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Post by leonski on Jan 19, 2015 5:36:14 GMT -5
The sleeve should list frequencies of the test tracks.
For example,
I have the disk from Rives Audio which is calibrated to the Radio Shack Analogue SPL meter. If I wanted to go thru the trouble, I could probably dial my system in somewhat closer that it now is.
My Sub, a HSU Research came with a decent set of test tones and some really neat music.
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Post by novisnick on Jan 19, 2015 5:46:50 GMT -5
The sleeve should list frequencies of the test tracks. For example, I have the disk from Rives Audio which is calibrated to the Radio Shack Analogue SPL meter. If I wanted to go thru the trouble, I could probably dial my system in somewhat closer that it now is. My Sub, a HSU Research came with a decent set of test tones and some really neat music. The HSU web sight has those test tones, you just have to dig to find them! One of these days I'll bookmark them and post the page. Sorry, it's late and I'm not hunting right now.  |
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Post by Boomzilla on Jan 19, 2015 6:27:05 GMT -5
Richard Strauss' "Also Sprach Zarathustra" has a 16 Hz pedal tone at the beginning. It can't be heard but most definitely can be felt IF (and it's a big "if"), you have a subwoofer capable of going that low. Most don't. When I had my Definitive Technology Trinity subwoofer, I often played my discs with subsonic information just to feel the vibrations. My wife, however, proved to be most unhappy with the effect, and the Deftech and I parted company. Many of the Telarc CDs were recorded with material below 20 Hz. Coming immediately to mind are Saint Saens "Organ Symphony," the afore-mentioned 1812 Overture by Tchaikovsky, and some organ works by Charles Marie Widor. Additionally, much of the music designed for car stereo (D.J. Magic Mike comes immediately to mind) has subsonic information on the CD. Many of the Telarc CDs even have warnings on the jacket saying that subsonic information is included and that it can damage speakers. So, regardless of Sony's "Blue Book" specifications, many CDs can and do have below-20Hz content. Phonograph records, on the other hand, rarely have bass this low. Why? Several reasons - The groove-cutting issues are difficult for the mastering to control at the record production end. At the playback end, most cartridges (and tone arms) can't track that low without damaging the stylus cantilever and/or the record groove. The record warp frequency lies in the 16 Hz. range, and most playback systems have either "sub-sonic filters" or modifications to the RIAA curve compensation that roll off the bass so as to avoid reproducing high-amplitude record warp. In fact, the RIAA standard itself specifies a roll-off below 50 Hz for rumble control ( www.fact-index.com/r/ri/riaa_equalization.html). And finally, acoustic feedback is a major problem for turntables at the very low frequencies; in other words, the sound from the speakers forms a feedback loop with the turntable causing distortion (and often, vinyl damage). So ultimately, phonograph records are a significantly inferior option for sub-sonic bass than are CDs. Boomzilla |
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Post by jutta on Jan 19, 2015 6:38:29 GMT -5
'Woofer Cooker' - that's the name of one of the sub test tracks I have.
And the other has just come to me also: Opus Dei (I think)
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Post by novisnick on Jan 19, 2015 6:53:35 GMT -5
Richard Strauss' "Also Sprach Zarathustra" has a 16 Hz pedal tone at the beginning. It can't be heard but most definitely can be felt IF (and it's a big "if"), you have a subwoofer capable of going that low. Most don't. When I had my Definitive Technology Trinity subwoofer, I often played my discs with subsonic information just to feel the vibrations. My wife, however, proved to be most unhappy with the effect, and the Deftech and I parted company. Many of the Telarc CDs were recorded with material below 20 Hz. Coming immediately to mind are Saint Saens "Organ Symphony," the afore-mentioned 1812 Overture by Tchaikovsky, and some organ works by Charles Marie Widor. Additionally, much of the music designed for car stereo (D.J. Magic Mike comes immediately to mind) have subsonic information on the CD. Many of the Telarc CDs even have warnings on the jacket saying that subsonic information is included and that it can damage speakers. So, regardless of Sony's "Blue Book" specifications, many CDs can and do have below-20Hz content. Phonograph records, on the other hand, rarely have bass this low. Why? Several reasons - The groove-cutting issues are difficult for the mastering to control at the record production end. At the playback end, most cartridges (and tone arms) can't track that low without damaging the stylus cantilever and/or the record groove. The record warp frequency lies in the 16 Hz. range, and most playback systems have either "sub-sonic filters" or modifications to the RIAA curve compensation that roll off the bass so as to avoid reproducing high-amplitude record warp. And finally, acoustic feedback is a major problem for turntables at the very low frequencies; in other words, the sound from the speakers forms a feedback loop with the turntable causing distortion (and often, vinyl damage). So ultimately, phonograph records are a significantly inferior option for sub-sonic bass than are CDs. Boomzilla Boom, your PSA XV15se does 16 hz without effort! Believe me, mine sure do. It can be heard,,,,,,,,,,,,indirectly!! he,,,he,,,he,,,, Everything in the room shakes, therefore making a lot of noise!! This ISO a case of cause and effect. Now, a pair of these subs, check with your insurer first!!  |
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Post by Boomzilla on Jan 19, 2015 7:05:47 GMT -5
,,,your PSA XV15se does 16 hz without effort! Believe me, mine sure do. It can be heard,,,,,,,,,,,,indirectly!! he,,,he,,,he,,,, Everything in the room shakes, therefore making a lot of noise!!... The XV15se subs may go to 16 Hz, but my earlier "non-se" edition doesn't (at least not very loudly). The fact that my sub does NOT go that low was one of the major factors in my purchase, since my better half doesn't like subsonic information. She still doesn't like the sub, but she tolerates it mostly. |
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Post by novisnick on Jan 19, 2015 7:19:45 GMT -5
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Post by novisnick on Jan 19, 2015 7:22:43 GMT -5
,,,your PSA XV15se does 16 hz without effort! Believe me, mine sure do. It can be heard,,,,,,,,,,,,indirectly!! he,,,he,,,he,,,, Everything in the room shakes, therefore making a lot of noise!!... The XV15se subs may go to 16 Hz, but my earlier "non-se" edition doesn't (at least not very loudly). The fact that my sub does NOT go that low was one of the major factors in my purchase, since my better half doesn't like subsonic information. She still doesn't like the sub, but she tolerates it mostly. I'm so blessed! My Mrs. Is pretty much a bass head when it comes to the HT! Movies are just so much more fun when the Deathstar blows up the room!!! |
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Post by leonski on Jan 19, 2015 13:16:05 GMT -5
SPEAKER WARNING::
Please be careful with very low bass and 'normal' speakers. They generally do NOT like it. The first time I played the Telarc Recording of 'Wellingtons Victory' with LIVE 12pounder cannonfire and volleys of MUSKETfire, I 'bout destroyed my room mates speakers. We went running into the house. I expected to see the Woofer Cones had been Launched across the room and still connected with a little curly-q of voice coil wire!
Speakers incapable of reproducing the fundamental MAY produce 2x that frequency, a Phenom known as 'DOUBLING'. Be CAREFUL here, if you THINK you are getting 'real' bass, you may simply be torturing your drivers.
Low Cutting the MAINs is a decent idea. I NOW do so and feed bass ONLY to the sub.
And yes, Boom, you are correct. I've already mentioned the Saint Sans Symphony #3 'With Organ'. Finding a correct recording, however, may be another issue.
And Yes, again. many of the 'kids' here who never experienced VINYL have also NEVER seen a woofer INAUDIBLY go in and out at some horrible infransonic frequency, due to record warp.
My now gone NAD1700 Tuner / Preamp had such as you mention, a real good infrasonic filter. It was a back panel control and I simply left it ON.
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