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KT88 pp monobloc thoughts
KT88 pp monobloc thoughts
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Old 27th March 2017, 11:55 PM   #1
GKF is offline GKF  Canada
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Default KT88 pp monobloc thoughts

guys this has been on my mind now for weeks. my only history with tube is a old st70 and 6 years ago a cary rocket 88.
has to be monobloc chassis and 40 50 or even 60 watts.
i want point to point wiring and no pc boards.
never built a tube amp from scratch so need something suitable form a first timer to jump into.

where do i start?
do i buy transformer first or tubes?
how do i pick the right output transformer?

i would like to get a start on purchasing related items
thanks
gordie
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Old 28th March 2017, 12:10 AM   #2
rayma is offline rayma  United States
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Quote:
Originally Posted by GKF View Post
need something suitable form a first timer to jump into.
What kind of speakers do you have? There are so many amplifier options that I'd wait until
you're certain, before buying either transformers or tubes.
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Old 28th March 2017, 12:21 AM   #3
GKF is offline GKF  Canada
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i been building speakers for 46 years currant are 3 way multi driver as main use and sometimes switch to full range tl that i love as well.
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Old 28th March 2017, 12:25 AM   #4
petertub is online now petertub  Sweden
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Get yourself a MkIII kit from dynakitparts.com, skip the small
circuit board and build the phasesplitter with a tagboard. You get all
important part + chassies all in top quality for a 60w monoblock amp.
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Old 28th March 2017, 12:25 AM   #5
rayma is offline rayma  United States
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Originally Posted by GKF View Post
i been building speakers for 46 years currant are 3 way multi driver as main use
and sometimes switch to full range tl that i love as well.
You may need different amps for the two kinds of systems. Many using a full range driver
end up preferring a low power, high quality amp, even a single ended type. A smaller output
transformer will usually have better high frequency response, too.

Last edited by rayma; 28th March 2017 at 12:28 AM.
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Old 28th March 2017, 12:30 AM   #6
GKF is offline GKF  Canada
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no sir no 8 watt wimpy design . 2 or 4 tubes each and power i want
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Old 28th March 2017, 12:33 AM   #7
rayma is offline rayma  United States
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Originally Posted by GKF View Post
no sir no 8 watt wimpy design . 2 or 4 tubes each and power i want
Ok, then how about the KT-120? https://www.tubedepot.com/products/t...er-vacuum-tube
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Old 28th March 2017, 12:39 AM   #8
FullRangeMan is offline FullRangeMan  Brazil
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You need a kit q/all parts incluse, this site are plenty of multi tubes OTL amps in kits form, prices are not cheap though:
Transcendent Sound DIY Specialist in Vacuum Tube OTL Amplifiers
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Old 28th March 2017, 12:44 AM   #9
GKF is offline GKF  Canada
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Quote:
Originally Posted by rayma View Post
thank you
i will go with anything that will fit this build need . that kt120 sounds interesting.
i would like to stay in the 40' 50 or even 60 watts.
see it's not that i use that much all the time no
maybe at the loudest 30 watts.with most times 6 to 10 watts .
so is it possible to build this with 2 kt120?

fullrangeman
that site has cool looking stuff but i don't understand why that stuff is all rated so low watts

Last edited by GKF; 28th March 2017 at 12:54 AM.
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Old 28th March 2017, 12:56 AM   #10
rayma is offline rayma  United States
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Originally Posted by GKF View Post
is it possible to build this with 2 kt120?
Yes, with a lot of extra margin. The KT-90EH is also an option.
Dynakitparts is a really good source for new chassis and transformers,
though you could find a pair of used Dyna MkIIIs.

Last edited by rayma; 28th March 2017 at 01:00 AM.
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