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Old 5th May 2013, 12:39 PM   #111
diyAudio Member
 
Join Date: Jun 2010
Location: south of england
Default 6p3p

The speakers are Mark Audio Alpair 7, in a cabinet called the frugal horn mk 3,
they have a big following here on diyaudio.
A single 4" full range speaker in a kind of back loaded horn, a great speaker for a first build, they have there limitations as with most speakers, but with certain kinds of music they sound quite amazing, very natural.
Problem for me is i listen to a lot of different kinds of music, so my reggae and electronic music, can lose a little of that impact i desire, but listen to some jazz, latin or some folk music on these, they really shine.
I,m really enjoying listening to Jorge Ben a Brazilian artist on this amp and speaker combo at the moment .
Do you really think i could do no damage trying them 6v6's Bob, admittedly i'm not sure they even work, my guitar amps been f**ked for years, but would be nice try.

Scratch
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Old 6th May 2013, 11:42 AM   #112
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Join Date: Sep 2007
Quote:
Originally Posted by mr scratch View Post
The speakers are Mark Audio Alpair 7, in a cabinet called the frugal horn mk 3,
they have a big following here on diyaudio.
A single 4" full range speaker in a kind of back loaded horn, a great speaker for a first build, they have there limitations as with most speakers, but with certain kinds of music they sound quite amazing, very natural.
Problem for me is i listen to a lot of different kinds of music, so my reggae and electronic music, can lose a little of that impact i desire, but listen to some jazz, latin or some folk music on these, they really shine.
I,m really enjoying listening to Jorge Ben a Brazilian artist on this amp and speaker combo at the moment .
Do you really think i could do no damage trying them 6v6's Bob, admittedly i'm not sure they even work, my guitar amps been f**ked for years, but would be nice try.

Scratch
In this amp yes you can drop in the 6V6 there but watch the plates (red = bad) and hook up speakers to the 4 ohm taps. Should be fine...but lower power output.

Cheers,
Bob
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Old 8th May 2013, 10:12 AM   #113
McGyver is offline McGyver  Poland
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Join Date: Nov 2004
Location: Poland
Quote:
Originally Posted by siliconray View Post
Hello all

Our partner developed a high quality low cost 6P3P SE kit for DIYers,

Features and spec:
5Z4P tube rectifier
6N1 preamplifier
6P3P power amplifier
Output Power 7Wx2
Load: 4Ohm or 8Ohm
Silkscreen stainless steel + wood enclosure

Part List
Power supply transformer 260v*2 6.3v 5v 3.15v*2
Output transformer 3.5k: 4 8 *2
Power supply choke coil 5H*1
Enclosure *1
Enclosure foot *4
RCA connector for input *2
Output connector *6
Power jack *1
Power cable *1
Power switch *1
Potentiometer 100K*1
Voice knob *1
Shuguang 5z4p new in stock *1
Shuguang 6n1 new in stock *1
Shuguang 6p3p new in stock *2
8Pin tube socket *3
9pin tube socket *1
47uf/400v *1
330uf/450v *1
22uf/400v *1
470uf/50v *2
0.22uf/160 *2
1k *2
47k *2
330 *2
470k *2
22k *1
220k *1
Shielded cable 30cm
Cannula 15cm
Soldering cable 3m
3mm 4mm screw 16set each
Schematic 1
Instruction Manual 1

The link:
6P3P Single Ended Tube Amplifier Kit

110V and 220V are both available

Photos:
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Price: $136 for retail. PM for multiple orders or group buy. Package weight about 9-10kg, the more the order, the lower average shipping cost.
Hello Siliconray, is there possible to buy an chassis only, one or two pieces? If so, how much it will cost, and how much is shipping to Poland?
regards
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Old 8th May 2013, 06:18 PM   #114
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Join Date: Jun 2010
Location: south of england
Well, i bit the bullet and have now swapped in some 6v6gt's i had from another amp, thanks Bob, your right they seem to work fine... only wish i could say that there's a marked difference in the sound, to be quite honest its hard to tell, if there is its really subtle, definitely not worse.
Never mind was worth a try, at least i know they can work in this amp, and there not exactly branded tubes, probably on there last legs too.
Think i will have to try a new rectifier tube next , and swap out those caps for something a little better.
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Old 8th May 2013, 07:36 PM   #115
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Join Date: Sep 2007
Quote:
Originally Posted by mr scratch View Post
Well, i bit the bullet and have now swapped in some 6v6gt's i had from another amp, thanks Bob, your right they seem to work fine... only wish i could say that there's a marked difference in the sound, to be quite honest its hard to tell, if there is its really subtle, definitely not worse.
Never mind was worth a try, at least i know they can work in this amp, and there not exactly branded tubes, probably on there last legs too.
Think i will have to try a new rectifier tube next , and swap out those caps for something a little better.
I like the Tung-sol 5881 old stock and a Tung-sol 6087 rectifier sound the best in this amp. If you want to get decent 6L6 tubes try 6L6WXT+ tubes from Russia they are fairly cheap and sound pretty good. Any of the 6L6 family tubes should do better in this circuit than the 6V6 although as you see the 6V6 works. Did you try the 4 ohm speaker tap with them?

Cheers,
Bob
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Old 10th May 2013, 12:47 PM   #116
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Join Date: Jun 2010
Location: south of england
Might have to try them Russian 6l6wxt's the price is on the right side and probably as good as any 6l6 as long as there stable, also looking at some alternatives on epay at the moment, but i'm not in any hurry.
Just ordered some diodes for that rectifier mod you recommend, sounds a good idea if it can make the rectifier more reliable.
Oh and yes i did try both taps, no noticeable difference in sound that i can note, i think the spec says there 5.2 ohm, maybe i should ask on the frugal horn forum what tap they use.
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Old 11th May 2013, 05:31 AM   #117
Pdwhitt is offline Pdwhitt  United States
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Join Date: Apr 2012
My 6p3p just arrived, well packed, shipped quickly by air. But I have a question on the main power transformer. Wires are red, black, red, black, green/yellow, blue, black, blue. I assume its green/yellow gnd, blue 300v, black gnd, and blue 300v. But i cant quite figure out the red, black, red, black onthe far left. Im guessing the red black is 110v. But do I just ignore the second pair of red black?
Click the image to open in full size.
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Old 13th May 2013, 06:10 PM   #118
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Join Date: Sep 2012
Location: wormerveer
Hey guys

I also got the amp.
And i took out the negative feedback.
The sound openend up. And i got more power.
Also the mod for the rectfier improved the sound.
And i am using sovtek kt66, liked the sound.

If you have a problem with humming or distortion check your rca inputs.
Mine were not good...

Dennis
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Old 15th May 2013, 12:46 AM   #119
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Join Date: Sep 2007
Quote:
Originally Posted by Pdwhitt View Post
My 6p3p just arrived, well packed, shipped quickly by air. But I have a question on the main power transformer. Wires are red, black, red, black, green/yellow, blue, black, blue. I assume its green/yellow gnd, blue 300v, black gnd, and blue 300v. But i cant quite figure out the red, black, red, black onthe far left. Im guessing the red black is 110v. But do I just ignore the second pair of red black?
Click the image to open in full size.
Take an Ohms reading on those red/black wires and report back... if you haven't figured it out yet.

Cheers,
Bob
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Old 15th May 2013, 01:04 PM   #120
Pdwhitt is offline Pdwhitt  United States
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Join Date: Apr 2012
Quote:
Originally Posted by bobrown14 View Post
Take an Ohms reading on those red/black wires and report back... if you haven't figured it out yet.

Cheers,
Bob
Bob,

The extra pair of red black seem to be identical to the first pair. If i connect 120v AC to the first pair of red black, the second pair reads 120 and all the other voltages (300, 6.3, 5, and 3.15) are correct. If i connect the second pair of red black to 120 wall outlet, then the first pair reads 120, and all the others again show correct voltages. So I guess I will not use the second pair of red black wires, and will secure them out of the way.

Thanks!
Paul
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