So every effort has to be done to isolate the record player from its surroundings as well as to isolate the record from the record player. This results in a big loss of detail and clarity and makes the sound "muddy". The problems is that there is a very slight time difference between the reproduced sound and the sound that is fed back onto the record player. The cause is the sound that has just been produced by the speakers which comes back to the record player and cause it to vibrate. Acoustic feedback is one of the big problems when playing records. Notes: During the past 20 years the quality of record players and vinyl records have improved dramatically. These mats are a very cost effective way to improve the sound and have less noise by static and dust. Which is better largely depends on taste and the actual platter design. Resonances are damped more effectively than felt, they keep dust away and also avoid static. Leather and Cork are 2 different but very interesting options to upgrade the sound quality. Thick rubber mats overdamp the record and have an isolation effect which leaves static on the record - hearable noise clicks are the result. Also, the damping ability is very limited which can be a problem with metal platters. This means that felt mats often collect a lot of dust which can be then transferred to the record. Notes: Sound tuning through platter mat replacement! The interaction between the record and the surface can be tracked very easily by the sensitivity of a good pick up cartridge.Ĭommon felt mats give a smooth contact between record and platter but have the disadvantage of static. Keep all cleaning products out of the reach of children. Note: Hard surface cleaning fluids like G2 and SC1 can be irritating to skin and eyes. SC1 Stylus Fluid dissolves these contaminants and the SC1 Brush removes them. The stylus can become clogged with oily pressing release compound from new records and residue from other record cleaning and preservative fluids. It's a cousin of our G2 Fluid with a bit more organic alcohol. This brush can be used dry or with a couple of drops of SC1 Fluid. Those are the effective cleaning features of our new stylus brush. Dense bristles to pull off gunky coatings but soft to avoid damage to the stylus or cantilever. Long bristles so the brush can clean the underside of the cartridge as well as the stylus. We sourced and tested dozens of brush styles, handle types and bristles. Your stylus will "plow" out any debris that isn't removed from a record cleaning. Notes: Even if you use your GrooveWasher to clean your records, room dust, lint and cat hair can accumulate on your stylus. Side B includes two Japanese Jazz standards as well as other recordings to test your settings. Frequency response (1:53) High range frequency response (15kHz, 10kHz, 9kHz, 8kHz, 7kHz, 6kHz, 5kHz, 4kHz, 3kHz, 2kHz, 1kHz). You can also use it to check for turntable rumble or hum.Ĩ. Non-recording groove (0:45) This is a non-recording groove for checking the noise-to-signal level ratio of the entire device. Since it varies continuously from 20Hz to 1kHz, it can be said that there are few standing waves if the volume is uniform.ħ. Standing Waves (1:43) Check out the standing waves in the listening room. When there is a lot of unevenness, it sounds unstable.Ħ. A turntable with little "rotational unevenness" allows you to hear sound at a constant pitch. Irregular rotation (2:23) To check the "irregular rotation" of the turntable, run a 3kHz sound for 120 seconds. Check how much it leaks into the left channel.ĥ. Then run it for 15 seconds on the light channel as well. The less sound leaks, the better the crosstalk. Check how much this sound leaks into the light channel. A 440 Hz A sound (radio time signal sound) is initially played on the left channel for 15 seconds. Crosstalk (1:10) Check left/right crosstalk on playback equipment. It is used for checking the output voltage and S/N ratio.Ĥ. This sound is said to be the reference level of the playback equipment. 1kHz (0:35) This is the reference tone of 1kHz. When the phase is normal, the white noise sound is heard from the centre, and when the phase is reversed, it is heard separately outside the speaker.ģ. Phase response (1:32) Checks the phase for correct polarity in stereo equipment. Since the click sound is recorded on the left and right sides with the same volume, please adjust the level knob of the playback device so that the click sound can be heard from the centre when listening from the front. Left/right balance (1:35) First, check the left/right balance. Notes: An analogue LP containing numerous reference sound sources for correcting and adjusting turntables, DJ mixers, and sound systems!ġ.
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