panasonic mn3005 vs mn3011

[teknoman2]

Does anyone know if can we use mn3011 instead of mn3005 or mn3008 for an analog delay?
I just compare their datasheets
mn3005 (4096 stage) has 205ms delay time
mn3008 (2048 stage) has 102.5ms delay time
mn3011 (3328 stage) has 166.4 ms delay time

since mn3011 has longer time than mn3008 why can't we use this one instead of mn3008 ?

[midwayfair]

Re-check the pin count ... you'd need to create a project specifically to use this chip.

[Govmnt_Lacky]

I guess a better question would be....

Where in the heck did you find some MN3011s at? 

Either way... it looks like the 3011 is a 6-tap output and, although totally possible, like Jon said... you would need to redesign a circuit or create a whole new one for the 3011 chip 

[teknoman2]

I am not asking of using mn3011 instead mn3005/08 in an existing project,

I just saw this schematic and I was wondering if worth the try to make a project like this since the delay time is longer than mn3008.

[Govmnt_Lacky]

I dont see any reason why a project couldn't be created BUT...

Depending on the cost of the 3011, it might be the same price or cheaper to go with the 3005. Then, you already have saved money, have access to proven projects that use the 3005, and you get LONGER delay times 

[Scruffie]

It'd be an insane waste of an MN3011 to just make a standard delay pedal, it was designed with the creation of reverbs in mind (short lived production though as digital soon won out) hence the option to tap out shorter stage delays to simulate the reflections of real reverb.

It was used in the A/DA STD-1 rack unit though effectively by using the extra taps effectively as a multi-effect chip, providing chorus, flanger, double tracking.

Making a new project for it though would probably be a slight waste of time though as they're a very rare chip so not many people are going to have access to them. It could be used for some kind of multi-tap delay project perhaps but that's a specific sound.

I would not waste it on what I think you are suggesting and suggest you go with doubled up MN3008 or an MN3005 instead. If you have access to one i'd happily trade you some more standard BBDs for it.

[teknoman2]

I just wondering if it's worth the try since the price on some ebay sellers is the same with the mn3008. I don't know if they are legit but worth the try research for a project like this

[Scruffie]

I just wondering if it's worth the try since the price on some ebay sellers is the same with the mn3008. I don't know if they are legit but worth the try research for a project like this

Lowest price with P&P I see for them is $14, lowest price for MN3008 $4.20, or known legit from cromesphere's store for $11.

No, it's not worth the effort, there are plenty of projects for the MN3008, the time designing a pedal and a layout to use the MN3011 specifically would far outweigh any savings gathered from the (assuming we get the maximum of 150mS of a 3008 and add for sake of argument 1024 stages (it's a small amount more than that, not worth splitting hairs though) or basically an MN3007, which absolute stretched to the limit gives 75mS... so 225mS maximum, probably more like 200mS) extra 75mS of delay time compared to just running two MN3008 in series for 300mS.

The MN3008 is far more available than the MN3011 too, which should be better saved for the repairs of the effects that use it specifically.

[teknoman2]

300 ms with two mn3008 instead of 450ms with two mn3011 assuming they are legit with the same price. I believe everyone will prefer the mn3011. It's like adding another one and having three mn3008. My opinion is worth the try if we find a reliable source for mn3011 at the same price as a reliable mn3008

[DutchMF]

The important bit is the last line:

The MN3008 is far more available than the MN3011 too, which should be better saved for the repairs of the effects that use it specifically.

I'm all in with Scruffie as to save rare chips to repair vintage units that used them originally. Imagine the pile of discarded equipment our current supply of MN3005's is coming from!
Paul

[teknoman2]

I am just saying from my point of view that I believe using two bbd chips mn3011 is the best way to achieve the maximum delay 450 ms without ripped off from fake mn3005. What do you prefer, the possibility of spending 60-80$ for two mn3005 instead of 20-30$ for two mn3011?

[Scruffie]

300 ms with two mn3008 instead of 450ms with two mn3011 assuming they are legit with the same price. I believe everyone will prefer the mn3011. It's like adding another one and having three mn3008. My opinion is worth the try if we find a reliable source for mn3011 at the same price as a reliable mn3008

The MN3011 are far scarcer, the price will either be higher to start for legitimate pieces or, as happened with the 3005, increase sharply in price due to supply and demand.

The 3011 was one of the last produced in the panasonic BBD line, there will not be the supply there is of the MN3008 or even the 3005.

Also, I can go to several online retailers and buy a legitimate 3008, none stock the 3011, smallbear did at one point but stopped as decent supply dried up.

[Scruffie]

I understand the frustration with the 3005 but don't cause the same issues for people who need to get 3011s for repairs for 150mS, probably more like 75-100mS usable at the end of the day as those numbers are the MAX.

And the frustrations that the 3005 cause will only end up applying to the 3011 in the end if not to start, so why bother?