CBS TECHNICAL SERIES PROFESSIONAL TEST RECORD LP WIDE RANGE PICKUP AUDIOPHILE

CBS Laboratories

Technical Series Professional Test Record

• Vinyl GradeVG+
• Cover GradeVG+
• Format1 LP
• LabelCBS
• Catalog NumberSTR 120
• Matrix NumberCLD 443-4

"CBS Laboratories Technical Series Professional Test Records are unique, high-precision tools designed to assist audio and quality control engineers and test and service technicians in the rapid evaluation of audio components, equipment and systems.

Each record has a complete series of tests, which eliminates the need for equipment, saves hours of time, and makes it a productive tool in the laboratory, on the production line, and in field testing.

The STR 120 makes possible the measurement of pickup response at frequencies far beyond the audible range, where elusive distortion elements can cause audible distortion. The low-frequency range includes glide-tones at twice normal level for the detection and elimination of arm resonance, loudspeaker cone and cabinet rattles.

Other tests include: silent grooves for measuring rumble and surface noise characteristics; and standard level bands at 0dB for overall system S/N measurements. This record is suitable for use with a graphic level recorder to provide permanent, visible records for precise evaluation."

Side A (same tracks in three groups)

1. Left Sweep Frequency, 500 - 50,000 Hz, constant velocity, -8 dB re 3.54 cm persec rms.
2. Right Sweep Frequency, 500 - 50,000 Hz, constant velocity, -8 dB re 3.54 cm per sec rms.
3. Lateral Sweep Frequency, 500 - 50,000 Hz, constant velocity, -8 dB re 5 cm per sec rms.
4. Vertical Sweep Frequency, 500 - 50,000 Hz, constant velocity, -8 dB re 5 cm per sec rms. Side B
   
5. Quiet Groove
6. 1000 Hz Reference Tone, Left Channel, 8.0 µm peak amplitude (3.54 cm per sec rms velocity)
7. 1000 Hz Reference Tone, Right Channel, 8.0 µm peak amplitude (3.54 cm per sec rms velocity)
8. Left Sweep Frequency, 10 - 500 Hz, constant amplitude +12 dB re 8.0 µm peak amplitude.
9. Right Sweep Frequency, 10 - 500 Hz, constant ampitude +12 dB re 8.0 µm peak amplitude.
10. Lateral Sweep Frequency, 10 - 500 Hz, constant amplitude +12 dB re 11.2 µm peak amplitude.
11. Vertical Sweep Frequency, 10 - 500 Hz, constant amplitude +12 dB re 11.2 µm peak amplitude.
12. Quiet Groove

• All domestic packages are tracked. Ask us if you would like the tracking number.
• We'll combine shipping costs on multiple wins (or store purchases) to save money for the buyer.
• The automatically generated invoice provided by eBay for multiple items doesn't understand combined shipping (it just adds the individual costs together), but we'll issue a proper invoice with the reduced shipping within 16 hours.
• We are professionals and pack with extreme care: you can trust us. However, we know some customers may have specific requirements for how their items are to be packed. Please confirm any such packing requests with us before bidding to be sure we can accomodate you. Different packing materials have different weights, so if for example you want a box for an item we might normally ship in a bubble mailer, the shipping cost will probably change.

• Massachusetts residents must pay sales tax because we are a Massachusetts business.
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• Winners, please contact us within four days. If we do not receive payment from you within two weeks, we reserve the right to cancel the transaction and report you as a non-paying bidder.

• Due to the mail theft epidemic in the Italian post office system, we no longer normally ship to addresses in Italy. Exceptions can be made for buyers willing to pay for Priority Mail, which is safer but much more expensive than First Class. Priority Mail can also be tracked. Please contact us if you are interested and we will provide a shipping quote.

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