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Old 28th May 2013, 05:36 AM   #5151
bonzo15011978 is offline bonzo15011978  Italy
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Location: Italy, Milan
Quote:
Originally Posted by dady View Post
Italian Flag, A baby preamp for babies. Very good taste!
Thank you Esteban!
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Old 28th May 2013, 02:39 PM   #5152
oobly is offline oobly
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Finally put the finishing touches on my own design instrument preamp. I'm no carpenter, so the case has some flaws, but she sounds great
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Old 29th May 2013, 12:06 PM   #5153
mhouston is offline mhouston  Australia
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Quote:
Originally Posted by oobly View Post
Finally put the finishing touches on my own design instrument preamp. I'm no carpenter, so the case has some flaws, but she sounds great
Some nice fresh ideas are here. I like the idea of the partly hidden, angled tubes.
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Old 1st June 2013, 03:29 AM   #5154
devilsindetails is offline devilsindetails  Canada
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Two everyday systems actually....

Second pic is my SE flea-powered (6GW8 x 2 and EZ81) simple straight-forward 3 tube utilitarian amp which I reclaimed and renewed...about 3 watts p/c output. Easily drives my Wharfedale OB SFB/3s (also reclaimed and restored) to satisfactory levels.

First pic is my Motorolla PP 6V6 output based 3-channel amp also reclaimed and restored...about 9 watts p/c output...I've used this to drive less sensitive loudspeakers in my stable ie: Quad ESL57, Bozak B-4000s and Sony APM 22ES.


Both pretty modest by the high standards of some of the foregoing builds here but excellent learning and listening tools for me as I ponder my own from the ground-up build with reclaimed everything! OK, well maybe not reclaimed caps, resistors and wire but my electronics environmental sensibilities (and my thin wallet) compel me to re-utilize whatever I can salvage.
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Last edited by devilsindetails; 1st June 2013 at 03:32 AM.
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Old 1st June 2013, 05:23 PM   #5155
opcom is offline opcom  United States
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lately.. so sad, my hi-fi is in pieces, but I'm using tube type PC speakers I made with 70L7's. Transformer coupled in and out. They need a gain stage before the 70L7 as the volume is low. These are not hi-fi at all, but just a fun exercise.

Everything except the tubes, including the higher wattage resistors, are inside the plastic cabinets, but there are three 3/8" holes above those, and three similar holes at the rear bottom of the cabinets. The convection cooling is sufficient. The tube socket wiring comes out through the port in the cabinets.

If I have a complaint is is the inefficiency of those speaker drivers. This would be better at filling the area with sound with a simple un-pretentious 2-watt 'table radio' type 4" paper cone speaker in each box.
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Last edited by opcom; 1st June 2013 at 05:38 PM.
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Old 1st June 2013, 05:57 PM   #5156
opcom is offline opcom  United States
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Mornings are filled with sound from a Philco 50-1720 console via 5W from a 50C6 and 8" full range speaker. A unique feature is one-knob bass+treble control. In the middle is flat, CW and CCW boost either bass or treble, Nicer than a simple tone control.

If nothing else everyone should feel great about their amps considering what's being listened to here these days. I have better amps but until the living room can be cleared of disorder, none of it can be used.
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Old 2nd June 2013, 07:03 PM   #5157
steve shiels is offline steve shiels  United Kingdom
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In the lounge there is a px4 (mazda version)based amp, drivers are by cossor 41mp
in the music room, a px25 based amp with the cossor 41mtl driving,

the px 25 amp is due to be rebuilt later in the year, I'm in the process of making an amp based on the mazda p650 output triode.
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Old 2nd June 2013, 09:44 PM   #5158
cengclimbing is offline cengclimbing
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Default Phono Preamp - Just Finished

This started life as simple phono stage to take the place of my K&K while it was undergoing a few upgrades and a chassis rework.

It turned into this... (Darn thing just sounded better and better with every upgrade)

S&B TX103's -> Hagerman Bugle -> Aikido Cathode Follower

Metal Work is from Mike at KM Audio Chassis, I did the Ebony and mirror polish on the case.

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Old 3rd June 2013, 04:13 PM   #5159
M Gregg is offline M Gregg  England
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Quote:
Originally Posted by oobly View Post
Finally put the finishing touches on my own design instrument preamp. I'm no carpenter, so the case has some flaws, but she sounds great
Nice ideas,

Just for interest..if you want to fill the couple of flaws in the wood try mixing some of the same wood sawdust into wood glue and use it as a filler..the colour should match..

Regards
M. Gregg
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Old 4th June 2013, 01:25 AM   #5160
hotwind is offline hotwind  China
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Default And this is hand-made systems

All DIY```
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Last edited by hotwind; 4th June 2013 at 01:44 AM.
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