power amp question...
 

Hi there. I have just purchased some yamaha ns10s and a quad 303 power amp
to use with them..Do i need a preamp though...or can i just run straight out
of my pc to the poweramp? Or will this be too loud and explode the speakers?
someone please help me!

power amp question...
 

In article ,
Joe Betro wrote:
Hi there. I have just purchased some yamaha ns10s and a quad 303 power
amp to use with them..Do i need a preamp though...or can i just run
straight out of my pc to the poweramp? Or will this be too loud and
explode the speakers? someone please help me!

Best to fit a simple 100k log two gang potentiometer (volume control)
between the PC and power amp. You'll get one at Maplin, etc.

--
*What was the best thing before sliced bread?

Dave Plowman London SW
To e-mail, change noise into sound.

power amp question...
 

In article , Dave Plowman (News)
writes
In article ,
Joe Betro wrote:
Hi there. I have just purchased some yamaha ns10s and a quad 303 power
amp to use with them..Do i need a preamp though...or can i just run
straight out of my pc to the poweramp? Or will this be too loud and
explode the speakers? someone please help me!

Best to fit a simple 100k log two gang potentiometer (volume control)
between the PC and power amp. You'll get one at Maplin, etc.


And have a look at upgrading the capacitors on the amp which if the
originals have a horrible habit of leaking AND SPEWING THEIR CONTENTS
OVER THE AMP PCB's THERE IS A FIRM THAT DO SOME VERY GOOD REPLACEMENTS
AND UP Grade (bu**er caps lock!) at the same time..

http://www.net-audio.co.uk/quad303caps.html

Well worth the money did one last year and it does sound better in the
bass end:)
--
Tony Sayer

power amp question...
 

Dave Plowman (News) wrote:

Hi there. I have just purchased some yamaha ns10s and a quad 303 power
amp to use with them..Do i need a preamp though...or can i just run
straight out of my pc to the poweramp? Or will this be too loud and
explode the speakers? someone please help me!

Best to fit a simple 100k log two gang potentiometer (volume control)
between the PC and power amp. You'll get one at Maplin, etc.

100k may be a bit large. Without having the specs of the sound card nor
the input impedance of the Quad available, I'd suggest 22k or even 10k.

--
Mark.
http://tranchant.plus.com/

power amp question...
 

In article ,
Mark Tranchant wrote:
Best to fit a simple 100k log two gang potentiometer (volume control)
between the PC and power amp. You'll get one at Maplin, etc.

100k may be a bit large. Without having the specs of the sound card nor
the input impedance of the Quad available,

The Quad is 22k in parallel with 60pF. Requires 0.5v rms for full output.

I'd suggest 22k or even 10k.

In practice probably anything would do. My reason for 100k is that it's
the most common size.

--
*The more people I meet, the more I like my dog.

Dave Plowman London SW
To e-mail, change noise into sound.

power amp question...
 

"Dave Plowman (News)" wrote in
message

In article
,
Mark Tranchant wrote:

Best to fit a simple 100k log two gang potentiometer
(volume
control) between the PC and power amp. You'll get one at
Maplin, etc.

100k may be a bit large. Without having the specs of the
sound card nor the input impedance of the Quad available,

The Quad is 22k in parallel with 60pF. Requires 0.5v rms
for
full output.

I'd suggest 22k or even 10k.

In practice probably anything would do. My reason for 100k
is
that it's the most common size.

100K potentiomenters without an active buffer stage yields a
system that is relatively sensitive to cable length.

Most PC sound cards are designed to drive loads down to
16-32 ohms (e.g., common headphones). Therefore, a 5K
potentiometer will not load the source down, but will yield
a system that is relatively insensitive to cable lengths.

power amp question...
 

Thanks guys...just one last question.. if I get a potentiometer from maplin,
do i need anything else to connect it to.. I am useless with
electronics...Does it have an input and an output on it or would i have to
make some sort of electrical box? Im so confused 8-(


"Arny Krueger" wrote in message
...
"Dave Plowman (News)" wrote in
message

In article
,
Mark Tranchant wrote:

Best to fit a simple 100k log two gang potentiometer
(volume
control) between the PC and power amp. You'll get one at
Maplin, etc.

100k may be a bit large. Without having the specs of the
sound card nor the input impedance of the Quad available,

The Quad is 22k in parallel with 60pF. Requires 0.5v rms
for
full output.

I'd suggest 22k or even 10k.

In practice probably anything would do. My reason for 100k
is
that it's the most common size.

100K potentiomenters without an active buffer stage yields a
system that is relatively sensitive to cable length.

Most PC sound cards are designed to drive loads down to
16-32 ohms (e.g., common headphones). Therefore, a 5K
potentiometer will not load the source down, but will yield
a system that is relatively insensitive to cable lengths.

power amp question...
 

"Joe Betro" wrote in message
.uk...
Thanks guys...just one last question.. if I get a potentiometer from
maplin,
do i need anything else to connect it to.. I am useless with
electronics...Does it have an input and an output on it or would i
have to
make some sort of electrical box? Im so confused 8-(



If you are 'useless with electronics' then you really ought to ask
someone who knows what they are doing to help you.

The one item you have overlooked is switched the amp on - it is
normally done by a low voltage d.c. supply from the 33 pre-amp. You
will need to provide some sort of source supply or it will matter not
how much you put into it - it will just sit there like a useless lump
of metal!


--
Woody

harrogate2 at ntlworld dot com

power amp question...
 

In article , harrogate2
writes

"Joe Betro" wrote in message
o.uk...
Thanks guys...just one last question.. if I get a potentiometer from
maplin,
do i need anything else to connect it to.. I am useless with
electronics...Does it have an input and an output on it or would i
have to
make some sort of electrical box? Im so confused 8-(



If you are 'useless with electronics' then you really ought to ask
someone who knows what they are doing to help you.

The one item you have overlooked is switched the amp on - it is
normally done by a low voltage d.c. supply from the 33 pre-amp. You
will need to provide some sort of source supply or it will matter not
how much you put into it - it will just sit there like a useless lump
of metal!



Eh?, Are you sure about that?. My old 303 starts up fine on its own
thanks. From the 33 there is a switched mains supply?....


confused!!....

--
Tony Sayer

power amp question...
 

On Tue, 05 Jul 2005 19:17:58 +0000, harrogate2 wrote:

snip

The one item you have overlooked is switched the amp on - it is
normally done by a low voltage d.c. supply from the 33 pre-amp. You
will need to provide some sort of source supply or it will matter not
how much you put into it - it will just sit there like a useless lump
of metal!

Sorry, you are wrong - not on the 303. It is a "standard" stereo power
amp that uses a direct mains input via a small 3-pin "bulgin" connector.
If you connect mains to it via a suitable plug it will power straight up.
The 33 preamp provides a switched mains supply to feed it. There is no low
voltage control.

--
Mick
(no M$ software on here... :-) )
Web: http://www.nascom.info
Web: http://projectedsound.tk