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In general, the answer to that question is yes. But the degree depends on several factors.
When comparing an EQ901 to a mint condition OEM equalizer, the differences can be subtle. If the original Bose OEM Equalizer is in less than excellent shape with aging capacitors, sliders and connectors, then the new EQ901s are vastly superior.
The EQ901 series is based on the high-performance analog device's digital signal processor, so the noise and distortion are lower and the dynamic range is greater, leading to better audio performance.
In testing, our goal was to have the EQ901 series equalizers be as close as possible to the factory EQ response, with additional enhancements in dynamic and frequency range for lower noise and distortion.
All models in the EQ901 series are compared here: EQ901 Series Selection Guide.
While it is possible to connect an active subwoofer with any of the EQ901 series equalizers, there are specific models that are designed with active crossovers to optimize the audio performance of your 901s with a subwoofer. To see a comparison of our different models and their features, check out our EQ901 Series Selection Guide.
For more on this topic, check out our Tech Blogs and Videos.
The purpose of the active crossover filter is to properly integrate the subwoofer with high frequency speakers, resulting in the following positive effects:
Contact Deer Creek Audio, we are here to help!
Email us at staff@deercreekaudio.com. Please include screenshots of the issues with your email.
Call us at 720.726.9272.
When the EQ901B Plus arrives, it will include the EQ901B Plus unit along with a regulated power supply. The equalization curves for the Bose 901 series you selected will be preset on the EQ901B Plus unit.
If the programming within your EQ901 has been deleted or damaged, you can purchase a firmware update through our EQ901 Series Upgrade Program. Just select “Firmware Upgrade for any EQ901” from the dropdown menu. Once you place your upgrade order, we will send an email confirmation with additional instructions.
Yes, we have options for upgrading your current EQ901. The services below are available with our Upgrade Program. You can simply select the appropriate option from the dropdown menu. Once you place your upgrade order, we will send an email confirmation with additional instructions.
The EQ901 is specifically designed for Bose 901 speakers, and although it is possible to use it with another set of speakers, it is not recommended as it would cause excessive bass and treble.
EQ901 Bs are shipped with a 0.9 Vrms input maximum rating. This can be overdriven by tape monitor loops that are putting out more than 1 Vrms and also fixed line outputs from other components that exceed this level, such as a CD player.
One solution is to put the EQ901 B in the signal chain where you have control over the output voltage, for example a pre-out / main-in loop. If that option is not available, you can switch the unit from 0.9 Vrms to the 2 Vrms input setting. This solution works well most of the time.
If you are still having this issue, you can return your unit to Deer Creek Audio for evaluation, with these possible outcomes:
Check out the SHD / Flex Startup guide in our Resources Library. Also be sure to read the miniDSP user guides.
When you purchase an SHD series product, it includes full, perpetual licenses for Dirac Live, the miniDSP Device Console, the ASIO USB driver and Volumio. Each time you download software you’ll receive the latest version. You also can upgrade at any time, from multiple computers, using the supplied licenses.
The license for Dirac Live is hard coded into the SHD product, and the software is downloaded directly from the Dirac website. All other downloads are available through miniDSP. You will need to open free accounts with miniDSP and Dirac Live to access your downloads.
It’s recommended that when you perform an update on an individual piece of software you also update all software for the unit.
Yes, all of our SHD products are the most recent versions released by miniDSP. We import new fresh stock monthly directly from miniDSP, so all our products contain the latest firmware and software updates.
Try these tips when updating your SHD:
Use this method if Volumio has become corrupted and you are unable to access the Volumio web interface.
Tips
If you had renamed your system in the Volumio settings, you will need to access the web interface using the default name.
The factory_reset file is removed from the USB stick during this process. If you want to do the reset again, you will need to copy the file to the USB stick again.
Yes, the miniDSP SHD series is certified Roon Ready. Roon’s high-resolution streaming technology is built into the SHD network player, and combines simple setup, daily reliability and the highest levels of digital audio performance.
All SHD models shipping now have full Roon Ready capabilities. For existing SHD owners, you’ll need to delete any old Roon connections to your unit, then update to the latest SHD and Volumio firmware. You’ll then have full Roon Ready interface.
All the miniDSP products are extremely quiet, however, it is possible with improper gain structure to have a high noise floor. Here's an application note that addresses this: https://www.minidsp.com/applications/dsp-basics/gain-structure-101
Here are the public, published signal-to-noise ratios:
Contact Deer Creek Audio, the miniDSP Dev Team or the forum on the miniDSP website. We are here to help!
Please include screenshots of the issues with your email.
The UMIK-1 is calibrated at the factory; you simply download the calibration file from the miniDSP website using the seven-digit serial number found on the body of the microphone. The UMIK-2 includes a license code for the required PC driver download.
Some of the advantages of purchasing your miniDSP product from Deer Creek Audio include:
All of the Nilai 500 assembled amplifiers and DIY amplifier kits shipped by Deer Creek Audio are set to the middle gain setting. This is appropriate for 95% of preamplifiers.
When you start using the system, you can judge if you need more or less gain by how much volume control you need to use on the preamp. For instance, if it’s very touchy and you barely need to turn up the volume, then you should reduce the amplifier gain. Conversely, if you have to turn the volume knob way up then you probably need to increase the amplifier gain.
Instructions for changing the gain setting are in the documentation included with your amplifier.
Using the tools provided, first loosen the four outer screws on the rear panel and the four screws attaching the feet to the bottom panel. Only loosen the screws by a couple of turns, until they aren’t tight. Next remove the two tiny allen screws that are underneath the front panel and flip it upwards. This allows you to remove and then reinsert the top sliding cover. When done, be sure to retighten every screw after reassembly.
Deer Creek Audio only offers true Hypex engineered and approved designs. Our assembled amplifiers use only the latest Hypex OEM components or those of Hypex approved OEM suppliers. All Hypex designs have thousands of hours of consumer use in configurations that are fully recognized and supported by Hypex, so you will enjoy guaranteed performance and long-lasting support.
We offer same business day shipping for orders received by 2 PM mountain time. U.S. domestic orders for small items ship expedited (1 to 3 days), large items ship ground service (FedEx, UPS or USPS). Overnight shipping for small items is available for U.S. mainland orders. Carriers to Canada and international destinations may vary. See product listings for item-specific shipping costs.
For U.S. domestic purchases, state sales tax is only assessed for Colorado customers. All customers outside of the United States will be responsible for any import duties and other taxes assessed by the government of the importing country. These fees are not included in our shipping charges.
The best value for our products is often via the eBay International Shipping program. Simply add the item to your cart and you will see the full delivered price to your address including all taxes, duties and shipping.
eBay International Shipping items are first shipped from our local facility to an eBay International Shipping center. Then eBay International Shipping takes care of the rest, including completing customs forms, paying import fees and providing international shipping to you. The program also includes end-to-end international tracking, so you can stay up-to-date throughout the process. You can go to eBay and view the tracking process to your final destination.
eBay assumes responsibility once the item reaches the eBay International Shipping center. If the item is lost or damaged during international transit, the program has you covered. For shipping or delivery questions on your eBay International Shipping order, please contact eBay directly.
This indicates that your item is being shipped via the eBay International Shipping program to your registered address at eBay.
If you have questions or comments, you can reach us at the following:
Email: staff@deercreekaudio.com
Telephone: 720.726.9272
Website: deercreekaudio.com