Guest
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 Posted:
Sun Nov 13, 2005 5:42 am Post subject:
Re: Dahlquist DQ-20 crossover upgrades ? |
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"DMHenrie" <DMHenrie@Hotmail.com> wrote in message
news:dl3gr007dr@news3.newsguy.com...
| Quote: | Has anyone out there done the Dahlquist DQ-20 capacitor and coil upgrades
that Regnar supplies.
I was wondering if they are worth the money, and is the difference
noticable, and how?
Dave
|
So far as anybody has been able to objectively demonstrate, there is no such
thing as a performance upgrade from using more expensive caps and coils in
crossovers. As a sometime DIY speaker builder I can tell that this has been
my experience as well.
Another thing to consider is why would Dahlquist use parts that don't do
what they are supposed to do? How could they have gained a reputation as a
maker of fine speakers by using parts that didn't perform properly?
The values chosen and tested by the people who design and build speaker
systems are there precisely because they divide the frequencies as needed to
get the performance the manufacturer needed in order to get the performance
that they advertised.
If you really feel inquisitive and brave, and assuming you have the skill
required, get the parts that you think are an upgrade and construct the new
xover. Then disconnect the old one and using the speaker that still has the
original xover in place, find something to listen to that is recorded in
mono or just use one channel of a stereo recording and do a comparison. You
must match the spl level to within .1 dB and have someone switch between the
old and new versions without you knowing which one is which at any given
time.
If you don't feel qualified to do any of the above, just forget it. It's a
waste of time other than as a learning experience.
Yes you will find that components used in xovers don't always conform to the
standards that you might have been told you should look for, but they will
conform to the needs of the design. There are no magic caps and coils,
there are only caps and coils that do work in the design. If they work in
the design, they work as well as they possibly can. |
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DMHenrie
Guest
|
| Posted:
Mon Nov 14, 2005 12:21 am Post subject:
Re: Dahlquist DQ-20 crossover upgrades ? |
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Thanks, I was kind of under the same suspicions. I do know that over time
componnts, such as capacitors can breakdown over time. I am also awar that
over the past 15 years, technological improvments have been made to increase
efficiency and design. Regnar (for those who don't know), does most of the
Old Dahlquist business concerning repairs, etc since the original Dahlquist
is really no more. While I don't doubt that the crossovers could be upgraded
with new technology, I dont know if the cost of about $300 for the cap and
coil upgrades are worth the cost. As far as the comparison side by side, I
can't imagine myself paying for the components to build one crossover
(technically competent though I am), just for sheets and gigggles. And
probably with my 50 year old ears, couldn't tell the difference if there was
one. Not only do you have the spls to worry about, but the room acoustics
from one point to another could enhance or mask a difference. I also
suppose, that if there were other people on this group that HAS done this
upgrade for the $300+ dollars, of course they will say it was the best money
spent since they bought their last can of boston beans.
SO, I guess, why did I ask this at all? Hmmmm
Thanks
<nyob123@peoplepc.com> wrote in message
news:dl630t02nn4@news2.newsguy.com...
| Quote: | "DMHenrie" <DMHenrie@Hotmail.com> wrote in message
news:dl3gr007dr@news3.newsguy.com...
Has anyone out there done the Dahlquist DQ-20 capacitor and coil upgrades
that Regnar supplies.
I was wondering if they are worth the money, and is the difference
noticable, and how?
Dave
So far as anybody has been able to objectively demonstrate, there is no
such
thing as a performance upgrade from using more expensive caps and coils in
crossovers. As a sometime DIY speaker builder I can tell that this has
been
my experience as well.
Another thing to consider is why would Dahlquist use parts that don't do
what they are supposed to do? How could they have gained a reputation as
a
maker of fine speakers by using parts that didn't perform properly?
The values chosen and tested by the people who design and build speaker
systems are there precisely because they divide the frequencies as needed
to
get the performance the manufacturer needed in order to get the
performance
that they advertised.
If you really feel inquisitive and brave, and assuming you have the skill
required, get the parts that you think are an upgrade and construct the
new
xover. Then disconnect the old one and using the speaker that still has
the
original xover in place, find something to listen to that is recorded in
mono or just use one channel of a stereo recording and do a comparison.
You
must match the spl level to within .1 dB and have someone switch between
the
old and new versions without you knowing which one is which at any given
time.
If you don't feel qualified to do any of the above, just forget it. It's
a
waste of time other than as a learning experience.
Yes you will find that components used in xovers don't always conform to
the
standards that you might have been told you should look for, but they will
conform to the needs of the design. There are no magic caps and coils,
there are only caps and coils that do work in the design. If they work in
the design, they work as well as they possibly can.
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