Speaker switching..

[Beauchampy]

Ok, I have the following setup;

Mackie HR824s, Yamaha NS-10s powered by a Crown D60, AKG LSM50s powered
by a Samson Servo, and a Hi-Fi setup across the room powered by a NAD C370.

I need some sort of clever way to switch between these four sets of
speakers and have the volumes all at relatively the same levels!

I'd also like to keep Balanced lines going to the devices that will take
them.. The hi-fi setup will naturally be unbalanced and is a good 5m or
so away.

Suggestions welcome.

Beauchampy

[Scott Dorsey]

Beauchampy > wrote:
>Ok, I have the following setup;
>
>Mackie HR824s, Yamaha NS-10s powered by a Crown D60, AKG LSM50s powered
>by a Samson Servo, and a Hi-Fi setup across the room powered by a NAD C370.
>
>I need some sort of clever way to switch between these four sets of
>speakers and have the volumes all at relatively the same levels!

Get a switchbox to switch the line level signals. Play a 1KC tone. Adjust
the gain controls with an SPL meter at the mix position so that all three
have the same levels.

>I'd also like to keep Balanced lines going to the devices that will take
>them.. The hi-fi setup will naturally be unbalanced and is a good 5m or
>so away.

So you want a balanced switchbox. You can build one or buy one. Markertek
certainly sells some.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Don Pearce]

On 24 Aug 2006 11:00:19 -0400, (Scott Dorsey) wrote:

>Beauchampy > wrote:
>>Ok, I have the following setup;
>>
>>Mackie HR824s, Yamaha NS-10s powered by a Crown D60, AKG LSM50s powered
>>by a Samson Servo, and a Hi-Fi setup across the room powered by a NAD C370.
>>
>>I need some sort of clever way to switch between these four sets of
>>speakers and have the volumes all at relatively the same levels!
>
>Get a switchbox to switch the line level signals. Play a 1KC tone. Adjust
>the gain controls with an SPL meter at the mix position so that all three
>have the same levels.
>

A tone to get speakers to the same level? You'll be lucky if you get
within 20dB even in a good room. You need broadband noise - pink is
probably best for this job.

d

--
Pearce Consulting
http://www.pearce.uk.com

[Scott Dorsey]

Don Pearce > wrote:
>On 24 Aug 2006 11:00:19 -0400, (Scott Dorsey) wrote:
>>Beauchampy > wrote:
>>>Ok, I have the following setup;
>>>
>>>Mackie HR824s, Yamaha NS-10s powered by a Crown D60, AKG LSM50s powered
>>>by a Samson Servo, and a Hi-Fi setup across the room powered by a NAD C370.
>>>
>>>I need some sort of clever way to switch between these four sets of
>>>speakers and have the volumes all at relatively the same levels!
>>
>>Get a switchbox to switch the line level signals. Play a 1KC tone. Adjust
>>the gain controls with an SPL meter at the mix position so that all three
>>have the same levels.
>
>A tone to get speakers to the same level? You'll be lucky if you get
>within 20dB even in a good room. You need broadband noise - pink is
>probably best for this job.

That helps eliminate the narrowband room problems, but when you have
speakers that have such wide low frequency variations, it causes more
problems. Maybe a third octave noise band somewhere in the midrange?
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."

[Don Pearce]

On 24 Aug 2006 11:20:29 -0400, (Scott Dorsey) wrote:

>Don Pearce > wrote:
>>On 24 Aug 2006 11:00:19 -0400, (Scott Dorsey) wrote:
>>>Beauchampy > wrote:
>>>>Ok, I have the following setup;
>>>>
>>>>Mackie HR824s, Yamaha NS-10s powered by a Crown D60, AKG LSM50s powered
>>>>by a Samson Servo, and a Hi-Fi setup across the room powered by a NAD C370.
>>>>
>>>>I need some sort of clever way to switch between these four sets of
>>>>speakers and have the volumes all at relatively the same levels!
>>>
>>>Get a switchbox to switch the line level signals. Play a 1KC tone. Adjust
>>>the gain controls with an SPL meter at the mix position so that all three
>>>have the same levels.
>>
>>A tone to get speakers to the same level? You'll be lucky if you get
>>within 20dB even in a good room. You need broadband noise - pink is
>>probably best for this job.
>
>That helps eliminate the narrowband room problems, but when you have
>speakers that have such wide low frequency variations, it causes more
>problems. Maybe a third octave noise band somewhere in the midrange?
>--scott

Yup - that would be better.

d

--
Pearce Consulting
http://www.pearce.uk.com