Diyfactory Forum
Основные форумы => Гитарное оборудование => Тема начата: armkon от Марта 21, 2010, 01:26:44 am
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Hello, i thinking about making silient recording kit, thats mean 1W or a little more pa with a RLC type loadbox and speaker sim.
That idea have been used in cream machine preamp from H&K and it sound realy good when recording direct to pc input.
The idea is to build something like that for use with diffrent preamps, because i use rack system for playing.
I thinking about make firefly power amp, maby someone have other sugestions on the power amp to use?
waiting for your idea.
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Another one way is to use small JFET amplifier loadet on transformer
http://diyfactory.ru/forum/index.php?showtopic=783 (http://diyfactory.ru/forum/index.php?showtopic=783)
http://milas.spb.ru/~kmg/microfetpa_en.html (http://milas.spb.ru/~kmg/microfetpa_en.html)
You can try to use transformer from old battery powered trnsistor radio.
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i want to make the poweramp, not intrested in fet because they will dont give me the true tube sound, i will use that with the all tube pre so using it with the fet is nonsens in my opinion...
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In this case you can try to use this
http://www.freestompboxes.org/viewtopic.php?f=2&t=7724 (http://www.freestompboxes.org/viewtopic.php?f=2&t=7724)
or this design
http://www.freestompboxes.org/viewtopic.php?f=2&t=4848 (http://www.freestompboxes.org/viewtopic.php?f=2&t=4848)
PS About JFETs you not so right, they has curves similar to pentodes so in "power" stage they work similar.
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hmm i build 3 fets effects, nothing sound like tube, tube is tube :D The silent recording is not so easy to do for guitar to sound like on normal speaker. That's a little sad but i will fight to make it so close as i can, will tray to build rlc loadbox. RLC sound better then the regular resistor loadbox. If someone want to know something about RLC:
http://www.hexeguitar.com/work-hexeamp_e (http://www.hexeguitar.com/work-hexeamp_e) - the sound sample are recorded by RLC then to speaker sim
http://www.aikenamps.com/spkrload.html (http://www.aikenamps.com/spkrload.html) - RLC loadbox, the socond is better then first
if someone know Polish language can go to Trioda.pl -> kacik gitarowy for many intresting things (mały bizon is hexeamp thred with schematics), The PzP is owner of hexeguitar.com
oh and one more thing:
in mp3 attachment ther is comparation of Resistor - RLC - Speaker
if someone have idea for the 1W-4W poweramp or schematics of standalone poweramp please plase send them in here :)
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i can't upload file in here so i place it on wrzuta.pl for all to listen it :)
http://armkon.wrzuta.pl/audio/4WM9ekIp4Y7/...lc_real_speaker (http://armkon.wrzuta.pl/audio/4WM9ekIp4Y7/piter_-_load_test_r_rlc_real_speaker)
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I told you not about preamps/effects, only about "power" stage.
Tube preamp emulation has some tricks to do.
Some stuff about it you can find there (unfortunately in russian)
http://gtlab.net/gtlab4/archives/216 (http://gtlab.net/gtlab4/archives/216)
http://gtlab.net/gtlab4/archives/415 (http://gtlab.net/gtlab4/archives/415)
And several articles and projects on my page
http://milas.spb.ru/~kmg/index_en.html (http://milas.spb.ru/~kmg/index_en.html)
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KMG maby you have right, but i can't get this kind transisors in poland that was used in all that constructions. Maby you know any replace transisors for them?