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Car Audio LF-HPVM Smart Wireless Graphing Voltmeter with 2-Point Monitoring
This listing includes:
(1) LF Audio High Precision Voltmeter (2-Point Monitoring)
Meet the HPVM (High Precision Voltmeter) - the most precise, fastest sampling, smart wireless graphing voltmeter designed for both automotive and car audio enthusiasts.
Voltage, whether you're using it to create a spark to create combustion, inverting it to drive an electric motor, or pushing it into your amplifier to move a speaker cone to create sound, is critical in your car. Low voltage creates heat, stresses components, limits output, can affect sound quality, and even leave you stranded (if you don't have enough of it). Make sure your voltage is always on point with the best tool for the job!
The HPVM is a high-precision wireless graphing voltmeter with 99.99% accuracy / up to 3 decimal places of precision (e.g., 15.234v), and can monitor up to 2 individual voltage points! See the voltage sag between your alternator, front battery, lithium bank, and/or your amp to ensure your electrical resistance is dialed in and on point!
It is physically overbuilt with a solid aluminum case, high-density/temperature internal supports, and gold-plated ENIG PCB to survive the loudest and most violent builds.
Onboard AuralSync™ technology lets you connect the voltmeter to your smartphone, our AuralSync Companion Smartwatch, and other LF Audio AuralSync™ enabled devices.
The devices features 10 different customizable gauge faces, customizable voltage ranges, optional min/max voltage hold, and even a deep sleep mode!
In deep sleep mode, the device enters, w hen the meter detects that your car has gone to sleep (voltage is slowly dropping, no transients, etc...) it will enter a very low power mode.
During normal operation, the meter consumes roughly 460mW of power. During deep sleep mode, the meter only consumes 167mW of power.
This means that on a normal 100ah 12v agm battery, the unit would drain the battery in 7059 hours, or 294 days.
Once the unit detects a spike in voltage, it will return to normal full-speed operation. The unit will display how much battery drain occurred while it was in low power mode and will also show a bright red warning if the voltage drop was substantial indicating an unhealthy battery or abnormal vampire load.
For instructions on connecting your HPVM, updating firmware, using the app, and more, please see our getting started page.
Features:
Supply Voltage: 4v-18v
Individual Voltage Monitoring Points: 2
Voltage Measurement Range: 1v-18v
Accuracy: 99.99% accurate (+/- 0.002v)
Precision: 1mV - 3 decimal places (e.g., 15.234v)
Sample Rate:
330 samples per second per channel
660 maximum SPS in dual channel
Display:
1.3" diagonal TFT HD IPS LCD
240x240 pixels
65k color
Visual Refresh Rate: 33 FPS
Size:
40mm x 73mm x 26mm
1.6" x 2.87" x 1"
Weight: 2.3oz
Power Consumption:
~460mW full power mode
~167mW in deep sleep mode
Settings:
Use LF Audio AuralSync(TM) smartphone app or AuralSync Companion smartwatch to change settings on the unit.
Over The Air (OTA) Firmware Updates:
Use LF Audio AuralSync(TM) smartphone app to check for and apply firmware updates.
Payment Information
We accept PayPal for all ebay orders. You can use your credit through PayPal as all major credit card are accepted by PayPal.
We accept PayPal for all international orders, your address must be verified with PayPal.
We are not responsible for any custom duties or brokerage fees that may apply for all international orders.
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If you want to ship your item to an alternate address please add that address on your PayPal account and use the address as the default or confirmed address to pay us through PayPal
With Free Same Business Day Shipping we work to get you your order Fast.
All orders over $500 will require a signature for delivery.
All pre-selected shipping rates and methods are for customers with a valid residential or commercial address within the Contiguous 48 United States (PO Boxes address may require additional charges).
P.O. Boxes, APO/FPO addresses, Alaska, Hawaii, Puerto Rico, Guam, U.S. Virgin Islands, Northern Mariana Islands, American Samoa, Canada, and other countries may require additional shipping fees. Please contact a member of our team for detailed shipping charges.
Shipping is available only to PayPal verified addresses. When making payment please confirm your address has been verified with PayPal. Once payment is made shipping address can not be changed/altered. Payments made using an unverified PayPal address will be refunded and order will be canceled.
We will not accept request to change shipping address once payment has been made. Please confirm your shipping address is up-to-date and valid.
Typical handling time for orders is 1-business day. We do our best to ship every package with-in 1 business day of receiving a cleared payment. In some circumstances additional time may be need, in which case we will contact buyer.
Shipped orders that are returned by the shipping company due to an insufficient address or an undeliverable address will be refunded less a 20% restocking fee.
If package is refused or marked undeliverable and returned back to us by the carrier, you will need to pay the shipping cost in full to have the package sent back to you or we can refund the money minus the cost of shipping
MISSING A PACKAGE?
If you have not received your package, but the tracking information shows that it was delivered, please do the following within 36 hours of expected, stated delivery:
Verify the shipping address on the order is the address where you are looking for the package
Look for a notice of attempted delivery
Look around the delivery location for the package, or see if a neighbor has accepted the delivery
Be sure to double check your mailbox and other usual spots for package delivery
If you think that your package has been stolen, we will require a police report since this is now theft. Once we have a police report on file for the stolen package, we will reship your order.
This battery is light in weight and powerful. I have never heard my system sound so powerful. My voltage doesn't drop below 14.4V. My mids and highs are super clear and my bass.....OMG. Bass hits harder and deeper. None of the lights in or outside my car dim.
Man this thing hits hard for a single 10 and it’s compact enough to put in my car and it’s like it’s not even there I have it paired with a kicker cx 400.1 and it gives it everything it needs
Been using the sa12s for the past 7 years and have been a huge fan of them. Super loud and can take a real beating. Sound quality is nice and feels solid
Haven’t had subs in years. Thought I’d pick up a lil something to mess around with. For under three bills this is a nice setup for the novice. Amp is quite powerful and pushes these subs quite well. Bigger amp is in the mail looking forward to Father’s Day. Now I’m hooked and I wanna go pro. Thanks a lot Jeff created yet another bass head.
Could not find a way to update or edit my original review so adding to it this way. Since last review I have upgraded amplifiers to the deaf bonce aak 4000.1D (purchased here) and upgraded my alternator to the mechman 320a alt (also purchased here) and have upgraded my wire from 4 awg ofc to 0 awg ofc with 4/0 welding cable being my primary run to the back. This subwoofer handles this amplifier amazingly well. I am not sure what I'm getting out of the amplifier but I've done all I can to get the most out of it and tuned using an oscilloscope. Still this 4,000 watt amplifier is not enough for this subwoofer. Most definitely it is hitting VERY hard but no where near being maxed out. Now I'm curious to see how much clean power this subwoofer can handle. Attatching pictures of how it is set up now. Again THANKS BIG JEFF!!