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Tuesday, May 05, 2009

BOTTOM END MUSICAL BASS & TRANSIENT TEST RECORD




M&K Realtime
1979
45 RPM
STEREO


This record is intended to provide source material containing very low frequencies, great dynamic range and transient, high impact sound. The record was cut at 45 RPM and at lower than average level to accommodate heavy bass transients and other high level peaks within the allowable range of disc recording and playback.

MILLER & KREISEL SOUND CORPORATION
8719 Wilshire Boulevard, Beverly Hills, California 90211 - (213)652-8318


SIDE A:



Musical Selections


CANNON CRESCENDO FROM 1812 OVERTURE

The cannon shots are twin howitzers recorded outdoors avoiding the horrible jumble of indoor reverberation which masks so many cannon effects in 1812 recordings. These shots should sound sharp, with great floor and wall impact. If you do not get a sharp impact with a wall bending, pants flapping, low frequency content, you are not getting what is on the record. Look for possible improvements in subwoofer corner placement or amplifier clipping problems. Also be sure you are not listening in a standing wave null. Change your listening position. With a sub-woofer with great transient response, this is an excellent lease breaker. 1:33

PIPE ORGAN AND ORCHESTRA
Rolling organ low bass under dynamic chords. Tympani to contrast transient bass with organ tones. Listen for harps and for cymbal crescendows. This music is one fo the severest tests for great quantities of clean, low bass. Played ona great system without intermodulation, it is mind boggling. On a poor system, forget it. 3:48

PIPE ORGAN AND SAXOPHONE

A thrilling blend of organ and wind instrument in a classical passage of rare beauty. Again, without lots of deep clean bass below 70Hz, the dranatic impact is greatly reduced. 2:04

MUSIC BOX WITH HIGH BELLS
Realism is conveyed by the mechanical lever sounds and the severe impact of high bells. Such transient sounds, whose start is close to a single pulse of high energy, require the entire spectrum for their reproduction. :42

FLAMENCO
Rapid complex footwork of both great impact and delicacy. To get impact which is both floor shaking and clearly defined requires an excellent sub-woofer. 1:10

PLAYER PIANO WITH CHEST ORGAN & XYLOPHONES
A truly startling piece when played on a system with great transients and dynamic range. If you don't tingle and vibrate with this, you need a better sytem. It also had melodic, subtle flute sounds in the background. 1:12

BASS SIDE DRUM AND TYMPANI (ALEXANDER NEVSKY)
Brilliant showpiece for the impact that tight, low bass can add to great music. A good test for everything a great system can do. 1:56

CHEST ORGAN

The flute sounds and air rushing over the reeds combined with mechanical background sounds make a rare test of realism in reproduction of sound. :48

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SIDE B:



Repeating Test Source Material

PIPE ORGAN
A low C organ pedal (32Hz fundamental) repeated 6 times to enable the woofer to be switched off and on with identical signals. It is near the threshold at which feeling and hearing occur at nearly the same level. Objects in the room and walls will often vibrate. Standing waves in the room are common and you may find very high bass intensity in the room corners and relatively little in the room center :44

STRING BASS WITH MODERN JAZZ GROUP
Notice the different characteristics of the stop and start transients in this as compared with drums, for example. Repeated 6 times for ready comparison. Useful in comparing various makes of sub-woofers to see which reveal the instrument and which disguise it or present only their own slow rising response. 1:20

FLAMENCO
6 repeats of a dancer on a 3 foot high wooden stage to help judge floor impact, and soft vs. hard, high-level bass transients. :46

CANNON SHOTS
2 real howitzer cannons fired simultaneously for level and impact comparisons between speakers. 10 repetitions. Notice the need for low frequency content to accurately reproduce a heavy, sudden shock wave. These were recorded outdoors avoiding the masking effects of indoor reverberation. The single steed sided pulse requires essentially all frequencies for its reproduction. Again, if you do not get the essential sharp "crack" impact of the cannon with wall bending, pants flapping low frequency content as well, your amplifier is probably clipping. Also be careful that you are not listening in a standing wave null. :18

BASS SIDE DRUM & CYMBALS (FROM CARMINA BURANA)
4 repetitions of a heavy bass side drum and cymbal crashes with contrasting voice. The low bass provides a superb foundation for dramatic music. At the end of each repetition, cymbal crashes compete with bass drum beats, a good test for intermodulation effects and amplifier capacity.

LOW FENDER STRING BASS
Low notes changing pitch. Sounds like the rumble of a truck except with pitch change. On poor systems it deteriorates to almost an ill defined hum. 8 repeats. :24

MARCHING BAND WITH SIDE DRUM, CYMBALS AND SNARE DRUM
Fundamental is at a higher frequency than previous bass drums, but good bass transient response will give great dynamic impact. Cymbal crashes and snare should be brilliant and heavy. 4 repetitions. Also excellent for phasing low bass with mid-bass. Try reversing phase of sub-woofer to find maximum impact position. :45

Musical Source Material

PIPE ORGAN
Many passages have deep underlying bass notes near the lower frequency limit of hearing and threshold of feeling. Watch out for vibrating walls, windows and fixtures. If room walls are not very solid, the deep bass may be very strong outside the room. 1:18

FLAMENCO DANCERS
Exceptional bass transients which can be felt coming from the floor with a good sub-woofer. Hand claps should be sharp and alive. Dancers worked on a 3 foot high hollow wood stage. 2:03

WOODEN HARP
Intriguing fundamentals with natural instrument resonances over-layed with melodic transient high strings; listen for the subtle "buzzing" of the strings. 5:55

FLAMENCO DANCERS WITH CASTANETS AND VOICE
Good mixture of sharp castanets and voice to contrast with heavy bass. Highs should remain clear (on a good system) while floor shaking heel impacts occur. :48

STEAM LOCOMOTIVE
Unusually near and real. The bass effects as the heavy wheels roll by a few feet from the microphone are as much felt as heard and are an exceptional bass effect with a good sub-woofer. :42

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Editor's note: definitely a record of great consequences with truly no meaning. Just how I like them. If only I had a good sub-woofer. Hell, if only I had a sub-woofer! Speakers even! I connect this mofo right to the computer and let it do the work. My failures are your success.

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