From recommendations from several people i've now moved onto serious thoughts to build the Tubelab SPP amplifier.
http://tubelab.com/designs/tubelab-spp/
Please keep posts only about the Tubelab SPP amplifier, the recommended components, as the design gives in the parts list.
Your thoughts, suggestions, experiences and cases to use, are welcome but based only on the original design http://tubelab.com/designs/tubelab-spp/parts-list/
I'm based in southern europe, so i would like to try and source components etc from the least amount of sources, to avoid courier costs and import duty.
I'm aware of these sources: -
https://www.rapidonline.com/ https://primarywindings.com/ https://www.digikey.co.uk/ https://eu.mouser.com/
http://tubelab.com/designs/tubelab-spp/
Please keep posts only about the Tubelab SPP amplifier, the recommended components, as the design gives in the parts list.
Your thoughts, suggestions, experiences and cases to use, are welcome but based only on the original design http://tubelab.com/designs/tubelab-spp/parts-list/
I'm based in southern europe, so i would like to try and source components etc from the least amount of sources, to avoid courier costs and import duty.
I'm aware of these sources: -
https://www.rapidonline.com/ https://primarywindings.com/ https://www.digikey.co.uk/ https://eu.mouser.com/
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UK? As it’s unregulated just check the voltages (such as the heaters). UK mains 230Vac +/-10%, mine is normally 245Vac so worth checking the knock on impact.
First of a 5 or 6 part SPP build series starts here: https://wallofsound.ca/audioreviews/amplification/diy-el84-amp-update/
All other parts in the series (in excruciating detail) are on the same site, just look around a bit.
S.
All other parts in the series (in excruciating detail) are on the same site, just look around a bit.
S.
The A.C. here is 240Vac, the +/- i'm not sure about, so it'll definitely have to be aware of these factors.
The first step is to decide what you final goal is for presentation. Will the tubes be on top of a plate, and transformers on top, like the classic amps?
The quality you are aiming for will influence transformer choices. To make something that is presentable, and safe, is the main part of the effort in the build.
Many have used Toroidy transformers, which are a great price for the quality, but to make them presentable they really need to be the potted versions, which add a big chunk to the price.
The quality you are aiming for will influence transformer choices. To make something that is presentable, and safe, is the main part of the effort in the build.
Many have used Toroidy transformers, which are a great price for the quality, but to make them presentable they really need to be the potted versions, which add a big chunk to the price.
OldHector, yes i'll try for the classic amp look with them on top. Safety will be a priority.
Some nice looking transformers here: -
https://primarywindings.com/mains-t...ce=laptop&1091_product_cat[0]=61&1091_paged=4
Will check out Digikey UK and Mouser EU.
Lots of things to check and double-check
Just checked and it appears the 'Schematic' for the Tubelab SPP has been removed from their web site.
http://tubelab.com/designs/tubelab-spp/schematic/
Might anyone have this available?
http://tubelab.com/designs/tubelab-spp/schematic/
Might anyone have this available?
Look here
There are different versions of R3 (power supply)
Also, please note Steve Morley's improvement for the bias.
https://www.diyaudio.com/community/threads/easy-diy-tube-amp.384618/post-6983166
Thanks for the information. I will try and keep the original build components and go from there
Stephe over at skunkie designs is in the process of documenting a mono bloc SPP build. Schematic and probably somewhat different parts list available there too.
https://www.skunkiedesigns.com/tubelab-spp-clone
https://www.skunkiedesigns.com/tubelab-spp-clone
There is a long running thread on the SPP here:
https://www.diyaudio.com/community/threads/tubelab-simple-p-p.148694/
The schematic in post #9 is correct. The original was lost back in 2009 when my computer crashed, and the web site was hacked within a few weeks of moving it to a new hosting company. The web site was restored from a backup that was made before the SPP was launched.
https://www.diyaudio.com/community/threads/tubelab-simple-p-p.148694/
The schematic in post #9 is correct. The original was lost back in 2009 when my computer crashed, and the web site was hacked within a few weeks of moving it to a new hosting company. The web site was restored from a backup that was made before the SPP was launched.
Thanks Steve, i've already ordered the PCB's from Tubelab, so i've made my decision, but i'll take a look at Skunkie designs....
PCB's ordered. Many thanks for the SPP link, i'll be seeing that a.s.a.p. I'll download the Cct in post #9, it's always nice to have a circuit diagram to see what's what.
Very useful videos from Skunkie Designs on her build of the Tubelab SPP
Tubelab Monoblock: Power Supply and Voltage Test.
Tubelab Monoblock: Basic Layout and Parts.
Tubelab Monoblock: Initial Fab and Final Layout.
But i must admit the work that George (Tubelabs) has done with his design, parts list, images etc etc are top notch!
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Thanks, I hope to get the next video up this week, have been waiting on some parts 🙂
I know that feeling.. mouser transformer backordered since 20th.. so much for quoted 10 days backorder time. Even the 3 weeks backorder time now showing has expired.
@calpe when you order check the the stock isn't in single digits and it pays to order one or two more in case you pop/burn any (less likely if it's a known design with known components). Don't forget the load resistors to load up the output transformers without speakers 🙂
I always order extra resistors and other small/cheap passives in case I screw up while building 🙂