Crown D-75 April 2015:about $100 used if you know How to Win at eBay. Find answers in product info, Q&As, reviews. Distortion measurements could not be made over the full range of power outputs with 2-ohm loads because of the operation of the protective system at higher power levels, but the distortion was in the range of 0.003 to 0.005 per cent up to at least 10 watts output. Boswell , Apr 13, 2012

I already own 4 of the crown XTI 1000's, running my monitors, and they have been reliable amplifiers for two years now. This ad-free website's biggest source of support is when you use those or any of these links to approved sources when you get anything, regardless of the country in which you live. Frequency response driving an 8Ω resistor (green trace) and driving a real B&W CDM2 bookshelf loudspeaker (yellow trace), whose impedance varies between 6 and 45 Ω, a typical loudspeaker load. The speakers don't mute when you plug in headphones. Crown CE2000 Amplifier. Crown's IOC (Input-Output Comparator) LEDs are brilliant.

1986: $--, corrected for inflation ($524 list price at the time). Be careful, it's easy to blow out low-impedance headphones if you do something stupid. Since professional monitor speakers all have dedicated internal power amplifiers today (thus the name "active" monitors), these gems have flooded the used market and you can get them for $100 or less if you know How to Win at eBay. I ordered two of these to power my EAW LA325's bi-amped. If you haven't helped yet, please do, and consider helping me with a gift of $5.00.

Dedicate this amplifier to headphone use if you want to. This amplifier is 38 years old, and works swell. Always use insulated plugs, never metal ones that can be accidentally shorted. It's best to avoid the newer D-75A, even if it looks cooler in black.

Crown made over 100,000 of these over the period of a few decades, and they are a professional, not consumer product, that sold for the equivalent of about $1,000 when new.

The D-75 has professional balanced XLR inputs, as well as a true unbalanced input for home Hi-Fi use. April 2015       Crown reviews    audio reviews    all reviews. According to Crown, this circuit produces a muffled snapping sound when it operates, but it will not be activated if the load impedance is 4 ohms or higher. They make testing this amplifier fast! These four simple LEDs do a fantastic job of letting you know what's going on at a glance. have had to take, feel free to help me continue helping everyone. Back in the early 90's they developed a high end audiophile amplifier - Class A, 250 watts per channel, huge power supplies, slick cosmetics, the whole works. Top subscription boxes – right to your door, © 1996-2020, Amazon.com, Inc. or its affiliates. And talk about power, I turned the the knob to level 2 and had to quickly turn down my mixer. For much less money you can get a NAD amplifier. There are diagrams in the manual. Prime members enjoy FREE Delivery and exclusive access to music, movies, TV shows, original audio series, and Kindle books. We don't know when or if this item will be back in stock. This is a professional rack-mount amplifier. The Power Line 3 has circuits that constantly compare the input and output waveforms, and any difference between them causes the corresponding channel's IOC light to flash. The Crown Power Line 3 is a rather expensive amplifier, and buyers of products in its price range are usually looking for special qualities beyond mere low-distortion amplification. Crown's products in general stand apart from the mass of consumer audio components by virtue of their design features, ruggedness, and distinctive appearance. Crown's XTi family of amplifiers defines the standard for portable PA systems with unmatched performance, technology and power-to-the-people affordability that delivers the goods night after night without even breaking a sweat. What's in the Box Crown XTi 2000, User's Manual.

You also have greatly improved control capabilities. The 1,000-Hz output clipped at 104 watts per channel into 8 ohms, 169 watts into 4 ohms, and 53 watts into 2 ohms.

The loudest thing you'll hear can be some acoustical transformer buzz, depending on how and where you have the amplifier mounted.

Crystal-Clear Sound Get accurate, uncolored sound with very low distortion, for the best in music and voice reproduction. When they don't lie on top of each other, it's due to channel imbalance. This is a very sensitive type of clipping indicator whose warning signal precedes any audible distortion. They catch any instantaneous distortion, and light bright red long enough for you to see it. 2A rear-panel fuse and 2.5A internal fuse. You can use all the power this amplifier has, regardless of load, and not have to play it softer to stay safe.

1991: $900, corrected for inflation ($524 list price at the time). The D-75A is a cost-reduced version that came out sometime in the 2000s. (20.44x). 1984: $---, corrected for inflation ($499 list price at the time). 710 mV RMS for 52.5 W continuous output at IOC at 0.01 % THD, unbalanced inputs. Intro   Specifications   Measurements  Usage   Recommendations. Decent power. The computer interface portion of the Crown XTI's is really neat and useful. It's great people like you who allow me to keep adding to this site full-time.

In other words, you can leave a balanced input connected, and the D-75 switches between them if you insert a mono ¼" plug. It is one of the most classic pro amplifiers of all time, being used in just about every radio station, recording studio and remote truck for use with nearfield monitors or other small speakers. You'd see this anyplace small speakers needed to be driven, as well as to power the speakers in the station's lobby. If you insert a mono ¼" plug into the ¼" jack, a contact in the jack bypasses the balanced input operational amplifier and feeds this unbalanced input directly to the volume control potentiometers. In our listening tests, repeated A/B comparisons between the Power Line 3 and two other, more powerful amplifiers failed to reveal any audible differences, which did not surprise us in view of the three units' almost identical measured performance (except for output power). It was complicated to use at first but this is my 2nd week of owning it, Getting the hange of it's controls now. Whatever goes in is what comes out, and if there is any sort of distortion or other problem, the IOC lights to warn you before it becomes audible. If you want accurate sound cheap, get one of these. Thanks for your support! You wont be sorry. And with the many speakers whose actual impedance falls to 4 or 5 ohms at some frequencies, the Power Line 3 begins to show some of its true mettle. If you wish to make a printout for personal use, you are granted one-time permission only if you PayPal me $5.00 per printout or part thereof. The Crown D-75 is a compact and extremely high quality professional power amplifier. enlarge. Following its preconditioning period, the exterior of the Crown Power Line 3's chassis (and especially its heat-sink fins) was very hot to the touch, although no part of it became more than faintly warm to the touch after hours of normal listening operation. They are located just a few miles from me in Elkhart, Indiana. Rackmount power amplifier. Unlike the variable-mode (or variable-class) circuits used in some other amplifiers, which affect only the output stage, the Multi-Mode circuits control the operating conditions of the three highest-level amplification stages (pre-driver, driver, and output).

SIGNAL starts lighting at about 50 mW (630 mV) output, and blinks and gets brighter with level above that. The Power Line 3 was stable with reactive simulated speaker loads and with a standard IHF reactive load.

The clipping headroom was approximately 0.63 dB for 8 ohms and 0.82 dB for 4 ohms. The Crown Power Line 3 is 19 inches wide, 10-l/8 inches deep, and 5-1/4 inches high (the handles extend 2-3/8 inches in front of the panel). This shopping feature will continue to load items when the Enter key is pressed. Crown is serious about common-mode rejection; there is an internal trim for a technician to null it out for perfection. Crown XLi800 Two-channel, 300-Watt at 4Ω Power Amplifier, Rockville 5000 Watt Peak / 1400w RMS 2 Channel Power Amplifier Pro/DJ Amp (RPA12), Crown XTi1002 Two-channel, 500-Watt at 4Ω Power Amplifier, Crown XLS2502 Two-channel, 775-Watt at 4Ω Power Amplifier. Crown is a good make, but to be able to give other sensible recommendations, we would need to know the details of your monitors (power handling, impedance etc), and the sort of studio setup you have. Using it at home in a home audio setup.

The D-75A also has a Mono mode, but you have to open the case to switch it. 818 mV RMS for 35 W (16.733 V) output at 0.001% THD, unbalanced inputs. 1.040 V RMS for 10 cycles of 1 kHz at 1 Hz PRF for 56.5 W burst power at IOC, unbalanced inputs. On the other hand, we were unable to figure out any really useful purpose for the Frequency Analyzing Display other than to provide a mild form of visual entertainment. Fans are super quiet. 1985: $1,150, corrected for inflation ($524 list price at the time).

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