Neve style 500 series mic pre 1290 1073

[bruno2000]

Thanks!
(sorry about the 2 missing "e")
Best,
Bruno2000

 

[onlymeeee]

Do you have an estimate on how much it would cost to build a complete single unit, just checking on my budget.

£250 - £300
Depending on what knobs you choose to have... either £2 simple ones, or about £40 from Neve.
Same goes for whether you have the DC-DC converter which is around £12.
etc.

 

[kepeb]

so does the dc-dc converter just comprise of these?:

Mfr. #: AGQ26024
Manufacturer: Panasonic
Desc.: General Purpose / Industrial Relays 2 Form C High Sense Coil Voltage 24

so i can remove that from the cart if i intend to run from 24v? :-\

 

[kato]

Kepeb, that's a relay.  The converter is the TDK product.

EDIT:  wow, that mouser import tool is fucking cool.  That feature used to be so buggy.
Just in the past couple weeks I've put my EQN part list into one, the Airband compressor into a list, etc. And you can create a public link to them.  For example, if it works like I think it should: THIS LINK should take you straight to the parts.  (Somebody let me know if it doen't - or if you have to be logged in to mouser to see it.)

The DC-DC converter is not in the list so no need to remove it for 51xers.

 

[kepeb]

hmm, all i can see by TDK is
Multilayer Ceramic Capacitors (MLCC) - Leaded 1.0uF 50V X7R 10%

i was looking for something in the region of £12 as onlymeeee suggested to canidoit to omit from the build if using 51x PS
does the dc-dc section comprise solely of these caps then?

thankyou very much kato  

EDIT: updated list gratefully received ta

 

[onlymeeee]

so does the dc-dc converter just comprise of these?:

Mfr. #: AGQ26024
Manufacturer: Panasonic
Desc.: General Purpose / Industrial Relays 2 Form C High Sense Coil Voltage 24

so i can remove that from the cart if i intend to run from 24v? :-\

Those are relays.  2 relays are used for the small DC-DC converter pcb and definately won't be needed for 24V rail operation.

However, 1 is used as a mute circuit which unmutes when power supply is up and running.  Also mutes as power supply is turned off, so you keep those annoying pops and bangs to a minimum.  This could just be shorted out I guess if you didn't want it and wanted to save a bit of cash. It'll be as easy as just placing a jumper in the holes specified for the relay.

Here's a bom without the extra circuitry needed for when you use the DC-DC converter...  NV73mic pre BOM for 24V rail operation

 

[onlymeeee]

hmm, all i can see by TDK is
Multilayer Ceramic Capacitors (MLCC) - Leaded 1.0uF 50V X7R 10%

i was looking for something in the region of £12 as onlymeeee suggested to canidoit to omit from the build if using 51x PS
does the dc-dc section comprise solely of these caps then?

thankyou very much kato 

Ah the DC-DC converter is to be bought seperately, (at Digikey probably) and is not included in the BOM.

 

[kepeb]

sweet, that's great thanks

 

[onlymeeee]

Kepeb, that's a relay.  The converter is the TDK product.

EDIT:  wow, that mouser import tool is F*cking cool.  That feature used to be so buggy.
Just in the past couple weeks I've put my EQN part list into one, the Airband compressor into a list, etc. And you can create a public link to them.  For example, if it works like I think it should: THIS LINK should take you straight to the parts.  (Somebody let me know if it doen't - or if you have to be logged in to mouser to see it.)

Genius! Don't even have to be logged in.  I knew they'd be a way to do that with just a link but for the life of me couldn't find it!  Got confused by all the email colleague stuff when you click share project... Got it now though, there's a URL link at the bottom I didn't see!

 

[funkymonksf]

Hey david,

I was curious about the first pre you did with the Carbon Comps... I noticed this bom uses metal film through out. Any reason for going to metal film? And what carbon comps did you use in the first picture? I was also curious if you had a regular bom with destination numbers and part value for those who would rather go through another vendor? Regardless the last set off pictures got me real excited.

One more thing. What size or part number should we refer to when we order the grey knob from neve?

Thanks,
Brice

 

[onlymeeee]

Hey david,

I was curious about the first pre you did with the Carbon Comps... I noticed this bom uses metal film through out. Any reason for going to metal film? And what carbon comps did you use in the first picture? I was also curious if you had a regular bom with destination numbers and part value for those who would rather go through another vendor? Regardless the last set off pictures got me real excited.

One more thing. What size or part number should we refer to when we order the grey knob from neve?

Thanks,
Brice

Purely, because I've only come across one pair of early 1073s that had carbon comps on the BA183.  All others I've seen have metal films.  (or the red  ones..carbon film?)
I didn't actually compare side by side because I canabalised it for parts.  But hope to in the future.
Got the carbon comps from Mouser too.

Working on the regular BOM at the moment.. nearly there, just checking a few of the part designations.
The grey knob is MK 20008 /4. Red is MK 20004 /6
Oh, which reminds me... because the shafts are imperial and the knobs metric.. I use a little file on the shaft of the switch... works a treat
(of the 4 red knobs I've bought, 2 fitted without filing)

 

[kepeb]

whilst we're on BOM, does anyone know if theres price breaks when you reach a specific amount with those neve knobs?
seems silly us all ordering one or maybe two each if theres a better way.

alternatively any suggestions for knob'a'likes? i've trawled this place and the internet looking for copies and with the exception of large batch clone manufacture talks, its seems like they're on their own.

 

[onlymeeee]

No price breaks unfortunately.

No exact lookalikes out there, but there's this style  http://parts.digikey.com/1/parts/746121-knob-instrum-dbl-bar-rnd-7-dia-8565.html

 

[Neil]

Also the only other thing to buy is the DC-DC converter for those running off +-16V (not needed if you're using +-24V rails)
This can be bought from digikey     445-2492-ND

I just wanted to double-check this part #, because the data box says the input is 24 VDC and the output is +-12 to +-15 VDC. Isn't that backwards?

 

[kato]

Re: knob-a-likes - did you see the Marconi clone thread? It looks like it's still going to happen.

The double bar knob from Digikey is good enough for me but I can't bring myself to pay $7.68 for a F*cking plastic knob. There are plenty of acceptable plastic knobs for <$2.


A search for double bar knob brings up a knob at half the price, probably the same one: http://www.alliedelec.com/search/productdetail.aspx?SKU=9047117

 

[kepeb]

yea until i get originals or very close replicas for under £5 i think those gay little chicken head ones will be alright.

http://cgi.ebay.co.uk/12pcs-AMPLIFIER-BASS-RED-CHICKEN-HEAD-KNOBS-KNOB-RK-/120623902708?pt=LH_DefaultDomain_0&hash=item1c15beaff4#ht_1464wt_754

they have grub screws with brass centers, the red colour is pretty close and they have the white line pointer too.
plus they're cheap and everywhere!


how critical are the specifications on the bc184s?
i see mouser has some similar but not exact, the lead time is 26 weeks tho! might not sound a lot but thats six and a half months!!!

 

[kilmister]

[quote author=kepeb]
i see mouser has some similar but not exact, the lead time is 26 weeks tho! might not sound a lot but thats six and a half months!!!
[/quote]

I just bought these for eqn from Farnell http://uk.farnell.com/fairchild-semiconductor/bc184c/transistor-npn-to-92/dp/1017657

-Paavo

 

[jsteiger]

...I just wanted to double-check this part #, because the data box says the input is 24 VDC and the output is +-12 to +-15 VDC. Isn't that backwards?

I originally wondered the same thing as they are used for PP's EQN build. Check out the datasheet and you will see it is the correct part.

Cheers, Jeff

 

[kepeb]

re: bc184c
cheers Paavo
yea, mouser have close ones like that but the continuous current and dissipation specs are different for all the modern equivalents.

just wondering what difference this will make, i'm not as transistor literate as some of you, i've not even seen the schematic yet
i'll probably track down originals anyway if it makes any audible difference, but use bc184'lc' for the initial builds so i can get them in one delivery order. presuming these differences wont be a problem.
the transistors will be in sockets anyway.

 

[Neil]

I originally wondered the same thing as they are used for PP's EQN build. Check out the datasheet and you will see it is the correct part.

Cheers, Jeff

Ah, I see now. It's a dual unit so the outputs are connected to make 24v. Thanks! One other question, though, the datasheet also says the input should be 18-36v, so how's it work with 16v lunchboxes? Is it just overspec'd?