ROTEL RA-1062 enters protection mode at half volume contro..

Archived from groups: rec.audio.high-end (More info?)

Reducing the signal level or dynamic range of the CD is the same as
turning down the volume level on the amp. The amp can't handle the
loudspeakers load and was a poor choice. You can replace the speakers
with something more efficient and with a more stable, higher impedance
or get another, more capable amplifier. Although I am not a fan of the
B&W sound, the speakers are not the weakest link there.
-Bill
www.uptownaudio.com
Roanoke VA
(540) 343-1250


"Michael Kiss" <mike@axtools.com> wrote in message
news:cg61dn0g3t@news4.newsguy.com...
> Hello everybody,
>
> Four months ago I purchased a Rotel RA-1062 and a pair of
> Bowers-Wilkins 604-S3 speakers. To start with something that may be
a
> problem, the amplifier is rated 2x60, while the speakers are 200
each.
> The speakers are single-wired with Monster cables.
>
> Okay, as sources, these were not upgraded up to now - I have a
> Technics AZ-7 casette player (a very good-sounding machine,
film-head
> technology etc) and a non-fantastic-at-all Technics CD-changer, but
> which worked with no problem up to now.
>
> The integrated amplifier barely has 30 hours on it. For two weeks
now
> (having moved my equip in a basement, which is cold and dry btw) I
> started listening at half-volume control position. Well, on certain
> (but enough) CD-s the amplifier appears to enter protection for 3-10
> seconds that is the sound completely stops, then resumes for a few
> seconds, then stops again and so on until I reduce the volume. On
> certain tracks I can reproduce this on the volume control turned to
> hour 11 for example, so significantly less than half volume.
>
> Now, I tried to do some investivation on my own. Overheating? Well,
it
> sits directly on the cold floor, nothing on top of it. I do not have
a
> power conditioner, just regular grounded outlet. Does the CD skip
> (because at the first moment this is what I thought of)? I've
changed
> the source to tape, the same interruptions appeared (listening to
some
> heavily orchestrated music like "No Doubt" for example).
>
> Now the tricky part. I tried running the CD changer through the AZ-7
> tape player, through monitoring, and I remarked the CD-s on which
the
> Rotel enters protection apparently are recorded with a higher signal
> level (the signal level indicators on the tape player's monitoring
> system stay on the red area 80% of the time). Manually decreasing
the
> signal on the tape monitor (which decreases the signal level that's
> fed on to the amplifier appeared to cure the problem! no more
> interruptions! I could go near the maximum with the volume control
> with sound levels apparently higher than those obtained before when
> the volume control was at half position but the signal was not
> decreased by the tape monitor.
>
> What can that be? How am suppose to cure it? Could it be something
> with the preamplifier section of the integrated, which does not
level
> (should that be done???) the signal it is fed with? Or with the
power
> amplification section? Do you think switching to a Rotel pre+power
> (RC-1070 + RB-1070) will cure this? Of course, I could also replace
> the old Technics CD-changer with the Rotel CD-player (1072), but I
> don't feel like spending when I'm not certain it will work, plus it
> will continue to fail while fed with signal from the AZ-7 casette
> player.
>
> Well, I hope somebody here can enlighten me. Thank you!
>
> Michael.

Archived from groups: rec.audio.high-end (More info?)

Thanks everybody for their helpful answers - I've already discussed
with my dealer and he will replace the 1062 (2x60W) with a pre+power
RC1070+RB1070, 2x130 - it's definitely worth the $300 difference. I
think that will suffice, at least for now :-) since unfortunately I
can't afford the RB1080 power (2x200) at this moment.

I think somebody asked - both the speakers and the amplifier powers
were rated at 8 ohms.

Mike.

Uptown Audio <uptownaudio@rev.net> wrote in message news:<cg81dr015ur@news3.newsguy.com>...
> Reducing the signal level or dynamic range of the CD is the same as
> turning down the volume level on the amp. The amp can't handle the
> loudspeakers load and was a poor choice. You can replace the speakers
> with something more efficient and with a more stable, higher impedance
> or get another, more capable amplifier. Although I am not a fan of the
> B&W sound, the speakers are not the weakest link there.
> -Bill
> www.uptownaudio.com
> Roanoke VA
> (540) 343-1250
>
>
> "Michael Kiss" <mike@axtools.com> wrote in message
> news:cg61dn0g3t@news4.newsguy.com...
> > Hello everybody,
> >
> > Four months ago I purchased a Rotel RA-1062 and a pair of
> > Bowers-Wilkins 604-S3 speakers. To start with something that may be
> a
> > problem, the amplifier is rated 2x60, while the speakers are 200
> each.
> > The speakers are single-wired with Monster cables.
> >
> > Okay, as sources, these were not upgraded up to now - I have a
> > Technics AZ-7 casette player (a very good-sounding machine,
> film-head
> > technology etc) and a non-fantastic-at-all Technics CD-changer, but
> > which worked with no problem up to now.
> >
> > The integrated amplifier barely has 30 hours on it. For two weeks
> now
> > (having moved my equip in a basement, which is cold and dry btw) I
> > started listening at half-volume control position. Well, on certain
> > (but enough) CD-s the amplifier appears to enter protection for 3-10
> > seconds that is the sound completely stops, then resumes for a few
> > seconds, then stops again and so on until I reduce the volume. On
> > certain tracks I can reproduce this on the volume control turned to
> > hour 11 for example, so significantly less than half volume.
> >
> > Now, I tried to do some investivation on my own. Overheating? Well,
> it
> > sits directly on the cold floor, nothing on top of it. I do not have
> a
> > power conditioner, just regular grounded outlet. Does the CD skip
> > (because at the first moment this is what I thought of)? I've
> changed
> > the source to tape, the same interruptions appeared (listening to
> some
> > heavily orchestrated music like "No Doubt" for example).
> >
> > Now the tricky part. I tried running the CD changer through the AZ-7
> > tape player, through monitoring, and I remarked the CD-s on which
> the
> > Rotel enters protection apparently are recorded with a higher signal
> > level (the signal level indicators on the tape player's monitoring
> > system stay on the red area 80% of the time). Manually decreasing
> the
> > signal on the tape monitor (which decreases the signal level that's
> > fed on to the amplifier appeared to cure the problem! no more
> > interruptions! I could go near the maximum with the volume control
> > with sound levels apparently higher than those obtained before when
> > the volume control was at half position but the signal was not
> > decreased by the tape monitor.
> >
> > What can that be? How am suppose to cure it? Could it be something
> > with the preamplifier section of the integrated, which does not
> level
> > (should that be done???) the signal it is fed with? Or with the
> power
> > amplification section? Do you think switching to a Rotel pre+power
> > (RC-1070 + RB-1070) will cure this? Of course, I could also replace
> > the old Technics CD-changer with the Rotel CD-player (1072), but I
> > don't feel like spending when I'm not certain it will work, plus it
> > will continue to fail while fed with signal from the AZ-7 casette
> > player.
> >
> > Well, I hope somebody here can enlighten me. Thank you!
> >
> > Michael.