Best OPT for EL84 PP

[youknowyou]

hi everyone!

Long time

Ok, I have a EL84 ANkit with stock OPT ANK Audiokits - L1 EL84 Integrated Amplifier I want to put into my amp better OPT. So far, I see Tango as a serious contender. Tamura dont offer el84 OPT, hashimoto neither. any suggestions! looking for the pair of opt under 800 USD!

 

[H713]

That kit appears to use some very nice transformers, and they look suspiciously like a Z565. I doubt switching to a high-end Tango transformer would yield much of an improvement. Are you unhappy with the sound of your amplifier?

 

[rayma]

they look suspiciously like a Z565. I doubt switching to a high-end Tango
transformer would yield much of an improvement.

Agreed, put your money elsewhere.

 

[artosalo]

The output stage is pentode connected.
The overall performance could be improved with an OPT that has UL-taps. Then less GNFB is needed as well.
This could be a good choice as an OPT:

Softone RX-30-8 Push-Pull Audio Output Transformer

 

[Tjj226]

The problem is that for 800 bucks, you could just about build yourself a totally different amp using lundhal transformers.

Im looking at your profile and seeing a lot of really high efficiency speakers. Why not just build a 300b single ended amp?

 

[Herrmann]

hi everyone!

Tamura dont offer el84 OPT, hashimoto neither. any suggestions! looking for the pair of opt under 800 USD!

How about Hashimoto HWC-30-8? Link to Hashimoto .

 

[Alllensoncanon]

Noticed that you have 86db speakers. You could use a bit more output power in the amp so it doesn't have to work on the top as much. Changing transformer won't get you that, an EL34 PP can.

 

[youknowyou]

That kit appears to use some very nice transformers, and they look suspiciously like a Z565. I doubt switching to a high-end Tango transformer would yield much of an improvement. Are you unhappy with the sound of your amplifier?

ive asked ANK if the OPT in the kit are from Triode z565. lets see if they are, I wont bother upgrading the OPT

I love the sound of the amp, just curious if I could get even better sound

thanks

 

[DAK808]

I believe there OPT are mostly from China in the standard kits.

 

[kodabmx]

hi everyone!

Long time

Ok, I have a EL84 ANkit with stock OPT ANK Audiokits - L1 EL84 Integrated Amplifier I want to put into my amp better OPT. So far, I see Tango as a serious contender. Tamura dont offer el84 OPT, hashimoto neither. any suggestions! looking for the pair of opt under 800 USD!

For 800$ I could built you a 6P45S triode amp good for 80W... You might be going past the point of diminishing returns...

 

[thermo]

But can it run on Ultralinear? The El84 only has a 300v screen grid max. voltage. The 7189 or Russian 6P14P has a higher screen grid rating.

 

[artosalo]

But can it run on Ultralinear? The El84 only has a 300v screen grid max. voltage.

In UL- and triode connections the screen voltage varies according to the plate voltage.
Therefore these do not stress G2 like does pentode connection does.
Exceeding the max. screen voltage specs. with few tens of volts does not mean anything
as long as the anode- and screen dissipation is kept within the limits.

 

[rayma]

But can it run on Ultralinear? The El84 only has a 300v screen grid max. voltage.

Take a look here for an example.
http://www.thehistoryofrecording.com/Manuals/DynaCo/Dynakit_ST35.pdf

 

[artosalo]

A good example how loosely amplifier manufacturers have interpreted max. values of tubes is Geloso G.279-A.
It has two pentode connected EL34s with 1000 V plate voltage.
And these amplifiers have been manufactured a lot.

 

[saptemari]

In my opinion, purchasing an expensive pair of OPT's it's worth if you are building a 2A3, or a #45 amp for example. Also, PP OPT's are much easier to build because they will not saturate and they don't have a gap; I don't think those OPT's from the kit are that bad. Enjoy your amp building!