Смотрите архив, внутри 2 PDF:
1.инстурукция к этому комбу.
2.подробная инфа по модификации, с картинками.
Нужен человек, который приедет ко мне домой и все это сделает по уму.
Вот еще прилагаю инфу от Фраера, тоже по подобной модификации:
Fryer modified AC30BM amplifier
In 2005 I bought my first AC30BM amp after seeing it being announced as a clone of Brian's current amps modified by Dave Petersen. I went to the store and brought along my KZ Red Special guitar and two treble boosters to try the amp with. I played the amp cranked at full volume and was very excited to be buying the same amp as Brian used even though it felt a bit dead in the music store room which I put down to how these rooms often sound. Anyway I got a great deal on the AC30BM because I knew the guy who ran the drum department.
Back home with the new AC30 I was of course
curious to try it out with all my own gear and
now used my THD Hotplate and Weber Mini Mass
attenuators (later sold and replaced with the
Marshall PB-100). Using these with the full volume
amp I noticed the amp had serious undertones/
ghost tones and the more I played it I realised it
actually wasn't playable this way.
I contacted a few friends like Mark Reynolds and
Martin Pitcher and they were all surprised about this
- they are experienced for many years in playing the
Vox AC30s as people would know. I also wrote an
email to Brian May at his website and within a few
days I had a reply from the then chief designer of
Vox Steve Grindrod on how to solve this undertone problem. I also talked to my amptech Ola and he said I should bring the amp to him to have a look at. After Ola added new electrolytic smoothing caps the amp was better but was still too overpowered and in general the sound had improved.
Greg and I have probably emailed each other about the AC30BM ideas at least 100 times discussing the 3 versions of the mod and the great thing about Greg is that he 100% understands what a non-tech guy like me means when I say this is wrong sounding or I want my amp to sound like this.
After the first version of the new mod we found the amp sounded much better but was still a little too fizzy sounding and I was a bit surprised by this. It was much improved but this fizziness was too much and I wanted to change other things too. Ola then did a stage 2 mod which had the amp sound improved more and a tone control idea added.
Plugging in my TBX UK made Celestion Blue speakers into the same amp head with same settings the sound is so much better, and especially the difference is heard live listening to the amp in person.
1.инстурукция к этому комбу.
2.подробная инфа по модификации, с картинками.
Нужен человек, который приедет ко мне домой и все это сделает по уму.
Вот еще прилагаю инфу от Фраера, тоже по подобной модификации:
Fryer modified AC30BM amplifier
In 2005 I bought my first AC30BM amp after seeing it being announced as a clone of Brian's current amps modified by Dave Petersen. I went to the store and brought along my KZ Red Special guitar and two treble boosters to try the amp with. I played the amp cranked at full volume and was very excited to be buying the same amp as Brian used even though it felt a bit dead in the music store room which I put down to how these rooms often sound. Anyway I got a great deal on the AC30BM because I knew the guy who ran the drum department.
Back home with the new AC30 I was of course
curious to try it out with all my own gear and
now used my THD Hotplate and Weber Mini Mass
attenuators (later sold and replaced with the
Marshall PB-100). Using these with the full volume
amp I noticed the amp had serious undertones/
ghost tones and the more I played it I realised it
actually wasn't playable this way.
I contacted a few friends like Mark Reynolds and
Martin Pitcher and they were all surprised about this
- they are experienced for many years in playing the
Vox AC30s as people would know. I also wrote an
email to Brian May at his website and within a few
days I had a reply from the then chief designer of
Vox Steve Grindrod on how to solve this undertone problem. I also talked to my amptech Ola and he said I should bring the amp to him to have a look at. After Ola added new electrolytic smoothing caps the amp was better but was still too overpowered and in general the sound had improved.
Then I found another AC30BM amp here and it did not have such bad undertones so I bought it and stuck with it in its original condition until a resistor burned out. Because I had no idea what caused this I published soundclips and messages on various internet forums and within a day I got a reply from Greg Fryer about what could have caused the problem.
After this Greg and I started to discuss the
design of these amps and then at the Red
Special group meetup in UK I tried one of
the AC30BM amps that Mike Ryde modified
with Greg Fryer's assistance. This amp
sounded great and was a big improvement
from standard. Looking back at my AC30BM
amp here I then said to Greg I wanted
something like Mike's amp but maybe not so
hot sounding and more like a TBX or old Vox.
Greg started to work on this and came up with
ideas and also supplied me with parts
(new output transformer, choke, caps, resistors *New OT and choke fitted
and pots). I then let my amptech Ola Lehnert at
LH-Musik here in Stockholm do these mods. Ola is a well respected amptech and has his own amp brand, see http://www.lehnert-amps.com/
After this Greg and I started to discuss the
design of these amps and then at the Red
Special group meetup in UK I tried one of
the AC30BM amps that Mike Ryde modified
with Greg Fryer's assistance. This amp
sounded great and was a big improvement
from standard. Looking back at my AC30BM
amp here I then said to Greg I wanted
something like Mike's amp but maybe not so
hot sounding and more like a TBX or old Vox.
Greg started to work on this and came up with
ideas and also supplied me with parts
(new output transformer, choke, caps, resistors *New OT and choke fitted
and pots). I then let my amptech Ola Lehnert at
LH-Musik here in Stockholm do these mods. Ola is a well respected amptech and has his own amp brand, see http://www.lehnert-amps.com/
Greg and I have probably emailed each other about the AC30BM ideas at least 100 times discussing the 3 versions of the mod and the great thing about Greg is that he 100% understands what a non-tech guy like me means when I say this is wrong sounding or I want my amp to sound like this.
After the first version of the new mod we found the amp sounded much better but was still a little too fizzy sounding and I was a bit surprised by this. It was much improved but this fizziness was too much and I wanted to change other things too. Ola then did a stage 2 mod which had the amp sound improved more and a tone control idea added.
I then found out that the amps in all the Chinese Vox amps use the Chinese made Celestion Alnico Blue speakers and they are different sounding in this fizzy way compared to the proper UK made Celestion Alnico Blues. Apparently they do not use the proper Mueller H1777 cone that the UK Celestion Blues use. Here is a soundsample comparing the two: UK blues VS Chinese blues
Plugging in my TBX UK made Celestion Blue speakers into the same amp head with same settings the sound is so much better, and especially the difference is heard live listening to the amp in person.
