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| | ► » digital amps |
 | | These are switching amps, not digital amps and take an analog input. | | | Recently I've been reading various comments in threads about amps and other equipment to the effect that CES demo rooms are somehow set up in ways that consumers can't or shouldn't duplicate and yet company spoksmen disclose these factoids. | | | digital connection to a receiver with a digital input, for convenience's |
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http://www.itsonx.com/digital-amps-5854064.html
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| | Digital power amps used in music and audio |
| | Though some manufacturers refer to Class-D amps with digital inputs as “pure digital,” don't be bamboozled. | | | They are digital in the binary sense, but pulse width modulation (PWM) power amps are more in the delta sigma vein of DSD than the brute force approach taken by PCM. | | | When the supply rails reach their limits, Class-D amps tend to compress rather than clip, but the power supply's current capability is what shapes the amplifier's overload behavior to which it's attached. |
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http://mixonline.com/mag/audio_dj_classy
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| | Digital Audio: Amps, Preamps & Receivers |
| | In fact, specific features have been designed into iBiquity Digitals IBOC technology to improve the existing analog reception during the hybrid mode. As the market reaches maturity, broadcasters are expected to transition out of analog broadcasts and offer all-digital mode in much the same way that television stations did with black-and-white programming. | | | The dual approach is needed because, with digital broadcasting, theres no such thing as receiving a degraded digital signal. | | | IBOC technology lets broadcasters deliver simultaneous analog and digital versions of the same program on their assigned frequencies. |
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http://www.architechmag.com/Articles/detailArchitech.asp?ArticleID=2109
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| | digital amps... Is all the rave reviews real??? - AVS Forum |
| | You mention the match between speaker and amp interface is 'first order' in terms of the sound - what is the mechanism/parameter that is the issue (I agree in general amps/speakers have matching issues - is this generic or specific to these amps?) | | | Coming back to the subject, I think, digital amps are not exaggertating the attack, but I think the decay is not that good (in comparison with high-end audiophile analog amps). | | | Also its digital software will be able to correct for any technical issues due to mechanical driver interaction.. |
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http://www.avsforum.com/avs-vb/showthread.php?t=490140
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| | LDSG Appendix D |
| | Class AB Class AB amps are quite similar to Class B in that they use separate devices and sections for the positive and negative halves of the signal. | | | Many have noted that the difference between amps of similar specifications and measurements, operated within their designed power range, is often inaudible, regardless of the technology. | | | Where Class AB differs from Class B is that the output devices never turn off at the zero level. |
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http://www.snippets.org/LDSG/appdx-d.php3
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| | Privateline.com: Digital Wireless Basics: Channels |
| | The DVCC acts like a digital marker, similar to the supervisory audio tone in AMPS, keeping a mobile on frequency. | | | In a digital discussion, however, a channel is also a communications path within a data stream. | | | As shown above the fast associated channel is embedded within the digital traffic channel. |
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http://www.privateline.com/PCS/channels.html
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| | The Truth About Digital/Class D Amplifiers |
| | After all, the distortion phenomena that stand in the way between a perfectly formed digital control signal and a perfect analog replica are inherently analog. | | | all digital ones and many analog ones too) is responsible for the oft- quoted tube-like warmth and air. | | | One should ask the question: would any D/A converter designer in his right mind build a DAC using power components? |
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http://www.audioholics.com/techtips/audioprinciples/amplifiers/digital_classD_amplifiers.html
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| | HTGuide Forum - Newform & digital amps |
| | Any one interested in switching amps ought to go back and read some of the original papers by Brian Attwood, Gerald Stanley, and the papers by Karsten Nielsen. | | | This means I am not talking about any of the digital amps that throw in an additional A/D and D/A cycle after the traditional DAC (standalone DAC or DAC integral to a player). | | | This is a problem with the Digital EQ and crossovers, too, and why folks are often looking for post control with analog volume controls... |
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http://www.htguide.com/forum/showthread.php4?t=11016
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| | Digital Output - Amps? - MP3Car.com Forums |
| | The Audiobahn ADD51T converts the digital to analog. | | | I think you have to send the signal to some sort of processor/eq so the output level going into the amp gets increased from the low level of the computer. | | | I was gonna get the 7 channel digital amp from them until I called 30 places and they dont have it cause its discontinued. |
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http://www.mp3car.com/vbulletin/showthread.php?t=40958
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| | Eden Electronics Forum - Solid State VS. Digital Amps |
| | Politics aside, both analog & digital amps are by, definition, Solid State. | | | Digital preamp uses midi to change settings/parameters (bass/mid/effects, etc), and digital processing to mimic various kinds of amplifiers, these are the "modelling" amps. | | | Digital power amps could mean digital or switching power supply with a normal solid state output stage. |
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http://www.eden-electronics.com/forum/topic.asp?TOPIC_ID=1231
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| | Encyclopedia: AMPS |
| | Though analog is no longer considered advanced at all, the relatively seamless cellular switching technology AMPS introduced was what made the original mobile radiotelephone practical, and was considered quite advanced at the time. | | | AMPS and TDMA are now being phased out in favor of either CDMA and GSM which allows for more capacity and newer technologies such as WAP, Multimedia Messaging High-Speed Internet Access. | | | The AMPS band was taken from the same 806~890 MHz frequency band which was originally UHF TV channels 70~83. |
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http://www.nationmaster.com/encyclopedia/AMPS
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| | The Truth About Digital/Class D Amplifiers |
| | After all, the distortion phenomena that stand in the way between a perfectly formed digital control signal and a perfect analog replica are inherently analog. | | | Read a review about the Bel Canto Evo or the Sharp 1-bit (which is analog, btw) to see what I mean. | | | One should ask the question: would any D/A converter designer in his right mind build a DAC using power components? |
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http://www.audioholics.com/techtips/audioprinciples/amplifiers/digital_classD_amplifiers.html
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| | the Otherpower.com Discussion Board Jerry, about car audio amps? |
| | This may have some merrit and my monster amps might just do the job and I've thought about this befor. | | | The new class D amps have very high wattage and voltage output and some can be bridged. | | | The output would have to be sampled and adust the input acordingly. |
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http://www.fieldlines.com/story/2004/2/11/62819/4271
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| | Audio Talk! - So what's the skinny on digital amps? |
| | I have no idea why they are called "digital", but it just bugs me.... | | | I have no idea why they are called "digital", but it just bugs me.... | | | First, I know your calling them "digital" because thats the way they are |
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http://www.allaudio.org/detail-7116300.html
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| | Digital Good, AMPS Bad |
| | they'd gain in digital airtime doesn't merit the investment. | | | Today's digital phones just ain't designed for that environment. | | | [Lisa Minter note: A question for whoever: Why is 'digital' good but |
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http://www.monster-isp.com/forums/showthread.php?t=7766
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| | V8Buick.com - Crossfire Amps |
| | Class D is great for bigger sub amps only as the benefits do not outweigh the cost for a smaller amp. | | | A class D amp can be more than 80% efficient while a Class A/B (which most amps are) will fall into the 50-60% range. | | | If digital information is written in 1s and 0s, then what would a digital amp do? |
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http://www.v8buick.com/showthread.php?t=62255
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| | diyAudio Forums - DIY True Digital Amps |
| | Hi all, I have been looking at starting a new amplification project for some time and I finally have the time now. | | | As i understand it, Jam have a sparse logic gate based implementation that they licence. | | | Digital components trying to record or play sound have to equal several super computers to play a 16 bit sound. |
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http://www.diyaudio.com/forums/showthread.php?postid=34003
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| | D-AMPS - a Whatis.com definition - see also: Digital-Advanced Mobile Phone Service |
| | An advantage of D-AMPS is that it is easier to upgrade to from an existing analog AMPS network. | | | D-AMPS is one of three digital wireless technologies that use TDMA. | | | Although AMPS and D-AMPS originated for the North American cellular telephone market, they are now used worldwide with over 74 million subscribers, according to Ericsson, one of the major cellular phone manufacturers. |
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http://searchmobilecomputing.techtarget.com/sDefinition/0,,sid40_gci213876,00.html
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| | 6moons audio reviews: Acoustic Reality eAR Enigma Plus & eAR Pre Two |
| | Reference BNC-BNC digital cable; Ortho Spectrum AR-2000 filter/buffer on the DAC's analog outputs | | | For the direct A/B, I'd use two unbridged channels of the eVo 4 for equivalent 120wpc output. | | | Furthermore, the output filter adds significant output impedance and limits the amplifier bandwidth/transient response". |
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http://www.6moons.com/audioreviews/acousticreality/enigma.html
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| | SoundStage! Equipment Review - Bel Canto EVo 200.2 Amplifier (2/2001) |
| | The bass I heard was extremely intelligible and precise but without the artificial mega impact that some arc-welding super amps portray. | | | Preamps used with the amp were from Lamm, the L1 and L2, and other amps on hand were the mighty Lamm ML2 monoblocks, Audio Research ATM200 monoblocks, and the Mark Levinson No.383 integrated amp. | | | We arranged then for a review, which has taken a while to appear due to various scheduling concerns. |
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http://www.soundstage.com/revequip/belcanto_evo2002.htm
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| | EMI amps up digital music offerings CNET News.com |
| | "Digital delivery will eventually become part of our standard release pattern," Ken Berry, CEO of EMI, said in a statement. | | | CNET News.com's Charles Cooper says the tech industry should move beyond its take-it or leave-it approach to trade and human rights. | | | Digital downloading of music has become a grassroots phenomenon among many Net users. |
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http://news.com.com/2100-1023-240341.html?legacy=cnet
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| | EETimes.com - Class D amps turn down heat in portable audio systems |
| | The strongest selling point for Class D amps in portable applications is longer battery life, but a "filterless" Class D might change the equation. | | | Samson concurred that Class D amps have, until recently, required bulky, costly inductance/capacitance output filters to eliminate RF carrier noise and electromagnetic interference (EMI). | | | The MAX4295 is packaged in a 16-pin QSOP or a 16-pin small-outline (SO) package and the MAX4297 in a 24-pin SSOP or 24-pin SO packages. |
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http://www.eetimes.com/story/OEG20010220S0049
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| | Automotive DesignLine Digital amps claim advances |
| | But D2Audio's "closed-loop technology delivers performance that is not possible to achieve in open-loop implementations," he said. | | | We architect, design and verify digital, analog, mixed-signal and RF ASIC, SoC and FPGA solutions. | | | Founded in 2002, D2Audio has developed a line of digital amplifier ICs and modules, as well as supporting software. |
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http://www.automotivedesignline.com/products/infotainment/175803559
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| | (Cheap and good) digital amps - interesting read - Topic Ars OpenForum |
| | after reading trough page 4 of the above, thread, digital amps make more sense to me now. | | | So digital amps just do PWM on the output to the speaker? | | | I had my benn set on getting one of Onkyo's less expensive amps, but if manufacturers are starting to put out digital stuff with these kinds of results, I may just hold off for a while. |
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http://episteme.arstechnica.com/6/ubb.x?a=tpc&s=50009562&f=67909965&m=1380990195
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| | Car Audio Message Forum - CarStereo.com |
| | as far as the audiophile class d amps...i have learned something from you too. | | | As for the sound quality of the Class D amps that are out right now, I think 99.9% of the people don't care or can't hear the difference. | | | If I had to speculate I'd say class D amps are often associated w/blown speakers because generally they're very powerful, and cheaper for the power than class AB's. |
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http://www.carstereo.com/forum/showthread.cfm?tid=4953
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| | ElectronicsWeekly.com - Advantage digital amps |
| | If the input signal is digital, the first block is a format converter. | | | If the input signal is analogue, like this one from Zetex, the front end is a modulator of some sort. | | | advantage of digital, or class D, amplifiers is they are more efficient. |
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http://www.electronicsweekly.com/Article25748.htm
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| | Digital AMPS - Wikipedia, the free encyclopedia |
| | IS-54 and IS-136 are second-generation (2G) mobile phone systems, known as Digital AMPS (D-AMPS). | | | D-AMPS uses existing AMPS channels and allows for smooth transition between digital and analog systems in the same area. | | | Calls were encrypted, although the algorithm used (CMEA) was later found to be weak. |
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http://en.wikipedia.org/wiki/IS-136
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| | [DIY] Digital amps |
| | Well, semantics, if an amp puts out a digital signal, it's digital, analog out is analog. | | | Lukas As long as the output stage is switching between 1s and 0s, it is still digital, correct? | | | Tact's output stage is NO different in essence than any other Class D amp. |
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http://www.snippets.org/pipermail/diyspeakers.not/2004-September/026811.html
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| | Motorola phone directory |
| | MicroTAC series Ultra Lite Digital (AMPS 800) (Analog) | | | Micro Digital M-70 (TDMA 800 / AMPS 800) (Digital / AMPS) | | | Micro Digital M-75 (TDMA 800 / AMPS 800) (Digital / AMPS) |
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http://www.canyonriver.com/models_Motorola.html
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| | :: View topic - Digital Amps and synergistic speaker combos |
| | I have read just about all the threads around here that relate to digital amps, being a recent convert, and it is interesting to read about the experiences of others, when they try a digital amp in their system. | | | I fired up the Blaupunkt car amp again to compare it to the modified Sonic Impact amps, and I felt that the little SI amps actually sounded better with the Jordans than the much more powerful car amp. | | | I then got a Panasonic SA-45 receiver and used it to drive a multi-channel system based on three Fostex FX200's on open baffles. |
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http://www.audiocircle.com/circles/viewtopic.php?t=14283
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