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7050B/8020a's or 7050/8020b's master volume set up

2530g, modified 11 Years ago.

7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
I got a great deal on a pre-owned 7050B to add to my pair of 8020a's which are still within a 30 day trial period that still could be exchanged for 8020b's. I haven't received it as of yet in order to answer my own questions so here goes:

If I'm understanding the manual for the 7050B, it offers a more appealing set up option of being able to control the gain/volume of the 7050b/8020 combination by way of the 8020a volume pots by connecting the audio output XLR into the sub but there is no longer a separate audio output available on the newer 8020b.

This might be THE deciding factor to keep the 8020a's if there isn't a "master gain/volume" set up on the 8020b's since I really don't want to control the volume from my sub only.

Can you please tell me if the overall volume can be controlled thru the mains' volume pots with a 8020b/7050b?
or
Is that option no longer available because of the newer 8020b's on/off switch replacing the audio out XLR?

Please correct me if I'm wrong but the only other option would be to go from the converter, out to the 7050b, out to the 8020's (volume cranked to the max) and control all 3 from the left and right faders on the virtual mixer on my desktop.

Thanks for your time, as usual.
ilkka-rissanen, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
Hi,

You got it right, the 8020B can't be used to control the gain/volume of the whole system as it doesn't have an output connector. Though usually this isn't a problem because the gain would be only set once and the volume would be controlled from the source.

With 8020A it works as you described.
2530g, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
The sub is arriving today and the set up reads that there are 2 male to female XLR's required.

I presently have a 5foot and a 10foot unbalanced male 1/4 inch to male xlr between the 8020a's and my Echo Layla 3G (hence the 1/4 inch males)

Can these be unbalanced if I only require the same lengths of 5 & 10 feet or should I be buying 4 new balanced cables?
ilkka-rissanen, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
For the most noise immune system, I would recommend balanced cables for the whole system.
2530g, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
I just plugged the sub in and did the initial placement, Bass Roll off engaged, & dip switch phase adjustments using the "coarse phase adjustment method" and your 85Hz sine wave that I loaded into an audio track.
I haven't engaged the sensitivity dips on the sub itself because now it's too late in the evening but I did have time to lower the mains to the -4dB Bass tilt setting. I have to say that the addition of the sub is quite overwhelming at this point of adjustment while listening to any kind of music.
I'm finding that I'm adjusting to it as well as it is being adjusted to the mains.
I have to admit It's a completely different "environment" from what I'm used to - like my whole self/soul is being surrounded - Actually sort of creepy at first.
If you remember from my previous thread... My furnished, carpeted room with vaulted ceiling is 20x20 feet and I'm in the corner (not by choice) with the sub at my side. The mains and sub are hugging the walls.
Please realize that I haven't spent more than 15 minutes adjusting/listening before I had to stop.
Do you have any suggestions as to lighten up the subs intensity besides engaging the bass tilts on the sub itself?
Thanks for your time.
p.s. I do have a test cd with 10-300Hz sound files at 10 Hz increments & a separate track of pink noise if that helps...but I don't know how to utilize it.
ilkka-rissanen, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
The best way to lower the subwoofer's intensity is to lower its input gain. There's a gain knob that you can rotate with a flat head screwdriver. When you set it towards +12 dBu (counter-clockwise), the subwoofer will sound quieter, and when you set it towards -6 dBu, the subwoofer will sound louder. Additionally you can use the bass roll-off setting (on the subwoofer) to lower the level of the very low frequencies.
2530g, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
Thanks for the info. Can you tell me what the factory setting was so I can compare what the previous owner has set it to? When I received it, it was set to -6dB. I'll try to go towards 0 dB & further if need be, then I'll try the bass roll off settings as well & let you know the results.
ilkka-rissanen, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts
The factory setting is -6 dB but usually that's too loud and therefore subwoofer's level should always be adjusted.
2530g, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
Ilkka,

Thanks for the quick reply as usual!

It's relieves me to know that the factory setting is usually too loud. At first, I thought that I had made an expensive mistake in buying this sub and sort of "overdoing" it / overkill / etc.

Can you tell me from the previous responses to your directions what the roundabout/average prosumer finds to be an adequate setting?

Can anyone viewing this thread tell us all what their sensitivity setting wound up being as well as,
-some info about your room size and
-the model number of the mains you tried to sync the 7050B sub up to?

It would be some very useful information for future owners to base their starting and ending points of adjustment.
ilkka-rissanen, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Yoda Posts: 2564 Join Date: 3/23/09 Recent Posts

Can you tell me from the previous responses to your directions what the roundabout/average prosumer finds to be an adequate setting?

It's quite difficult to give any typical settings because rooms and also people are so different. But I would say 0 to -4 dBu is quite typical (assuming that the main speaker gains are maxed out). Also experiment with bass roll-off, typically -2 dB or -4 dB is used.
2530g, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
Ilkka,

Right away, I can report that lowering the setting to -4dB sensitivity seems to work WAY better than the -6dB factory setting for my combination and placement -

Very noticeable difference in the overall kick drum perception/presence and the expected bass guitar definition.

I haven't tried the roll off dip switches as of yet but I'll let you know as time goes by.

I'd still be interested in hearing what settings other owners have arrived at.

Does anyone out there have any personal system settings data to contribute to future and present Genelec owners?

I'm sure that any useful info would be appreciated by all.
2530g, modified 11 Years ago.

Re: 7050B/8020a's or 7050/8020b's master volume set up

Youngling Posts: 14 Join Date: 5/22/10 Recent Posts
After a few days of listening and tweeking, I'm settling on the -4dB sensitivity setting (rolled back from -6 factory) on the sub without using any of the subs tilts and the 8020's are set w/ the -4dB bass roll off.