diyAudio http://www.diyaudio.com/forums/gallery Wed, 27 Aug 2014 14:58:06 -0400 PhotoPost Pro 6.02 Inexpesnive 2-Way with Isodynamic Ribbon tweeter http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10221 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10221" target="_blank"><img title="VX65_I.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1501/thumbs/VX65_I.jpg" alt="VX65_I.jpg" /></a><br /><br />by: mhouston<br /><br />Description: A 6.5&amp;quot; HiVi woofer\mid and Isodynamic ribbon tweeter in a 20Ltr, ported enclosure. Vertical bracing and lined with bitumanised Al foil and Dacron (dampening). Simple 2nd order Xover at 2,350Hz. Lots of bass and goes down to 31Hz in my large listening room. Tweeters go past 22K (tested) Test very flat response. Sounds best with my DIY 300B tube amp. Cost under $400 to build. Sits on my stereo sub-woofers with their own Class D amp. mhouston Fri, 07 Mar 2014 19:14:40 -0500 Inexpesnive 2-Way with Isodynamic Ribbon tweeter http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10222 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10222" target="_blank"><img title="VX65_III.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1501/thumbs/VX65_III.jpg" alt="VX65_III.jpg" /></a><br /><br />by: mhouston<br /><br />Description: A 6.5&amp;quot; HiVi woofer\mid and Isodynamic ribbon tweeter in a 20Ltr, ported enclosure. Vertical bracing and lined with bitumanised Al foil and Dacron (dampening). Simple 2nd order Xover at 2,350Hz. Lots of bass and goes down to 31Hz in my large listening room. Tweeters go past 22K (tested) Test very flat response. Sounds best with my DIY 300B tube amp. Cost under $400 to build. Sits on my stereo sub-woofers with their own Class D amp. mhouston Fri, 07 Mar 2014 19:14:40 -0500 Inexpesnive 2-Way with Isodynamic Ribbon tweeter http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10223 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10223" target="_blank"><img title="VX_V.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1501/thumbs/VX_V.jpg" alt="VX_V.jpg" /></a><br /><br />by: mhouston<br /><br />Description: A 6.5&amp;quot; HiVi woofer\mid and Isodynamic ribbon tweeter in a 20Ltr, ported enclosure. Vertical bracing and lined with bitumanised Al foil and Dacron (dampening). Simple 2nd order Xover at 2,350Hz. Lots of bass and goes down to 31Hz in my large listening room. Tweeters go past 22K (tested) Test very flat response. Sounds best with my DIY 300B tube amp. Cost under $400 to build. Sits on my stereo sub-woofers with their own Class D amp. mhouston Fri, 07 Mar 2014 19:14:40 -0500 Sanguine, 6AS7 headphone amp with Sophia Mesh Plate 274B rec. tube http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10025 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10025" target="_blank"><img title="Sanguine2.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/Sanguine2.jpg" alt="Sanguine2.jpg" /></a><br /><br />by: mhouston<br /><br />Description: The 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 tranni is Hammond and the 20H choke is Hammond also. The 6AS7 power tube is NOS Winged &amp;quot;C&amp;quot; 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 bitumanised 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. I believe the great sound of this amp is due to the Sophia tube and the PIO cap. 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. All PS caps are snubbed with polypropylene caps and the output caps with Russina PIO caps.WBT silver solder is used throughout. The amp is is absolutely dead quiet. Through my Audio-Technica ATH700 Air headphones music is like I have never heard before. Harmonics are rich and deep, detail is fine grained and dynamics unlimited.This may well be the greatest piece of audio gear I have ever made. mhouston Sat, 25 Jan 2014 07:43:17 -0500 Sanguine, 6AS7 headphone amp with Sophia Mesh Plate 274B rec. tube http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10026 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10026" target="_blank"><img title="Sanguine3.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/Sanguine3.jpg" alt="Sanguine3.jpg" /></a><br /><br />by: mhouston<br /><br />Description: The 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 tranni is Hammond and the 20H choke is Hammond also. The 6AS7 power tube is NOS Winged &amp;quot;C&amp;quot; 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 bitumanised 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. I believe the great sound of this amp is due to the Sophia tube and the PIO cap. 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. All PS caps are snubbed with polypropylene caps and the output caps with Russina PIO caps.WBT silver solder is used throughout. The amp is is absolutely dead quiet. Through my Audio-Technica ATH700 Air headphones music is like I have never heard before. Harmonics are rich and deep, detail is fine grained and dynamics unlimited.This may well be the greatest piece of audio gear I have ever made. mhouston Sat, 25 Jan 2014 07:43:17 -0500 Sanguine, 6AS7 headphone amp with Sophia Mesh Plate 274B rec. tube http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10027 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10027" target="_blank"><img title="Sanguine4.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/Sanguine4.jpg" alt="Sanguine4.jpg" /></a><br /><br />by: mhouston<br /><br />Description: The 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 tranni is Hammond and the 20H choke is Hammond also. The 6AS7 power tube is NOS Winged &amp;quot;C&amp;quot; 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 bitumanised 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. I believe the great sound of this amp is due to the Sophia tube and the PIO cap. 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. All PS caps are snubbed with polypropylene caps and the output caps with Russina PIO caps.WBT silver solder is used throughout. The amp is is absolutely dead quiet. Through my Audio-Technica ATH700 Air headphones music is like I have never heard before. Harmonics are rich and deep, detail is fine grained and dynamics unlimited.This may well be the greatest piece of audio gear I have ever made. mhouston Sat, 25 Jan 2014 07:43:17 -0500 Sanguine, 6AS7 headphone amp with Sophia Mesh Plate 274B rec. tube http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10024 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/10024" target="_blank"><img title="Sanguine.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/Sanguine.jpg" alt="Sanguine.jpg" /></a><br /><br />by: mhouston<br /><br />Description: The 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 tranni is Hammond and the 20H choke is Hammond also. The 6AS7 power tube is NOS Winged &amp;quot;C&amp;quot; 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 bitumanised 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. I believe the great sound of this amp is due to the Sophia tube and the PIO cap. 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. All PS caps are snubbed with polypropylene caps and the output caps with Russian PIO caps.WBT silver solder is used throughout. The amp is is absolutely dead quiet. Through my Audio-Technica ATH700 Air headphones music is like I have never heard before. Harmonics are rich and deep, detail is fine grained and dynamics unlimited.This may well be the greatest piece of audio gear I have ever made. mhouston Sat, 25 Jan 2014 07:43:16 -0500 Paris Duo - 6EM7 monoblock power amp. http://www.diyaudio.com/forums/gallery/showphoto.php/photo/7372 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/7372" target="_blank"><img title="FinishedIII.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/FinishedIII.jpg" alt="FinishedIII.jpg" /></a><br /><br />by: mhouston<br /><br />Description: Building on the success of the Paris amplifier (dual mono construction) I was asked to build a pair of monoblocks. Paris Duo has a two stage power supply filter using a small choke and resistive network with large electrolytic capacitors. Tightly twisted wire-wrap wire feeds the signal to the first triode and the same wire connects to the speaker binding posts. The power transformer is rubber mounted to reduce resonance on the cast Al chassis. The finish is epoxy enamel paint with an acid etch primer. The tube compliment is a 5Y3 rectifier and Sylvania (NOS USA) 6EM7. A small Hammond choke and Edcore 10W output transformer are inside the heavy chassis. There is also a EMI mains power filter in the chassis and a choke on the power lead. The bottom of the chassis is drilled for cooling with a layer of bitumanised heavy Al foil to control resonance. Soft silicon feet secure the amplifier and also help provide resonance and vibration control. The sound is similar to the original Paris amp with an ultra clear mid-range, heavy in detail and good bass extension. In room testing proves a low 40hz tone with only a modicum of attenuation. Treble is on the sweet side rather then bright and is extended. An excellent sounding amp providing a touch over 2W of delivery. mhouston Tue, 14 Feb 2012 08:29:02 -0500 KT120 SE UL Bread Board amp (Be Bamp) http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5428 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5428" target="_blank"><img title="KT120_IIs.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/KT120_IIs.jpg" alt="KT120_IIs.jpg" /></a><br /><br />by: mhouston<br /><br />Description: This amp started out as KT88 SE UL. I added the KT120 and increased the idle current to 112mA. The amp is dead quiet and delivers close to 10W RMS into a 5.6 ohms load. A Bread Board amp with a difference. All wiring is underneath the bread board and OPTs housed in a attractive case. Big sound from an SE amp See: http://www.retro-thermionic.blogspot.com/ for more details. mhouston Fri, 30 Jul 2010 20:00:12 -0400 Fender Champ 5F1 Guitar 6V6 amp http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5427 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5427" target="_blank"><img title="MongrelChamp.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/MongrelChamp.jpg" alt="MongrelChamp.jpg" /></a><br /><br />by: mhouston<br /><br />Description: This is a three stage guitar amp based on the Champ 5F1 schematic. I added a chocke. Cotton coated wire is used throughout as hook-up with the original Jupiter hand made beeswax, paper and foil caps, 40 year old Australian made 6V6GT black glass and 12AX7. This amp is coupled to a vintage Jensen 12&amp;quot; speaker with Alnico magnet. I wanted to get close to the original Champ sound. Even the solder I used is 30 years old. See: http://www.mongreldogaudio.blogspot.com/ for more details. mhouston Fri, 30 Jul 2010 19:30:51 -0400 KT88 SE UL/Triode http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5426 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5426" target="_blank"><img title="KitAmpTopSmall.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/KitAmpTopSmall.jpg" alt="KitAmpTopSmall.jpg" /></a><br /><br />by: mhouston<br /><br />Description: Single End KT88 UL/Triode valve amp. I built this and a pair of Fostex FE208 based speakers for my son. 5W RMS See: http://www.retro-thermionic.blogspot.com for more details. mhouston Fri, 30 Jul 2010 19:18:57 -0400 6AS7/12AX7/JAN CBXL-5R4GY SET http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5425 <a href="http://www.diyaudio.com/forums/gallery/showphoto.php/photo/5425" target="_blank"><img title="KiSharnS.jpg" border="0" src="http://origin.dastatic.com/forums/gallery/data/1491/thumbs/KiSharnS.jpg" alt="KiSharnS.jpg" /></a><br /><br />by: mhouston<br /><br />Description: Hammond Power tranni and choke. Jensen copper, paper and oil caps, Edcor OPTs, United Electronics English tube and Mirbeu timber base. 3WRMS max, 12Hz -&gt; 50kHz. Best sounding amp I have ever built. Visit: http://www.retro-thermionic.blogspot.com/ mhouston Fri, 30 Jul 2010 09:40:55 -0400