DIY Audio Projects Photo Gallery
 NEW    Bruce Heran outlines the details and construction of his simple DIY 6DJ8 (ECC88) Tube Hi-Fi Headphone Amplifier Project.

DIY Audio Projects Photo Gallery


[ Gallery Home | Upload Photo | Recent Uploads | Most Viewed | Search ]

Most viewed
6DJ8-6AS7-OTL-HP-Amp-Sanguine.jpg
6DJ8-6AS7-OTL-HP-Amp-Sanguine.jpgSanguine - 6AS7 OTL Headphone Amplifier1618 viewsThe power supply and amp section are on two die-cast Al bases. A Sophia Mesh Plate Princess 274B rec. tube does the rectification. The PS has its own power filter to reduce EMI\RFI and the mains cable is choked. The power transformer is Hammond and the 20H choke is Hammond also and these are both isolated from the chassis by rubber grommets to control vibration. The 6AS7 power tube is NOS Winged "C" Svetlana and a NOS Tesla E88CC gold pin for the driver and is directly coupled. XLRs connect the HT and AC filament current to the amp section. A single 6.5mm input upfront with dual headphone output. Attenuation is provided by an Alps Blue Velvet pot. Both enclosures are dampened with bituminous Al foil and the paint is Epoxy Enamel. The attenuator knob is 4 ounces of solid brass.

The Sophia Mesh Plate 274B rec. tube and a 4uf PIO Russian filter cap start the filtering network with seven stages of filtering and storage in all. There is no PCBs or shielded wire used in this amp to dull the sound. Wiring is all point-2-point and component-2-componet. Fine silver plated wire warp wire carries all the audio. The only caps in the amp are the output caps. WBT silver solder is used throughout.
6SN7-6V6-SE-Black-Lace.jpg
6SN7-6V6-SE-Black-Lace.jpgBlack Lace - SE 6V6 Amplifier1580 views“Black Lace” - an all Australian tube amplifier with tubes from the 60’s. Miniwatt: 6V6 black glass, 6SN7 and 5U4. Old school build with PIO caps, solder from the 70’s with copper and carbon film resistors. See the forum thread Black Lace - 6V6 power amp, old school for more information.

Mark Houston – retro-thermionic
lafleuraudio-X2-speaker.jpg
lafleuraudio-X2-speaker.jpgLafleurAudio X2 Speaker1570 viewsThe LafleurAudio X2 Speaker on display at the 2011 Salon Son & Image show.

The speakers use a heavily braced curved speaker enclosure in a 2.5 way design and the total weight is 55 lbs each. The nominal impedance is 4 ohms, sensitivity is 90dB and the frequency response is noted at 45Hz to 20kHz.

For more coverage from the show, Salon Son & Image 2011 show coverage thread.
6V6-Push-Pull-Amplifier.jpg
6V6-Push-Pull-Amplifier.jpgPush-Pull (PP) 6V6GT Tube Amplifier1565 viewsThis 6V6 amp was built following the DIY Push-Pull (PP) 6V6 / 6V6GT Tube Amplifier Schematic. Power Supply transformer and Output transformers are handmade in Argentina by NavasBaccino. I'd like to thank Brad S. for the help. The sound is amazing and clear, free of distortion.

Gabriel Rofrano, ARGENTINA

Video link

Oatley-K272C-Headamp-Kit.jpg
Oatley-K272C-Headamp-Kit.jpgOatley K272C JAN6418 tube based headphone amp kit1564 viewsIn this build I used bituminized aluminum foil to line the ABS plastic compact enclosures and switched 6.5 mm stereo phone jacks. Only with both source and headphone plugs inserted and the press button switched “on” at the rear will power flow. Wire-wrap wire has been used in the signal path and the battery health LEDs have been brought out to the front of the enclosure. The sound appears to have better bass than previous models but the tubes will ring if struck.

For more info, see the
K272C Oatleys JAN6418 tube based headphone amp\preamp
thread in the forum.

Mark Houston – retro-thermionic
Orangutan-O-96-Oscar-2-way-Speakers.jpg
Orangutan-O-96-Oscar-2-way-Speakers.jpgOrangutan O/96 Highly Sensitive Speakers1549 viewsThe Orangutan O/96 High Sensitivity Speakers on display at the 2011 Salon Son & Image show.

For more information, see our show coverage: Orangutan O/96 High Sensitivity Speakers.
Specimen-Little-Horn-Speakers-with-Fostex-FE108E-Sigma.jpg
Specimen-Little-Horn-Speakers-with-Fostex-FE108E-Sigma.jpgLittle Horn Speakers with Fostex FE108E Sigma Drivers1514 viewsThe Little Horn Speakers produced by Specimen Products on display at Salon Son & Image 2011. The Little Horn Speakers use the Fostex FE108E Sigma driver.

For more information about the Little Horn Speakers, see our coverage from SSI 2011: Specimen Products Little Horn Speakers.
Spin-Clean-Record-Washer-System-MKII.jpg
Spin-Clean-Record-Washer-System-MKII.jpgSpin-Clean Record Washer System (Mk II) Kit Contents1436 viewsHere are the contents of the new Spin-Clean Record Washer System (Mk II) which is available for $80US. We have completed a full review of the Spin-Clean LP Record cleaning system. The Spin-Clean record cleaner is fully manual and does a very thorough job of cleaning your records.

See the Spin-Clean Record Washer System (Mk II) review for more information about the Spin-Clean.

If you have any questions about the Spin-Clean, you can ask them in the Spin-Clean LP Record Cleaning System (Mk II) thread on the forum.
Class-D-SureElectronics-Amp-Inside.jpg
Class-D-SureElectronics-Amp-Inside.jpgClass-D Sure-Electronics Amplifier (Inside)1367 viewsThis is my first DIY Class-D amplifier. The amp is based on a $30 Sure-electronics module. The amplifier modules requires only a 30VDC high current power supply because into 4 ohm it can produce 100Wpc. The enclosure is an off the shelf 2U 19” rack mount type. The power supply has an 18-0-18V, 9A toroidal transformer. A 10A rec bridge, some snubbing caps and 30,000 uF of stage caps make up the power supply. Two selectable inputs provide direct connection to the amp module or connection via an Alp pot and 4 Oz brass knob. Very crisp sounding with good detail... See the forum thread Class D 100W power amp for more information.

Mark Houston – retro-thermionic
Class-D-SureElectronics-Amp.jpg
Class-D-SureElectronics-Amp.jpgClass-D Sure-Electronics Amplifier1342 viewsThis is my first DIY Class-D amplifier. The amp is based on a $30 Sure-electronics module. The amplifier modules requires only a 30VDC high current power supply because into 4 ohm it can produce 100Wpc. The enclosure is an off the shelf 2U 19” rack mount type. The power supply has an 18-0-18V, 9A toroidal transformer. A 10A rec bridge, some snubbing caps and 30,000 uF of stage caps make up the power supply. Two selectable inputs provide direct connection to the amp module or connection via an Alp pot and 4 Oz brass knob. Very crisp sounding with good detail... See the forum thread Class D 100W power amp for more information.

Mark Houston – retro-thermionic
Decware-inspired-EL84-amp.jpg
Decware-inspired-EL84-amp.jpgDecware inspired EL84 amp with attenuation1176 viewsThis is a Decware inspired EL84 power amp with attenuation. My twist was to make a it a EL84 SE UL (not triode). Also I upgraded the PS a little. One PS tweak was to use a Russian PIO 4uf cap as the first cap in the PS. Also the larger electros are all snubbed.

The inter-stage caps are Audio Note Tin foil, mylar and oil. The amp I called "Tamarisk" - just like how it sounds. The finished amp looks good and not too heavy. Sound is a big step up from my already great sounding 6V6 - Ozzie tube SE UL amp. On live classical every part of the music has a layer. There every instrument is heard in its own layer and decay, reveb etc also have their own layers.

Mark Houston – retro-thermionic

Forum Thread: http://diyaudioprojects.com/Forum/viewtopic.php?f=9&t=5385
6CY7-Stereo-Amplifier.jpg
6CY7-Stereo-Amplifier.jpg6CY7 Stereo Amplifier1061 views"This is a nice little low power stereo amp (1.3W/channel) based on the 6CY7 tube. The amp uses a Hammond power transformer and chokes and a pair of Edcor XSE10-8-5K output transformers. I have to say that it sounds really nice. There is just something about triode SE amps that nothing can beat. The peak clean power output is 1.3 watts RMS per channel (as determined from watching an oscilloscope). The 3dB frequency response is ≈48 Hz to 30 KHz."

Matt Renaud
Pacific Northwest, USA
Project Thread: http://diyaudioprojects.com/Forum/viewtopic.php?f=9&t=5222

6EM7-Single-Ended-Triode-Amp.jpg
6EM7-Single-Ended-Triode-Amp.jpg6EM7 Single-Ended Triode (SET) Amplifier961 views"This amplifier is based on a tube intended to drive the vertical deflection circuits in larger televisions, the 6EM7. It has two dissimilar triodes in one envelope. One is a high gain, low power unit intended as an amplifier or oscillator, and the other is a higher power unit intended to drive the magnetic deflection coils on the back of a CRT. At audio frequencies the combination is just what we need to build a nice little audio amplifier. One tube per channel. And there are many thousands of these tubes and tubes like them readily available today."

Matt Renaud
Pacific Northwest, USA

Project Page: http://diyaudioprojects.com/Tubes/6EM7-SET-Amplifier/


Forum Thread: http://diyaudioprojects.com/Forum/viewtopic.php?f=9&t=5134

DIY-6AS7-Tube-Headphone-Amplifier.jpg
DIY-6AS7-Tube-Headphone-Amplifier.jpgDIY 6AS7 Tube Headphone Amplifier720 viewsMy name is Laurie. I have been building and DIYing for 45 years now and happily will never stop. This tube headphone amp is from a thread in the Form.

The power connecting cable comes from a European Travel Iron I bought for $1.00 at junk shop. (220v/6A) They will be shortened when I find a perch for the amp and me. The sound is better than my ears have ever heard so I will be keeping this one for my retirement entertainment should such a time ever come. Wink It has worked from day one and continues to please me every time it is turned on. The tubes are JJ ECC88 / 6AS7 with a 5V4 rectifier tube. To spite it's small size the parts are quite easily accessed. I over built most components so it will outlast me I fear. The only change I anticipate may be the 6AS7 to a bottle neck glass to match the rectifier tube. I do have and use a 6080 tube, but i can tell no difference in sound. It will take more then a few hours of listening to get my ears better tuned.
   
614 files on 31 page(s) 31


DIY Tube Projects :: DIY Tube Amp Kits :: DIY Speaker Projects :: DIY Solid State Projects :: DIY IC / Opamp Projects :: DIY Phono Projects :: DIY Cable Projects :: HI-Fi Audio Schematics
© diyAudioProjects.com - Terms of Service - Privacy Policy