John Curl's Blowtorch preamplifier part II

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'Bass line' has a definition. It's the music played by the bass instruments (bass guitar, double bass etc). It does not include the drums. Hence my confusion. I could understand drumming giving you an amazing sense of Rhythm but can't understand the correlation between hitting things and the sense of a bass line. Honest question.
 
When I pointed that out, Stuart almost went ballistic. He hates wives? Me, I take it with a grain of salt, but yeah, sometimes the circumstances are such that it can actually be saying something. Sadly many women don't care about hi-fi and, as you say, it's a man's hobby. So anything they say is purely volunteered - but you have to put a blind-fold on them first? Sorry, I am jesting. :D

"Some subjects are so serious that one can only joke about them." Niels Bohr



Joe, it may be just me, but I happen to have a wife who asked for her own system in her room because she loves listening to music. So you can imagine how free audio-wise I really am, she trusts my judgement completely, never ever asked me why I bought whatever. Especially not wne one day she commented that at least 90% of her music collection was in fact bought for her by me.

But what's interesting is HOW she listens to it. Unlike many of us men in general, she does her bet to take it all in in one go, she's not listening to the midrange or treble, she's taking it all in. She wants to hear it all come together for her, and this whole is her reference point. It either carries her, or it doesn't, it's that simple. She doesn't give a damn about her speakers, as long as she doesn't feel shortchanged music wise. The one and only thing she ever asked for was her integrated amp, a Harman/Kardon 680 unit, as the time (in 1999) their top of the line itegrated amp. It's rated at 85 W/8 and 130W/ 4, and it drives a pair of JBL Ti600 floorstanders, rated at 93 dB/2.83V/1m, giving a theoretical peak of (93+19) 112 dB SPL. She doesn't like very loud music, so in practice the amp has an easy life, no way it could ever be pushed to its limits.

So some of us got real lucky, they have understanding wives.
 
Go Joe, go!

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'Bass line' has a definition. It's the music played by the bass instruments (bass guitar, double bass etc). It does not include the drums. Hence my confusion. I could understand drumming giving you an amazing sense of Rhythm but can't understand the correlation between hitting things and the sense of a bass line. Honest question.

What happens when the drummer LOOSENS the screws holding the big drum membranes, takes ione side off and then proceeds to stuff the insides with some junk? After which he forcefully setps on the pedal?

This is alike to the bass guitarist loosening his guitar strings, purposely distorting the guitar for the sake of an effect he want to happen?

Both are in effect detuned, purposely allowed to slide down the frequency scale. As stated above, the drum will slide down to below 50 Hz and will become somewhat muffled, but trust me on this, it will kick your liver around if you happen to be standing near to it.

I don't know where you draw the line between bass and midrange, I believe the line is at around 300 Hz.

If you ever want to hear ultimate bass lines, go to Ulm in Germany and visit their cathedral and listen to an old man checking out the organ, sooner or later he'll get around to sub-40 Hz frequencies. Hear that just once in a superbly acoustic environment and you may well be hooked.

For the Americnas present: the New York 5th avenue cathedral (St. Šaul's, I believe) is said to be an exact copy of the Ulm Cathedral, certainly including its acoustics.
 
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I don't know where you draw the line between bass and midrange, I believe the line is at around 300 Hz.

I think we have a difference of interpretation. If you have said 'I hit things therefore have a good appreciation of real bass'. I would have accepted and agreed. The 'bass line' is an instrumental part. Confusingly of course the bass line is produced by the Rhythm section which DOES include the drums. Go figure.
 
Joe one of my best gauges for a good change in a system is when a women makes a point to say it sounds especially good, or ask if something was changed; one whom otherwise doesn't pay any attention (99% of them?). They are generally as blind to the hobby as it gets, they're literally just asking because they noticed something without looking.

She just wants a new dress.
 
I think we have a difference of interpretation. If you have said 'I hit things therefore have a good appreciation of real bass'. I would have accepted and agreed. The 'bass line' is an instrumental part. Confusingly of course the bass line is produced by the Rhythm section which DOES include the drums. Go figure.

That's like distinguishing between "not square" and "round".

Rhe language is the problem. After all, my mother tongue is not English, but Serbian.

Let me put it this way - a drum kit can be purposely mistuned so as to slip downwards frequency wise and go below its usual range. Where would you put a tympani? Surely not in the midrange, I hope. Where, frequency wise wuld you put the Japanese taiko drummer group?

That said, It's true that a regular drim kit has an exceptionally narrow frequency range, from about 140 down to about 75 Hz (including small, medium and large pieces).
 
The relationship between SY and Mrs SY would seem to have little bearing on Audio though.

Not for me. :D She is a great music scout for me (she was a pro for many years, playing keyboards, guitar, trombone, bass, and vocals), matches my audio-world friends drink for drink and actually enjoys hanging out with them, sets up our house concerts, does the critical photography for my articles, plays Trusty Assistant in my listening tests, sets up and maintains the music server, rips our music to HD, designed and coded my website, and keeps her whining about what my system does to the appearance of the living room to a dull roar.

I tend to be in the kitchen more than she is, fwiw, but she is a superb cook.
 
I? I spent my misbegotten life believing that a kick drum was in the bass region, but please look at post 74904 to see how I was oh so wrong.
You were right in the first place. Drums, esp floor tom and kick, have palpable bass content. Not exclusively bass end energy, but plenty of it, as well as energy across the spectrum which defines tone and timing.
 
'Bass line' has a definition. It's the music played by the bass instruments (bass guitar, double bass etc). It does not include the drums. Hence my confusion. I could understand drumming giving you an amazing sense of Rhythm but can't understand the correlation between hitting things and the sense of a bass line. Honest question.
Honest answer :):
Most of the modern music (Jazz, R'n'R) etc. is based on the rhythm and groove.
Its foundation is build on the rhythm section. Bass, drums, guitar or else, that we usually record together. For a good reason, since it is payed by several musicians, it is supposed to be one part.
More than this, most of the time, drummers use mostly their kick drums to bring 'attack' to the notes of the basses. I cannot imagine to record one in the absence of the other. Look at any live show, the drummer and the bass players are always aside, and never let the other out of his sight and hearing.
 
Unfortunately, or fortunately, there's plenty of work being done in the cognitive sciences/neurosciences to show simply how fallible we humans are and how imagined our reality really is. What we hear is perhaps far, far more up in our head than we probably want to admit.
I absolutely agree and spend my time to underline-this. "Hifi is a make-believe game". On the other side, human senses are far more complex with often more returns than measuring instruments, because able to feel differences than the measuring instruments cannot enlighten. Did they exists, or are the products of our brains ? It does not matter, all this was made to excite our senses. And there is not a single musical instrument in all our galaxy witch was not made by humans (as far as we know ;-)
To want recording and reproducing music to be a pure objective and scientific process is totally a non sens, on my point of view. The exact opposite of the goal. Well, show a photography of a chicken to your cat. Is he going to try to lick-it?
 
You were right in the first place. Drums, esp floor tom and kick, have palpable bass content. Not exclusively bass end energy, but plenty of it, as well as energy across the spectrum which defines tone and timing.

Bravo, that's it. You said exactly what I meant to say. I own an LP by a local group where intentional de-tuning was done, just so the floor kick drum could be "creatively misused". I swear, when hit with force, you were just short of actually seeing the concentric sound waves emanate from the drum. Not due to the frequency as such, I estimate it was somewhere 50-60 Hz, but in combination with the sheer force of the sound, the experience was jaw dropping.

I am particularly sensitive to the drum kit and below because I did some time on it, or because I'm some bass freak, but because my feeling is that this is what creates the basic tempo of the music, it's there not so much to dominate, but to help carry the tune. Unfortuately, this is where a lot of amp/speaker combinations either fall short of the objective, or in case of miniature spekaers so touted today, simply don't have the capability to reproduce a good 50 HZ fundamental.
 
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Unfortuately, this is where a lot of amp/speaker combinations either fall short of the objective, or in case of miniature spekaers so touted today, simply don't have the capability to reproduce a good 50 HZ fundamental.

Small rooms and small budgets have meant that I have never had that much below 100Hz in my system, but after 14 years parked in a corner I am close to getting my subwoofer working. Too many kids does slow projects down! Will be interesting to see what I find when I can go flat to 20Hz.
 
Richard,
Way back in post #74835 you asked about opamps with access to the VAS stage.

The AD744 allows such access, and while I haven't tried it, LTspice modelling shows it look promising. Attached are some LTspice models and symbols that you can try.

Regards,
Paul Bysouth

Yes, an external PNP, base to 5, emitter to 6, and collector to V- bypasses the internal lateral PNP (this predates complimentary processes). And John says we never thought of him. :)
 
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