Home > Discussions > Acoustic research ar 28b speakers sam

Acoustic research ar 28b speakers sam

Forums New posts Latest activity Search forums. Promoted Threads. Media New media Search media. Members Registered members Current visitors. Log in.


We are searching data for your request:

Schemes, reference books, datasheets:
Price lists, prices:
Discussions, articles, manuals:
Wait the end of the search in all databases.
Upon completion, a link will appear to access the found materials.
Content:
WATCH RELATED VIDEO: Should I Tell My Wife I Bought Acoustic Research AR 2ax Loudspeakers?

AES E-Library


For complaints, use another form. Study lib. Upload document Create flashcards. Flashcards Collections. Documents Last activity. Add to Add to collection s Add to saved. If you are reading this, you are probably considering repairing or restoring an old AR-3a pair. For some, this restoration process is an afternoon of effort and a few dollars in supplies—just to get some reasonable sounds going. For others, it is a consuming quest for perfect authenticity. Either way, it's a lot of fun and a good learning experience.

Only you can decide how much time and money you want to devote, and the job also depends on the physical and electrical condition of your speakers.

As a first step, take a look at the flow-chart included here to get an idea of the task at hand. Many of us are very passionate about the 3a and consider it a landmark product in the history of loudspeaker development. A properly restored pair can sonically rival the best modern speakers and will reward the investment of effort put into them.

However, even a basically repaired pair will be capable of providing much listening pleasure for years to come. Options 16 3. What is it? The AR-3a is a three-way acoustic suspension loudspeaker manufactured from — Weight: 53 lb. Average woofer free-air resonance: 18—21 Hz. Average resonance with cabinet stuffed: 42 Hz.

Crossover frequencies: Mid-range, Hz; Hi-range, Hz. Internal volume: 1. Independent mid-range and hi-range driver level controls. Each of us has their own reason to restore and enjoy the AR-3a. I loved them for many reasons. They were expensive and owning a pair was like owning a Corvette; it was a symbol of high class and good taste.

They were built like a tank and meant to last forever, which we have proven to be true 40 years later. The sound quality was superb and for the price, there was no other speaker that could come close. The signature solid deep bass made it one of a kind.

The uncolored mid-range and the ability to deliver music and vocals as close to the real thing made the AR-3a as one of my all time favorite speakers. They are small enough to stuff into an area where other speakers may have problems. The wide dispersion drivers set them free from sweet spot listening.

Regardless of their simple and primitive crossover and drivers, they still remain very accurate compared to other speakers that were designed with computer aided programs. Identifying and Checking Components Figure 2.

The late model used push-on connectors that mated with back mounted male tabs. The jumper wire is removed for use as a woofer only. The cabinet was acoustically sealed with gaskets under each of the three drivers. Air leaking around level control shafts and amplifier terminals provides a small amount of air permeation needed to prevent the cabinet from becoming too tightly sealed.

Here are some recommended items: Soldering iron; 30—50 W. Solder; 0. You may also check it by measuring a known, low-value resistor. Internal connections are usually soldered. Three solders are commonly available: i It is readily available, but has been phased out of electronics manufacturing to eliminate lead.

It is not needed here but works well. If you find soldering intimidating, wire nuts will work just fine. Eighteen-gauge Sn-plated Cu wire with colored insulation is available from big box stores or electronic supply houses, should one wish to retain the original AR wire colors when re-wiring. Eighteen-gauge is sufficiently large for AR-3a internal wiring. We suggest that you begin by following this path. Much—perhaps excessive—detail is provided throughout this note especially for those who love music but have never opened a speaker or experienced the joy of sitting through exciting sophomore circuit lectures.

Play it Louder! Hi-Range OK? Speaker analysis 2. Fortunately hot glue dries and becomes brittle with age; it usually pops free easily. Two options: the best uses a screw and pliers [R.

See Fig. Hold the screw with pliers and pop the grille corner free. The second method is not so easy; it uses a thin screwdriver to pry the grille free by levering against a flat surface such as a putty knife. Work the blade around the cabinet edge. There are typically 6 glue spots; one in each corner and one on each side. Store the grilles safely where your cat cannot find them until the project is completed.

Using a drywall screw to remove the grille. Gross damage is easily spotted. Small dents in the hi-range dome are OK, they will not affect the driver performance. Larger dents in the hi-range cone usually can be removed by applying suction with small-diameter soft plastic tube.

Small dents can be removed with a small needle, if necessary. The mid-range driver is fairly rugged, but small dents in its mesh covering are common.

Minor dents can be removed with a pair of small pliers or screwdriver. Major woofer damage deteriorated surrounds, torn cones requires immediate attention. The Alnico magnet woofers in early AR-3a speakers were made with cloth surrounds; later woofers used urethane foam surrounds.

The most common visible defect in the foam-surround woofer is deteriorated foam. If the foam or cone is damaged, the cabinet will not be airtight and severe damage will result when played loudly. Figure 2. Hopefully, these images will encourage you to repair your woofer before potentially inflicting added expensive damage. Right crushed from hitting the magnet when played too loudly with a damaged surround. This voice coil former has completely separated from the spider after being played too loudly with a damaged surround.

If you do not know where the spider sits inside the woofer, please examine the cutaway view of the AR-3a illustrated in Fig. If the cone moves freely, because it has a rotted or torn surround or a hole in the cone, proceed no further. Please repair the woofers! You may choose, at your own risk, to apply small signals and proceed farther along this path to determine if all the drivers speak and the potentiometers are scratchy; but you risk voice coil damage.

Music is preferred to a sine wave generator so that one will not apply excessive single frequency power to the hi- or mid-range. If surrounds looks OK, it could still be partly detached, or if early cloth surround, need to be re-coated. Check for cabinet sealing leaks by depressing the dust cover gently with three fingers around its periphery. The dust cover is the small dome in the center of the woofer.

This is not the only cause of air leaks! They can be caused by something as simple as a missing driver bolt, a loose potentiometer shaft screw, or missing gasket putty. Let it dry a day and recheck by depressing dust cover. The Permatex coating dissolves in the original and remains supple; however, it is not suitable for use on foam surrounds! If no audible signal is heard, either the voice coil is open, or there is a loose internal wire.

That can be sorted out when the cabinet is open. Vibration or buzzing usually indicates a loose or poorly aligned voice coil.

A lead wire touching the cone will occasionally cause rattling. Obvious damage must be fixed before playing loudly, as that would only increase the damage. Rotate the mid-range level control and listen for static or intermittent signal.

The mid-range driver is sturdy; however, it has been blown by playing at excessive volume. If no sound, it could be an open voice coil, a corroded mid-range potentiometer, or a loose wire. These can be sorted out when the cabinet is opened.


No se encontró nada

David, aka Grumpy, needs our help. Great news. David is home! It was quite the ordeal to get him home and into the house, but it is done. Thank you to everyone for their support. Now a long road ahead to get him back on his feet and functioning normally.

Listeners use perceived social characteristics of a speaker to guide the mapping of acoustic signals to lexical items (Niedzielski, ;.

Ayan Records


We want our tracks to play nice out in the real world. And this is why having some crappy speakers in your studio is so critical. That fat bass line and monster drum sound needs to come through to some degree on tiny little speakers, otherwise your mix loses impact. I get that. Sure you can make your mix sound good on those speakers, but what if someone listens to your mix on a set of better speakers or a high end stereo? Or what if your song gets on a local TV station or commercial and people hear it on their nice home theater systems in surround? Can you be sure that it will translate well there?

The socially weighted encoding of spoken words: a dual-route approach to speech perception

acoustic research ar 28b speakers sam

The iPod is a line of portable media players and multi-purpose mobile devices [2] designed and marketed by Apple Inc. As of May 28, , only the iPod Touch 7th generation remains in production. Like other digital music players, some versions of the iPod can serve as external data storage devices. Prior to macOS

For vocalising species, passive acoustic monitoring PAM is increasing in popularity; however, survey design rarely considers the factors influencing the timing and occurrence of vocalisations and in turn, how they may influence detectability of the species.

Restoring the AR-3a - The Classic Speaker Pages


For complaints, use another form. Study lib. Upload document Create flashcards. Flashcards Collections. Documents Last activity.

Making a list of "high value" speakers from past to present. Please assist.

Ayan Records is a new netlabel dedicated to non-profit creative music, sound research, experimental, abstract ambient, noise, live electronics, drones, soundscapes, minimalism, free forms, no-jazz, glitch, idm, improvised acoustics, lo-fi and more. Total Views 55, Older Stats. Internet Archive's 25th Anniversary Logo. Search icon An illustration of a magnifying glass. User icon An illustration of a person's head and chest.

Acoustic Research (AR): 5, 12, 14, 18s, 32, 38, 40, 90, 92, , , , , b, , , , B, 28B.

Acoustic Research AR9

Permissions : These pages may freely searched and displayed. Permission must be received for subsequent distribution in print or electronically. Please contact mpub-help umich. For more information, read Michigan Publishing's access and usage policy.

Do Studio Monitors Even Matter?


By samberger , February 28, in Acoustic Research. These are for sale not far from me. Seller doesn't know much about them, or if everything is original. From the back it looks like something was done to them. Have no idea what the blue wire is all about. They look to be in excellent shape, and looks like the drivers are original.

Lisa O.

This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register. By continuing to use this site, you are consenting to our use of cookies. Forums New posts Search forums. Articles New articles New comments Search articles. Classifieds New listings New comments Search listings. Log in Register. Search only containers.

Read times. Pages: [ 1 ] Go Down. Did you see this in Stereophile?




Comments: 0
Thanks! Your comment will appear after verification.
Add a comment

  1. There are no comments yet.