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From: Leon on 24 Oct 2009 22:52
On Sat, 24 Oct 2009 08:28:12 -0400, "McSteve" <mcsteve1350x(a)verizon.net> wrote:

><Leon(a)nospam.com> wrote:
>> Yes, not sure iif he's set to mono or stereo, I'm not the DJ, but
>> essentialy,
>> yes.
>>
>
>Wait a minute...
>
>You said this in your first post:
>
>> Right now we have 2 - 18" subs each driven by a 1450 amp in bridge mode.
>> The
>> spks are 8 ohm so its a pretty good match.
>>
>
>This seems to say that you have two 1450s, and each one is driving 1 box
>in bridge mode. Whether the DJ is giving you a mono or stereo feed has
>nothing to do with it. All that matters is the configuration of the amp, and
>the load it's driving.
>Which crossover are you using, and does it have a 'mono sum' output?
>If it does, that's what you should be feeding your sub amps with.

I can't remember the name of the xover, but I'll check it.

From: Tim S Kemp on 25 Oct 2009 10:57

<Leon(a)nospam.com> wrote in message
news:go67e5he2e1er50bm7e3vsv3rp0tomgvar(a)4ax.com...

> 18" Eminence custom made.
>
>> Sounds underpowered to me, 800w into 2x18.
>
> Read the post again, each has it's own amp.
>
> Sound great, BTW.

I'm sure it does.

800w into a single 18 is more what I'd expect. Have you got an measurements
from the boxes, what are they tuned to work to? Many custom boxes can drop
off hard at the low end, you may want to add a steep high pass filter, start
at about 35hz then work upwards, as you could be bleeding a lot of power
into making not a lot of noise. Also maybe look at your crossover slopes,
when positioning subs away from the tops a harder slope may help definition.

As others have said, to make your subs sound less postional move the
crossover point down, until it sounds right. If you're covering 30-120hz
that's the bottom two octaves, and probably as much as you'd want them to
cover.






>


--
And remember kids, RAID is safe and the UPS never fails, and Cisco routers
never develop intermittent faults, and external hard drives never fail with
only a month's use, and the DNS is reliable and resilient, and the
mailserver is protected from all forms of attack, and the replacement UPS
will be reliable as the first one was an unusual failure. No one will ever
guess /that/ password, the aircon can't fail 285V is close enough to 230,
and the QoS on the PWan won't obstruct the tagged traffic.

From: McSteve on 25 Oct 2009 11:05
<Leon(a)nospam.com> wrote:
> 18" Eminence custom made.
>

Which ones? Eminence makes a whole range of 18s.
From low power stamped frame budget drivers, to
cast frame heavy duty subs.

--
Steve <snip> McQ


From: Leon on 25 Oct 2009 19:33
On Sun, 25 Oct 2009 14:57:56 -0000, "Tim S Kemp" <news(a)timkemp.karoo.co.uk>
wrote:

>
><Leon(a)nospam.com> wrote in message
>news:go67e5he2e1er50bm7e3vsv3rp0tomgvar(a)4ax.com...
>
>> 18" Eminence custom made.
>>
>>> Sounds underpowered to me, 800w into 2x18.
>>
>> Read the post again, each has it's own amp.
>>
>> Sound great, BTW.
>
>I'm sure it does.
>
>800w into a single 18 is more what I'd expect. Have you got an measurements
>from the boxes, what are they tuned to work to?

They are built to Eminence plans, 7 foot, 4 port reflex box tuned to 38hz.

> Many custom boxes can drop
>off hard at the low end, you may want to add a steep high pass filter, start
>at about 35hz then work upwards, as you could be bleeding a lot of power
>into making not a lot of noise. Also maybe look at your crossover slopes,
>when positioning subs away from the tops a harder slope may help definition.

We have the filters on the 1450s set to 30hz and he uses a filter on the Xone
mixer as well.

>As others have said, to make your subs sound less postional move the
>crossover point down, until it sounds right. If you're covering 30-120hz
>that's the bottom two octaves, and probably as much as you'd want them to
>cover.
>

Yes, will try that.

From: Leon on 25 Oct 2009 19:37
On Sun, 25 Oct 2009 10:05:13 -0500, "McSteve" <mcsteve1350x(a)verizon.net> wrote:

><Leon(a)nospam.com> wrote:
>> 18" Eminence custom made.
>>
>
>Which ones? Eminence makes a whole range of 18s.
>From low power stamped frame budget drivers, to
>cast frame heavy duty subs.

Sigma Pro. I've built lots of these systems and people love them. These are 7'
four port reflex boxes, I've also made 5'.

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