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Home Theater => Audio => Tubes => Topic started by: FASTBACK on Aug 07, 2005 at 01:01 PM

Title: S.E.X Kit Amp
Post by: FASTBACK on Aug 07, 2005 at 01:01 PM: This is the S.E.X (Single Ended eXperimentation) Kit Amplifier Rev 1.1

2 Watts Parallel single ended monoblock.

(http://groups.msn.com/_Secure/0VgCZAlEZlUnA1yWIzux6V0Q!FKQcwW35Z81lzGAtZ510BZxQFLqheO*YcyUh74ou4zNvVk53a4czTSkDeelw6FDe6sacwPtopojI7YaWpXrL7exHezBT2vewWCmEN7GA/Sex%20Amp%20Monoblock%20FV.jpg?dc=4675533953949509322)

The two monoblock side by side.

(http://groups.msn.com/_Secure/0TgCNAhwXlYzA1yWIzux6V4QWEiCFQPYikDDu9xEXHFyFl9Y4cHiKEPmPcmQTChFGMPq0YDrmk!ArBByDMB26*y7dpA*4i3zvTYag*PgcekljZTZ12rOGjg/Sex%20Amp%20stereo.jpg?dc=4675533954174772403)

Another View

(http://groups.msn.com/_Secure/0VQCJAgcZ6kHA1yWIzux6V0Q!FKQcwW35rl80*O*p4lNnCyOYkPpaMypIcRFO3WJj7jwG9643l!S97IhCZo3n86RtoAxNoimCXSmk56PtDMN4O7*uvGfoIMtEU3pCVtsV/Sex%20Amp%20Monoblock.jpg?dc=4675533953668693225)

http://www.wiredstate.com/forum/viewtopic.php?t=7269
Title: Re: S.E.X Kit Amp
Post by: JojoD818 on Aug 09, 2005 at 08:36 AM: bro,

congrats! you finally put it together na pala, very good job!

cheers!
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 10, 2005 at 02:06 AM: JojoD

Thanks, finally after two long months I was able to hear a tube amp in my own system.
Title: Re: S.E.X Kit Amp
Post by: odyopayl on Aug 10, 2005 at 08:56 AM: Read in a magazine "The best sounding tube amplifiers are those design with low wattage". Congratulation Sir! BTW, what speakers are you going to use?
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 11, 2005 at 07:58 AM: Quote from: odyopayl on Aug 10, 2005 at 08:56 AM
Read in a magazine "The best sounding tube amplifiers are those design with low wattage". Congratulation Sir! BTW, what speakers are you going to use?

odyopayl

Thanks.

Presently the speakears I am using is also a DIY bought locally 4" driver and 1" tweeter only. But it fills my room with sweet music.
Title: Re: S.E.X Kit Amp
Post by: JojoD818 on Aug 11, 2005 at 10:34 PM: Quote from: FASTBACK on Aug 10, 2005 at 02:06 AM
JojoD

Thanks, finally after two long months I was able to hear a tube amp in my own system.

So what is your initial impressions with the SEX amp? Any comments with regards to your ss gears? It is coupled to your DIY preamp right?
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 12, 2005 at 09:26 PM: Quote from: JojoD818 on Aug 11, 2005 at 10:34 PM
So what is your initial impressions with the SEX amp? Any comments with regards to your ss gears? It is coupled to your DIY preamp right?

I have compared it to my HT amp and the difference is night and day, I love the tube amps mids and highs very clear and soothing to my ears.

Presently the amp is coupled to my SS DIY preamp, I have yet to make a preamp. Hope to make one soon, and get a high sensitivity speakers for it as well.
Title: Re: S.E.X Kit Amp
Post by: s2kov on Aug 19, 2005 at 11:51 AM: hi master tony,

that is what i am currently doing it now! using VR tubes! ;D >:D ewan ko lng kung ultimate nga when i'm done! :D :D :D :D :D

Quote from: 2ny on Aug 19, 2005 at 08:08 AM
fastback,

time to build that frank's ultimate tube preamp.....
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 21, 2005 at 01:58 AM: Quote from: 2ny on Aug 19, 2005 at 08:08 AM
fastback,

time to build that frank's ultimate tube preamp.....

Alright sir

just say when.

Thanks.
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 21, 2005 at 02:00 AM: Quote from: s2kov on Aug 19, 2005 at 11:51 AM
hi master tony,

that is what i am currently doing it now! using VR tubes! ;D >:D ewan ko lng kung ultimate nga when i'm done! :D :D :D :D :D

s2Kov

Good luck on your present project.
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 21, 2005 at 03:47 PM: Quote from: 2ny on Aug 21, 2005 at 02:02 PM
i have designs made and will make the prototype. features are:

1. voltage doubler using fred rectifier to two 1000ufd/250volts series connected caps.
2. filter choke then to 385ufd/450volt 105*C caps
3. all transistor regulation to 350volts for line stage, 305volts to phono amp stage.
4. 12volt dc supplies for heaters, 7025 heaters wired in series, separate heater supply for the upper 12bh7 stages,
5. power supply assembled on an FR4 glass epoxy board, instead of phonolic board.
6. power trasformer shall have copper foil electrostatic sheilds.

voltage doublers as opposed to full wave bridge is favored by many japanese designers! for tubes they are very attractive.

wow. very attractive indeed.
will wait for the initial result of the prototype, for now time to search for sources of the caps and the FR4 boards.

Thanks
Title: Re: S.E.X Kit Amp
Post by: s2kov on Aug 22, 2005 at 04:43 PM: Thanks! ;D

Quote from: FASTBACK on Aug 21, 2005 at 02:00 AM
s2Kov

Good luck on your present project.
Title: Re: S.E.X Kit Amp
Post by: s2kov on Aug 22, 2005 at 04:56 PM: drooling! >:D

master tony, do you have source for 7025 tube?

Quote from: 2ny on Aug 21, 2005 at 02:02 PM
i have designs made and will make the prototype. features are:

1. voltage doubler using fred rectifier to two 1000ufd/250volts series connected caps.
2. filter choke then to 385ufd/450volt 105*C caps
3. all transistor regulation to 350volts for line stage, 305volts to phono amp stage.
4. 12volt dc supplies for heaters, 7025 heaters wired in series, separate heater supply for the upper 12bh7 stages,
5. power supply assembled on an FR4 glass epoxy board, instead of phonolic board.
6. power trasformer shall have copper foil electrostatic sheilds.

voltage doublers as opposed to full wave bridge is favored by many japanese designers! for tubes they are very attractive.
Title: Re: S.E.X Kit Amp
Post by: s2kov on Aug 23, 2005 at 09:05 AM: nyahaha! ;D lapit na yan! ;D

email mo skin kpag tapos na! :D
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Aug 23, 2005 at 12:54 PM: Getting excited already just looking at the pictures of the tranny.

Lapit na nga, this will match the tranny of my S.E.X amp.

Thanks
Title: Re: S.E.X Kit Amp
Post by: FASTBACK on Sep 05, 2005 at 07:03 AM: Wow already done.

Now time to start complete the remaining parts of the preamp.

Thanks Sir. 8)