KT88 SE Basic or Master Kit

[scott17]

All of the kits have been sold.

Thanks to all.

Scott

[Dave R]

Originally Posted by scott17

All of the kits have been sold.

Thanks to all.

Scott

No . . . THANK YOU!!!

I'm glad I got mine when I did. You did a great job on the design and the kit came with excellent instructions. The idea of a "first time amp build" was a bit overwhelming at first thought, but the instruction details in this kit were very good.

I completed mine a little over a year ago, and have to say that the sound is superb.

The only problem I've had is that it's been in storage for the past few months, while the "man cave" has been under construction! I'm looking forward to getting it hooked up again in the new digs.

~Dave

[TerryO]

Originally Posted by Dave R

No . . . THANK YOU!!!

I'm glad I got mine when I did. You did a great job on the design and the kit came with excellent instructions. The idea of a "first time amp build" was a bit overwhelming at first thought, but the instruction details in this kit were very good.

I completed mine a little over a year ago, and have to say that the sound is superb.

The only problem I've had is that it's been in storage for the past few months, while the "man cave" has been under construction! I'm looking forward to getting it hooked up again in the new digs.

~Dave

Dave's amp turned out very nice and sounds great! He's very proud how it turned out, as he should be!

Best Regards,
TerryO

[Airsuspension]

Hi Scott,

Originally Posted by scott17

All of the kits have been sold.

Thanks to all.

Scott

I'd really wanted to try out your Design of this Amp. But the shipping costs to Europe (incl. the transformers) are ridiculous.
Sorry!

Are there more Europeans out there that want to build the same Design?

May be we can find find an extra solution?

I really would like to test it!

Ciao
Christoph

[scott17]

It should not be that difficult to source the parts locally. As you know, the parts list is in the very first post of this thread as well as the transformer specifications.
Here is the link to the schematic and chassis layout:
KT88 SE Complete Kit See post #126

There are several photos of the interior layout in this thread. The layout and grounding scheme is important. It is also important to use the individual LC filters for the driver tube.

I'll be glad to help in any way I can.

Scott

Originally Posted by Airsuspension

May be we can find find an extra solution?

I really would like to test it!

Ciao
Christoph

[TiMBoZ]

I haven't even built mine yet but I'm already excited and hankering, got the 'covets' for a 2 x SE KT88 mono block. Hint hint. Should probably finish this one first. Maybe in a year from now. My build will be slow. This will be my first valve amp. What kinds of speakers are people using? Dave R looks like he has some DIY 2.5 way? How does it go Dave?

[Dave R]

Originally Posted by TiMBoZ

Dave R looks like he has some DIY 2.5 way? How does it go Dave?

The TMM in my set up is not a 2.5 way. The (2) 6.5 midwoofers are 4-ohm, wired together in series for a (nominal) 8-ohm load. The crossover from woofer branch to tweeter is a series. I would consider it a 2-way. These are tuned to ~ 41 Hz.

The TMM's are very nice sounding (IMHO of course ) . However the hefty impedance swing from 7 ohms to 40+ ohms on the mass loaded peaks make this tube amp struggle a bit on the low end. Nothing a properly adjusted sub can't accommodate, though. If I had to do it over again, I'd look at (2) 8-ohm midwoofers and a single (more efficient) 4 ohm tweeter. The mass loaded peaks would be half, instead of double in that case. The good thing is that the impedance of the TMM's is not an issue for the SS amp.

I have a smaller 2-way bookshelf pair (also vented, and also series crossover) which is a magical match with this amp. It is tuned to ~ 64 Hz, but even without a sub I find it quite enjoyable. One day, I'll re-build the cabinets on these to match the amp case.

[Airsuspension]

Dear Scott,

Originally Posted by scott17

It should not be that difficult to source the parts locally. As you know, the parts list is in the very first post of this thread

sure, and I think all of us wich are following the thread appriciate that a lot.

Originally Posted by scott17

as well as the transformer specifications.

That was the purpose of my post: Did anybody in Europe find any good source for the heavy stuff?

Originally Posted by scott17

Here is the link to the schematic and chassis layout:
KT88 SE Complete Kit See post #126

There are several photos of the interior layout in this thread. The layout and grounding scheme is important. It is also important to use the individual LC filters for the driver tube.

I'll be glad to help in any way I can.

Scott

Scott, the purpose of this post was:
Buy your chassis/Kit,witch i really lik, but without the heavy stuff.
Find some people around here to get a small series made of the coils.

Ciao
Christoph

[scott17]

Hi Christoph,

I certainly didn't mean for my response to be taken in a negative way if it was.

I really am glad to help in any way that I can.

All the best,

Scott

[TerryO]

Originally Posted by Dave R

The TMM in my set up is not a 2.5 way. The (2) 6.5 midwoofers are 4-ohm, wired together in series for a (nominal) 8-ohm load. The crossover from woofer branch to tweeter is a series. I would consider it a 2-way. These are tuned to ~ 41 Hz.

The TMM's are very nice sounding (IMHO of course ) . However the hefty impedance swing from 7 ohms to 40+ ohms on the mass loaded peaks make this tube amp struggle a bit on the low end. Nothing a properly adjusted sub can't accommodate, though. If I had to do it over again, I'd look at (2) 8-ohm midwoofers and a single (more efficient) 4 ohm tweeter. The mass loaded peaks would be half, instead of double in that case. The good thing is that the impedance of the TMM's is not an issue for the SS amp.

I have a smaller 2-way bookshelf pair (also vented, and also series crossover) which is a magical match with this amp. It is tuned to ~ 64 Hz, but even without a sub I find it quite enjoyable. One day, I'll re-build the cabinets on these to match the amp case.

On SS, Dave's TMM's sound very nice, however they are totally eclipsed by the DR1s and 2s with tubes, which is an excellent match for the speakers.
Just a note: unlike some of the popular wisdom that unfortunately passes for truth, it's certainly possible to have better bass from tubes, if the speakers are correctly designed with that in mind.

Best Regards,
TerryO