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Jensen Transformers SC-2NR Stereo Speaker to Line Audio Converter
with Built-In ISO-MAX® Ground Isolators
Jensen Transformers SC-2NR ISO-MAX Stereo Speaker to Line Audio Converter
Jensen Transformers SC-2NR Stereo Speaker to Line Audio Converter is a unique product that provides an elegant way to convert speaker-level audio to line-level audio.
Handy DIP switches make it easy to select input power ranges from 25 watts to 750 watts, making the SC-2NR compatible with a wide range of audio amplifiers.
The SC-2NR is an ideal solution for deriving sub-woofer inputs in pure stereo audio systems that do not normally provide subwoofer outputs. Channel-summing (mono output) models are available as well (by special order only), opening a whole new range of possibilities.
The configuration offered here has terminal strip inputs and high-quality Neutrik RCA outputs. This audiophile-grade Stereo Speaker to Line Converter is a completely passive device, so there is no chance of raising the noise floor of your audio system as might be the case with an active device.
The SC-2NR is housed in a sturdy metal enclosure, measuring 7.0" W x 3.5" D x 1.6" H., including the flanges. The flanges have mounting holes, which are handy for permanent installations.
At this point we typically like to remind customers not to confuse the SC-2NR with similar (but inferior) products from other manufacturers, but in this case, we know of no similar products, so even more than usual, the SC-2NR really is in a class of its own.
With inferior products coming from all over the world, we think it is a genuine treasure to find a company like Jensen Transformers, actually designing and manufacturing some of the finest products in the world, right here in the USA, and we are proud to be able to offer their products. The SC-2NR is made in the USA, is backed by the manufacturer's comprehensive one-year warranty, and has a remarkable 20-year warranty on the transformer device itself.
Please check out our Jensen Transformers Application Guide for information on the other members of the ISO-MAX family.
Jensen Transformers' Description
ISO-MAX® Model SC-2NR
Stereo Speaker to Line Converter
Features
- Flat response from 5 Hz to 20 kHz and low phase distortion for improved transients and imaging
- Transformer-isolated design eliminates issues with "Bridged" and "Class D" power amp outputs
- DIP-switch selected ranges for power amps rated at 25 W, 75 W, 250 W, or 750 W into 8 Ω
- Input ranges include 25 V and 70 V line applications
- Entirely passive - requires no power supply
- Consumer (RCA) output model SC-2NR features screw-strip input connections.
Model SC-2NR is a two channel "speaker" level to unbalanced "consumer" level converter and ground isolator, designed to accept, in four switch-selectable ranges, speaker drive voltages of 14 Vrms, 25 Vrms, 44 Vrms, or 77 Vrms. These voltages will be developed at full output of power amplifiers rated at 24 W, 75 W, 240 W, or 750 W respectively into 8 Ω loads or rated at 48 W, 150 W, 480 W, or 1,500 W respectively into 4 Ω loads. Input ranges also include 25 V and 70 V lines used in commercial sound systems covering large areas.
Since the speaker inputs are ungrounded, they are especially useful with power amplifiers where both outputs are actively driven and cannot be grounded (these are often referred to as "bridge-mode" or "floating" outputs). The speaker inputs represent a trivial additional load for the driving power amplifiers - maximum input power is 0.08 W, 0.4 W, 1.5 W, and 5.4 W respectively in the four input ranges. In addition, all models provide inherent low-pass filtering to remove ultra-sonic switching artifacts from the outputs of "digital" or "class D" power amplifiers. These artifacts can cause subtle distortions in downstream amplifiers [Deane Jensen and Gary Sokolich, "Spectral Contamination Measurement," AES 85th Convention Preprint 2725,1988}.
The standard versions have dual, or "stereo," outputs that correspond independently to each of the speaker input signals. The SC-2NR output signals will reach 1.75 Vrms (+5 dBV) at maximum rated input - sufficient to drive any known power amplifier with an unbalanced input to full output power. This level represents 15 dB of "headroom" in consumer audio systems where the nominal or "reference level" signal is standardized at - 10 dBV or 0.316 Vrms.
These ISO-MAX units are entirely passive and require no power supply.
Here is another angle on the front of the SC-2NR.
The speaker-level input terminals are shown in this photo.
Here is closer look at the SC-2NR front panel, showing the high-quality Neutrik RCA output connectors in greater detail.
This is a closer look at the back panel.
The Jensen Transformers SC-2NR comes packed in a foam-lined box, as shown here.
This is the User Guide, in PDF format.
Why Cable Solutions?
- Cable Solutions is an Authorized Jensen Transformers Distributor, so our customers are ensured full warranty protection and technical support. (Jensen Transformers is obligated to provide neither warranty nor technical support for products purchased from unauthorized resellers!)
- We stock this item locally so that it will be ready for immediate shipment, and no one works harder than we do to get your order shipped out to you fast! On business days, orders that are funded by noon will ship the same day. Orders funded on weekends or holidays will ship the next business day.
- Customer service is our first priority. We do our best to help you find the best solutions for your particular application. We're enthusiasts too, so we know what it's like to wait for cables and accessories that are needed to hook up new gear. We also know how important it is to be able to get a response when you need help, so you'll often find us working long hours in an effort to get you the answers that you need.
- If you have had enough of outsourced support or worse yet, companies that do not even publish a phone number or a functional email address, we think you will be absolutely delighted that you found our company. We know how important it is to be able to get help when you need it. That's why we have people, right here in Texas, ready to respond to your email or answer your phone call. If English is your language of choice, you will have the simple pleasure of communicating with people whose first language is English. Granted, if you call on the phone, you may detect more than a trace of a Texas accent, but that is to be expected when dealing with a family-owned business run by native Texans. We sincerely hope that you will find our heritage of courtesy, honesty, and an ethical way of doing business to be a refreshing experience.
Design excellence, high quality materials, meticulous workmanship, and superior service...put it all together and you get a superior product. Don't get stuck with bad advice, poor service, slow shipment or an inferior product. If you want the best, here it is.
Shipping/Handling
Please check the "Shipping and payments" tab to see which of the shipping options below we are offering for this item, including pricing and estimated ETA. Please notice that eBay's estimates are not entirely reliable. If you need a better estimate, please do not hesitate to contact us.
We are offering free shipping via USPS Priority Mail, an air service that provides one to three day delivery to US addresses!
USA Shipping Service Descriptions
USPS Priority Mail
Air service that provides 1 to 3 day delivery to US addresses. It includes basic tracking information as well as Delivery Confirmation. Saturday delivery is included at no additional charge.
USPS Priority Mail Express
Premium air service that provides overnight delivery to most (but not all) US addresses. Better tracking and faster delivery than Priority Mail. Saturday delivery is included at no additional charge.
USPS First Class Mail
Economy service for items weighing less than 13 ounces and valued at less than $200. This service is typically a day slower than priority mail and since scanning is optional, the tracking is of limited value.
Please refer to the Shipping and payments tab to see the actual services, rates, and transit times available for this item.
International Shipping Service Descriptions
Priority Mail Express International (EMS)
Our preferred international shipping method for all international shipments because it offers the best tracking as well as the fastest and most dependable delivery.
Priority Mail International
Available for items under $300 in value. Cost is somewhat lower, although delivery gets less priority than PMEI.
First Class Mail International
Economy service for items weighing less than 4 pounds and valued at under $100. This is the least expensive international shipping option, but the savings comes at the expense of tracking - scanning is not mandatory, so this service does not provide reliable tracking information, and the post office will not trace delayed or lost packages.
eBay GSP (Global Shipping Program)
This is a premium expedited shipping service where your total cost, including import duties and taxes, are known and paid during checkout. eBay assumes full responsibility for the safe delivery of your shipment.
If you would prefer shipping via mail, and to take responsibility for your own import duties and fees, we sometimes offer similar listings that offer that option (Search for the same item without "GSP" in the title). If you can't find what you need, please don't hesitate to contact us.
Please refer to the Shipping and payments tab to see the actual services, rates, and transit times available for this item.
Keep in mind that eBay's transit time estimates are from the US Postal Service. The total transit time to your address can be affected by circumstances in your own country, such as delays at your local customs office, or cases where no one is available to receive the delivery.
With the exception of eBay GSP, International customers should be prepared to pay import taxes and/or duties at the time of delivery. In NAFTA member countries, customs duties should be discounted for products that are made in the USA, but taxes may still be collected. Please be advised that we declare actual contents, value and country of origin for customs and insurance purposes.
No exceptions please.
Warranty
Manufacturer's Warranty Statement
For a period of 1 YEAR after purchase, Jensen Transformers, Inc. will, free of charge, repair or replace any part of an ISOMAX® product that fails due to defective materials or workmanship.
For a period of 20 YEARS after purchase, Jensen Transformers, Inc. will, free of charge, repair or replace any Jensen OEM transformer or any Jensen transformer contained in an ISOMAX® product that fails due to defective materials or workmanship.
Both limited warranties are subject to the following limitations:
1. Defects that are, in the sole judgment of Jensen, the result of accident, misuse, abuse, neglect, mishandling, misapplication, faulty installation, unauthorized repair, modification, or acts of God will not be covered by this warranty.
2. In the absence of proof of date of purchase, the date of manufacture (as determined from lot numbers of internal parts and the records of Jensen Transformers, Inc.) shall be used in its place.
3. There are no express warranties except as listed above.
4. JENSEN TRANSFORMERS, INC. SHALL NOT BE LIABLE FOR INCIDENTAL OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THIS PRODUCT OR ARISING OUT OF THE BREACH OF THIS WARRANTY. Duration of implied warranties, if any, is limited to 12 months.
If a problem develops with this product during the warranty period, call or write us before attempting any repair. We can help you identify specific problems, and possibly solve the problem, before the unit is returned to us for repair or replacement. In any case, DO NOT RETURN THE UNIT WITHOUT AUTHORIZATION and instructions from us. Jensen cannot be responsible for damage due to shipping or improper packaging.
Warranty Assistance
USA Customers
Jensen Transformers typically does a very fine job of handling warranty issues, but if you prefer to deal with Cable Solutions, we will be pleased to handle the matter for you.
International Customers
Please notice that most of our electronic equipment carries a USA warranty, so all international warranty issues must be handled by Cable Solutions. This means that you must return the item to Cable Solutions for all warranty repair or replacement issues. You will be responsible for all shipping/handling expenses.
All Customers
Return Merchandise Authorization (RMA) is required for all returns handled by Cable Solutions. Please contact us for authorization and instructions.
Return Policy
eBay-Managed Returns
Unless otherwise noted, all returns are governed by the terms of the eBay-managed return process, as described in eBay's portion of this item page.
The following information applies only to items that are not governed by the eBay-managed return process:
Defective Merchandise
Defective merchandise will be repaired or replaced as described above.
Non-defective Merchandise
All non-defective returns are subject to restocking fees. Here are some examples of the fees:
Un-opened merchandise
All un-opened returns are subject to a 10% (minimum) restocking fee.
Opened merchandise
B-Stock or "open box" electronic devices - 15% (minimum)
New electronic devices - 20% (minimum)
Manufactured cables that are packaged in a reusable container - 15% (minimum)
Manufactured cables that are packaged in a non-reusable container - 20% (minimum)
Shipping/handling fees are not refundable and you will be responsible for all shipping/handling expenses related to the return. In the case of items with "free shipping", customary shipping/handling fees will be added to your restocking fees.
In order to qualify for the rates shown above, we must receive your return within the first 14 days following the day you receive your order. In cases where the item is returned incomplete, or in less than perfect condition, we will evaluate the restocking fees on a case by case basis.
Return Merchandise Authorization (RMA) is required for all returns. Please contact us for authorization and instructions.
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