Primrose(SumR Audio) Toroid GB

[buzzforb]

We were quote a discounted rate based on a certain quantity. We have met the quantity in two VA rnages and are still short in two. I am hoping that it is a large enough order that the others will be accepted an ddiscount still applied. After getting all info, ill come back with final totals. It will not be too late to add at that point, if you wish to.

 

[buzzforb]

ok 800va good for ba2 do i need secondary?

You would need 18V secondaries to meet spec'd BA2.

 

[wirewiggler]

I am flexible on VA if it is easier 400 or 600, whatever works best .

Bill

 

[triode4]

Please revise mine to read:

triode4 - 2 x 1000VA 24 V x2 (For V2), 4 x 400VA 18 V x 2 ,15 V x2(for L'Amp SIT)

instead of:

triode4 - 2 x 1000VA 24 V x2 (For V2), 4 x 400VA 28 V x 2 ,15 V x1(for L'Amp SIT)

Sorry for the edit!

 

[buzzforb]

Please make changes to the Google Doc. It helps to serve as a check and balance. That is why i did not put in the secondary values.

 

[joesch1999]

Thanks very much to whoever added the secondary

 

[buzzforb]

Your welcome.

 

[PKI]

Looking at the sign up sheet.... Isn't it better to order 800VA instead of 600VA, it will lower the price for 800VA and make it easier for Buzz to order and you get 200VA MORE

 

[sts9fan]

Added to doc.

Any rough guess on prices? I do not see them on the site.

 

[billyk]

I guess I was not clear on the list... I updated the SS.
Thanks for all this buzzforb!!

 

[pcb121055]

Updated the SS. Willing to be flexible to improve group buy. Would be willing to go 800VA instead of 1kVA if needed. Thanks!

 

[joesch1999]

want to do f5 turbo needs 24 volt secondary's right I already switched it buz if i am wrong please correct it for me

 

[buzzforb]

Responded in other thread.

 

[pcb121055]

Buzz, would you consider the 50V panasonic caps from the first F5T group buy compatible with 32V secondaries? Too little headroom? Thanks!

 

[labjr]

Seems like it should be fine. Nelson uses 25 volt Pansonic caps with 18 volt secondaries in every F series amp with no problems .

 

[buzzforb]

I thnk it is fine. You have about 20% headroom. The first bank will get ittle turn on spije, but perhaps thermistoirs help eat that up.

 

[joesch1999]

What caps would be optimal with 32v secondarys 75v?

 

[buzzforb]

50V will be fine. 63V is optimal.

 

[pcb121055]

Thanks so much... SS updated with 32V

 

[buzzforb]

One added benefit of the thermistors in the PSU is that they absorb some of the initial turn on spike, sparing the caps that initial current/voltage hit.