TSSA V1.6 docs and buyers list

[sonnya]

Hi all.

The TSSA V1.6 is the final production ready amp.

The component list for the amp is:

http://sitosite.dk/amps/TSSA V1.6 componentlist.xlsx

http://sitosite.dk/amps/TSSA V1.6 componentlist.xls

Schematic for the amp is:

http://sitosite.dk/amps/TSSA-01300712.pdf

The PCB layout as interactive PDF:

http://sitosite.dk/amps/TSSA-01080812-pcb.pdf

The assembly instruction will follow shortly.

I would prefer to deliver the modules with all SMT assemblied on the boards. I have tried to sell boards before without SMT assemblied and people did not get them made...

All buys should be mailed to audioparts@sitosite.dk

 

[franzm]

.xls please. Or pdf. Can't open .xlsx.

 

[sonnya]

.xls please. Or pdf. Can't open .xlsx.

I have added it above.

 

[mikelm]

Hi Sonny,

I'll take:

2 x boards bare
2 x boards with surface mounted components

please email me final price including post to UK

thx

mike

 

[sonnya]

TSSA V1.6 assembly guide.

TSSA V1.6 assembly guide

http://sitosite.dk/amps/TSSA V1.6 assembly and adjustment guide.pdf

 

[planet IX]

Sonny
there are a couple of resistors in the BOM named CMF55 with 0,5W... afaik CMF55 has only 0,25W and CMF60 is the equivalent with 0,5W. Is 0,25 sufficent?


Do you have a source for the transistors Q18, Q19?
While KSA1381ESTU is available at Mouser, KSC3503ESTU is stated as discontinued (it is still available in hFE1 D grade, but KSA1381 is only available in E grade...)

Boris

 

[sonnya]

Actually. You are right. The CMF55 is 0.25W.

Peak consumption is 0.5W But i use the 0.25W. Average power consumption with music at full power will be 170mW.

I have both transistors in stock. ~4000 each.

 

[sonnya]

Should i post 2 sets to you??

 

[planet IX]

Should i post 2 sets to you??

That would be great! I should have looked earlier for the devices...
Please tell me the price via PM.

Thanks, Boris

 

[sonnya]

Ok, you will get them for free.

Other who have got the kits as bare pcb or pcb with SMT assembled can just write it here and will get them for free.

KSC3503ESTU + KSA1381ESTU.

Also the new kits will be shipped with KSC3503ESTU + KSA1381ESTU. That includes also BARE PCB's and PCB with SMT assembled

 

[sonnya]

For all here in this thread.. I have made an error in the guide. Trimmer R22 should be turned CCW first before powering up.

After powerup bias is set by turning CW.

 

[Salas]

Clean short guide, Sonny. Thanks for adding that paper.

 

[Salas]

P.S. Are you a bit unhappy with the bass? Mentioning only great mids and highs in the guide. The analogous 2 stage p2p Nico like SSA has very good bass for instance in my experience. Or is it just against higher power, higher FB other amps of yours?

 

[sonnya]

The bass is fine. But it has mosfet sound over it. But compared to Audio Research VT100, i think it is equally good.

But i have made the powersupply more stiff since the test at Michael...

 

[Salas]

There is VT200 Mark I in a good friend's system with Harbeth SHL5s which are a manageable load for TSSA so I will have means to investigate too. Not imminent in the builds line, but it won't remain in the drawer either.

 

[sonnya]

There is VT200 Mark I in a good friend's system with Harbeth SHL5s which are a manageable load for TSSA so I will have means to investigate too. Not imminent in the builds line, but it won't remain in the drawer either.

Tomorrow we Will make a test on eggleston works and maybe on a set avalon Acoustics ...

More Will follow.

 

[Salas]

If its the Eidolon it took an FM Acoustics prosound genes amp to sing in an installation I did once after it was pushing the owner's Naim Nap 500 to stridency at high SPL times, not an easy speaker at all. TSSA will be great on 93dB+ 4 Ohm or 90dB+ 8 Ohm non quirky Z speakers IMHO.

 

[sonnya]

I think that at the moment, he is running them on the small pass amps...

But lets see.

The play well on the large JMLAB grand utopia.

 

[Samuel Jayaraj]

If its the Eidolon it took an FM Acoustics prosound genes amp to sing in an installation I did once after it was pushing the owner's Naim Nap 500 to stridency at high SPL times, not an easy speaker at all. TSSA will be great on 93dB+ 4 Ohm or 90dB+ 8 Ohm non quirky Z speakers IMHO.

Sorry to butt in here; but what if the output devices are doubled or single 16Amp 250Watt devices are used? Driver current may need to be increased slightly.

 

[sonnya]

I have tested it with single 16amp. This will lower the output impedance of about 40% but the gfs is also 4S instead of 2S... This means a doubling of the openloop gain.