MI60 Clone
- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
MI60 Clone
hey guys,
i tried to introduce myself in francais....as i sad i tried
anyway....i have an old ibanez hybrid tube amp...two el34 and one 12ax7 preamp tube....with some hybrid pices in it...
find yesterday this forum...and fall in love with the mi60!
so i decide to clone the mi60....
i will try to report my work....
to the layout...i find only this layout -->http://gilles.thebault.free.fr/MI60/sch ... iginal.pdf
is this the newest?
raffa
i tried to introduce myself in francais....as i sad i tried
anyway....i have an old ibanez hybrid tube amp...two el34 and one 12ax7 preamp tube....with some hybrid pices in it...
find yesterday this forum...and fall in love with the mi60!
so i decide to clone the mi60....
i will try to report my work....
to the layout...i find only this layout -->http://gilles.thebault.free.fr/MI60/sch ... iginal.pdf
is this the newest?
raffa
Re : MI60 Clone
Hi, and welcome on the PG5 forum.
I'm not the best informed guy about the MI60 amp here but I'm sure that the guys who worked on it will give you all you need.
Anyway it's a good choice if you like powerfull and Rock'n roll amps.
The MI60 is nothing else that a vintage french vue of the english tone.
I'm not the best informed guy about the MI60 amp here but I'm sure that the guys who worked on it will give you all you need.
Anyway it's a good choice if you like powerfull and Rock'n roll amps.
The MI60 is nothing else that a vintage french vue of the english tone.
Re : MI60 Clone
Welcome raffa,
Don't be afraid, if you need support, we can do our best to help you.
The layout drawing seems to be correct but the drilling must be adapted for the components you'll use.
In this forum, we can made all transformers as we want or find équivalent in Hammond series.
Have a good trip
Don't be afraid, if you need support, we can do our best to help you.
The layout drawing seems to be correct but the drilling must be adapted for the components you'll use.
In this forum, we can made all transformers as we want or find équivalent in Hammond series.
Have a good trip
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- charpy
- G5 Team
- Messages : 3512
- Enregistré le : 23 févr. 2005, 1:00
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Re : MI60 Clone
hello and welcome !
you can compare the layout with this schematic
http://www.projetg5.com/Projets/MI60/MI60_original.pdf
I don't see the rotoswitch for the master volume on the layout (replaced by a potentiometer). the original MI60s have au rotoswitch with a laaaaaarge knob)
Have you cheked if your ibanez amp have similar tension for A+ (440V). this is an important point for the MI60. don't care if it is 460 ou 420V, but It must be over 400V and below 480V)
you can compare the layout with this schematic
http://www.projetg5.com/Projets/MI60/MI60_original.pdf
I don't see the rotoswitch for the master volume on the layout (replaced by a potentiometer). the original MI60s have au rotoswitch with a laaaaaarge knob)
Have you cheked if your ibanez amp have similar tension for A+ (440V). this is an important point for the MI60. don't care if it is 460 ou 420V, but It must be over 400V and below 480V)
- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Re : MI60 Clone
wow...merci beaucoup pour votre réponse...
i think that the OT will bring the requested power...i hope!
as soon as i can get my hands on my ibanez amp from the garage, i will check the hole tensions....
this is the amp that i will use for the mi60 clone --> http://fr.audiofanzine.com/combo-guitar ... IBZ-60-TE/
merci raffa
i think that the OT will bring the requested power...i hope!
as soon as i can get my hands on my ibanez amp from the garage, i will check the hole tensions....
this is the amp that i will use for the mi60 clone --> http://fr.audiofanzine.com/combo-guitar ... IBZ-60-TE/
merci raffa
- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Finally the journey starts!
salut les gars bonne année!
i finally start today with the mi60 project!
the NT has the follow specs:
input primary; 240VAC
heaters Secundary; 6.5 VAC
bias: 37.3 VAC
RMS without centertap; 380VAC
can i use this Transformer?
raffa
i finally start today with the mi60 project!
the NT has the follow specs:
input primary; 240VAC
heaters Secundary; 6.5 VAC
bias: 37.3 VAC
RMS without centertap; 380VAC
can i use this Transformer?
raffa
Re : MI60 Clone
Hello Raffa, happy new year too
We need more informations about the Power transforner, you must say us the current delevery of each voltage the total power.
With this informations we could start the evaluation of the power supply and say you if you could use this transformer.
We need more informations about the Power transforner, you must say us the current delevery of each voltage the total power.
With this informations we could start the evaluation of the power supply and say you if you could use this transformer.
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- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Re : MI60 Clone
alors...
the PT has 94 Watt...
380 VAC * 1.4 ->> 532 VDC
the current is --> 94/532 --> 176 mA
ces't correct?
raffa
the PT has 94 Watt...
380 VAC * 1.4 ->> 532 VDC
the current is --> 94/532 --> 176 mA
ces't correct?
raffa
Modifié en dernier par theleftfoot le 03 févr. 2010, 14:09, modifié 2 fois.
- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Re : MI60 Clone
allo?
is someone in? wana go futher...
raffa
is someone in? wana go futher...
raffa
- McColson
- Admin du site
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- Enregistré le : 07 nov. 2004, 1:00
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Re : MI60 Clone
Hello, and for the heater ? How many current can he suplly ?
..:: Veuillez consulter les règles du forum ::..
- charpy
- G5 Team
- Messages : 3512
- Enregistré le : 23 févr. 2005, 1:00
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Re : MI60 Clone
I think 94W is a a very minimum for a MI60 clone and your calcul is wrong. you must use AC value.
you need : 6.3x4A = 25W for the heater
and 380Vac x 0.2A for the high voltage = 76W
so your transformer may be good but you must not overload it : chose a cold biasing point and dont not use the amp into saturation at full power if the load is small (below 5k).
could you check the load of the output transformer (inject AC voltage to the plates terminals an measure the voltage at the output terminal). give us your measure I will calculate the primary load.
you need : 6.3x4A = 25W for the heater
and 380Vac x 0.2A for the high voltage = 76W
so your transformer may be good but you must not overload it : chose a cold biasing point and dont not use the amp into saturation at full power if the load is small (below 5k).
could you check the load of the output transformer (inject AC voltage to the plates terminals an measure the voltage at the output terminal). give us your measure I will calculate the primary load.
- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Re : MI60 Clone
okay, will do it ce soir!
Re : MI60 Clone
Sorry for the delay,, I don't see the new messages
Generaly the power for a 50W amp is around 250VA to be comfortable, the AC current needed for the HV is around 300 / 400 mAac
After you had the power needed for the heather you must find a power around 250 VA, and for the HV voltage, you can found the informations on the thread on the forum.
Generaly the power for a 50W amp is around 250VA to be comfortable, the AC current needed for the HV is around 300 / 400 mAac
After you had the power needed for the heather you must find a power around 250 VA, and for the HV voltage, you can found the informations on the thread on the forum.
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- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Re : MI60 Clone
alors les gars,
je suis fini! ... and the amp works on the first launch! manific!
but got two problem!
1. the bias vollatage is okay....32.6 V but the current on the tube are 90 mA! i can't adjust more on the trimmer is full up!
what can i do? should i increase the resistor ?
2. i get a really loud buzz when i start up the baby from the standby! is that because the current is to high? the heater all okay...about 6.4 VAC
thanks for the help
btw; some pics..
je suis fini! ... and the amp works on the first launch! manific!
but got two problem!
1. the bias vollatage is okay....32.6 V but the current on the tube are 90 mA! i can't adjust more on the trimmer is full up!
what can i do? should i increase the resistor ?
2. i get a really loud buzz when i start up the baby from the standby! is that because the current is to high? the heater all okay...about 6.4 VAC
thanks for the help
btw; some pics..
- theleftfoot
- G5 bidouilleur
- Messages : 24
- Enregistré le : 23 nov. 2009, 1:00
Re : MI60 Clone
hey guys, whats up?
can someone help me out! please
can someone help me out! please