Tascam US-224 owner manual Illustration 3.03 Enabling DMA on your IDE drives

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Certain devices, such as network cards and WinModems, can cause conflicts with the native handling of USB. Should you experience such conflicts, the offending device can usually be temporarily disabled in the Device Manager. Refer to your Windows manual for detailed instructions on how to resolve conflicts.

Assuming your computer has an IDE hard disk (most do), enabling Direct Memory Addressing (DMA) on will improve performance. Some programs (such as Cubase VST) allow you to configure the DMA as enabled on install. If you’ve not already done this, here’s how to configure the DMA transfer mode: On the Windows desktop, go to the Start menu, Settings, Control Panel, System. In the System Properties window, select the Device Manager tab. Click on the plus sign next to Disk Drives, and highlight the IDE disk listing, then click on the Properties button. Check the DMA box under options. (see illustration 3.03)

Illustration 3.03 - Enabling DMA on your IDE drives

In addition, a number of simple hardware modifications and enhancements can substantially improve your computer’s handling of audio, as well as your track count and DSP capability:

Increase the amount of RAM in your system. While most digital audio software will function with a minimum of 32 MB, increasing your computer’s RAM to 96, 128 or even 256 MB will markedly improve performance.

Consider the addition of a dedicated hard disk for audio; preferably one with a high spindle rate (over 7200 RPM is recommended for most audio applications). Using different drives for program and audio data speeds up the seek time for the audio track data. (Note that simply partitioning a large drive will not have the same effect, as the computer will still be accessing the same physical drive.) For best results, add a SCSI or Wide-SCSI drive and SCSI controller card. SCSI (and particularly Wide and UW-SCSI protocol) are capable of considerably higher data transfer speeds; you’ll notice a dramatic increase in track count and in the amount of signal processing plug-ins your computer can handle. Note that some of the recent UDMA-66 drives have proven to be almost as fast (and certainly cheaper); however, they are still limited in the amount of physical drives allowed and the bus length.

If you’re presently using a PCI-based graphics card, and your motherboard has an AGP slot, consider getting an AGP-based graphics card. This will decrease traffic on the PCI bus and allow for faster screen redraws.

Special Note: For even more detail on optimizing your PC for audio, please refer to the PDF document PC_Optimization.pdf included on the US-224 CD-ROM. This document is also available on the TASCAM website.

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Contents US-224 For U.S.A Important Safety PrecautionsSafety Instructions Tascam Declaration of ConformityTable of Contents What’s in the package FeaturesIntroduction OverviewFront Panel Controls and IndicatorsPower LED Input Monitor Switch and LED Bank Switches and LEDsRear Panel Power switch Digital In and OutFront Panel Descriptions MIC Input a and B Power switchRear Panel Descriptions Phones jackSystem Requirements InstallationInstallation US224Win98Install110.exeTo install under Win98SE or ME To install using Windows New Hardware Wizard To install under Win2K or Windows XPTuning Your PC Setting Up OMS MacOS OnlyIllustration 3.03 Enabling DMA on your IDE drives Page Hooking up audio Hooking up Audio and Midi to the US-224Hooking up Midi Using the Input MonitoringMaster Fader Monitor vs. Master LevelMain US-224 Control PanelBuffer Size Adjustment Chromatic TunerAbout Buffer Sizing Illustration 5.03 The Chromatic Tuner Selecting the US-224 as your Audio Device Interfacing with your Audio SoftwareInput Enabling Setting the Sample Rate and Bit DepthTransport Controls and Locate Points ASIO2 Direct Monitoring Mute/SoloData Wheel Bank Controls and Fader NullPage Sample Recording Session in Cubasis Setting UpOverdubbing Recording Your TracksMixdown Other Applications and US-428 Emulation Mode MacOS Setting up Sound Manager Support for use withPage Audio Drivers TroubleshootingTechnical Support Tech Support Contacts’ve connected audio to the US-224, but can’t hear anything Troubleshooting FAQsBefore Contacting Us Don’t see the US-224 in Cubasis’ Audio Control PanelAppendix a Midi Implementation Chart Function Transmitted Recognized RemarksOYes Functional Groups Appendix B Control ProtocolPurpose IntroductionTransportrec Transport/Locate command setPer-channel Control command set Continuous data wheel Bank-Switching Command SetUpdateasnled F0 4EUNIT 12 0FSTATE F7 Appendix C US-224 Technical Specifications AD/DA Converter Connector 5P DINInput impedance 75 ohm Input Level 0.5Vp-p Output Impedance 75 ohm Output Level 0.5Vp-pUS-224
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US-224 specifications

The Tascam US-224 is a compact and versatile audio interface designed to meet the needs of musicians, podcasters, and home recording enthusiasts. Launched as part of Tascam's innovative range of products, the US-224 is recognized for its ease of use, portability, and impressive sound quality, making it an ideal choice for those looking to record in various environments.

One of the standout features of the US-224 is its capability to connect directly to a computer via USB, allowing users to harness the power of digital audio workstations (DAWs). This seamless connectivity ensures low-latency performance, enabling users to record and monitor audio in real-time without distracting delays. The interface is compatible with both Mac and Windows operating systems, which broadens its appeal to a wide user base.

The US-224 is equipped with two high-quality microphone preamps, providing sufficient headroom for capturing a wide range of audio sources. These preamps are known for their clear, detailed sound reproduction, making them suitable for various applications, from vocal recordings to instrument captures. Additionally, the interface features phantom power for condenser microphones, ensuring flexibility in microphone choice.

Users will appreciate the integrated mixer on the US-224, which allows for easy control of audio levels and monitoring. The interface includes insert points and line inputs, offering further options for routing signals, whether for instruments or external processing equipment. The built-in MIDI input and output ports also enhance the interface’s versatility, allowing users to connect MIDI controllers and other devices for comprehensive music production.

The compact design of the US-224 makes it highly portable, a significant advantage for mobile recording setups. This lightweight interface can easily fit into a laptop bag, enabling users to capture high-quality audio anywhere. Furthermore, the durable construction of the unit ensures it can withstand the rigors of travel.

In summary, the Tascam US-224 stands out as a reliable audio interface packed with essential features for recording enthusiasts. Its excellent sound quality, robust connectivity options, and user-friendly interface make it a valuable tool for anyone looking to create professional-level recordings effortlessly. Whether in a studio or on the go, the Tascam US-224 provides an unyielding performance that meets the demands of modern audio production.
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