Behringer EP1500 - EP2500
Frederic Gelinas
small PA situation or to run the tops when bi-amping. I also use it as
a subwoofer amp in my home theater setup (I like to have lots of
headroom). I am building an enclosed rack to put all the amps and
stuff for my home theater. Since I will put the Behringer in that
rack, I did a recoomended modification to it: I installed a quieter
fan. The original fan is really loud for a home setup.
I noticed that the air flow is from the back to the front. That's good
to me. But why the hell is the air filter at the front then? All the
dust can come in, but can't escape... great idea!
I'm I missing something there?
--
Frederic Gelinas
John O
"Frederic Gelinas" <frederic...@hotmail.com> wrote in message
news:zHmUj.74985$612....@read1.cgocable.net...
It's not just a bass amp, a PA, and a LFE amp....it's also an air filter.
I wonder if you could just turn the fan around?
-John O
Rupert
wrote:
1st, if the new fan you put in is a lower CFM, which it probably is
since it's more quiet, that's bad as the amp will not be able to cool
efficiently when used in high output situations. Second, are you
certain the air flow is back to front and that you installed the fan
to blow in the correct direction? I don't own the amp so I don't know
the correct airflow direction, but I'm sure George G. can tell you.
Rupert.
Frederic Gelinas
> 1st, if the new fan you put in is a lower CFM, which it probably is
> since it's more quiet, that's bad as the amp will not be able to cool
> efficiently when used in high output situations. Second, are you
> certain the air flow is back to front and that you installed the fan
> to blow in the correct direction? I don't own the amp so I don't know
> the correct airflow direction, but I'm sure George G. can tell you.
The lower CFM can be a problem, I know. I am not going to use it in
any situation where it will be driven hard. It will probably retire in
my home theater for the rest of its life.
The back to front airflow is as advertised by Behringer. It's not
related to any mod I made. I shouldn't even have talked about it...
--
Frederic Gelinas
Mickey
Is it possible that there is a filter on the intake side somewhere?
The ducting in the interior photos I have seen indicates that it doesn't
just pump air over the components.
(I own one, but really don't want to take it out of the rack to
look...)
--
Mickey
Making the simple complex, that is easy -- anyone can do that.
But to make the complex simple, awesomely simple, that is
true creativity. -- Charles Mingus
Ron(UK)
> On 2008-05-07, Frederic Gelinas <frederic...@hotmail.com> wrote:
>> I am mainly using my EP1500 as a Bass rig poweramp. I also use it in
>> small PA situation or to run the tops when bi-amping. I also use it as
>> a subwoofer amp in my home theater setup (I like to have lots of
>> headroom). I am building an enclosed rack to put all the amps and
>> stuff for my home theater. Since I will put the Behringer in that
>> rack, I did a recoomended modification to it: I installed a quieter
>> fan. The original fan is really loud for a home setup.
>>
>> I noticed that the air flow is from the back to the front. That's good
>> to me. But why the hell is the air filter at the front then? All the
>> dust can come in, but can't escape... great idea!
>>
>> I'm I missing something there?
>>
>
> Is it possible that there is a filter on the intake side somewhere?
> The ducting in the interior photos I have seen indicates that it doesn't
> just pump air over the components.
>
> (I own one, but really don't want to take it out of the rack to
> look...)
>
They blow air mainly through the hollow heatsinks tho there is quite a
large gap betwixt fan and sinks
Ron(UK)
--
Lune Valley Audio
Public Address Systems
Hire Sales Maintenance
www.lunevalleyaudio.com
Frederic Gelinas
> Is it possible that there is a filter on the intake side somewhere?
There is no filter on the intake side. That is my point. I think I'll
remove the exhaust filter to allow dust to come out...
--
Frederic Gelinas
Frederic Gelinas
http://fgelinas.homeip.net/www/interieurEP2500.jpg
--
Frederic Gelinas
Joe L
I don't know if the fan is installed backwards, or just designed with the
wrong airflow. But *could* you just take the screws/bolts out and reverse
the fan? Just looking at the pic you posted, it seems to be designed for
the airflow to go the opposite way. Maybe email Beh tech support to ask
them the question of whether it's installed wrong, or designed wrong.
Btw, if it is installed wrong, I'd ask for a NEW amp, of course to be
supplied from the save vendor you got that one from. Cause you didn't pay
for a factory second (if that's the case).
JL
Rupert
wrote:
I'd take the filter out either way. I've always pulled the foam covers
off the fans on my old Crest Pro amps as when they do clog, you're
screwed. It's infinitely better to have the dust blow through and get
the amps dirty inside then to have no airflow at all from clogged
filters.
Rupert
Frederic Gelinas
> Maybe email Beh
> tech support to ask them the question of whether it's installed
> wrong, or designed wrong.
From their website, in the features table :
"Back-to-front" ventilation system including air filter
They are designed that way.
--
Frederic Gelinas
Tim Perry
"Rupert" <foods...@linkline.com> wrote in message
news:ab443172-8fee-47d0...@l42g2000hsc.googlegroups.com...
Rupert
Hey! it keeps the rack from getting dirty.
Joe L
Great, so if you need to cool down during a gig you won't get any dust in
your face.LOL
I'd still ask support why they designed it like that and if it would make
sense to flip the fan around or take out the filter. Either way, it needs to
be cleaned out periodically like any gear that has a fan.
JL
Eeyore
Frederic Gelinas wrote:
> I am mainly using my EP1500 as a Bass rig poweramp. I also use it in
> small PA situation or to run the tops when bi-amping. I also use it as
> a subwoofer amp in my home theater setup
How on earth do you put up with the fan noise ?
Graham
Frederic Gelinas
Like I said before, I changed the fan for a quieter one.
--
Frederic Gelinas
Eeyore
Frederic Gelinas wrote:
But even so. Any fan noise is highly intrusive.
Graham
Frederic Gelinas
> But even so. Any fan noise is highly intrusive.
I know, I should have keep the 2 Bryston 4B, but I needed the money.
There is already the projector fan, which is already producing a
background noise... I haven't found a projector without a fan. You
can get quiet ones though.
--
Frederic Gelinas
John O
"Rupert" <foods...@linkline.com> wrote in message
news:ab443172-8fee-47d0...@l42g2000hsc.googlegroups.com...
Rupert
________________________
Same here. All that filter is doing is trapping junk that would normally be
blown out the front. It's a dumb design, the filter was probably tossed in
to give them another feature bullet-point on the brochure.
The filter also reduces airflow, and a choked fan is noisier than one
running with no back pressure.
-John O
bob urz
its interesting you talk about fan noise. When they built our new
concert hall, they wanted moving lights. But most movers have fans
and are noisy. So they bought VL1000's without the ballast and
controlled the stock lamps through external dimmers. Well, in theory
that was all good. Until you moved the light and you heard the servo
motors singing....
Bob
0jun...@bellsouth.net
On 2008-05-09 johnos...@lottaspamheathkit.com said:
>I'd take the filter out either way. I've always pulled the foam
>covers off the fans on my old Crest Pro amps as when they do clog,
>you're screwed. It's infinitely better to have the dust blow
>through and get the amps dirty inside then to have no airflow at
>all from clogged filters.
then.
>Same here. All that filter is doing is trapping junk that would
>normally be blown out the front. It's a dumb design, the filter was
>probably tossed in to give them another feature bullet-point on the
>brochure.
YEp, got to impress!
>The filter also reduces airflow, and a choked fan is noisier than
>one running with no back pressure.
HEy that noisy fan's even more impressive! "WOw man that's
gotta be one big assed amp dude! Listen to that fan. One
honkin' fan to cool that puppy down!"
Maybe that's what that dude needed for his big honkin'
amplifier that was so many kw he was telling us about. What
was it, a Melhart?
wE're talking the same principle as the big jacked up pickup
with the loud pipes. Big and loud impresses, and they like
that.
I bought a PAS power amplifier because it was cheap and it
would run a couple monitor wedges many years ago. gUnmetal
gray case, big noisy fan. Iirc you could drive that puppy
into a 2 ohm load though and it didn't break a sweat all
night long.
Richard webb,
replace anything before at with elspider
ty
becomes moot...
ty
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