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KAB Speedstrobe Turntable Speedchecker

  code:KABSPEEDSTROBE
£97.50 (FREE UK Delivery)
Item in Stock  |  Usually dispatched within 24 hours
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  • Budget strobe disc and lightsource

KAB Speedstroke includes LED lightsource

The KAB SpeedStrobe was designed to replace and improve upon older strobe designs that relied on power line frequency. We also wanted something that was easier to use and included the ability to actually measure small amounts of error. Not just a go - no - go - test.

The KAB SpeedStrobe features a quartz locked illuminator with 99.99% accuracy. And since it is battery operated, it works everywhere. No need for 50 or 60 Hz versions. The Disc is silk screen printed on durable 20 mil PVC.

Instead of hypnotic bars, the KAB SpeedStrobe features the actual speed numbers. In use, the desired speed is read directly from the disc. no searching for the right band. Covers 16.66, 33.33, 45, 70.59 - 90 RPM. By timing the drift of the display over one minute, accuracy can be measured to 0.03%

Strobes work on the principal of "freeze motion" illusion by using a precise flashing light. A disc with incremental markings, evenly spaced around a circle is illuminated while it is revolving. When the rate of the flashing light matches the passing of the markings beneath it, the motion of the disc will appear stationary. The mathematic formula that describes this condition is:
The Ratio of F ÷ RPM = N × (1 ÷ 60)
With Strobe Frequency and Platter RPM known, solving for N:
N = F ÷ RPM × 60
Where F = Strobe Light Repetition Rate or Frequency
RPM = RPM of Turntable
N = Number of incremental dots, lines or other icons, evenly spaced around the disc.

Example for 33.33 RPM 60 Hz: N = 60hz ÷ 33.33 = 1.800 × 60 = 108 markings.
Example for 33.33 RPM 50 Hz: N = 50hz ÷ 33.33 = 1.500 × 60 = 90 markings.

The two above examples apply to strict 60Hz illumination as with the KAB Speedstrobe illuminator.
Note that older strobe discs that used neon or overhead fluorescent light will have double those markings because gas lamps flash on every half cycle and thus produce flashes at twice the line frequency.

We endeavour to despatch same day (for orders placed up to 2pm) on available stock items to the vast majority of UK mainland addresses. Please remember to check with us first for a physical stock check if next day delivery is important to you.

UK ORDERS:  We despatch the bulk of our UK mainland items on a 24 hour service – Free of Charge.  Free delivery also applies to the Isle of Man, Isle of Wight, the Scilly Isles, the Scottish highlands and Islands, the Channel Islands and Northern Ireland but may take a day or so longer. Smaller items are delivered using Royal Mail recorded delivery or special delivery. Larger items are delivered using a courier service such as Interlink Express, DPD, UPS or DHL. 

INTERNATIONAL ORDERS: We offer competitive rates which can be confirmed by email. Please just ask – we will need a full delivery address and telephone number. Smaller items are delivered using Royal Mail Small Packets Airmail with International Tracked and/or Signed depending on value of item and availability of the service. Larger International shipments are sent by insured and tracked services using DPD, DHL or UPS. If there are any delays due to specific customs regulations, etc, you will be contacted by Turntableworld or by the courier with a request for any further information required. Customs duties do not apply for shipments into any EU country (for a full list please refer to the EU Country List). Customs duties can apply for countries outside of the EU. Customers in these countries are responsible for all taxes and duties incurred when the items enter their country.

COLLECT IN STORE OR HOME INSTALL:At the request of the manufacturer some items cannot be supplied by mail order but you can click and buy them and then elect to collect them from our store or arrange a home install (if applicable). Applicable items clearly state that they are Collect in store or home install. Once ordered you will receive a message prompting you to contact us by phone or email to arrange for us to deliver and install or to reserve and collect from our store at your convenience.

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