Dual 505
 

"RJH" wrote in message
...
On 17/02/2015 10:28, Sumatriptan wrote:
On 16/02/2015 21:58, Trevor Wilson wrote:


**The headshell falls apart IN EVERY SINGLE ONE. The headshells are
NLA.


Nonsense. I had one with near daily use for over 10 years, with and
without the 1/2" converter. Never missed a beat.

Can't speak for Antipodean imports :-)

Send it back.


I see people discussing fitting of CS505-3 or later headshells. (Not a
trivial task, apparently) But my understanding was that this was related
to cartridge compatibility and an alternative to the adapter kits. I
haven't seen any online info on the early ones actually falling apart.
If you could point me to such info on the mode of failure I would be
interested.


Don't hold your breath :-)

From the photos, the adapter on this CS505 does not look pretty and
must add some mass and therefore may affect performance. I'll take a
good look when it arrives.

It looks a little clumsy but works surprisingly well - and adds
considerable versatility, of course.

I like the Dual 505. A big thing for me is speed stability, and I found
the Dual good for a belt drive. The best I found was a Pink Triangle LPT -
which considering the Heath Robinson appearance I found amazing.

I use an old Technics 1200 at the moment - very pleased.


I'm down to one Pink Triangle now (PT1) and a Townshend Rock. I still think
the PT sounds considerably better than a seriously upgraded LP12.
What arm have you got on your SL1200?

--
David

Dual 505
 

On Wed, 18 Feb 2015 16:58:22 +1100, Trevor Wilson
wrote:

On 18/02/2015 4:13 PM, Don Pearce wrote:
On Wed, 18 Feb 2015 09:13:55 +1100, Trevor Wilson
wrote:

On 17/02/2015 9:28 PM, Sumatriptan wrote:
On 16/02/2015 21:58, Trevor Wilson wrote:


**The headshell falls apart IN EVERY SINGLE ONE. The headshells are NLA.

Send it back.


I see people discussing fitting of CS505-3 or later headshells. (Not a
trivial task, apparently)

**A nonsensically complicated job. Forget it.


But my understanding was that this was related
to cartridge compatibility and an alternative to the adapter kits. I
haven't seen any online info on the early ones actually falling apart.
If you could point me to such info on the mode of failure I would be
interested.

**The headshell falls apart. I suspect the plastic used is not a stable
product like ABS, but is something inferior. As for reports, just do a
search. You'll receive a large number of results.




From the photos, the adapter on this CS505 does not look pretty and
must add some mass and therefore may affect performance. I'll take a
good look when it arrives.

**Send it back. Look for a later model.

ABS is not UV stable. There is an alternative called PCABS which is
used instead.


**Thanks for that info. I thought ABS was quite stable.

I've just had a bunch of satellite LNB housings tested - 200 hours and
they where white and powdery. All I expect is some colour shift. I
told them before we started testing what would happen.

d

Dual 505
 

On Mon, 16 Feb 2015 19:14:47 +0000, Sumatriptan wrote:

On 16/02/2015 18:06, Eiron wrote:
On 16/02/2015 17:49, Java Jive wrote:
If by phone input you mean one with RIAA bias-correction, then why not
just take the line out of that amp to your soundcard instead. That's
what I did, the results were very acceptable, and I reckoned it was a
lot easier than faffing around with a preamp, and trying to avoid it
introducing hum that I'd already spent so many hours trying to remove.

On Mon, 16 Feb 2015 14:47:58 +0000, Sumatriptan
wrote:

I do have an ancient amplifier with mm phono input (anyone remember
the Texan amp kit?)


Is the Texan phono input stage good enough? I doubt it.


It is RIAA but when I powered my Texan up a few years ago it had some
hum so I'm going to have to 'faff around' to fix it if I use it. Here's
a schematic:

http://www.angelfire.com/sd/paulkemble/sound8h.html

Love this, 'covering 5Hz--500kHz'

The line out is simply a potential divider across the speaker output. I
might try it as per Java Jive's suggestion. Haven't even got the tt yet
so nothing is definite atm.

That's a phones output. There isn't a line output. I'd try taking an
output from pin 6 of IC1 via a resistor - I'd experiment around 4.7k to
see what sounds ok. Ideally you should use a high input impedance buffer
but you might not be wanting to do that (although a cheap dual op-amp
would do it nicely).

Dual 505
 

On 18/02/2015 21:00, mick wrote:


That's a phones output. There isn't a line output. I'd try taking an
output from pin 6 of IC1 via a resistor - I'd experiment around 4.7k to
see what sounds ok. Ideally you should use a high input impedance buffer
but you might not be wanting to do that (although a cheap dual op-amp
would do it nicely).


Good point. Actually, there's already an output from pin 6 with a 4.7k
series resistor...it is the Texan 'Tape output'.


How the low impedance Texan 'phones output' level compares with line
level I don't know right now but a moot point since, initially, I just
want to see if the tt works. I'll simply plug it in and try it with the
Texan amp into a pair of speakers. See what I get and then decide what
to do next. I will need to make up some leads to connect to those
horrible Texan DIN input sockets.

The Dual tt arrived this morning....we were out so awaiting redelivery.

Dual 505
 

On 18/02/2015 17:06, Don Pearce wrote:

**Send it back. Look for a later model.

ABS is not UV stable. There is an alternative called PCABS which is
used instead.


**Thanks for that info. I thought ABS was quite stable.

I've just had a bunch of satellite LNB housings tested - 200 hours and
they where white and powdery. All I expect is some colour shift. I
told them before we started testing what would happen.

d


Hmm...maybe Trevor's experience with disintegrating Dual ABS headshells
is related to cumulative UV exposure of which there is rather more where
he lives than here in Wales.

Awaiting redelivery, we were out when it arrived this morning.

Dual 505
 

On 19/02/2015 10:37 AM, Sumatriptan wrote:
On 18/02/2015 17:06, Don Pearce wrote:

**Send it back. Look for a later model.

ABS is not UV stable. There is an alternative called PCABS which is
used instead.


**Thanks for that info. I thought ABS was quite stable.

I've just had a bunch of satellite LNB housings tested - 200 hours and
they where white and powdery. All I expect is some colour shift. I
told them before we started testing what would happen.

d


Hmm...maybe Trevor's experience with disintegrating Dual ABS headshells
is related to cumulative UV exposure of which there is rather more where
he lives than here in Wales.

Awaiting redelivery, we were out when it arrived this morning.



**I don't know what kind of plastic is used in the headshells. It could
be some other plastic, other than ABS. I can promise you one thing: They
all fail. Every single one. And, contrary to popular (Pommy) belief, not
all Aussies use their turntables in bright Sunlight.

--
Trevor Wilson
www.rageaudio.com.au

---
This email has been checked for viruses by Avast antivirus software.
http://www.avast.com

Dual 505
 

On 18/02/2015 09:16, David B wrote:
"RJH" wrote in message
...
On 17/02/2015 10:28, Sumatriptan wrote:
On 16/02/2015 21:58, Trevor Wilson wrote:


**The headshell falls apart IN EVERY SINGLE ONE. The headshells are
NLA.


Nonsense. I had one with near daily use for over 10 years, with and
without the 1/2" converter. Never missed a beat.

Can't speak for Antipodean imports :-)

Send it back.


I see people discussing fitting of CS505-3 or later headshells. (Not a
trivial task, apparently) But my understanding was that this was
related
to cartridge compatibility and an alternative to the adapter kits. I
haven't seen any online info on the early ones actually falling apart.
If you could point me to such info on the mode of failure I would be
interested.


Don't hold your breath :-)

From the photos, the adapter on this CS505 does not look pretty and
must add some mass and therefore may affect performance. I'll take a
good look when it arrives.

It looks a little clumsy but works surprisingly well - and adds
considerable versatility, of course.

I like the Dual 505. A big thing for me is speed stability, and I
found the Dual good for a belt drive. The best I found was a Pink
Triangle LPT - which considering the Heath Robinson appearance I found
amazing.

I use an old Technics 1200 at the moment - very pleased.


I'm down to one Pink Triangle now (PT1) and a Townshend Rock. I still
think the PT sounds considerably better than a seriously upgraded LP12.
What arm have you got on your SL1200?


The standard arm. Seems fine with either an AT MM or MC. I did have a
1200 with an SME. TBH, can't hear much difference, but the SME looked
nicer :-)

--
Cheers, Rob

Dual 505 update
 

On 16/02/2015 14:04, Sumatriptan wrote:
Yesterday, I got a Dual 505 on Ebay for £77.

Hi all,

More from a born again vinyl user..

When the tt arrived it was packed in the original Dual packing which
would have been fine, except the transit screws were not tightened and
the counterweight was left attached to the tone arm for transit. The 505
counterweight has a plastic stem, unlike later 505-x models. Sure
enough, it was broken and the weight was rattling around in the package.

The sender agreed to compensate me for purchase of a replacement if I
could locate one. A few messages at the Vinyl Engine forum resulted in this:

http://www.dualfred.de/

Alfred and his wife who run this shop in Munich have a large stock of
apparently new Dual and Thorens turntable parts. I saw the exact part I
needed on their website. It took a week to arrive and the brand new
boxed part is labeled 'Original Dual Zubehor'

As I don't have a fully functional preamp and the main point of this
exercise is to get some/all of my collection digitised I decided to
obtain a Behringer phono-USB UFO202 interface to quickly get up and
running.

I haven't done a proper setup yet apart from tracking weight adjustment
to try out the tt for basic operation. All seems well so far, after a
listen via Audacity...except for one issue. There is significant mains
hum which I haven't tried to fix yet.

And that's where I'm at.

Dual 505 update
 

I did rather fear for you. If you can't find a SIMPLE fix without
hacking things around, send it back as not fit for purpose.
Frustrating I know, when you're eager to get going, but you really
don't want the hassle of trying to fix a hum - to convince yourself,
read again what I had to do to get rid of the one on my old deck, you
really don't want to be going anywhere near there if you don't
absolutely HAVE to.

On Thu, 26 Feb 2015 20:09:31 +0000, Sumatriptan
wrote:

There is significant mains
hum which I haven't tried to fix yet.
--
================================================== =======
UK Residents: If you feel can possibly support it
please sign the following ePetition
before closing time of 30/03/2015 23:59:

http://epetitions.direct.gov.uk/petitions/71556
================================================== =======
Please always reply to ng as the email in this post's
header does not exist. Or use a contact address at:
http://www.macfh.co.uk/JavaJive/JavaJive.html
http://www.macfh.co.uk/Macfarlane/Macfarlane.html

Dual 505 update
 

On 27/02/2015 7:09 AM, Sumatriptan wrote:
On 16/02/2015 14:04, Sumatriptan wrote:
Yesterday, I got a Dual 505 on Ebay for £77.

Hi all,

More from a born again vinyl user..

When the tt arrived it was packed in the original Dual packing which
would have been fine, except the transit screws were not tightened and
the counterweight was left attached to the tone arm for transit. The 505
counterweight has a plastic stem, unlike later 505-x models. Sure
enough, it was broken and the weight was rattling around in the package.

The sender agreed to compensate me for purchase of a replacement if I
could locate one. A few messages at the Vinyl Engine forum resulted in
this:

http://www.dualfred.de/

Alfred and his wife who run this shop in Munich have a large stock of
apparently new Dual and Thorens turntable parts. I saw the exact part I
needed on their website. It took a week to arrive and the brand new
boxed part is labeled 'Original Dual Zubehor'

As I don't have a fully functional preamp and the main point of this
exercise is to get some/all of my collection digitised I decided to
obtain a Behringer phono-USB UFO202 interface to quickly get up and
running.

I haven't done a proper setup yet apart from tracking weight adjustment
to try out the tt for basic operation. All seems well so far, after a
listen via Audacity...except for one issue. There is significant mains
hum which I haven't tried to fix yet.

And that's where I'm at.

**The hum is likely to be one of the following:

* Dodgy RCA connectors/leads.
* Dodgy arm wiring (unlikely).
* Dodgy headshell (most likely).

If it is the headshell (the detachable bit that hold the cartridge),
send it back.


--
Trevor Wilson
www.rageaudio.com.au

---
This email has been checked for viruses by Avast antivirus software.
http://www.avast.com