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History of Sjöström SMD Gainclone


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Sun, 05 Dec 2004 09:02:00 . . . . peranders


Changes by last author:

Added:
= Order status =
The list is closed now. No more entries are accepted.

Pcb's have arrived 18th November 2004 and all pcb's are posted 19th November 2004.


==== Details and Instructions ====

This is the home of the group buy for the Sjöström SMD Industrial Gainclone PCB boards as discussed in the thread below. All specifications can be found in the first post.

Please, sign up if you feel this would be intersting. I give no garantees that this design is substantially better than my QRP01 or Peter Daniel's and BrianGT's project. This SMD project is only different and an another side of the coin. I'll hope though that I can create an industrial and high technological design using only "normal" parts. I'm very convinced already that this will be a successful project with interesting performance within the limitis for LM3886 and AD8620. The pcb's will be of "high-end" quality meaning that my pcb manufacturer delivers pcb's to two high-end companies... don't say which... This means only that the pcb's have high normal industrial quality, nothing more really.

More information can be found at the homepage of this project.

[QRP-02 Homepage]

Picture of the pcb [here].

* --------------------------------------------------------------------
This project is suitable for a newbeginner ONLY if you are handy with the soldering iron AND have the right tools. If you have a soldering iron with small tip and a good pair of tweezers it shouldn't be be a problem. I'm going to write down good tips about soldering and mounting parts. This isn't obvious for a newbeginner.
* --------------------------------------------------------------------


[Original Forum Thread]


=== Prototype status ===

2004-10-15 With MUR3020 diodes, 2 x 4700 uF heavy duty caps ELNA LPJ3, 200 VA, 2 x 24 VAC, buffer AD8620, otherwise according to the original design, this amp really sings. Reptile fast deep bass, snappy, firm, dry, warmth in the mids, razorsharp treble, very good "S"-sounds, simply a crystal clear sound.

Need I say that the amp has a silent turn-on and an equally silent turn-off?

Two more prototypes exist and the performance according to the builders is outstanding for being a Gainclone and pretty (more like very) good to an amp in general.

So far the prototypes work well and have not shown any bugs.

At the moment 6 stereo amplifiers work and all builders except maybe for one are very satisfied. He made a "Carlos modification" and then got satisfied.

Link here:
https://gainclone.com/phpBB2/viewtopic.php?t=546

Enrico is the latest builder and has done an exellent job! I'll hope he will post pictures of his amp.


==== Orders, payment ====
Deal is closed.


==== Prices ====

Please not that those prices below is based on the fact that 60-70 pcb's are actually ordered. If too many drops off I may be forced the adjust the prices a bit upwards.

||.||.||.||.||.||Registered||Registered||Registered||.||.||Registered||
||Pcb's||Sweden, SEK||Europe, EUR||Europe, USD||Europe, GBP||Europe, EUR||Europe, USD||Europe, GBP||.||World, USD||World, USD||
||1||61||8,8||11,7||5,8||16,3||21,7||10,8||.||12,5||22,5||
||2||122||16,9||22,5||11,3||24,4||32,5||16,3||.||25,0||35,0||
||3||172||23,1||30,8||15,4||30,6||40,8||20,4||.||33,3||43,3||
||4||222||29,4||39,2||19,6||36,9||49,2||24,6||.||41,7||51,7||
||5||283||38,8||51,7||25,8||46,3||61,7||30,8||.||55,0||65,0||
||6||333||45,0||60,0||30,0||52,5||70,0||35,0||.||63,3||73,3||
||7||383||51,3||68,3||34,2||58,8||78,3||39,2||.||71,7||81,7||
||8||433||57,5||76,7||38,3||65,0||86,7||43,3||.||80,0||90,0||
||9||483||63,8||85,0||42,5||71,3||95,0||47,5||.||88,3||98,3||
||10||544||76,3||101,7||50,8||83,8||111,7||55,8||.||110,0||120,0||
||11||594||82,5||110,0||55,0||90,0||120,0||60,0||.||118,3||128,3||
||12||644||88,8||118,3||59,2||96,3||128,3||64,2||.||126,7||136,7||
||13||694||95,0||126,7||63,3||102,5||136,7||68,3||.||135,0||145,0||
||14||744||101,3||135,0||67,5||108,8||145,0||72,5||.||143,3||153,3||
||15||794||107,5||143,3||71,7||115,0||153,3||76,7||.||151,7||161,7||
||16||844||113,8||151,7||75,8||121,3||161,7||80,8||.||160,0||170,0||
||17||894||120,0||160,0||80,0||127,5||170,0||85,0||.||168,3||178,3||
||18||944||126,3||168,3||84,2||133,8||178,3||89,2||.||176,7||186,7||
||19||994||132,5||176,7||88,3||140,0||186,7||93,3||.||185,0||195,0||
||20||1055||147,5||196,7||98,3||155,0||206,7||103,3||.||208,3||218,3||


== Order list ==

Dear user:

== A ==
Sign up how many boards you want and type of shipping.

== B ==
I'll send you a PayPal bill but swedes just pay the right amount into my bank account.

== C ==
You pay

== D ==
I acknowledge the payment

== E ==
I'll deliver

||E||D||B||B||C||C||A||A|| A || A ||
||_||Acknowledge||_||_||_||_||_||_||_||Shipping||
||Delivered P-A||Ack. P-A||Bill sent P-A||Bill amount P-A||Amount user||Date payment userYYYYMMDD||user||Country|| Boards+inductor || Regular Registered ||
||20041119 6 pcb||20041029 334SEK||OK||124SEK||334SEK||20041028||Saibot||Sweden||6|| Regular||
||20041119 4 pcb||20041101 222SEK||OK||OK||222SEK||20041029||hoktuna||Sweden|| 4 || Regular ||
||20041120 9 pcb||20041101 485SEK||20041101||483SEK||483SEK||20041031||sprawl||Sweden|| 9 || Regular ||
||20041119 2 pcb||20041101 122SEK||20041101||122 SEK||122 SEK||20041101||tonyk||Sweden|| 2 || Regular ||
||20041119 5 pcb||20041104 283SEK||20041102||283SEK||283SEK||20041101||lassewe||Sweden|| 5 || Regular ||
||20041119 2 pcb||20041103 122SEK||Has paid 20041101||122SEK||122SEK||20041101||kjellj||Sweden|| 2 || Regular||
||20041119 2 pcb||20041103 122SEK||Has paid 20041103||122SEK||122SEK||20041103||Frasse||Sweden|| 2 || Regular ||
||20041119 4 pcb||20041103 222SEK||Has paid 20041103||222SEK||222SEK||20041103||frejo||Sweden|| 4 || Regular ||
||20041119 2 pcb||20041103 122SEK||Has paid 20041103||122SEK||122SEK||20041103||MichaelA?||Sweden|| 2 || Regular ||
||20041119 2 pcb||20041103 122SEK||Has paid 20041103||122SEK||122SEK||20041103||sotarn||Sweden|| 2 || Regular||
||20041119 2 pcb||20041109 122SEK||20041105||122SEK||122SEK||20041109||Mattiasostklint||Sweden|| 2 || Regular ||
||20041119 6 pcb||20041029||OK||OK||333SEK||20041028||AndyB?||Norway|| 6 || Regular ||
||20041119 2 pcb||20041110 16.9EUR||20041105||16.9EUR||16.9EUR||20041110||shongi||Germany|| 2 || Regular ||
||20041119 2 pcb||20041031 16.9EUR||20041031||16.9EUR||16,9 EUR||20041031||roibm||Germany|| 2 || Regular ||
||20041119 4 pcb||20041101 19.6GBP||20041029||19.6GBP||19.6GBP||20041029||WYTCO0||UK|| 4 || Regular||
||20041119 7 pcb||20041109 52.5EUR||20041105||52.5EUR||52.5EUR||20041109||SunShade?||Italy|| 7 || Regular ||
||20041119 2 pcb||20041105 25USD||20041102||25USD||25USD||20041102||Jimmy_The_Clown||USA|| 2 || Regular ||
||20041119 2 pcb||20041029 64USD||20041029||64USD||64USD||20041029||jamh||USA|| 6 || Regular ||
||20041119 2 pcb||20041103 25USD||20041103||25USD||25USD||20041103||eeehaah||USA|| 2 || Regular ||
||20041119 6 pcb||20041109 63.3USD||20041101||63.3USD||63.3USD||20041103||rentiap||USA|| 6 || Regular ||
||20041119 2 pcb||20041112 25USD||20041111||25USD||25USD||20041111||greatestbestest||USA|| 2 || Regular ||
||20041119 2 pcb||20041103 90USD||20041103||90USD||90USD||20041103||Enrico ||Singapore|| 8 || Registered ||
||No||Ack. P-A||20041102||19.6GBP||Amount user||Date payment userYYYYMMDD||nathwasere||UK|| 4 || Regular ||
||||||||||||||||||||This list is closed now and no more entries are accepted. Pcb's are ordered and everbody have got them.||
||||||||||||||||.||.||.||
||No||Ack. P-A||Bill sent P-A||Bill amount P-A||Amount user||Date payment userYYYYMMDD||user||Country|| ?? || Regular Registered ||
||E||D||B||B||C||C||A||A|| A || A ||
||||||||||||||||.||.||.||
||||||||||||||.||Totals boards||91 || ||