Anyone know the Yamaha M916?

[Milkmansound]

Just looking at the schematic for this it looks promising:

Its not discrete like the PM1K - inputs go to a TA7322 I think

Input transformers, and output trannies on the master and bus outs. Like the PM1k - its hard to read on the schematic- but I think it says GA81700 for the inputs, GA81720 on the outputs

AN6652 - another chip for EQ

any one have any thoughts on this? Worth gutting and racking?

 

[lang_dave]

Hi - I'm using one of these boards as a learning project.

The main op amp in it is the Toshiba TA7322P. They are a 9 pin SIP. I tracked down a datasheet for them and was hoping to con someone into helping me decide if it was possible to upgrade them with something better.

That Panasonic AN6552 chip in the EQ section has a very slow slew rate, (1V/uS) but I read that it doesn't really matter in EQ circuits. I don't know enough about the subject to judge whether that's true or not or whether there's a good upgrade for that chip.

I have the technical manual with schematics, parts list, and datasheets for the two op amps here:

www.davelang.com/m916

The unit that I have is a little bass light so I thought I'd recap it. It's also a little noisy, which is why I was hoping to upgrade the op amps.

Did you buy one or were you considering it?

take care,
dave

 

[Milkmansound]

I was considering it but now I think that I need to hold off since I really have nowhere to put it. I am in the middle of moving onto a small island for the summer, and the last thing that island needs is a big ugly yamaha mixer in 2000 pieces all over the place.

I have been to your site as well. If I racked these up, I would prabably try and bypass the entire eq section if possible. I was mainly wondering if the transformers and opamps were any damn good, and if the thing has potential. Does it?

 

[lang_dave]

>If I racked these up, I would prabably try and bypass the entire eq section if possible. I was mainly wondering if the transformers and >opamps were any damn good, and if the thing has potential. Does it?

Hard for me to say. I used it for one session doing vocals and I liked it. I used it for a mix down and didn't like it.

The vocal tracking was good, even with the EQ. In fact, I thought the EQ sounded relatively smooth and actually better than the waves / digi / bombfactory EQs.

Mixdown was bad 'cause it's too light on the bass. Bad bad bad. I much preferred my Speck Xtramix, but the Xtramix cost ten times as much so....

Once I recap it I think I'll have a better idea.

If I were to rack it I don't think I'd bother bypassing the EQ - didn't seem that bad to me.

Another interesting part is that the TA7322P is pretty rare. Whether it's good or bad, it's unique.

:grin: :grin: :grin:

Each channel has a direct out (sort of) so I'm not sure I'd bother racking it - lots of work for not much payback - maybe just use the channels in the existing cabinet?

You can get M1516 / M1524 whatever strips from ebay for not much $$ - they'd be better racking candidates 'cause they use a pin compatible Yamaha discrete amp that could be replaced with your various 990 clones.

The input transformers on the M916 are smaller than the ones on the M15xx etc. and the PM1000. I haven't heard the others so I can't say whether they sound worse or not.

The M916 is certainly cheaper.

Anyway, I'll put up a big post asking for help in a while - we'll see what everyone else says.

take care,

dave

 

[Milkmansound]

thats what I was wondering about - the size of the transformers - must be the cheaper ones like in the PM700 or something similar.

Well, I think I am gonna pass on this board then since there is no real need for a console, and other projects are piling up! Thanks for the info.

 

[johnny free]

Hi - I'm using one of these boards as a learning project.

The main op amp in it is the Toshiba TA7322P. They are a 9 pin SIP. I tracked down a datasheet for them and was hoping to con someone into helping me decide if it was possible to upgrade them with something better.

That Panasonic AN6552 chip in the EQ section has a very slow slew rate, (1V/uS) but I read that it doesn't really matter in EQ circuits. I don't know enough about the subject to judge whether that's true or not or whether there's a good upgrade for that chip.

I have the technical manual with schematics, parts list, and datasheets for the two op amps here:

www.davelang.com/m916

The unit that I have is a little bass light so I thought I'd recap it. It's also a little noisy, which is why I was hoping to upgrade the op amps.

Did you buy one or were you considering it?

take care,
dave

I just got myself an m916, do you still have the schematics ect?

 

[Sorr]

The community Radio Station I was involved with in the 1980's had one. I used it to record live bands. The Fall and Iggy Pop to name a couple.
I always liked its Eq.