another, on a serious note.
http://www.fletchersite.com/
There are sites, some like this one
http://www.user-service-manuals.com/
http://hifi-wiki.com/index.php/Product_Database(maybe)
Sorry bout the grill pan, reminded me of the A1
Mike
http://www.fletchersite.com/
There are sites, some like this one
http://www.user-service-manuals.com/
http://hifi-wiki.com/index.php/Product_Database(maybe)
Sorry bout the grill pan, reminded me of the A1
Mike
Re: a possible link
Mmmm, tasty bit of kit. Thanks, lol.
Lee.
mikee55 said:
Mmmm, tasty bit of kit. Thanks, lol.
Lee.
In all seriousness though, I am very impressed with this B1 amp. The sound is very open and clean and with great bass control.
I just managed to squeeze some Mundorf smoothing caps in there, which made a nice difference, I also changed the preamp section opamp to LM4562, which really improved the detail.
Cheers for the links,
Lee.
I just managed to squeeze some Mundorf smoothing caps in there, which made a nice difference, I also changed the preamp section opamp to LM4562, which really improved the detail.
Cheers for the links,
Lee.
B1 Scematic?
Hi Thomo
Did you manage to locate the schematics you were looking for?
The reason I ask is my B1 went 'belly up' at the weekend; I replaced the fuse at the back of the unit, it powered up, but no output.
I whipped the top off to find resistor R69 and one of the main electrolytic caps were touching and the resistor totally scorched - I am certain the resistor is open circuit, but no sure about the state of the cap - its marked and the plastic coating has partly flaked off but it looks OK.
Anyway, the resistor is too badly damaged to figure out it's rating, so I am trying to find a schematic to find out, once I have relpaced it I should be able to figure out the status of the cap.
I have tried following the links provided by Mikee55, but without any success.
Any help would be appreciated - cheers.
Hi Thomo
Did you manage to locate the schematics you were looking for?
The reason I ask is my B1 went 'belly up' at the weekend; I replaced the fuse at the back of the unit, it powered up, but no output.
I whipped the top off to find resistor R69 and one of the main electrolytic caps were touching and the resistor totally scorched - I am certain the resistor is open circuit, but no sure about the state of the cap - its marked and the plastic coating has partly flaked off but it looks OK.
Anyway, the resistor is too badly damaged to figure out it's rating, so I am trying to find a schematic to find out, once I have relpaced it I should be able to figure out the status of the cap.
I have tried following the links provided by Mikee55, but without any success.
Any help would be appreciated - cheers.
Hi, I'm glad you found the schematic useful.
I'm not sure of the correct bias value, but if your amp is still working well, I'd just balance the two channels to the same value (ie adjust one channel to match the other).
Have you changed any of the capacitors in your amp yet? Also, a fantastic mod is to upgrade the opamp in the preamp section, I used LM4562.
I'm going to have another look inside again soon as I'm using the amp again in my main system. It may not have oodles of power, but it'll drive anything as long as you don't need it really loud.
Cheers, Lee.
I'm not sure of the correct bias value, but if your amp is still working well, I'd just balance the two channels to the same value (ie adjust one channel to match the other).
Have you changed any of the capacitors in your amp yet? Also, a fantastic mod is to upgrade the opamp in the preamp section, I used LM4562.
I'm going to have another look inside again soon as I'm using the amp again in my main system. It may not have oodles of power, but it'll drive anything as long as you don't need it really loud.
Cheers, Lee.
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