Search found 700 matches

by Gold
Tue Apr 21, 2015 1:33 pm
Forum: Pro Audio Design
Topic: Tilt Equalizer
Replies: 35
Views: 66910

Re: Tilt Equalizer

I guess I'm confusing matters by using the word tilt. I pictured the EQ I'm describing as each band having a knob for gain and for frequency select, like a normal EQ. When I was talking about the bandwidth of the shelf I was refering to 'slope' of the shelf. I don't like using the word slope with sh...
by Gold
Mon Apr 20, 2015 7:28 pm
Forum: Pro Audio Design
Topic: Tilt Equalizer
Replies: 35
Views: 66910

Re: Tilt Equalizer

I was just giving my idea for a fully featured "tilt like" EQ. I have lots of parametric bands at my disposal. I look at it as 'more than a tilt' not 'less than a full featured EQ'. The consoles at Bernie Grundman use a graphic EQ as the main EQ. I think it's a modified UREI.
by Gold
Mon Apr 20, 2015 1:29 pm
Forum: Pro Audio Design
Topic: Tilt Equalizer
Replies: 35
Views: 66910

Re: Tilt Equalizer

For the two low bands I'd want band one to be about 30hz to 250Hz and band two to be 200hz to 800hz. I would only need +/- 3dB but others would probably want more. Band one would be mostly for cutting. I think a medium narrow bandwidth for this. Band two would be the broad strokes band so this shoul...
by Gold
Sun Apr 19, 2015 2:38 pm
Forum: Pro Audio Design
Topic: Tilt Equalizer
Replies: 35
Views: 66910

Re: Tilt Equalizer

I have used tilt EQ in the side chain of noise gates where they were pretty effective at improving the selectivity of the gate helping key on or ignore frequency spectra. That sounds like an ideal application. I often do what a tilt EQ does but a tilt EQ is not flexible enough for daily use. I want...
by Gold
Sat Apr 04, 2015 12:12 am
Forum: Pro Audio Design
Topic: Flat Phono Preamp Based on John's P10 and 2SK389
Replies: 248
Views: 454964

Re: Flat Phono Preamp Based on John's P10 and 2SK389

Thanks for the detailed response Wayne. I think I didn't quite understand what was going on. Correct me if I'm wrong. The top 1240 is acting as the third opamp in an instrumentation amp. This third opamp provides the CMRR in an instrumentation amp. The second 1240 is a clever way to provide a balanc...
by Gold
Fri Apr 03, 2015 5:40 pm
Forum: Pro Audio Design
Topic: Flat Phono Preamp Based on John's P10 and 2SK389
Replies: 248
Views: 454964

Re: Flat Phono Preamp Based on John's P10 and 2SK389

I have a couple of questions about the schematic. What is the advantage of using the instrumentation amp over the THAT microphone preamp IC? (My guess is source impedance). Why use the 1240's as line drivers and not a 1646?
by Gold
Fri Apr 03, 2015 5:37 pm
Forum: Pro Audio Design
Topic: Flat Phono Preamp Based on John's P10 and 2SK389
Replies: 248
Views: 454964

Re: Flat Phono Preamp Based on John's P10 and 2SK389

I have to say this is pretty awesome. I've had what this is rolling around in my head for a long time. Some features that I think would be very useful in the base station would be isolated balanced +4dbu outs and consumer RCA outputs. A meter buffer and adjustable output gain. This may be outside th...
by Gold
Fri Oct 31, 2014 3:51 pm
Forum: Document
Topic: Texas Instruments 1954 Annual Report Cover
Replies: 6
Views: 11853

Re: Texas Instruments 1954 Annual Report Cover

Yeah, WOW. Very Dali but more "in the style of" than plagiarism. That must have cost some money and had an executive patron. Nowdays they'd just buy a Koons.
by Gold
Fri Aug 01, 2014 11:19 am
Forum: Pro Audio Design
Topic: Using the Precision MS Matrix for Mono Crossover LF Blending
Replies: 54
Views: 125090

Re: Using the Precision MS Matrix for Mono Crossover LF Blen

I took a look around but couldn't find the NTP docs. When I run across them I;ll post them.