Hi all.
Been browsing for a week or so and thought it was about time I posted an introduction. I am intending to make a comeback into DIY electronics / audio (I have done almost nothing in this area for longer than I care to remember) and this looked like a very useful group to be part of.
Below are some project I may tackle in the future :-
[0] Buy some test equipment, eg 'scope / DVM / variac etc etc.
[1] 9v 50Hz supply for a thorens TD166 TT - maybe with switchable frequencies to do 33/45 rpm if the motor can cope !!
[2] Similar to above but 240v for a project garrard 401 TT. This would need to have a freq adjustment as this TT normally uses an eddy current brake to trim the speed down.
[3] ~20w class A amp for bi-amping. I have a HK citation 12 amp that might be able to donate some parts (PSU / heatsinks) ?
[4] re-engineer some home made R50 transmission line speakers eg replace drive units (kef originals - well worn !!) / crossovers and wire for bi-amping.
Hopefully I may be able to provide advice to others although my electronics skills are somewhat "out of date" and limited.
DC
Been browsing for a week or so and thought it was about time I posted an introduction. I am intending to make a comeback into DIY electronics / audio (I have done almost nothing in this area for longer than I care to remember) and this looked like a very useful group to be part of.
Below are some project I may tackle in the future :-
[0] Buy some test equipment, eg 'scope / DVM / variac etc etc.
[1] 9v 50Hz supply for a thorens TD166 TT - maybe with switchable frequencies to do 33/45 rpm if the motor can cope !!
[2] Similar to above but 240v for a project garrard 401 TT. This would need to have a freq adjustment as this TT normally uses an eddy current brake to trim the speed down.
[3] ~20w class A amp for bi-amping. I have a HK citation 12 amp that might be able to donate some parts (PSU / heatsinks) ?
[4] re-engineer some home made R50 transmission line speakers eg replace drive units (kef originals - well worn !!) / crossovers and wire for bi-amping.
Hopefully I may be able to provide advice to others although my electronics skills are somewhat "out of date" and limited.
DC
You are in the right place now!
power supplies and amplifiers and loudspeakers
DRC,
I know you get support
with anything you want to know
those things is what this forum knows about
Do you have your own homepage, yet? 😎
----------------------------------------------------
like bikes?!
well - Look Here!
dkemppai - a mate from Michigan USA - on his bike !!!!!!!!!!!!!!
he is good at audio, too 😉😉
---------------------------------------------------------
/halojoy - welcomes DRC from United Kingdom
- likes the attitude of those crazy english
power supplies and amplifiers and loudspeakers
DRC,
I know you get support
with anything you want to know
those things is what this forum knows about
Do you have your own homepage, yet? 😎
----------------------------------------------------
like bikes?!
well - Look Here!
dkemppai - a mate from Michigan USA - on his bike !!!!!!!!!!!!!!
he is good at audio, too 😉😉
---------------------------------------------------------
/halojoy - welcomes DRC from United Kingdom
- likes the attitude of those crazy english
Oops !
Halo,
I thought my intro had gone completely un-noticed
but what do you know - 2 replies !!!
My progress to DIY nirvana so far :
[1] I am still looking around for a 'scope.
I investigated some PC based A/D's but concluded
they might be a bit difficult / awkward to use in practice
(oh, how I hate software) - a useful addition to the arsenal
but I think I will need a "proper" 'scope first.
Any suggestions for tried and tested models (something I
could find second hand) would be appreciated !
[2] I have also been looking at a multitude of class-A S/S
amp designs. I think I need something around 20W but
getting rid of the excess heat will be a real problem.
(200Hz and up - lowish sensitivity speakers - 2 way x-over)
Still, I did help Kram to fix his heaphone amp !
http://www.diyaudio.com/forums/showthread.php?s=&threadid=6496
BTW
I am in the process of setting up a homepage, and yes, there will
be a picture of my bike on it. Maybe a recording of it too ...
Dave
Halo,
I thought my intro had gone completely un-noticed
but what do you know - 2 replies !!!
My progress to DIY nirvana so far :
[1] I am still looking around for a 'scope.
I investigated some PC based A/D's but concluded
they might be a bit difficult / awkward to use in practice
(oh, how I hate software) - a useful addition to the arsenal
but I think I will need a "proper" 'scope first.
Any suggestions for tried and tested models (something I
could find second hand) would be appreciated !
[2] I have also been looking at a multitude of class-A S/S
amp designs. I think I need something around 20W but
getting rid of the excess heat will be a real problem.
(200Hz and up - lowish sensitivity speakers - 2 way x-over)
Still, I did help Kram to fix his heaphone amp !
http://www.diyaudio.com/forums/showthread.php?s=&threadid=6496
BTW
I am in the process of setting up a homepage, and yes, there will
be a picture of my bike on it. Maybe a recording of it too ...
Dave
Re: Oops !
There is a reason why oscilloscopes are the way they are. They are convenient to use. When did you last see that phrase levelled at a computer? You really don't want to touch a PC-based "oscilloscope" with the proverbial sterilised barge pole.
Aside from the convenience aspect, their sample rate is not nearly high enough. "Real" digital oscilloscopes need (and have) much higher sample rates than 48kHz. My oscilloscope has a maximum sample rate of 5GS/s...
You can pick up a Tektronix 465B 100MHz analogue oscilloscope for about £250, possibly less if you wave a wad of £20 notes. Look in the adverts in Electronics World. The 465 is a "proper" piece of kit that will take you a long time to outgrow.
Your (Chris Rogers HiFi Answers) R50 loudspeakers produce the best bass I have heard, but the rest leaves a lot to be desired. You could use them as subs with some more able (little) boxes to do the critical stuff. Active crossovers are definitely in order if you can tolerate the complexity...
Incidentally, I have heard that Cornwall wanted independence, but I didn't know that you had adopted the EU flag!
DRC said:
There is a reason why oscilloscopes are the way they are. They are convenient to use. When did you last see that phrase levelled at a computer? You really don't want to touch a PC-based "oscilloscope" with the proverbial sterilised barge pole.
Aside from the convenience aspect, their sample rate is not nearly high enough. "Real" digital oscilloscopes need (and have) much higher sample rates than 48kHz. My oscilloscope has a maximum sample rate of 5GS/s...
You can pick up a Tektronix 465B 100MHz analogue oscilloscope for about £250, possibly less if you wave a wad of £20 notes. Look in the adverts in Electronics World. The 465 is a "proper" piece of kit that will take you a long time to outgrow.
Your (Chris Rogers HiFi Answers) R50 loudspeakers produce the best bass I have heard, but the rest leaves a lot to be desired. You could use them as subs with some more able (little) boxes to do the critical stuff. Active crossovers are definitely in order if you can tolerate the complexity...
Incidentally, I have heard that Cornwall wanted independence, but I didn't know that you had adopted the EU flag!
- Status
- Not open for further replies.