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Overnight Sensations MTM

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S2000 MTM

The Speedster

Quick Overview

A very small speaker with great bass response.


$110.00

Availability: In stock

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$110.00

Details

Note May 19, 2022: The retail price of the woofer when using a coupon is now cheaper than the wholesale price. So this kit is now being offered without the woofer but comes with the flat pack.  You can buy the Tang Band W4-1720 woofer at Parts Express or other places.  

The small size of the Speedster is deceiving.  Thanks to the Tang Band woofer and Fountek ribbon tweeter you'll get that high end sound along with good bass response from a very small speaker.  They also make great computer or bedroom speakers.

From the speaker designer:  These speakers are like those roadsters, spyders, speedsters, and barchettas.  They are meant to be small, cool, and fun to listen to.  They're for private listening, and enjoying the music, and leaving your cares someplace else, miles away.  They are not the cheapest speakers on the block. but you get what you pay for: a well-engineered woofer with a massive underhung motor, and a true ribbon tweeter.  The result is a speaker that provides plenty of detail and dynamics, but in a very small cabinet.  Depending on how you finish them, they can disappear into the decor of a room, or be showcased like the little luxury item they are.

 

Product Highlights:

  • Great bass response for a speaker this size.
  • Ribbon tweeter for dynamic high frequency response.
  • High quality name brand components.
  • Optional flat pack makes for an easy to assemble kit.

 

 

Minimum order is 2 speakers: If you ordered one in the past and need one for a center, please contact me. Kits are sold as full kits, sorry no substitutions or subtractions. Don't forget binding posts, terminal cups, or speaker spikes if you need them because they can be shipped for free with any kit or flat pack purchase.

Shipping Note: We try to get your order packaged and shipped in 5-8 days depending on how many orders have come in.  Please read the 'Frequently Asked Questions' section for more information.

  1. Still Takes the Cake review by AJ on 4/14/2020
    Design
    Performance
    Value

    I built a set of these about 5 years ago, and they've been fantastic in near and medium fields. Much more extension than anything I've heard their size, and more than many larger. I keep coming back to them after bouts of Gear Acquisition Syndrome, once from a pair of speakers 4 times their price. Just so much vitality and such a great signature. A little bass boost and good extension with a great timbre that never gets dry. The only thing that I find less than great is the dispersion pattern. They have a somewhat narrow sweet spot laterally, and a very narrow one vertically.

  2. Great bang for the buck. review by Sean on 1/31/2020
    Design
    Performance
    Value

    I will start this off saying that these speakers absolutely blew me away right out of the gate, between the imaging and overall sound quality they are going to be my go-to speakers for the foreseeable future. These were my second DIY speaker build ever, and the first was a design from the parts express forum several years ago, which while sounded great, my woodworking skills, or lack thereof, left a lot to be desired, so I hesitated to jump back into the DIY speaker scene.

    However, all that aside, thanks to the fantastic flat pack and a forgiving finish, they came out better than I ever expected, and WOW. Did I mention these things sound great? I might not have the best ears, but I honestly have yet to find anything about these speakers that I don't like, the bass is astounding for a speaker this size. Sure, you're not going to get near-infrasonic bass out of them, but except for on electronic music with extra low bass, you don't really need it. And the imaging, oh goodness the imaging, put on Madonna - Vogue or anything by Yosi Horikawa and close your eyes, and you'll swear there's speakers behind you, it is unreal.

    Despite being nigh useless at woodworking, I still managed to get them together and finished over a long weekend, and have been listening to them every spare moment I have since. I have them set up on some cheap foam monitor wedges and powered by a small topping desktop amp, whereas my previous setup was a pair of Infinity IL40 towers driven by a pair of 80s H/K mono amps along with an admittedly overkill SVS sub, and honestly I don't see myself going back any time soon.

    I seriously cannot praise these speakers and the kit enough, even the packing was top notch. Many thanks to Erich for making DIY attainable for people without the woodworking tools or skills like myself.

  3. First DIY Speaker Build review by Matt on 1/14/2019
    Design
    Performance
    Value

    My grandma wanted "a Bose system" so she could listen to music. I figured I'd surprise her for Christmas and dip my toes into the DIY world at the same time. The box went together easily because the boxes were perfectly cut. The drivers were much more stout than I expected. I had a couple weeks before Christmas to play with the speakers and break them in. I was immediately impressed with the crispness of the sound compared to my KEF Q100's. The bass held their own too which was surprising for how small the drivers and enclosures are. I'm sad I had to give them away after a few listening sessions. My grandma thoroughly enjoyed the speakers also. This was an excellent kit for a first-timer.

  4. Amazing kit review by Yian on 10/1/2018
    Design
    Performance
    Value

    I'm going to review the kit provided rather than the sound signature since its been done before in many places. This kit is packed with 500,000 packing peanuts. Seriously if anything arrives damaged the shipping company probably threw it off of the hoover dam. Even crossover components come individually wrapped as well. I had ordered the kit with the flat pack and the whole thing fit together perfectly, and were really smooth so I had no sanding to do before priming. There were no nicks or warping to be found anywhere. They recessed part that the tweeter goes in is perfect, certainly great for a first timer like me. The ball is in your field to make a really awesome product.

  5. Nice little speakers review by beatle on 9/20/2018
    Design
    Performance
    Value

    I built these as an upgrade to my Overnight Sensations as desktop speakers. The ribbon tweeter is a nice upgrade, but you'll still want a subwoofer with these. I found them to be very, very harsh when I first fired them up. They were almost to the point of being painful, even at moderate volume. I thought I'd made a mistake as I built the cabinets from scratch and shelled out some coin for a table saw as an entry into DIY speakers. The tweeters eventually settled down and now sound very nice. Are they 3x better than the OS? No, they're not. Maybe that speaks more to how much above its weight class the OS can punch than the Speedster's ability to pull away.

  6. First DIY build review by Alex on 9/19/2018
    Design
    Performance
    Value

    These were my first DIY speakers and to I loved every part of the build. Very easy to build with the flat packs. Every time I listen to these I can't believe how big they sound. I can hear every detail in any song I hear and absolutely love it.

  7. Using as desktop computer speakers review by Sean Mc on 8/4/2018
    Design
    Performance
    Value

    There are replacing some Overnight Sensations for my office PC. In both cases I used some Yoga Blocks to raise the speakers up away from the desk surface according to Paul Carmody's advice:

    "The speaker would work on a desk, although I might advise raising it a bit off the surface of the desk to keep bass response in-check."

    Raised 8" off the desk surface, these do nicely in this configuration. A fun project with great results for an affordable price. Another winner from DIY Soundgroup and Paul C.

  8. A great little pair of speakers review by CJ on 5/13/2018
    Design
    Performance
    Value

    First, I'd like to say DIY Sound Group did an excellent job with the kit. The cabinets were made exceptionally well, and everything was packaged like they were shipping a Faberge egg. They even threw in a couple extra screws for people like me that always seem to lose them.

    The speakers themselves are outstanding for what they do. If you want something that fills up a small-to-medium room, gives a great listening experience from a couch or chair, and has enough bass to pack a punch without the neighbors knocking on your door, these are perfect. Near-field, they are a lot less exciting, and there are better choices if you're going to be throwing house parties. But what they do offer, they do extremely well.

  9. Don't judge by the size. review by Mahuzz13 on 3/3/2018
    Design
    Performance
    Value

    (Posted on 11/26/17 from the old site)

    Well I finally found out what everyone is talking about when they say Erich and his packing unbelievable. Word of advice open the box from the bottom.
    Now onto the build, got Matt to do up the cross overs, so clean and professional well worth the little extra to get Matt to do them up. The boxes went together perfectly, did a quick audio test before I painted the put the last screw in just make sure everything was working. If you don’t have binding post just get them from Erich I went cheap and they were to short but made it work but a pain. As per Matt’s recommendation I filled the cavity with poly fill from Walmart but left enough space behind the woofer and the port to allow air flow out the port.
    Now onto performance, all I can say is WOW, these little guys put out some serious volume and I only have a small 15w amp hooked up to my computer. The ribbon tweeter is so clear and crisp and that little woofer puts out some serious bass , no real need for a sub unless you are a bass junkie. For music they fill up my whole main floor (1200sqft) and for movies they are incredible, just watched some trailers on the computer and you get emersed into what is playing on the screen, the clarity of there voices, the explosions makes you want to go see the movie that much more. If you are thinking about buying don’t think anymore just buy them you will not be disappointed. I hope this review helped make up your mind.

  10. These are the real deal. review by John on 3/3/2018
    Design
    Performance
    Value

    (Posted on 10/4/16 from the old site)

    The Speeders are my first experience with a ribbon tweeter and, well, I sort of want to throw the rest of my speakers away now.

    If you've heard the Overnight Sensations, the Speedsters are similar but better in every way. Don't get me wrong; I think the OS (particularly the MTM version) are some of the best values in the world.

    But the Speeders are what I'd call an actual hi-fi speaker. Detail from that magic ribbon tweeter is simply amazing. Bass is incredible: deep and very controlled, not just boomy. It's not deeper than the Overnight Sensations, but it's more detailed and fills the room somehow - I had legit "where's the subwoofer?" moments.

    These get plenty loud for a small or mid-sized room with a 50wpc amp. At 75% gain on the amp they still sounded clear as day and as if they wanted some more.

    If you're considering a compact 2.1 system, forget it - go with these in a simple 2.0 config. While these are obviously begging to be used in a 2.0 music setup the bass is definitely satisfying enough to be used in a bedroom/dorm/office for games and movies as well.

  11. Just like a small sports car. Impractical, but fun as hell! review by JohnBooty on 2/24/2018
    Design
    Performance
    Value

    These are some of my favorite speakers. The bass produced by the tiny woofer has to be heard and felt to be believed. The fact that woofer that small can induce that actual "tactile" midbass feeling in your chest in a smaller room is just incredible. The ribbon tweeters are also a delight, delivering insanely detailed (but never harsh) treble.

    The downsides? They're a bit impractical. Dispersion from the ribbon tweeters is quite narrow. If you're not sitting in the sweet spot, you're out of luck.

    They also don't make good "nearfield" speakers. I initially intended to use them as computer speakers, flanking my monitor. But when sitting that close, the sound from the tweeter and woofer does not blend well.

    So, realistically, the ideal setup for these dudes is placed atop stands in a small room, with the listener about 6-10" away. Despite that limitation I still love them though. They're like a little sports car that makes a lousy daily driver but is so much fun you'll never part with it.

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Speaker Kit Information

 

  Model:      The Speedster
  Designer:      Paul Carmody
  Frequency Response:      44hz - 30khz (+/-3db)
  Power Range:      5 - 60 watts
  Sensitivity:      85db - 2.83v/1m
  Impedance:      4 Ohm
  Tweeter:      Fountek NeoCD1.0
  Midrange:      N/A
  Woofer:      4" Tang Band W4-1720
  Enclosure Type:      Ported
  Dimensions:      6" W x 10" H x 8.5" D
  Kit weight:      About 8 pounds
  Assembled weight:      About 11 pounds

Price Break Down:

1 - 4" Tang Band W4-1720 woofer: $55.79 - No Longer Included, must purchase separately.
1 - Fountek NeoCD1.0: $55.00
1 - Denovo CNC cut front baffle: $8
1 - Set of crossover parts: $31.77
1 - Speaker port: $2.76
1 - Set of screws:  no charge
1 - Flat Pack now included: $14
 
 

Packaging Material: $2.00

Paypal Fee: $3.90

Retail Cost: $117.43

Discount Cost: $110

Please read the 'About Us' section for more information on pricing structure and quality parts used.

Specific Speedster Assembly Notes: 

The designers directions and crossover schematic are located here.

 

Recommended Tools and Supplies:

  • Quality wood glue like TiteBond.
  • At least 2 clamps 6" wide or bigger.  You can use masking tape to hold the panels together if needed.
  • Soldering Iron and solder unless there is an optional assembled crossover for your kit.
  • Wire cutters
  • Screwdriver
  • Drill to predrill all screw holes.
  • Sanding block or power sander.
  • About 2' of speaker wire to connect your woofers and tweeter to the crossover board.

 

General Tips:

    Crossover Assembly: 

  • VERY IMPORTANT - Inductors are the parts that look like small rolls of copper wire. Notice that the two ends of wire are silver and have been 'tinned' with solder. Those are the parts of the inductor that you should be soldering to, so don't cut it off to get to the copper colored portion.  Inductors should not be installed directly next to each other on your board.
  • None of the crossover parts have a positive or negative side so it doesn't matter which way they are facing when you assemble your crossover. 16-18 gauge wire is thick enough to use for your crossover or to go from your crossover board to the woofer or tweeter.
  • Your crossover can be assembled on a thin piece of MDF or pegboard if the kit doesn't come with a circuit board.
  • It doesn't matter where you put the crossover inside your speaker.  You could mount it on the outside if you wanted to.  
  • Normally you wire red wires to positive and black wires to negative.  If (and only if) your crossover schemtaic has a note saying 'Inverted Polarity', that means you need to connect the negative from the crossover to the positive on the tweeter and positive from the crossover to the negative on the tweeter.  This is only done on some tweeters, not woofers.
  • Click Here for a good assembly video by Matt Grant.

     

     Screws and Gaskets:

  • Predrill all screw holes with a bit that's slightly smaller than your screws to prevent the wood from splitting.  Most screws are #8 panhead and you can use a 7/64" or 1/8" drill bit.  Overnight Sensations use a #6 panhead so you can use a 3/32" bit.
  • VERY IMPORTANT:  Protect your woofer or tweeter when installing screws because you don't want the screwdriver to slip and puncture one of your components....that will ruin your day!  Consider putting your free hand next to the screw to cover up the edge of the woofer or tweeter.
  • If your kit comes with gasket tape, it should be applied to the back of the waveguide. Peel the paper off the back to expose the sticky side and slowly work it around the perimeter on the back side of the part.  Some woofers will need gasket tape as well.

   

     Stuffing or Lining the Speaker Cabinet:

  • If your speaker or subwoofer is a sealed cabinet, most designers recommend that you lightly fill the inside with polyfill (pillow stuffing).  If you don't have polyfill, then you can line the walls with 1" - 1.5" thick light weight open cell foam (like acoustic foam) or fiberglass insulation.  You can also use 2-3" recyled denim insulation that can be bought at Home Depot.
  • It's okay to cover up your crossover with the polyfill, insulation, or foam.
  • If you're using a ported enclosure you should lightly fill the cabinet with polyfill and be sure not to block the ports.  If you do not have polyfill then line the walls with 1" - 1.5" thick open cell foam (like acoustic foam), 2" - 3" of denim insulation, or 2" - 3" thick poly batting.
  • Some of the speaker designers like to lines the walls of their ported enclosures with a 1" - 1.5" acoustic foam, and then lightly fill the remainder of the cabinet with polyfill.  If this is a required method, it will be listed at the top of the page under 'Assembly Notes'.

 

Links to Build Threads for this Speaker:

Frequently Asked Questions:

* Does this kit come with a circuit board to assemble the crossover on?  Answer:  No, most people assemble them on a small thin piece of wood.

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