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Summary of Contents for miniDSP PWR-ICE125
- Page 1 PWR-ICE125 PWR-ICE250 DSP- CONTROLLED PLATE AMPLIFIER User Manual mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce...
- Page 2 Date V1.0 Initial revision 28-06-2013 V1.1 Updated typo on wiring 24-07-2013 V2.0 Merged PWR-ICE125 and PWR-ICE250; completely revised 31 August 2016 V2.1 Added 48k (FIR) plugin, new Master Volume selection 18 November 2016 V2.2 Changed plugin name 25 November 2016 mi niDSP Ltd, Hong Kong / www.minidsp.com...
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Page 3: Table Of Contents
Important Information ............................5 System Requirements..........................5 Disclaimer/Warning ............................6 Warranty Terms ............................6 Safety Instructions ............................7 Product Overview ........................... 10 The miniDSP concept ........................11 Choosing a plugin........................... 11 Installation and Setup ..........................12 Installation ― Windows ......................... 13 2.1.1 Possible Windows installation issues..................13 2.1.2... - Page 4 Room EQ Wizard (REW) ......................43 Compressor ........................... 44 Additional Information..........................45 Key Specifications .......................... 45 6.1.1 General ..........................45 6.1.2 PWR-ICE125 ........................... 45 6.1.3 PWR-ICE250 ........................... 45 Mounting dimensions ........................46 6.2.1 PWR-ICE125 ........................... 46 6.2.2 PWR-ICE250 ........................... 48 6.2.3...
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Page 5: Important Information
MPORTANT NFORMATION Please read the following information before use. In case of any questions, please contact miniDSP via the support portal at minidsp.desk.com. YSTEM EQUIREMENTS To configure the PWR-ICE amplifiers, you will require a Windows PC or Apple Mac OS X computer with the... -
Page 6: Disclaimer/Warning
ISCLAIMER ARNING miniDSP cannot be held responsible for any damage that may result from the improper use of this product or incorrect configuration of its settings. As with any other product, we recommend that you carefully read this manual and other technical notes to ensure that you fully understand how to operate this product. The PWR-ICE amplifier is a powerful tool, and misuse or mis-configuration, such as incorrectly set gains or excessive boost, can produce signals that may damage your audio system. -
Page 7: Safety Instructions
4. The amplifier has been dropped or suffered damage in any other way, 5. The amplifier exhibits a distinct change from its normal function or performance. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... - Page 8 Disconnection from the mains power supply can only be achieved by removing the plug from the mains socket and by external disconnection of all poles from the mains. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce...
- Page 9 IMPORTANT: Always connect the Product to mains through the MAINS IN connector on the Amplifier Unit. DO NOT REMOVE MAINS CONNECTOR GROUND, IT IS ILLEGAL AND DANGEROUS. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce...
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Page 10: Product Overview
This version of the PWR-ICE amplifier uses the ICEpower® 125ASX2 power amplification module, together with miniDSP’s input and DSP hardware. Delivering up to 125 Watts per channel or a total of 450W in BTL mode, it is ideal for applications such as medium-powered two-way loudspeakers and subwoofers. -
Page 11: The Minidsp Concept
HE MINI CONCEPT The miniDSP concept is “one hardware unit + one software plugin = audio processing so lution.” This concept leverages the inherent flexibility of DSP (digital signal processing) to deliver a range of flexible but cost -effective solutions. -
Page 12: Installation And Setup
If you purchased your product directly from miniDSP, your software will be available from the User Downloads section of the miniDSP website when your order ships. To access the download, you will need to be logged into the website with the account you created when purchasing96k plugin. -
Page 13: Installation - Windows
2.1.1 Possible Windows installation issues The miniDSP software requires that a number of other frameworks be installed for it to work. For Windows 7 and later, these packages should be installed automatically. For earlier versions of Windows, please download and install the following frameworks before attempting to install any miniDSP software. You can also manually install these if you receive an error message that required software is missing. -
Page 14: Installation - Mac Os X
We recommend that you accept the default installation settings. To run the plugin, locate PWR_ICE2_2x2.app or PWR_ICE2_2x2_FIR.app in the Applications -> miniDSP folder and double-click on it. To make it easier to run in future, right-click on its dock icon and select Options ->... -
Page 15: Hardware Connectivity
To prevent electric shock, do not operate the product with any of the conductor portion of the speaker wire exposed. The PWR-ICE125 operates at hazardous voltage. For this reason, you should never operate the plate amplifier and touch the rear of the unit. -
Page 16: Main Panel
AIN PANEL Connections are made on the main panel, with the exception of the speaker outputs. (The PWR-ICE125 is shown here – the PWR-ICE250 is the same but longer.) mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 17: Ac Power
-check before powering on the amplifier. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 18: Analog Audio Input
Y-splitter adapter or cable. Check the specifications for your preamplifier to ensure that the minimum specified load impedance is less than 10 kΩ/(number of connected PWR-ICE125 amplifiers). Connect only RCA or balanced (XLR) inputs. Do not connect both at the same time. -
Page 19: Digital Audio Input And Link/Passthrough (Aes/Ebu)
If the amplifier is set to analog input, there is no signal on the Digital Out. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 20: Ethernet
IP addresses (that is, it must not be set to a static IP address). You may also need to disable other network interface on the computer (for example, Wi-Fi). mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 21: Speaker Connections
Either channel can have the analog output signal reduced by 16 dB by opening a jumper on the rear of the DSP board. This is used in situations such as a two-way loudspeaker with a sensitive tweeter. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 22: Configuring The Pwr-Ice Amplifiers
Selects the master volume control mode, and mutes all audio from the amplifier. Main control window Contains all of the audio processing and control screens. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 23: Connecting To A Pwr-Ice Amplifier
Factory Default option. This will ensure that all configuration presets are set to a proper initial state. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 24: Mismatched Plugins
The amplifier should then re-appear under “Ethernet Device.” Always check and if necessary reload your configurations after performing an “Upgrade & Synchronize” operation. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 25: Renaming An Amplifier
You can then click on each to complete configuration. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 26: Configuration Preset Selection
Master volume control is disabled. ADC Mode The knob on the amplifier panel controls master volume. Remote Mode The miniDSP Android app controls master volume. 4.6 I NPUT TYPE SELECTION The PWR-ICE amplifier accepts either analog or digital input. Use the dropdown selector to choose the appropriate type. -
Page 27: Channel Mode
The input channel strips at the left of the plugin user interface change depending on the selected channel mode: mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 28: Amplifier Mode
The physical connections to the speaker output terminals must be consistent with the selected amplifier mode. See page 21. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 29: Mode Combinations
The whole amplifier drives a single subwoofer driver with the sum of the left and right input channels. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 30: Input Channel Configuration
Each input channel has a parametric EQ block with 12 parametric filters. See the section Parametric EQ for full details. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 31: Output Channel Configuration
IIR crossover block, while the FIR plugin has an FIR filter block. Signal processing functions for full details on these processing blocks. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 32: Mute
(Time delay in ms) = (Distance in cm) / 34.4 (Time delay in ms) = (Distance in inches) / 13.54 mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 33: Working With Configurations
When the plugin detects an inconsistency between the local state and the amplifier state, it brings up this dialog: mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 34: Saving And Loading Configurations
If the plugin is offline, the configuration data will be loaded into the user interface only. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 35: Restoring To Defaults
PEQ, Xover, or Comp, the Space bar opens the relevant control screen. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 36: Signal Processing Functions
A high-shelf filter with 6 dB cut (gain set to a negative value), centered at 10 kHz mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... - Page 37 This button selects a file exported from Room EQ Wizard’s automatic equalization function. For more information, see the section Custom biquad programming and the app note Auto-EQ tuning with REW. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce...
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Page 38: Crossover (96K Plugin Only)
Sets the nominal cutoff frequency of the crossover. In actual fact, of course, the crossover has a more or less gradual transition from “full on” to “full off,” as determined by the filter slope. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 39: Fir Filtering And Design (Fir Plugin Only)
The parameters of each FIR filter are set in the FIR settings window: mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 40: Fir Filtering Overview
5.3.2 FIR filter design software The filter coefficients must be created with the aid of filter design software. miniDSP does not provide any such software, instead referring you to the many software packages available for this purpose (both freeware and commercial). -
Page 41: Filter File Format
If you clear the filter taps, make sure that you also bypass the filter, otherwise there will be no audio through that channel. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 42: Custom Biquad Programming
Note that when using a filter design program, the sample rate must be specified at the correct rate for the plugin – 48 kHz for the PWR-ICE2-2x2-FIR plugin, and 96 kHz for the PWR-ICE2-2x2 plugin. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 43: Biquad Calculation Spreadsheet
Linkwitz transforms, and filters with arbitrary Q-factor. Access this spreadsheet here (requires Microsoft Excel): http://www.minidsp.com/images/fbfiles/files/All_digital_coefs_v1-20101026.zip In the spreadsheet, each page has an Fs parameter. Be sure to set this to the correct sample rate for the plugin you are using – either 48 kHz or 96 kHz. -
Page 44: Compressor
For guidance on using this feature, please refer to the app note Auto EQ with REW. For the Equalizer setting, choose “MiniDSP” for the FIR plugin, and “MiniDSP-96k” for the 96k plugin. 5.5 C OMPRESSOR The compressor reduces the gain of an output channel when the audio signal reaches a certain level as specified by the Threshold parameter. -
Page 45: Additional Information
Protection features Overcurrent and thermal overload protection Supply voltage 85 to 132 VAC (switch set to “115V”) 170 to 264 VAC (switch set to “230V”) 6.1.2 PWR-ICE125 Power output, SE/2-ch 120 W/channel (230V/50Hz AC) mode, R = 4Ω 105 W/channel (115V/50Hz AC) -
Page 46: Mounting Dimensions
6.2 M OUNTING DIMENSIONS 6.2.1 PWR-ICE125 Figure 1. PWR-ICE125 plate dimensions and mounting hole locations mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... - Page 47 Figure 2. PWR-ICE125 recommended cutout dimensions (red outline) mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce...
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Page 48: Pwr-Ice250
6.2.2 PWR-ICE250 Figure 3. PWR-ICE250 plate dimensions and mounting hole locations mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... - Page 49 Figure 4. PWR-ICE250 recommended cutout dimensions (red outline) mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce...
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Page 50: Additional Mounting Considerations
(For example, if a subwoofer has a sufficiently large port, ensure that it is not possible to insert a hand and touch the high voltage parts.) See page 15 for locations of high-voltage parts. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 51: Mcu Firmware Upgrade
To update the MCU firmware, first download and install the latest version of the PWR-ICE2-2x2 or PWR-ICE2- 2x2-FIR plugin from the User Downloads section of the miniDSP website. Unzip the download file and navigate to the firmware folder. There you will see the firmware update file: 6.3.1 Put the amp into bootloader mode... -
Page 52: Mac
Power off the amplifier, wait a few seconds, and then power it on again. You can now proceed to use it as normal. mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 53: Troubleshooting
Check the output mute status for each channel mi niDSP Ltd, Hong Kong / www.minidsp.com / Features and speci fi cations subject to change wi thout pri or noti ce... -
Page 54: Obtaining Support
6.5 O BTAINING UPPORT 1. Check the forums on miniDSP.com to see if this issue has already been raised and a solution or solutions provided. 2. Contact miniDSP via the support portal at minidsp.desk.com with: a. The specific product you are having an issue with (in this case, PWR-ICE amplifier).
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