Volume matching...how do you do it?? (BD-Design)
by jdubs 
, Wednesday, January 25, 2006, 06:11 (6665 days ago)
A very fundamental question:
How do you match the volume from bass cabinets with that of much higher sensitivity horns?
I've got AER MD-3's with 150's would love to hear what everyone is doing.
Right now I've got a pair of JBL 4648 theater bass cabinets (100db.) and they are being fed power from an amplifier who's gain I had increased quite a bit, just so they can keep up with the horns. Btw, my preamp has dual outputs...one set feeding an amp which then feeds the horns...the other preamp outs feed a 160hz filter which then goes to the bass cabinet amp which then goes to the bass cabinets.
I REALLY like the JBL...those drivers are awesome and seem to complement the Oris horns very well.
I'm sure there's an easier way of level matching....I just prefer not to mess with the signal going to the horns if I can help it.
Thanks all!
Volume matching...how do you do it??
by Bert , Wednesday, January 25, 2006, 12:40 (6664 days ago) @ jdubs
Hi,
How do you match the volume from bass cabinets with that of much higher
sensitivity horns?
See: http://www.bd-design.nl/index.html?lang=en-uk&target=d89.html
Your amp driving the horns should have a high SN-ratio though to prevent hum coming from the bass.
Or you can wait for the digital filter with room EQ (in the pipe-line) with active stage so that you can "boost" the bass while using your pre-amp output.
Ciao,
Bert
--
BD-Design - Only the Best!
Digital filter
Can you share more about the new digital filter?
Frode
Digital filter
by Bert , Tuesday, January 31, 2006, 23:11 (6658 days ago) @ Frode
Hi Frode,
Can you share more about the new digital filter?
Sure! It will be a device with filter pre-sets for all BD-Design speaker systems having a high- and low voltage input. This way the bass can be connected as usual i.e. signal tapped from the horns - high input or from a pre-amp - low input.
The digital EQ is done with the help of a PC and in-room measurements giving the option to get deeper and flat bass (or whatever setting you prefer) at the listening postion including phase corrections for optimal integration with the horns. Several own settings can be saved into the device as pre-sets also...
The device can only be used to optimise the bass performance though, the signal going to the horns will or should not be affected in any way.
Price tag will be close to 850 Euro (excluding VAT) but includes all hard- and software needed.
Ciao,
Bert
--
BD-Design - Only the Best!
Digital filter
Interesting! Any idea when it will be available?
Frode
Digital filter
by Bert , Tuesday, January 31, 2006, 23:44 (6658 days ago) @ Frode
Interesting! Any idea when it will be available?
Hopefully around Spring this year...
Ciao,
Bert
--
BD-Design - Only the Best!
Digital filter
by Gasper , Wednesday, February 01, 2006, 09:53 (6658 days ago) @ Bert
Dear Bert,
Can't wait :biglol:
But the price is not so nice,...:cry:
Regards,
Gasper.
Digital filter
by Gasper , Wednesday, February 01, 2006, 15:05 (6657 days ago) @ Frode
Helo all!
A little bit of education for all of us:
http://www.dsptutor.freeuk.com/dfilt2.htm
Regards,
Gasper.
Volume matching...how do you do it??
hi Bert
is this filter only for a pc music setup
or is also for a normal cdplayer (dac) amplfier system
regards Robert
Volume matching...how do you do it??
by Bert , Saturday, February 11, 2006, 22:58 (6647 days ago) @ robert
Hi Robert,
is this filter only for a pc music setup or is also for a normal cdplayer (dac) amplfier system
Its independent of the source. It is a device connected to a pre-amp (the outputs) or the speaker connections of the main amp.
Ciao,
Bert
--
BD-Design - Only the Best!
Volume matching...how do you do it??
hi Bert
i mean my system a passive volume control
just a main amp
and the bd30 connected to the speakers
i ask another question in break the silence can you give me also an answer?
Volume matching...how do you do it??
by Bert , Sunday, February 12, 2006, 13:23 (6646 days ago) @ robert
Hi Robert,
i mean my system a passive volume control just a main amp and the bd30 connected to the speakers.
The digital device will replace the passive line filter as it has its own digital filter built-in.
Ciao,
Bert
--
BD-Design - Only the Best!
Volume matching...how do you do it??
Hi Robert,
i mean my system a passive volume control just a main amp and the bd30
connected to the speakers.
The digital device will replace the passive line filter as it has its own
digital filter built-in.Ciao,
Bert
its not clear
do i need a pc with this new filter?
thus is the other question about the filter
i think you forgot it
it is in the break the silence topic
hello Bert
i tought it was the thirth one?
what is the thirth doing then?
the filter is now 1 /0,15 /0,1 /00,1
there was an upgrade later to chance the value 0,1 into 0,15
if you change the first cap are there phase problems then?
and what is a good value yo try with ?
the phase is very good now a little deeper bass would be nice
regards Robert
Volume matching...how do you do it??
by Bert , Sunday, February 12, 2006, 22:56 (6646 days ago) @ robert
Hi Robert,
do i need a pc with this new filter?
Not while playing (with pre-sets) or when you do not want to EQ the room. The PC is only needed to measure the room response, EQ where needed and upload the new settings to the device.
i tought it was the thirth one? what is the thirth doing then?
Yep, I did forget that one. For just deeper bass you need to alter the first capacitor. The third capacitor is doing a bit the same but also affects the lower midrange.
the phase is very good now a little deeper bass would be nice
If this is the case then do not change the third capacitor, only the first one with 20-50% higher value. While increasing this value you'll also need to increase the volume of the BD30 to compensate the loss in gain.
Ciao,
Bert
--
BD-Design - Only the Best!
Volume matching...how do you do it??
okay thank you Bert
what do you think is is the best phase correct filter
the 1 / 0,15 / 0,1 / 0,01
or the 1 / 0,15 / 0,15 / 0,01
i am not shure what i like more the 2 options are both good
wich measures better?
the new digital filter is a good upgrade for the Oris i think
rooms are evil sometimes
is this filter more like an behringer ultracurve sort of ?
Robert
Volume matching...how do you do it??
by Bert , Monday, February 13, 2006, 09:44 (6646 days ago) @ robert
Hi Robert,
what do you think is is the best phase correct filter
the 1 / 0,15 / 0,1 / 0,01
or the 1 / 0,15 / 0,15 / 0,01
In my system I like the first one better.
i am not shure what i like more the 2 options are both good
wich measures better?
These value changes are hardly measurable and mostly detectable while lstening. If you like both then perhaps you could go in between and use a 0,12 for the third capacitor.
is this filter more like an behringer ultracurve sort of ?
It is something highly more sophisticated than that! The device includes a digital filter and you can EQ the amplitude and phase with a resolution of 0,1Hz to 0.1dB flat if you like! Not very usefull to work in such a high resolution though but it gives the option to reduce or kill the nasty high Q resonance peaks very precise...
You can also EQ for deeper bass with it. The system is pretty flexible but you do need to understand what you're doing though. EQ flat down to 10Hz (as an example) or EQ a room dip with +18dB will surely limit the power of the BD30 and the BD15 making it possible to damage it or even reduce the overall performance of the system.
Ciao,
Bert
--
BD-Design - Only the Best!