Show us your flea-watts amps!
- Thread starter davidro
- Start date
jaymanaa
RIP 1961-2018
Indeed. :yes:
Hifidelity1
Member
I have 2 units: Bottom unit is Philips AG9016.Top unit is 807 in Triode Mode
1)Philips AG9016—2 WPC—Here is a good link to some info about this great little integrated:
http://www.audiokarma.org/forums/showthread.php?t=70653
2)807 SE connected in Triode Mode—Commissioned AbraxsAudio (Jeff Larson) to build this unit in 2004. 807 pair is NOS RCA JAN perfectly matched. The Sylvania 6LS7 round plate in the front is the input/driver tube. A vintage RCA 5V4G provides the power. We managed to achieve 1.7 WPC. The 807 handles a bit over voltage without breaking a sweat. It sounds MUCH larger than the watts would indicate. The response is ruler flat from 30Hz to 30 KHz. It sounds great. It handles about everything I toss at it with ease (horn loaded bookshelves).
1)Philips AG9016—2 WPC—Here is a good link to some info about this great little integrated:
http://www.audiokarma.org/forums/showthread.php?t=70653
2)807 SE connected in Triode Mode—Commissioned AbraxsAudio (Jeff Larson) to build this unit in 2004. 807 pair is NOS RCA JAN perfectly matched. The Sylvania 6LS7 round plate in the front is the input/driver tube. A vintage RCA 5V4G provides the power. We managed to achieve 1.7 WPC. The 807 handles a bit over voltage without breaking a sweat. It sounds MUCH larger than the watts would indicate. The response is ruler flat from 30Hz to 30 KHz. It sounds great. It handles about everything I toss at it with ease (horn loaded bookshelves).
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jaymanaa
RIP 1961-2018
I have one of those little Phillips jobs, but have not done anything with it yet. Nice to hear a good review on it though. Makes me look forward to getting around to it. When I saw it, I knew it was way to cool to pass up. I also have some 807 single ended UL Heyboer iron sitting in a cabinet waiting patiently. Ruler flat 30 to 30 works for me any day of the week. Very nice!
jaymanaa
RIP 1961-2018
Do you have the cabling for that Phillips? I remembered it because of the "funny" connections.
Hifidelity1
Member
jaymanaa--It has been more than 15 years ago that I found this unit at a flea market (paid 15 clams) I could not find the original Philips connectors (before EBAY) so I added RCA inputs for turntable and speaker outs. See back panel photo. Today I could only find a few scribbled notes.
As you can see, looking at connector at PHONO stage (reading holes left to right), I found that input 1-3-5 are ground but cannot remember which is for left ground-right ground and stereo ? I found that NO.2 is LEFT+ and NO:4 for Right+ !!! (I was only interested in turntable connections). My notes say I looked into the tape connector, I think I was interested in CD player for that one. At the tape connector I believe #1 (reading left to right) is LEFT +, NO:2 Right + and NO:3 Ground and use this Ground for both LEFT and RIGHT?? Then I had question marks so never really made the change. As you can tell I was doing this by the seat of the pants. A little later I changed my main system to Scott 299C and Thorens TD124 and never looked back as far as phono playback. With the 807 project completed it became a bedroom/reading room system with only CD player connected. Awesome sound---when used as almost near-field.
As you can see, looking at connector at PHONO stage (reading holes left to right), I found that input 1-3-5 are ground but cannot remember which is for left ground-right ground and stereo ? I found that NO.2 is LEFT+ and NO:4 for Right+ !!! (I was only interested in turntable connections). My notes say I looked into the tape connector, I think I was interested in CD player for that one. At the tape connector I believe #1 (reading left to right) is LEFT +, NO:2 Right + and NO:3 Ground and use this Ground for both LEFT and RIGHT?? Then I had question marks so never really made the change. As you can tell I was doing this by the seat of the pants. A little later I changed my main system to Scott 299C and Thorens TD124 and never looked back as far as phono playback. With the 807 project completed it became a bedroom/reading room system with only CD player connected. Awesome sound---when used as almost near-field.
jaymanaa
RIP 1961-2018
I'm pretty sure I have the original manual for mine. I can't remember for sure, but it may be in German. I know one easy place to look where it may be. I'll take a look see here when the dryer buzzer goes off downstairs.
jaymanaa
RIP 1961-2018
On a funny note, I've been building a pair of triple parallel 2A3s monos with a separate power supply chassis. I got the power TX for the just the signal current for the 2A3s yesterday and just weighed it. It came in at 43 pounds even, which is going to put this power supply chassis over the 100 pound mark by my best guess. The main input choke is 16 pounds, and the two individual chokes for each channel are 5 pounds x 4. Then there's capacitors, filament transformers, front end signal current transformer, and the chassis itself. Snikies! This is what happens when you go through the Douglas school of SET power supplies. 
MickeySmile
Well-Known Member
Thank you StevenZ for your kind words. For the PT. I use the Chicago PHC85, Chicago chokes, and James transformer for output. On my friend set I use the same Chicago PT and chokes, the output is Electra print ( silver on secondary wind).
The same circuit on both sets but my friend set blows my set away.
If somebody is going to build then should spend good money on the output transformer. :yes:
Thank you!
Thank you!
StevenZ
Texas or nothin'
On a funny note, I've been building a pair of triple parallel 2A3s monos with a separate power supply chassis. I got the power TX for the just the signal current for the 2A3s yesterday and just weighed it. It came in at 43 pounds even, which is going to put this power supply chassis over the 100 pound mark by my best guess. The main input choke is 16 pounds, and the two individual chokes for each channel are 5 pounds x 4. Then there's capacitors, filament transformers, front end signal current transformer, and the chassis itself. Snikies! This is what happens when you go through the Douglas school of SET power supplies.
This sounds like it's going to be insane. Do you plan to start a thread about these? I'd love to see it.
StevenZ
Texas or nothin'
Mickey, thanks for sharing the details. Good output transformers are key. What speakers do you use with them? I've got a warehouse in Houston and will be heading up there in about a month. Perhaps we can meet up and do a little listening if you're up for it.
Cheers,
Steven
Cheers,
Steven
Akai M7 mono blocks
These are 4wpc
class A Single Ended Pentode
Tube rectified
EL84
12AX7
Stamped leather
Black tolex
Repurposed wood grain
pretty much start to finish
http://www.audiokarma.org/forums/showthread.php?t=598930
These are 4wpc
class A Single Ended Pentode
Tube rectified
EL84
12AX7
Stamped leather
Black tolex
Repurposed wood grain
pretty much start to finish
http://www.audiokarma.org/forums/showthread.php?t=598930
Last edited:
BrokenHill
Well-Known Member
Are sure those aren't Buffalo gnat watt amps, they look to beefy to be Flea powered amps.
Very nice mono amps.
Very nice mono amps.
BrokenHill
Well-Known Member
The wood frame around these Roberts 770X mono amps is nothing real fancy I just needed something that was simple to put
together fast to house these flea powered amps for now, it actually worked out better then I thought.
Recently I found that if I turn the volume control knob up to about 3/4 turn and connect my SAE XXX pre-amp to the 770X inputs
I got a lot better sound with much more bass even when the bass control is set flat on the SAE pre-amp, I am not sure how well
other pre-amps would work like this, the SAE XXX pre-amp is a very clean sounding unit with very low distortion.
The Halfer below the SE tube mono amps is only for when I need that little extra power, I use the 770X mono amps most of the time.
together fast to house these flea powered amps for now, it actually worked out better then I thought.
Recently I found that if I turn the volume control knob up to about 3/4 turn and connect my SAE XXX pre-amp to the 770X inputs
I got a lot better sound with much more bass even when the bass control is set flat on the SAE pre-amp, I am not sure how well
other pre-amps would work like this, the SAE XXX pre-amp is a very clean sounding unit with very low distortion.
The Halfer below the SE tube mono amps is only for when I need that little extra power, I use the 770X mono amps most of the time.
illinoisteve
Super Member
Would just one of those, as a mono amp, be very expensive to build? And if I wanted to do that, how would I find a schematic, parts list, etc. to get me started?
