Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread jaysung

Yep, read the section in the ownersguide. Problem is it doesn't state
where exactly the jumpers a set for 0 -10 -20 -30db.
Consequently I don't know if the structures standing out at both sides
are jumpers set onto pins or anything else. If the where anything else
pulling at them to remove them might not be a good idea.
The jumpers are arranged in a left to right sort of way. That means
there are two rows of jumpers running from beneath the left channel to
the right.


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread Fifer

Owners Guide, p24 (index says 23 but the detail and photo are on p24).
It sounds like you have identified the correct jumpers (near the rca
connectors).


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread Fifer

There are six pairs of pins (three for each channel, left and right) and
two jumpers (one for each channel). At the default setting (the two
outside pairs jumpered), there is no attenuation. Moving each jumpers
in to the next pair provides 10bB attenuation, the next pair 20 dB and
the centre pair 30 bB attenuation. It's arranged as below:

0bB  10bD  20dB  30 dB   30bB  20dB  10dB  0dB
¦

Does that help?


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread jaysung

Yep, helps. Definitely. One thing to clarify though. The jumpers are not
of the sort we know from ide drives are they? The are much bigger
standing out by 1/3 inch or so. Right?


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread Fifer

Sunjay, I just read your post properly. The jumpers have 'handles' on
top which make them stick out above the pairs of pins. 1/3rd of an inch
seems about right. You just pull them up by the handle then place them
on the pair which give the attenuation you want.


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread Fifer

I have to confess that I don't know. I haven't taken the lid off my
Transporter. I'm going only by the detail in the picture. I'm sure
someone else will jump in to confirm soon


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread Mark Lanctot

There's a photo here which I'm consulting:
http://photos.lam.ws/gallery/1930618/4/98134925/Large  Obviously it
doesn't help you, jaysung, but it may allow someone beside me to
describe it better than I can.

Anyway, the jumpers are the same used on new motherboards,
finger-friendly jumpers with extended handles.  The handle is narrower
than the base of the jumper.

It probably would feel like an IDE connection, just a row of pins.  The
jumpers are installed from the factory at the extreme left and right.

It should be very close to the back, there are two solid-state caps to
the left and right of the row.  Just behind them is a row of
surface-mount resistors.


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread jaysung

Hello,
Thanks to you both. One question came to me when tinkering arround.
What if I set 10 and 20db at the same time for the same channel. Would
I get the average i.e 15db for the power traveling across two
resistors?
I used 20db attenuation and still it would wake my daughter or blow my
ears when I turn my amp to 0db.
Also strange:
tp at -45db and amp set to 0db is not as loud as
Amp at -45db and transporter at full volume.

Anyway, the reason why I experiment is that I have heard an Audionet
poweramp m1v2 recently. It sounded far more alive and present than the
Marantz even over xlr. When I bought the tp and the Marantz amp I
thought xlr was to be used when it is available. Now I see that this
might be a false generalisation for the Audionet m1v2 only has rca
connections. I am somewhat confused now.


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread Fifer

I don't know jaysung, but I doubt it. Sean would be able to advise
better.


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Re: [slim] Attenuation of TP help where are the jumpers?

2007-11-09 Thread SuperQ

jaysung;241517 Wrote: 
 Hello,
 Thanks to you both. One question came to me when tinkering arround.
 What if I set 10 and 20db at the same time for the same channel. Would
 I get the average i.e 15db for the power traveling across two
 resistors?
 I used 20db attenuation and still it would wake my daughter or blow my
 ears when I turn my amp to 0db.
 Also strange:
 tp at -45db and amp set to 0db is not as loud as
 Amp at -45db and transporter at full volume.
 
 Anyway, the reason why I experiment is that I have heard an Audionet
 poweramp m1v2 recently. It sounded far more alive and present than the
 Marantz even over xlr. When I bought the tp and the Marantz amp I
 thought xlr was to be used when it is available. Now I see that this
 might be a false generalisation for the Audionet m1v2 only has rca
 connections. I am somewhat confused now.

I don't think you can use more than one jumper per channel at a time. 
I could be wrong, I don't know how it's wired.

The jumpers don't change the XLR connection.

I would get a SPL meter and verify level when comparing two amplifiers.


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