPRisus]

bblackwood wrote on Thu, 12 August 2004 09:56

OK, the consensus seems to be passive filter sections, 'boost' and cut on 2 bands (hi and lo freqs) with a midband cut, 990-style opamp factor. Again, I'll start crunching numbers ASAP and after everything is checked in Spice, somebody will do the board layout for us...

sounds killer, can't wait!

[chrisj]

Brad, it wouldn't be happening the way it is happening if not for you. Someone's gotta row the boat, you know? Go ahead and let your name be used. If you don't like that we could use a diminutive, like 'The Bradlet'
I'm following this thread very closely as I'm expecting to eventually make a modular digital/analog hybrid console that sums the outputs of some DACs through discrete Pultec-esque circuits to analog outs, but I haven't the slightest desire to clone anything, just to make a decent passive EQ that does what I want. As such, this project is going to be terribly useful to me for study

[JPRisus]

chrisj wrote on Thu, 12 August 2004 13:22

I'm following this thread very closely as I'm expecting to eventually make a modular digital/analog hybrid console that sums the outputs of some DACs through discrete Pultec-esque circuits to analog outs, but I haven't the slightest desire to clone anything, just to make a decent passive EQ that does what I want. As such, this project is going to be terribly useful to me for study

Funny you should mention that Chris... I'm thinking of a similar thing, probably an 8-into-2 (or pair of 4-1) summing bus with Jensens (or Sowters) on the inputs, running into my DRS-2 for makeup. Tranny stage for tone, maybe attenuators on the inputs (maybe not).


As for our EQ names, how about EQphonic , or Euphonic-Q? I'm all for a tribute to the skipper on this one, even if he's too damn humble to want his own name on it!

[OTR-jkl]

REPhonic EQ-1

[bblackwood]

Seriously guys, we're not naming it after me or my company. I'm designing nothing here, just copying others' work.

Why not name it something like 'LCREQ' or 'PPEQ' or name it after your company - you guys are the ones building them...

[theo mack]

how about:

 the

                 R/E/P-EQ


I still think it will be known as the Blackwood EQ, but naming it after this board might be cool.

[mcsnare]

B Rad-E-Que

[JPRisus]

or just B-B-EQ, hehe

[theo mack]

or:

 BARB-EQ

[JLM Audio]

Just thought this might be of interest here



The drawing just shows how a opto compressor and/or passive EQ with no makeup amp can be inserted in our JLM99xMB Mic Pre PCB.



It is not to hard to make a switchable passive eq that can be switched by center off toggle from cut / off / boast like the massive passive. Summit Audio actually did this in there EQF-100 years before the massive passive arrived. But the EQ bands have to be laid out in a different way to the normal PEQ-1A to get the cut/boast on each EQ band. The simple Pultec PEQ-1A passive EQ with good balanced input amp and makeup amp is pretty unbeatable for all applications. Photo of two custom JLM mastering PEQ1 fully 0.5dB switched and bypass relays can be interlocked. All parts have to hand matched so left and right track each other perfectly for mastering. We use fft to trim both sides to less than 0.1dB difference.

[mcsnare]

Brad, can you get Dave Hill to design a "flavor" circuit for the B-B-EQ. Two positions "wet" or "dry" or alternately "Memphis" or "Texas"....
Dave

[JackJohnston]

If this is moving forward, I would love to be part of it.

Jack Johnston
jackjohnston99@hotmail.com

[malice]

Yeah, is this still a project or what ?


malice