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Tang-Band-D4-1-DIY-Back-Horn-Speaker-Kit.jpgTang Band D4-1 DIY Back Horn Speaker Kit6946 viewsThe fun and simple Tang Band D4-1 DIY Back Horn Speaker Kit. This little speaker kit comes complete with all the parts and tools required (minus a soldering iron). There is no cutting or finishing required (no saw dust or fumes!). The kit is very simple to build as it goes together just like ready-to-assemble furniture.
For a full review of this speaker kit, see: Tang Band D4-1 DIY Back Horn Speaker Kit.
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mURI_temp_630f4f06.jpgDIY Speaker Cable6921 viewsThis is DIY Speaker Cable that I made for a friend.
This is the regular twisted pair design with the double shielding. I've used the regular heat shrink tube for the primary shield and nylon braided sleeve for the secondary shield.
The ends are terminated via plastic banana pins.
Also, here is a pair of DIY Braided Speaker Cables that I made.
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dsc_0987.jpgDIY Open Baffle Speakers6919 viewsRemoving the most detrimental factor to sound quality - The Box!
Tweeters: 4x Hivi K1
Midrange: Seas L21 RNXP
Woofers: Jaycar CW2119
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IMG_1869.JPGriverrat373's K-502 Tube Amplifier Kit - Front6917 viewsK-502 Tube Amp Kit without transformer cover and tubes.
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Fostex-FE206E-Double-Bass-Reflex-Speaker-Enclosure.jpgFostex FE206E in Double Bass Reflex Speaker Enclosure6908 viewsThis is the simpler enclosure recommended by Fostex for their high sensitivity FE206E drivers. The large magnet and basket spokes of the driver have been covered with bituminous damping. The upper chamber has sound deadening vinyl across the back and the rest of the upper chamber has double layers of thick Dacron lining it. The boxes are fastened using dowels, glue and wood screws. A Speaker Zobel / Impedance Equalization Circuit is used across the driver terminals. The sound soundstage is pin-point sharp and with good depth. Bass is sufficient without being heavy. For under $AU500 these speakers represent very good value. With a sensitivity of 96 dB/W my 6 W Ultra-Linear Single-Ended valve amps can produce a high sound level.
For full details see the Fostex FE206En Double Bass-Reflex Speaker project page.
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2_with_bigger_brother.jpgDIY Phono Preamp, Valve Preamp and Chipamp Monoblocks6879 viewsThis image shows the degree to which Paul has gone with an all DIY audio set-up. You can see all three main components. Also Paul made some Silver Highway, pure silver and heat-shrink interconnect cables. The Valve preamp (larger silver front enclosure) and Chip amp monoblocks are earlier builds of mine. He is also using OB speakers I built which have had serious Xover upgrades and also a sub-woofer of mine to compliment the OBs. This combo produces a phenomenal sounds stage image with exceptional detail and clarity.
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S5-Electronics-K12-Tube-Amp-Kit.JPGS-5 Electronics K-12 Tube Amplifier Kit6867 viewsThis is a S-5 Electronics K-12 Tube Amplifier Kit. I run a Cambridge Audio Azure 540C CD player into it and it feeds a pair of 70L 12" 3-ways - the classic '70's speakers - a kit from Macs Hifi ( no longer there) in Adelaide. They are very efficient as you would expect - and have been upgraded several times with new drivers and crossovers.
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Diaphony3.jpg"Diaphony's" An open baffle design6857 viewsConstruction
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DSC_0168.jpgS-5 Electronics K-12M at Northern Californial DIY Event6855 viewsHere the S-5 Electronics K-12 Tube Amp is on display at a Northern Californial DIY Event.
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Jordan-JX92S-Transmission-Line-Speakers.jpgJordan JX92S Transmission Line Speakers6848 viewsPair of Jordan JX92S fullrange drivers in a solid oak loudspeaker enclosure. The enclosure is the MLTL 48 transmission line design with a slightly smaller cross-sectional area. More details and pictures are available at my site.
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K-12G-Tube-Amp-Kit-S5-Electronics.jpgS5 Electronics K-12G Tube Amplifier Kit6836 viewsA completed K-12G Tube Amplifier Kit by Jason Sartor from Temple Arizona. The kit uses 10GV8 tubes and is housed in a nice looking DIY enclosure.
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6SN7-6L6-Tube-Amp-2.jpg6SN7-6L6 DIY Tube Amplifier6828 viewsThis amplifier uses a Williamson front end and phase splitter, with an ultralinear output stage. The valve lineup for each channel is a 6SN7 as first amplifier and phase splitter, followed by another 6SN7 driving a pair of 6L6s. Bias is set by active semiconductor current sinks. The 400V HT is generated by a double anode diode (5R4) driving a choke input filter. The audio output transformers are Hammond Manufacturing 1620s. Conservative rating of 20W per channel.
Schematic: Williamson 6SN7 - 6L6 (KT66) Tube Amplifier
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Jean-Hiraga-Super-Class-A-Amp.jpg58W Jean Hiraga Super Class-A Amplifier6818 views58W version of the Jean Hiraga "Super Class-A 30W" Amplifier. This version uses a higher rail voltage and Toshiba 2SA1943 and 2SC5200 transistors. For full details, see the Jean Hiraga's Super Class-A Amplifier Project page.
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FinishedInide.JPGOP Amp Preamp - inside the case6813 viewsOn the test bench for a short run-in period. The lids off waiting for smoke. No smoke but on the first start there was a minor fault. I have been listening to the preamp for two hours now and found it adds nothing to the sound (as a preamp should) and extends control with volume and balance adjustment. The yellow caps are 0.47 uF polypropylene metal film. Full details are available for this project at: DIY Op Amp based Preamplifier Project.
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DIY-Record-Player.jpgDIY Record Player using Dual 701 Motor6782 viewsNandor built a stacked plywood plinth and a magnetically stabilized tonearm to go with his direct drive motor assembly from a vintage Dual 701 record player.
See the DIY Record Player project page for full details.
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S-5-Electronics-K-12-Tube-Amp-Kit.jpgS-5 Electronics K-12 Tube Amplifier Kit6781 viewsRear view of my build of a S-5 Electronics Tube Amp Kit. The enclosure is made from MDF and painted with a high temperature resistant black paint. The back holes are just an air intake for the fan.
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DIY-HiVi-SP10-Subwoofer.jpgDIY HiVi SP10 Subwoofer6776 viewsDIY subwoofer using the HiVi SP10 10" driver in a vented (bass reflex) enclosure. A O-Audio 500 Watt plate amplifier was used. See the DIY HiVi SP10 Subwoofer Project page for full details.
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SV101783.JPGOpen Baffle Speakers - Front6770 viewsI had a very large sheet of 18mm particle board which had been sitting around for years. Also a pair of titanium domed tweeters and 2" domed mid-range surplus. What to do with them? With the addition of a pair of cheap but very robust 10" woofers and a 2nd order Xover (600Hz & 3.5kHz) I thought a may knock-up a pair of OBs.
I allowed one day to build these from scratch and with the assistance of some massive angle brackets and a few meters of darcon here is the result. That total height and depth of the speakers is covered in two thick layers of darcon leaving only the woofer rears bare.
The woofers are stiff and require many hours of play to get them to full performance. But the speakers have an excellent sound stage bright mids and highs. Bass is OK but not deep.
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DIY-TDA2050-Mini-Gainclone-Chipamp.jpgTDA2050 Hi-Fi Chip Amplifier (chipamp)6739 viewsInside view of my "Mini Gainclone" - a TDA2050 Hi-Fi Chip Amplifier (chipamp). Output is about 25W and the amplifier is built on a protoboard. The power supply contains a 120VA torroidal transformer, 10,000uF capacitors and generally follows the "snubberized" gainclone power supply design. For full details, see the DIY TDA2050 Hi-Fi Chip Amplifier project page
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Jordan-JX92S-Transmission-Line-Loudspeakers.jpgJordan JX92S Transmission Line Loudspeakers6736 viewsThe Jordan JX92S fullrange drivers in solid oak MLTL cabinets. These sound great. See my site for more details.
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