11 replies to this topic

[eclipse_DYN]

Last night I installed my new head unit, a DVA-9861e, and wired up my new processor, H701. Straight out of the box (so to speak) the SQ is excellent. Very clean and powerful sound. Im not sure why, but I seem to have much more volume now..... Something to do with optical output maybe?

Today I concentrated on setting gains, and time alignment. I am pretty happy with what I have achieved, but I'm unsure on some of the other features the 701 has.

Im after a bit of advice from someone who has used a 701 and knows the ins and outs of the different settings features. I have tried enabling and disabling different things in different combinations, but I'm having trouble finding a winning combination that makes the most of what I have.

I know that every setup is different and will require different setups, but I'm just after a starting point. Features I'm unsure of are:

MX - On or Off. If on level 1,2 or 3?
Bi-Phantom - On or Off?
Multi Channel - Movie, Music, Rear mix or off?
PCM - 2ch or 3ch
Listening Mode - Standard or Maximum

Any advice is, as always, very much appreciated.

[Mr_Bob]

Definately tune with MX off, (it' sorta like a "loud" feture, but more advanced)

If your base tune is for SQ, you can use it to give you a fatter sound for everyday cruising.
found it was ok when i was listening to Rap or DnB
multichannel is about surround settings, i had it off, but if you're playing movies, you may want it on.

Bi-Phantom is designed to replicate a centre channel even if you don't have one.
I tried it and noticed an imaging change, but i didn't think it was better.

I haven't tried the other settings,
PCM is usually the sample rate, so i'm not sure why it relates to channels
Unless it's a form of calculation to generate a centre channel signal even if the source doesn't have one recorded?

[Pulse-R]

In short:

MX off (has to be set for all sources, except AM has no MX.

Are you using surround, or only 3-way front+sub?
Bi-Phantom is to do with centre channel/surround info.
PCM 3-ch is only if you g=have a centre speaker.
Standard.

If you hook up a screen, there's a few other options also, to do with DVD sound. - 2-ch mixdown, or surround... etc.

[eclipse_DYN]

Pulse-R, on Feb 19 2010, 08:21 PM, said:

In short:

MX off (has to be set for all sources, except AM has no MX.

Are you using surround, or only 3-way front+sub?
Bi-Phantom is to do with centre channel/surround info.
PCM 3-ch is only if you g=have a centre speaker.
Standard.

If you hook up a screen, there's a few other options also, to do with DVD sound. - 2-ch mixdown, or surround... etc.

Im not using surround, only 3way front + sub. I am still running semi active front stage, have the midrange and tweet running off the passive crossover still. I have Front 1 going to the amp driving midrange and tweet, Front 2 going to midbass amp, and Sub to Sub. Im thinking maybe I should have run the midbass amp off Rear, that way I have more EQ channels available, and can tune bands that are really close together

So without the centre speaker I should have Bi-Phantom off, PCM set to 2ch, and listening level to Standard. Easy

I have noticed an immediate increase in stage height and depth, as well as a much more focused centre image. And for some reason more volume??

Great setup the 9861 + 701, heaps of tuning options, will take me ages to get it right. Hopefully it should be sounding pretty good by the next comp (March 6)

Edited by eclipse_DYN, 20 February 2010 - 06:08 PM.

[Mr_Bob]

more volume is likely to be due to the higher voltage pre-outs.
may also be perceived volume if your dynamics have improved.

I ran my setup very simliar to yours, semi active 3 way, midbass off rears, mid and tweet off front 2.
I used Front 1 for ambient tweeters.

[vsber]

Mr_Bob, on Feb 20 2010, 09:35 PM, said:

more volume is likely to be due to the higher voltage pre-outs.
may also be perceived volume if your dynamics have improved.

I ran my setup very simliar to yours, semi active 3 way, midbass off rears, mid and tweet off front 2.
I used Front 1 for ambient tweeters.

Glad to hear you have it up and running .

[HISPL]

Remember to always cut and never boost using an EQ

[bsyde]

HISPL, on Feb 21 2010, 02:00 PM, said:

Remember to always cut and never boost using an EQ

That is not always the case. The idea is not to boost into clipping. So try and cut more than boost is a good idea but to never boost is not entirely correct

[s4turn]

this thread here may be of help
http://www.diymobileaudio.com/forum/diy-mo...rets-701-a.html

in the thread above, if you run tweeters on front 1. midbass off front 2, midrange of rear 1 then you will get a separate EQ for the Mids and tweeters, which I plan on doing

Edited by s4turn, 22 February 2010 - 02:51 PM.

[Pulse-R]

^^^ That's how I have mine.

make sure you set all the sources to 2-channel mix-down, or you have some funny effects with 5.1 cd's.

I had to connect up the screen to get some of the options, but then disconnected it again once the H/U setup was done.

[HISPL]

bsyde, on Feb 21 2010, 05:35 AM, said:

That is not always the case. The idea is not to boost into clipping. So try and cut more than boost is a good idea but to never boost is not entirely correct

Not alwyas the case but good advice for someone who is a noob.

I don't think you should buy speakers or install a system where the FR is that bad that after cutting using your EQ you then need to boost to complete "fixing" the problem

[Mr_Bob]

personally i wouldn't boost unless it was a last resort.

I found a gap in my frequency response, and considered boosting those frequencies
i kept chasing the issue to find that my mids and midbasses preferred to be out of phase relative to each other.
possibly due to phase shift in the crossovers.
once the phase was swapped, the FR was much smoother.

also had another issue where i needed to run overlap in the electronic crossovers to get rid of a gap.

in both cases, boosting the frequencies would not have solved the issue
but would have increased the risk of damage to speakers,
inparticular in the first case, as the speakers were receiving full power, but were not audible in that range.

tuning your system to be +/-3db is not easy, and if you do this only via the EQ, you will strangle the dynamics.

The best way to tune is via installation.
this is about good system planning and then some trial and error

EQ should only be applied once this has been exhausted, and then sparingly.
I would much much much rather an ordinary frequency response and good dynamics,
than a perfect frequency response and ordinary dynamics