The readings I getting don’t make sense I am testin a Bogen SPT 15A I get a reading of 8 ohms at 10x divided by 4900 is 64 what am I doing wrong

That horn has a selector to choose wattages via 25v/70v, or if you have the spt-158a is 8 ohms. So do you have a 70voly system or 8 ohms

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TOA ZM-104A Impedance Meter, Measures Impedance of Speaker Lines Up to 100k Ohms, Zero Adjustment for Accuracy On All Ranges, Easy to Read Meter Calibrates Directly in Ohms

Product ID: 25900828

Details

Brand
TOA
Color
Black
Item Weight
700 Grams
Power Source
Battery
Style
Modern

📊Direct ohm calibration

📏Measures up to 100kΩ

⚙️Zero adjustment for precision

€ 604.87

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Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎯 Nail your audio setup with pinpoint impedance accuracy!

ALL IN ONE KIT - Comes complete with test leads, carrying case, and an impedance-to-power conversion chart—ready for any job.
BUILT FOR THE FIELD - Compact, lightweight design with long battery life keeps you powered through extended projects.
INSTANT READABILITY - Easy-to-read meter calibrated directly in ohms for quick, confident diagnostics.
PRECISION MEETS POWER - Zero adjustment ensures spot-on accuracy across all impedance ranges.
BROAD SPECTRUM MEASUREMENT - Effortlessly measures speaker line impedance up to a massive 100,000 ohms.

The TOA ZM-104A is a professional-grade impedance meter designed for precise measurement of speaker lines up to 100k ohms. Featuring zero adjustment for accuracy, a direct-reading ohm meter, and a comprehensive kit including test leads and a conversion chart, it’s engineered for audio pros and tech-savvy managers who demand reliable, on-the-go diagnostics.

Specifications

ASIN	B004KO1AS8
Best Sellers Rank	#189,052 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #86 in Sound & Noise Meters
Brand	TOA
Brand Name	TOA
Color	Black
Customer Reviews	3.9 out of 5 stars 18 Reviews
Item Dimensions	10 x 6 x 3 inches
Item Weight	700 Grams
Item dimensions L x W x H	10 x 6 x 3 inches
Lower Temperature Rating	23 Degrees Celsius
Manufacturer	TOA Electronics
Measurement Type	Ohmmeter
Minimum Operating Voltage	6 Volts
Model	ZM-104A
Part Number	ZM-104A
Power Source	Battery Powered
Specification Met	Cat I
Style	Modern
Style Name	Modern
Unit Count	1.0 Count
Upper Temperature Rating	104 Degrees Fahrenheit

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€ 604.87

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

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