Try Live Demo

Item Tag: Numark

NUMARK TC4100 MIXER Repair Kit DBX-200 DBX-400 SONY SB-300 AKAI DS-5

800×600 Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 NUMARK TC 4100 MIXER Repair Kit A couple of years ago I opened a listing to offer up a few extra Numark TC4100 Stereo Tape Deck Tone Generator/Mixers I had on hand. In that listing I identify a pervasive reliability issue with this particular vintage item (individual input channels going dead) and offer the mixers along with the parts that will be needed (either now or later) for repair. That listing comes and goes as my inventory of spare TC4100’s goes up and down. If you own a TC4100 you either now have, or will have, the problem that listing describes. I promise! As a byproduct of that listing I’ve received several requests to buy just the repair parts. These parts are difficult to track down and it’s easy to buy the wrong part. You don’t know what you don’t know until you get a potential substitute part in hand and actually try to install it. For example, who would have thought that some manufacturer would provide different threads in the mounting holes!!!)? Or who would have thought that some manufacturer would shorten the stem for attaching the knobs such that the knobs won’t install? Nonetheless, through some trial and error I’ve found parts that are suitable substitutes for the originals. The parts contained in this kit are both electronically and physically suitable for use in replacing the originals. Buyers don’t need to inform me that these replacement pots are not as tall as the originals. I’m aware of that and these pots work fine. HOWEVER, don’t plan on replacing just the one pot that you have failing! Because of the height difference the original pots will not co-mingle with these replacements. Also, I’m aware that the pins on the back of these pots don’t perfectly line up with the mounting holes on the circuit boards. I address this in the installation tips I include with this repair lit. If you own a TC4100 and you have one of the very few that isn’t failing yet, you might want to consider purchasing this repair kit anyway. I’ve had to switch suppliers twice as one and then another quit handling the particular pots that are required here. My current supplier has been unable to fulfill an order I placed several months ago and I’m not sure where that will wind up. Three months or so from now I expect my current supply to be exhausted. What I can sell you today I may NOT be able to sell you later. Word to the wise. An avid user of the TC4100 can become very reliant on its unique features to keep an audio system fully functional. The cost of this kit is pretty cheap insurance to protect you from the failure your machine will eventually exhibit. To my knowledge there is no “other mixer” that can do what this mixer can do”! You might want to go read the verbiage in my original listing for a little background if you’re interested in this repair kit. (I’ve included most of that verbiage towards the end of this listing.) This “Repair Kit” listing will make more sense if you do that. So, what I’m offering in this listing is replacement parts for the 6 potentiometers required for a complete repopulation of the pots on the mixer. I’m also including a pair of new meter lamps which you may not need today, but once the mixer case is opened up and you’re looking eye to eye at these lamps replacements might be installed as a preemptive strike . If you have adequate technical skills (that is, you can use a screwdriver, needle nose pliers, and are proficient with a soldering iron) this is a repair that you can finish on the kitchen table in an evening. If you don’t know which end of a soldering iron to grab you may want to farm out this project to a more technical friend. Stated shipping is for US destinations. Non US destinations will be shipped through the eBay Global Shipping Center at additional cost to the buyer. So that’s 6 pots and 2 lamps in this repair kit. I’ll also include a few tips I’ve learned along the way, but don’t expect that to be step by step installation instructions. I’ll also include the four page installation guide that originally came with this mixer. Thanks for looking! NUMARK TC4100 MIXER Tone Calibrator If you need to switch audio inputs and outputs for up to four tape decks, VCR’s, CD/DVD players or recorders, your PC sound card, or any other two channel audio player or recorder, you should have this device on your short list. You’ll find here very convenient features that simply don’t exist in other switching units. Go look at the DBX-200X, DBX-400, Vanco TDS-3, SONY SB-300, the AKAI DS-5 or most any other tape deck switching unit out there for comparison. See if ANY of them include ANY of the following features of the NUMARK TC4100: · Two VU meters · Internal tone generator · Signal level adjustment for the individual decks · Complete input and output switching for each tape deck · Rear panel inputs& outputs for up to four stereo tape decks The Numark is the only unit noted here that offers ANY of these significant features, and the Numark offers ALL of them! The Numark TC4100 does have a couple of issues: · One is, there aren’t very many of them out there and most potential users don’t even know that this item exists. I just did a quick eBay search and found over 20 DBX-200’s and just two Numark TC4100 listings…both of them mine. · The TC4100 hasn’t been manufactured for over 30 years. AND it wasn’t particularly well marketed when it was available new. I could be wrong but to my knowledge DAK was the only retailer selling this mixer (as the “Tape Deck Octopus”) back in the early ‘80’s. · People aren’t aware of the unique and significant features of this item. See above! So they purchase a lesser item not realizing the advantages they passed up. · There is one shortcoming with this model that I’ll thoroughly address below. I’ve owned literally dozens of this specific model and I currently have 5 of them in use in various stereo and Quad audio systems, and a few more on hand for sale. Odds are very good that I have more experience with, and more knowledge about, this mixer, by a wide margin, than anyone else trying to sell one. A little history first. In 1972 I had three stereo tape decks and one stereo receiver that had just one tape monitor circuit. I needed the ability to edit and copy audio tapes from any of my tape decks to any other, and the ability to record and play back through my receiver using any of the three tape decks I had. I designed and built a tape switching unit using 16 RCA jacks, four switches from Radio Shack as I recall, a heater can from a main frame computer and a mess of wires. It wasn’t pretty (and still isn’t, see photo) nor an engineering masterpiece. But it did the job for over a decade. Then, in 1984, I bought my first Numark TC4100. At the time The TC4100 did everything I need admirably, with inputs and outputs to spare. And considering the built in VU meters and tone generator, it added much more function, value, and convenience than any of the simple minded tape switching units that were available at the time. That is still the case today! After many years my TC-4100 lost one of the channels on one of the inputs. And then a channel on another input quit. And then another. After enough of that I bought a second TC 4100 right here on eBay that “works perfectly”. But guess what?? It exhibited the same sort of failure…losing one or both channels from one or more in the four inputs, rendering that input(s) unusable! So I bought another…and another. And most ALL of them had the very same problem to varying degrees. For a while I was able to salvage parts from one of them to repair another. But keep in mind here that I was replacing an old worn out part with another old, almost worn out part. Over time my needs changed and the number of TC4100’s I had in play grew. I now have two of them in use in my vintage Quad system, another one in use in the Quad system in my office, and another two in use in the test bed in my shop where I repair Teac tape decks. And then several more on hand! (See photos.) What I learned is that the level controls (most of them are dual pots (potentiometers) behind the sliders on the face plate) used in this machine have a finite life. In my opinion, based on many years of hands on experience with many of these TC4100’s, I’m confident that eventually all of the TC4100’s out there are going to fail. I have yet to see a TC4100 that didn’t eventually exhibit this failure. I went in search of replacement parts so I could repair a few of these units for my own use. And also I wanted to offer up the TC4100, unrepaired but with the needed repair parts to adventurous users. Locating a suitable substitute part for these problematic potentiometers was not an easy task to say the least. Finding a part with dual pots of the correct resistance is easy (is that a logarithmic or a linear pot?). But there are many physical characteristics to consider beyond simple length and width. And overlooking any one of them will get you a part that you can’t use! This is the voice of experience speaking. I’ve now replaced the pots in the five mixers I have in use, and have sold over a dozen for others to repair. Eventually I exhausted my supply of pots, discovered that my supplier could no longer provide the parts I needed, and had to close the two listings until I could find another supplier. It took some months but I’ve now found a new supplier and I’m back in business! The parts cost quite a bit more than they did and I needed to raise prices a little to cover at least part of the additional expense. But it’s still a bargain considering the features this unit offers compared to what else is out there. Even if the buyer needs to pay a tech to replace the parts this item is still a “price performer” in terms of the features and functions provided! The only problem I’ve ever seen in 30+ years of use with this model is the pots, and an occasional burned out meter lamp. The unit you get may work fine upon arrival, in which case the buyer will have successfully stolen the device from me. But regardless it will eventually need the parts I’ll include. Anyone selling a similar item and claiming that it works perfectly either has the one in a million that actually does work perfectly, or more likely just doesn’t know how to thoroughly test it. I’ve certainly bought my share of “works perfectly’ TC4100’s that IMMEDIATELY failed as described above upon arrival and initial testing. If you buy one that “works perfectly’ and find that to not be the case when it arrives, keep in mind that I offer the repair parts separately. I’ll include a copy of a four page installation document that came with my original unit. (Please remind me that I said this!) Interestingly, this document specifically warns against using “SPRAY CLEANER FOR ANY SLIDE CONTROL”. This is precisely what someone would try given the failure I’ve seen over and over. I’ll also include a few tips I’ve learned along the way, but don’t expect this to be installation instructions. If you can use a screwdriver, needle nose pliers, and a soldering iron, this is a repair that you can finish on the kitchen table in an evening. If you don’t know which end of a soldering iron to grab you may want to farm out this project. Please take a look at my feedback: 100% positive with hundreds of items sold. I can maybe provide advice and council when you get around to switching out the pots. Thanks for looking!

NUMARK TC4100 TAPE MIXER WITH $49 REPAIR KIT DBX-200 DBX-400 SB-300 AKAI DS-5

NUMARK TC4100 MIXER Tone Calibrator IMPORTANT NOTE: I personally wrote every word in this listing. These words, other than a few minor edits over time, have been in this listing for two or three years. When you read it you might reasonably concluded that I know what I’m talking about regarding the TC4100. I’d like to think that that would be correct. If you look around at other TC4100 listings you will see large pieces of my verbiage making up the majority of the listings of other sellers who have STOLEN my work. And thus, they also may sound like they know what they’re talking about. That may or may not be correct. I’ve requested that these thieves remove MY VERBIAGE from their listings. Some have honored that request and some have ignored it. NOTE: This listing includes my $49 repair kit (new pots) that you’re going to need regardless of where you buy your TC4100 or what you pay for it. Read on. If you’re in the market for a device to switch audio inputs and outputs for up to four tape decks, VCR’s, CD/DVD players or recorders, your PC sound card, or any other two channel audio player or recorder, you should have this device on your short list. And if you don’t know what a Numark TC4100 is you should read this listing in its entirety. Once you understand the capabilities and features of this component you will be hard pressed to convince yourself that some other (lesser) switching unit is a better fit for your needs. Read on for some information you’ll be happy to have, lest you discover later that the simple minded tape switching unit you settled for can’t measure up to the TC4100. You’ll find listed here very convenient features that don’t exist in other switching units. Go look at the DBX-200X, DBX-400, Vanco TDS-3, SONY SB-300, the AKAI DS-5 or most any other tape deck switching unit out there for comparison. See if ANY of them include ANY of the following features of the NUMARK TC4100: · Two VU meters · Internal tone generator to assist in setting bias and recording levels · Signal level adjustment for the individual decks · Complete input and output switching for each tape deck · Rear panel inputs & outputs for up to four stereo tape decks The Numark is the only unit noted above that offers ANY of these significant features, and the Numark offers ALL of them! There is one shortcoming with this model that I thoroughly addressed below. A little history first–>> I bought my first Numark TC 4100 in 1984. I bought it from DAK and as far as I know Drew Kaplan (DAK) is the only retailer to offer this item. See his advertisement from a 1985 Stereo Review). I still have this Numark mixer, and I still use it (after repairs). In 1984 I had two reel to reel tape decks, a cassette deck, and a stereo receiver that had just one tape monitor circuit. The TC 4100 did all of the switching I needed, with inputs and outputs to spare, and considering the built in VU meters and tone generator, added much more function and value than any of the simple minded tape switching units that were available at the time. That is still the case today! After many years of use one of the channels on one of the inputs quit working. Later a channel on another input quit. And then another. After enough of that I bought a second TC 4100 right here on eBay. And guess what. It exhibited the same sort of failure…losing one or both channels from one or more of the four inputs, rendering those inputs unusable! So I bought another…and another. And most of them had the very same problem to varying degrees. I was able to salvage parts from one of them to repair another to get one mixer that was 100% operational. But keep in mind here that I was replacing an old part with another old part. Over time my needs changed and the number of TC 4100’s I had on hand grew. I now have two of them in use in my vintage Quad system, another one in use in the Quad system in my office, and another two in use in the test bed in my shop where I repair Teac tape decks. (See photos.) And another dozen or so of them on hand! What I’ve learned is that the level controls (the potentiometers (pots) behind the sliders on the face plate) in this machine regularly fail. I believe this is a result of age more than use as I’ve seen virtually new vintage examples of this mixer failing as described. Depending on which pot failed the result will be input or output paths that no longer work, a meter that no longer works, or a tone generator that appears to no longer work. We are now 35+ years down line from the initial availability of this mixer. Based on decades of experience with manyTC4100’s I’m confident in saying that eventually all of them are going to have issues with these potentiometers. If you doubt this take a look at another of my listings where I offer just the repair kit (pots and lamps) for this mixer. You’ll see that I’ve sold several dozen repair kits through that listing. TC4100 owners are buying the kit because their TC4100 is failing in the manner described above! Most of the other two channel mixers & switchers that are available out there are also 30+ years old, each with its own shortcomings. The seller may or may not identify those issues, but nothing lasts forever. Through a lot of research, trial and error, I eventually tracked down a suitable substitute part for the pots, compatible both electrically and physically with the originals. Having bought dozens of these mixers, and a couple hundred pots as replacement parts, I find that I’ve actually repaired just six of them for my own use. I intend to sell several of my spare TC4100’s, along with the repair parts that I know will be needed. If you can use a screwdriver, needle nose pliers, and are adequately skilled with a soldering iron, or if you know someone who is, this is a repair that can be finished on your kitchen table in an evening. The pots are soldered onto a printed circuit board, so a steady hand is necessary. I’ll include a copy of a four page installation document that came with my original unit from Numark. (Interestingly, this document specifically warns against using “SPRAY CLEANER FOR ANY SLIDE CONTROL”. This is precisely what someone would try when the failure I describe here exhibits itself.) I’ll also include some pointers to help with the eventual replacement of the pots…things that I learned when I replaced them that I’m happy to pass on. The unit you get MAY work fine upon arrival but don’t expect that! Anyone selling a similar item and claiming that it works perfectly MAY be offering the very rare one that does currently work perfectly. I’ll point out here that to completely test this mixer requires four stereo input/output devices (for example, tape decks). Personally I have over 20 tape decks. Having bought a few dozen TC4100’s, I can say that the only one that consistently worked PERFECTLY for years is the one I bought new back in 1984. And I’ve purchased several that were claimed to “work perfectly” but failed as described in this listing IMMEDIATELY upon arrival. Caveat Emptor! SO, WHAT I’M SELLING HERE IS ONE NUMARK TC4100 AND SIX REPLACEMENT POTS TO BE INSTALLED BY THE BUYER (or his/her technician depending on the buyers soldering skills). The unit will be complete, both meters will work and are backlit. Some of the inputs will operate upon arrival. Expect maybe a few scratches on the sides, top or bottom, but the faceplate will be cosmetically presentable. Stated shipping is for the lower 48 states and includes insurance and packing material. Any international sales will be shipped via the eBay Global Shipping Program. The photos are representative of what I have on hand and WILL NOT be the exact machine you receive. I won’t sell you a machine that looks like a train wreck. Please take a look at my feedback and note that a half dozen or so buyers of my repair kit have all provided positive feedback. I normally offer returns but in this case I’m asking the buyer, or his tech, to open up the unit, and do some soldering. I can’t take the chance that a buyer overestimates his soldering skills, burns up a few land patterns on the printed circuit board, and then wants to return the unit. It happens! This item is being offered as-is with the potential issues noted. While I’m listing it as not returnable if the buyer discovers something that I haven’t mentioned here please contact me. I’m a reasonable man and would think that we can work something out that everyone can live with. Thanks for looking! 800×600 Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4

Numark Vintage Stereo Headphones Professional Series Model DH-30VS Stereophone

Introducing the Numark Vintage Stereo Headphones Professional Series Model DH-30VS. These headphones are a classic product of Numark and have been designed for professionals who demand the best quality sound. With its stereo features, users can enjoy a superior listening experience whether they are using it for personal or professional purposes. These headphones come in a sleek white color and are perfect for vintage electronics and audio enthusiasts. The brand name Numark speaks for itself and is synonymous with quality and reliability. The Model HV-105 is highly sought after and is perfect for music enthusiasts who appreciate the beauty of classic audio equipment. The headphones do work however they are missing the knob on the right side. This doesn’t affect functionality just aesthetics.

Vintage Numark HV-105A Professional Series Stereophones Stereo Headphones

Experience the classic sound of the 1980s with the Numark HV-105A Professional Series Stereo Headphones. Designed for audiophiles and professionals alike, these headphones are suited for studio monitoring, live monitoring, and DJing. The robust headband design provides comfort for extended use, while the ear-cup style offers isolation from the outside environment, allowing you to immerse yourself in your sound. The HV-105A features a 6.35 mm (1/4 in) stereo connectivity, ensuring a reliable and high-quality signal transfer. The black earpieces are crafted in Japan, reflecting the attention to quality and detail that Numark is known for. With a convenient 6ft cable, these headphones are ready to be the centerpiece of your audio setup.

Vintage Numark Professional Series Dynamic Stereophones HV-101 Japan Tested

Vintage Numark Professional Series Dynamic Stereophones HV-101 – Made in Japan – Tested Condition: Preowned/Used – Tested and Working Please review all photos carefully, as they are an essential part of the item description. They help provide a clear understanding of the item’s overall condition, color, size, and measurements. If you have any questions or would like more photos or information, don’t hesitate to reach out before purchasing. 🛍️ Looking for more unique finds? Be sure to check out and follow our store—we add new items daily! We also offer combined shipping for multi-quantity orders. 📦 Shipping Method: USPS Ground Advantage 🗂️ Inventory #: C18

Experience Our AI Assistant In Real Time

Enter your phone number below to see how our AI works.