This review page is supported in part by the sponsor whose ad is displayed above Owner: Metronome CD2V signature, Ack! James Burgess 45 Speakers: And the object of his collection is vintage audio gear. Gerry runs ads in the local papers’ “vintage audio equipment wanted”, he checks out the Penny Saver, the classifieds, garage, estate and yard sales and of course the grand electronic marketplace that knows no geography – eBay. And like any good hunter, Gerry has a few stories about bagging that rare beast in the wild. Near extinct species in generic speaker cabinets, stuffed into closets. A sole power cord dangling tail-like, the only hint of something precious promising perhaps the elusive field coil lurking within. The thrill of the hunt.
The following description applies to most cassette and open reel tape transports including those used in portable and microcassette recorders, Walkmen, and telephone answering machines. Looking at the top of the deck such that the tape heads are at the bottom: Supply reel table – left hand side platform on which the supply tape reel sits. Edge which contacts idler tire if used should be cleaned.
A loudspeaker (or loud-speaker or speaker) is an electroacoustic transducer; which converts an electrical audio signal into a corresponding sound. The most widely used type of speaker in the s is the dynamic speaker, invented in by Edward W. Kellogg and Chester W. dynamic speaker operates on the same basic principle as a dynamic microphone, but in reverse, to produce sound.
Guitar Player December Letters to the editor; Guitaring; Questions; It’s New. VG condition, mailing label on back. VG condition, mail label back cover.. A Pro replies; Rusty Young: Steel symposium; Chuck Rainey: More sonic shapes; Bob Baxter: Constructing chords; Jerry Hahn: Rhythm changes; Jimmy Stewart: Transcribing from LP’s; Happy Traum: Steel symposium; Jerry Hahn: Progressive blues; Bob Baxter: Head, Gears, Strings; Howard Roberts:
The source-date code on a pot is a 6 or 7 digit code impressed into the casing of the potentiometer. For speakers this code can be 5, 6, 7 or 8 digits long, and it’s ink-stamped or paint-stamped on the “bell housing” of the speaker. In either case, the code works the same. The first 3 digits on a pot, or the first 2, 3 or 4 digits on a speaker are the source or manufacturer code.
The remaining 3 or 4 digits are the date code. In 3 digit dates code, the 1st digit is the last digit of the year.
Fender Tube amp codes: – (look for a 2 letter code stamped on the tube chart inside the back of the amp)- the first letter is the year, and the second letter is the amp stamped NA would have been made in Jan. of Here is a list of the first letter showing the year of manufacture.
Above, the Presto Model A, their top-of-the-line system circa There is a detailed history of the Presto Corp provided at this website, so no need to re-tread those waters. Basically, what Presto offered was a way to make good-sounding LP and 78 recordings that could be played back instantly on any home turntable. Unlike earlier commercial recording technologies, there was no intermediate submaster required.
Presto was able to do this by having designed an aluminum later, glass disc that was coated with a special cellulose-based compound featuring 51 ingredients! At right, the Presto A Electronics package. This was a complete system of microphone preamps, cutting amps, patchbay, and AM radio tuner that was designed to accompany the Model-A pictured above. On a more basic user-level: Nowadays almost all audio control happens electronically; once the room is treated and the microphone carefully placed, our work as recording engineers leaves the realm of physical manipulation and enters a world of electronic control.
Above, the Presto A microphone pre-amplifier, the one piece of equipment in this lengthy catalog that could still be of potential use to modern recordists. Thank-you to reader EL for sending us the schem to the Presto A. This must be a slightly later version of the A, as the 2nd tube is a 6SJ7, which is a variant of the 6J7 that has the input grid connection in the base rather than on the top.
Other things to note: Thinking that this circuit could be nice as the back end to a 3-stage pre, maybe with a something low-gain like a 76 or 6J5 on the front end with a volume pot following.
Used in multi-driver speaker systems , the crossover is an assembly of filters that separate the input signal into different frequency ranges i. Hence the drivers receive power only at their operating frequency the sound frequency range they were designed for , thereby reducing distortion in the drivers and interference between them.
The ideal characteristics of a crossover may include perfect out-of-band attenuation at the output of each filter, no amplitude variation “ripple” within each passband, no phase delay between overlapping frequency bands, to name just a few. Crossovers can be passive or active.
General Feedback: Just received my first McIntosh component an MHA It is beautiful listed as B1 looks perfect to me. Thanks for an excellent buying experience. A.J. MN Hey I wanted to take a moment to thank everyone involved for this great deck.
This information original was found on The Unofficial Ampeg Page http: I pulled this information from Google’s cache of the site. It has a note at the top of the page that they were reprinting with permission from the authors of Ampeg: If anyone feels this page should be taken down, please feel free to contact me. Ampegs can be divided into six distinct groups for dating purposes: Each group uses a unique serialization scheme that can be used to assist in dating the amps, but in many cases, it is the features and characteristics of the amps that determine the year of manufacture.
Vintage Guitars Info
Per manufacturing regulations, the makers of electronics must include a minimum amount of production date information on their products. Depending on when the speakers were made this information may simply include a year and week or may be more specific, down to the day or hour. Disconnect the speakers from the power supply and connections before proceeding. If the speakers are in a vehicle, disconnect the negative terminal of the car battery before removing any speakers.
gretsch ‘s hardshell case original! “no reserve” item number: sold. gretsch ‘s hardshell case original! “no reserve”.
Both woofers were sourced to be the correct AlNiCo magnet versions, with the ‘damping ring’ as the original pair had too many issues we repeatedly found with our AF Gen Sweep processes. The original surrounds on AR-3a woofers were typically ‘distorted’, so we sent these to our local, ‘been in business 40 years’ speaker shop for fresh surrounds. The ‘spiders’ were also slightly ‘deformed’ we didn’t notice this as it is a rare condition on most speakers, was hard to see, but would show up at 3 different frequencies on an AF generator sweep, but most noticeable centered at 80Hz , so he ‘painstakingly’ replaced them, while retaining the original VC’s and Cones retaining the original Voice Coils and Cones made the process logarithmically more difficult.
We have completely tested all drivers. All drivers were removed and tested individually. Attenuators removed and ‘burnished’ for ‘intermittent-free’ performance. Felt feet were installed to the bottom plates. Cosmetically, the grills were cleaned, and the original ‘hot glue attachment’ replaced with Velcro.
Please don’t ask if we know any other speakers than mentioned on this page. When you know the best, you’re not interested in the rest. No, we don’t know if your Speakers match your Amp, but we can tell you how to tell if they are below. The more amps we try on our Tannoy Golds, the wider our opinion can be. The fact is there really is no way to tell beyond actually trying the Amp with the Speaker. We’ve not got bigger speakers of the post design, if we use some small ones to test, they hardly give a full picture of the sound if do prove compatibility to our amps with modern speakers.
Altec Lansing Octiv Mini M The Altec Lansing Octiv Mini is an ideal option for anyone seeking an affordable, minimalist iPhone speaker for the bedroom, bathroom, or kitchen.
Return to the Main Index. Sometimes there just isn’t enough information on electric instruments and amps to allow them to be properely dated. And many people ask me to try and determine the year of their old amplifier, or to help them with the year of their older off-brand electric guitar. Since I primarily collect amps by Fender, and guitars by Gibson, Fender, Martin, National, Epiphone, Gretsch and Rickenbacker, I really can’t help them with these other less popular brands.
As you have probably noticed, there is plenty of information here to help date the brands that I am interested in. But where does that leave everyone else? Well I’m not one to leave you out in the informational cold, so here’s something that I use quite often in dating amplifiers and electric guitars. It’s called the “source-date code”, and it can help determine the approximate age of an electric instrument by the date its components were manufactured.
Source-Date Codes On American made vintage gear, the pots and speakers provide an excellent opportunity to date a piece of equipment by referencing their “source-date code”. The source-date code found on pots and speakers gives the manufacturer and date roughly when the components were made. It may have been some time before the part was installed at the factory, but it still provides a good approximation of when the gear was made.
The source-date code will signify the earliest possible date that the instrument or amp could have been made.
Camping Norcenni Girasole Club, kamperen op Camping Norcenni Girasole Club.
About the size of a Fender Twin, it has the classic tweed look of late s Gibson amplifiers. The only effect that the amp features is tremolo, but this is to be expected since the design predates the age of combo amps with on-board reverb The Gibson catalog claims true vibrato pitch modulation for this amp, but after listening to the true vibrato Magnatone amps, the Gibson sounds like it has tremolo volume modulation very similar to that used on brown Tolex Fenders i.
They play an important role in the unique sound of this amp which we’ll get to in a moment. First, let’s go over the tube compliment. Every true stereo amp has two separate power amps.
Portable Audio. At Sam’s Club®, we have the portable audio accessories you need to listen to your favorite tunes in style. From Bluetooth-enabled portable speakers to wireless surround systems, we feature large and small audio components in various price ranges to make the sound come alive in your home, office or dorm room.. Types of Portable Audio Devices.
The AR was in use as early as , mainly in commercial shipboard radio rooms. The receiver circuit uses one RF amplifier, a regenerative detector and two stages of AF amplification. Tuning is from 15 KC to KC in four bands. The Preselector was used to reduce regenerative signal radiation to the antenna in addition to increasing sensitivity and selectivity. The National Type “N” dials are scaled with deg. The RAZ-1 could be operated from batteries if necessary.
Dating Ampeg Amplifiers :: Ampeg
Download This page contains information about installing the latest Midiman driver downloads using the Midiman. Midiman oxygen 8 driver vista then launch the mac. On HAX tech forever. Midiman oxygen 8 driver vista. Windows All versions, Ubuntu. Automatic scan and update your PC drivers.
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Not open for further replies. Massachussetts Hi folks, I’ve had these speakers since I purchased them new in I had cabinets made according to plans that I got at the time and I’ve been really happy with them ever since. One thing I could never determine is exactly what the crossover does. Here’s a photo not mine but just like mine: Now I think what it does is it takes the full signal coming in and it divides the low frequencies to the woofer and the high frequencies to the horn tweeter.
I don’t notice a difference in the bass response, but then again, they do call it High Frequency Attenuation. At what frequency does that split happen? Is there a “correct” way to set these? Anything in particular I should listen for when setting them? I just set them by ear at about “-2” and that’s how I’ve had them for years. Also do these speakers “suck”?
Dating Your Fender Amp
It is beautiful listed as B1 looks perfect to me. Thanks for an excellent buying experience. MN Hey I wanted to take a moment to thank everyone involved for this great deck. So thanks again and keep up the good work.
JBL makes a wide range of speakers and subwoofers both under the JBL name and also under the Altec Lansing and Harman Kardon names. Per manufacturing regulations, the makers of electronics must include a minimum amount of production date information on their products.
I’ve seen a number of books that begin with one definition. At least it didn’t involve turning lots of pages. Evidently, influir is in there because it occurs in the definition of influjo. The back cover blurbiage includes the following statement: Isn’t it only the back leg? Mother very thoughtfully made a jam sandwich under no protest. Another example of the use of this word is in the famous encyclical letter issued by Pope John XXIII, entitled Pacem In Terrarium, which urged all animals living in a confined space with limited resources to please calm down.
Something like that, anyway. I was going to mention that the pope issued a papal encyclical, but it seems that’s the only kind he issues, and he seems to have a monopoly on the practice, at least for the last few centuries c. Most volcanoes erupt mouldy jam sandwich under normal pressure. There is a certain balancing act in this glossary — in order to create a certain level of amusement, I find it useful, even necessary, to introduce certain This entry contains an inaccuracy that does not satisfy this last criterion.