AudioCircle

Industry Circles => GR Research => Topic started by: Danny Richie on 9 Oct 2019, 03:49 pm

Title: New Copper Caps and introductory pricing
Post by: Danny Richie on 9 Oct 2019, 03:49 pm
The new Copper Caps are a pure Copper foil and wax paper film design. These are 100 volt rated caps.

(http://gr-research.com/pics/copper%20caps.jpg)

I will be offering introductory discount prices of 25% off when two or more caps are ordered.

Here are the sizes, retail prices, and introductory discount price.

5.0uF retail $275 each.
6.0uF retail $315 each.
6.8uF retail $320 each.
8.0uF retail $325 each.
9.0uF retail $345 each.
10uF retail $350 each.
12uF retail $360 each.
15uF retail $475 each.
20uF retail $576 each.

Call to order: 940-592-3400

Here are the Dimensions of the caps in inches:
 
             Length    X    Diameter
5uF=       2.5”       X      1.625”
6uF=       2.5”       X      2.0”
6.8uF=    2.5”       X      2.0”
8uF=       2.5”       X      2.0”
9uF=       2.5”       X      2.25”
10uF=    4.95”      X      1.75”
12uF=    4.95”      X      1.82”
15uF=    4.95”      X      2.0”
20uF=    4.95”      X      2.5”
 
The leads AWG are 18AWG for the 5uF through the 9uF.

Leads on the 10uF through the 20uF are 16AWG.

All use solid Copper wire with 99.99% purity and Tinned leads.
Title: Re: New Copper Caps and introductory pricing
Post by: Caper on 2 Dec 2019, 06:47 pm
Hi How would such a large heavy cap do as a cap for a 1st order single cap tweeter filter? Is bypassing say 4uf large cap like this be beneficial ? If so what value , does super fast 0.01uf makes any sense as a bypass?
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 2 Dec 2019, 06:57 pm
Hi How would such a large heavy cap do as a cap for a 1st order single cap tweeter filter? Is bypassing say 4uf large cap like this be beneficial ? If so what value , does super fast 0.01uf makes any sense as a bypass?

What order crossover they are used in is not a factor. And there still may be some benefit from a small by-pass cap.
Title: Re: New Copper Caps and introductory pricing
Post by: Caper on 2 Dec 2019, 09:25 pm
Thank you Danny.
I do use 3.9uf Mundorf Supreme + 0.33uf German Copper foil +0.01uf Mundorf Silver Oil all in parallel , as only part of a crossover for the tweeter .
Speakers did disapear and highs are super clean and airy but bit too recessed for my ultimate satisfaction.
Do you think having 3 caps in parallel is ok or should I try single cap like this Copper or maybe 4uf Miflex copper KPCU ???  Speaker is B&W 686s2.
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 2 Dec 2019, 11:23 pm
Thank you Danny.
I do use 3.9uf Mundorf Supreme + 0.33uf German Copper foil +0.01uf Mundorf Silver Oil all in parallel , as only part of a crossover for the tweeter .
Speakers did disapear and highs are super clean and airy but bit too recessed for my ultimate satisfaction.
Do you think having 3 caps in parallel is ok or should I try single cap like this Copper or maybe 4uf Miflex copper KPCU ???  Speaker is B&W 686s2.

I have found the Silver and oil caps to have a bit of a sharp edge and at the same time they tend to truncate or damp out the very top octave. But maybe as a by-pass cap those attributes are less prominent.

When by-passing I like to limit the size to a .1uF or smaller.

The Copper caps would definitely take the sharpness out of that tweeter and smooth it out a little. 
Title: Re: New Copper Caps and introductory pricing
Post by: Caper on 3 Dec 2019, 04:02 am
Thank you for your observation, I guess it can be a bit of trial and error test to get the balance right .
I almost wish I could have more forwardness to the soundstage now as it sounds rather recessed and drawn more to the back what makes it sound almost too calm and less in front detail that i like on most recordings.
Before I do anything I will wait for my power amp to be updated by John at Musical Concepts , his power amp modules with Mosfets and dual mono latest drive stage modulss should be pretty magical and with Jensen 4 pole power caps should guarantee super low noise and very dynamic and detailed presentation so afteAFr hearing it I will give my speakers final cap tune up 😉
Title: Re: New Copper Caps and introductory pricing
Post by: Folsom on 3 Dec 2019, 05:27 am
Interesting they start at 5uf, and not below! It's often hard to get larger caps that are the "good stuff". Nice to see a very new product to GR!
Title: Re: New Copper Caps and introductory pricing
Post by: Caper on 4 Dec 2019, 04:44 am
If you need 4uf you can always use 2 x 2uf for even lower esr. If im not mistaken.
How do these huge and heavy copper caps sound in the tweeter filter in comparison to Sonicap you like to use...?
 I know it is 10x the price so we got to be fair .


Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 4 Dec 2019, 04:10 pm
If you need 4uf you can always use 2 x 2uf for even lower esr. If im not mistaken.
How do these huge and heavy copper caps sound in the tweeter filter in comparison to Sonicap you like to use...?
 I know it is 10x the price so we got to be fair .

These Copper caps are on another performance level, and of coarse at another price level.
Title: Re: New Copper Caps and introductory pricing
Post by: Caper on 4 Dec 2019, 04:29 pm
Of course 500usd per set of 2 pcs is a lot of money amd maybe overkill for some systems...  it would be great to try it with some great tweeter 😉
Did you experimented with small bypass say 0.1uf on top of Sonicaps you offer?
Also are these new copper caps kind of like Miflex KCPU Copper ?
4uf Miflex weights over 2lbs each and its size is huge so it may change volume of the box of say mini monitor , so i thought to try it outside of the box on a little shelf mount behind the speaker....  if that would yield significant performance gain?   I did not hear of anyone trying it yet?
Title: Re: New Copper Caps and introductory pricing
Post by: CaptainBill on 12 Apr 2020, 05:05 pm
Hi,

Very cool product!  Do these have a finite lifespan or environmental requirements like humidity thresholds?

Thanks,
Billy
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 13 Apr 2020, 04:26 pm
Hi,

Very cool product!  Do these have a finite lifespan or environmental requirements like humidity thresholds?

Thanks,
Billy

I know of no special concerns.
Title: Re: New Copper Caps and introductory pricing
Post by: SSpringer on 1 Jun 2020, 12:40 pm
The new Copper Caps are a pure Copper foil and wax paper film design. These are 100 volt rated caps.

(http://gr-research.com/pics/copper%20caps.jpg)

I will be offering introductory discount prices of 25% off when two or more caps are ordered.

Here are the sizes, retail prices, and introductory discount price.

5.0uF retail $275 each, and discounted $206.25
6.0uF retail $315 each, and discounted $236.25
6.8uF retail $320 each, and discounted $240.00
8.0uF retail $325 each, and discounted $243.75
9.0uF retail $345 each, and discounted $258.75
10uF retail $350 each, and discounted $262.50
12uF retail $360 each, and discounted $270.00
15uF retail $475 each, and discounted $356.25
20uF retail $576 each, and discounted $432.00

Call to order: 940-592-3400

Here are the Dimensions of the caps in inches:
 
             Length    X    Diameter
5uF=       2.5”       X      1.625”
6uF=       2.5”       X      2.0”
6.8uF=    2.5”       X      2.0”
8uF=       2.5”       X      2.0”
9uF=       2.5”       X      2.25”
10uF=    4.95”      X      1.75”
12uF=    4.95”      X      1.82”
15uF=    4.95”      X      2.0”
20uF=    4.95”      X      2.5”
 
The leads AWG are 18AWG for the 5uF through the 9uF.

Leads on the 10uF through the 20uF are 16AWG.

All use solid Copper wire with 99.99% purity and Tinned leads.
Do they come in any other sizes?
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 1 Jun 2020, 12:48 pm
Do they come in any other sizes?

Not at the moment.
Title: Re: New Copper Caps and introductory pricing
Post by: rollo on 1 Jun 2020, 07:08 pm
  Good luck Danny.

charles
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 23 Jun 2020, 03:43 am
The company owner would really like to get these caps out there in use so that feedback can be generated.

So they are going to run a special on these USA made caps and will be discounting them 50% from now until the 4th of July.

So you better jump on this deal while you can.
Title: Re: New Copper Caps and introductory pricing
Post by: mresseguie on 23 Jun 2020, 03:27 pm
Danny,

In which kinds of equipment are the above capacitor values likely to be used? [I’m trying to determine which of my components might benefit from trying these.]

I’ll take a look at my Adelphos XOs.

Michael
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 23 Jun 2020, 04:00 pm
Danny,

In which kinds of equipment are the above capacitor values likely to be used? [I’m trying to determine which of my components might benefit from trying these.]

I’ll take a look at my Adelphos XOs.

Michael

These are made in values normally used in speakers.

So any of your top level speakers are prime candidates for these caps and now is the time.
Title: Re: New Copper Caps and introductory pricing
Post by: mresseguie on 23 Jun 2020, 04:04 pm
Thank you, Danny.

I’ll check the Adelphos and another pair of speakers to see what is lurking inside.
Title: Re: New Copper Caps and introductory pricing
Post by: Endo2112 on 23 Jun 2020, 04:12 pm
Hello Michael, hope all is well;

I can say that when we added these to Jay's Super 7's the up-tick in performance was profound!!

Cheers,

Don
Title: Re: New Copper Caps and introductory pricing
Post by: morganc on 23 Jun 2020, 07:16 pm
Anyone know what cap value would be needed for my Spatial X-5's? 
Title: Re: New Copper Caps and introductory pricing
Post by: mresseguie on 23 Jun 2020, 07:21 pm
Anyone know what cap value would be needed for my Spatial X-5's?

Isn't the crossover visible in back?

Title: Re: New Copper Caps and introductory pricing
Post by: morganc on 23 Jun 2020, 07:50 pm
No not on mine!
Title: Re: New Copper Caps and introductory pricing
Post by: Captainhemo on 24 Jun 2020, 06:30 pm
Call Clayton   

jay
Title: Re: New Copper Caps and introductory pricing
Post by: TexE4D on 25 Jun 2020, 01:14 am
Danny,

You directed me to this forum page from comments on the YouTube Sonus Faber Venere upgrade video. My initial question on the video was, do you ever use higher-end components in your XO designs and rebuilds.

I sent the follow inquire to Mundorf's information email, but have yet to receive a reply.

I want to upgrade the Mundorf components on my speaker crossovers.

I have a set of PAP Quintet15 Horn1 open baffle speakers with a two-way first order parallel crossover. The inductor for the low pass filter is the FERON ICore BS140-10 10 mH, 0.35 Ohm, and the capacitor for the high pass filter is the MCap250-33 33 microfarad.

Are the following items suitable upgrades for performance gains, and which out of the listed coils below would be the better choice?

Upgrade to:

Inductor MCoil AirCore CFC10-10 10 mH 0.50 Ohm,  or, VLCU-12-10 10 mH 0.71 Ohm,  or,  VL300-10 10 mH 0.38 Ohm

Capacitor MCap SUPREME EVO SilverGold.Oil SESGO-33T2.600 33 microfarad



(https://www.audiocircle.com/image.php?id=210841)


Are these the only values available? Is there a model for 33 microfarads?
Sonic wise, how do the Copper Caps compare to Mundorf's TOL cap?
Have you used these capacitors in any of your XO designs?

Thanks,
Eric Harrelson
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 25 Jun 2020, 01:42 am
Danny,

You directed me to this forum page from comments on the YouTube Sonus Faber Venere upgrade video. My initial question on the video was, do you ever use higher-end components in your XO designs and rebuilds.

I sent the follow inquire to Mundorf's information email, but have yet to receive a reply.

I want to upgrade the Mundorf components on my speaker crossovers.

I have a set of PAP Quintet15 Horn1 open baffle speakers with a two-way first order parallel crossover. The inductor for the low pass filter is the FERON ICore BS140-10 10 mH, 0.35 Ohm, and the capacitor for the high pass filter is the MCap250-33 33 microfarad.

Are the following items suitable upgrades for performance gains, and which out of the listed coils below would be the better choice?

Upgrade to:

Inductor MCoil AirCore CFC10-10 10 mH 0.50 Ohm,  or, VLCU-12-10 10 mH 0.71 Ohm,  or,  VL300-10 10 mH 0.38 Ohm

Capacitor MCap SUPREME EVO SilverGold.Oil SESGO-33T2.600 33 microfarad



(https://www.audiocircle.com/image.php?id=210841)


Are these the only values available? Is there a model for 33 microfarads?
Sonic wise, how do the Copper Caps compare to Mundorf's TOL cap?
Have you used these capacitors in any of your XO designs?

Thanks,
Eric Harrelson

I am somewhat familiar with that design and some of the PAP designs in general. It is highly likely that they need a lot more help than just a parts upgrade. Chances of that single cap working with that driver are very slim.

They need some structural stability help as well.

I would highly recommend some on axis measurements using a gated time window (no room reflections) to see what is going on there.

And yes I have heard those caps in some A/B comparisons with other caps.
Title: Re: New Copper Caps and introductory pricing
Post by: TexE4D on 25 Jun 2020, 08:29 am
Would I have to parallel a combination of these Copper Caps to achieve 33 microfarads?
Is the 50% off list correct?

Aside from learning how to do it, what do I need to perform the gated time window measurement, and what would that reveal?
Title: Re: New Copper Caps and introductory pricing
Post by: maty on 25 Jun 2020, 09:15 am
Better image now, after to add [&size=huge]

https://www.audiocircle.com/image.php?id=210841&size=huge

(https://www.audiocircle.com/image.php?id=210841&size=huge) (https://www.audiocircle.com/image.php?id=210841&size=huge)
Title: Re: New Copper Caps and introductory pricing
Post by: david45 on 25 Jun 2020, 04:52 pm
The company owner would really like to get these caps out there in use so that feedback can be generated.

So they are going to run a special on these USA made caps and will be discounting them 50% from now until the 4th of July.

So you better jump on this deal while you can.


Perfect timing, Danny! This is excellent news! I can’t wait to hear those for myself :thumb:
Thanks again for taking good care of me and have a great weekend.

(https://www.audiocircle.com/image.php?id=210865)



Title: Re: New Copper Caps and introductory pricing
Post by: Hobbsmeerkat on 25 Jun 2020, 06:21 pm
Man... If i had the funds, I'd love to jump on this deal for the NX studios along with some foil inductors..
Just for the heck of it, cuz that's a frigging steal!
Title: Re: New Copper Caps and introductory pricing
Post by: SoCalWJS on 25 Jun 2020, 07:26 pm
Hello Michael, hope all is well;

I can say that when we added these to Jay's Super 7's the up-tick in performance was profound!!

Cheers,

Don
How many and of what value are needed for each Super 7?

(I know I asked this elsewhere, but I can’t remember where  :oops:)
Title: Re: New Copper Caps and introductory pricing
Post by: mresseguie on 25 Jun 2020, 08:52 pm
Danny,

Email with Adelphos XO values sent just now.

Thanks!

Michael
Title: Re: New Copper Caps and introductory pricing
Post by: soundofrockets on 25 Jun 2020, 09:12 pm
How many and of what value are needed for each Super 7?

(I know I asked this elsewhere, but I can’t remember where  :oops:)

Would love to know this as well - what options and advantages.
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 25 Jun 2020, 09:46 pm
Would I have to parallel a combination of these Copper Caps to achieve 33 microfarads?
Is the 50% off list correct?

Aside from learning how to do it, what do I need to perform the gated time window measurement, and what would that reveal?

It is likely to reveal that the horn does not have a smooth response and that there are issues within the pass band that need correction with additional parts correcting for a rising response, response peaks, some ringing, and stored energy. They also may or may not be in phase with the woofers, and the upper end of the woofer range may be completely out of phase with the horn.
Title: Re: New Copper Caps and introductory pricing
Post by: TexE4D on 26 Jun 2020, 01:00 am
Danny,

Thanks for the explanation.
Title: Re: New Copper Caps and introductory pricing
Post by: mlundy57 on 27 Jun 2020, 10:31 pm
I’ve taken the plunge and ordered the parts to build new crossovers for my NX-Otica MTM monitors. These are going to be all out. All caps except the one in the notch filter will be copper caps, Miflex KPCU by-pass caps, Mills resistors, foil inductors, and a Sonicap in the notch filter.

Mike
Title: Re: New Copper Caps and introductory pricing
Post by: Hobbsmeerkat on 27 Jun 2020, 11:29 pm
I’ve taken the plunge and ordered the parts to build new crossovers for my NX-Otica MTM monitors. These are going to be all out. All caps except the one in the notch filter will be copper caps, Miflex KPCU by-pass caps, Mills resistors, foil inductors, and a Sonicap in the notch filter.

Mike
Well, i hope i get the opportunity to hear those, but im excited to hear your feedback in the meantime!
Title: Re: New Copper Caps and introductory pricing
Post by: Early B. on 28 Jun 2020, 12:49 am
I’ve taken the plunge and ordered the parts to build new crossovers for my NX-Otica MTM monitors. These are going to be all out. All caps except the one in the notch filter will be copper caps, Miflex KPCU by-pass caps, Mills resistors, foil inductors, and a Sonicap in the notch filter.

Awesome, but get rid of that Sonicap, too! Hey -- you said you're going all out, so go all out. Change the hookup wire to solid silver while you're in there. Take plenty of pics, please. 

Title: Re: New Copper Caps and introductory pricing
Post by: Sonicjoy on 28 Jun 2020, 02:11 pm
Great news Mike! I'm very interested to hear your thoughts on the before and after. How is the new PS Audio gear treating you? Must be good if you are wanting to elevate the speakers performance though I figured you would sooner or later.
Title: Re: New Copper Caps and introductory pricing
Post by: mlundy57 on 28 Jun 2020, 02:48 pm
Great news Mike! I'm very interested to hear your thoughts on the before and after. How is the new PS Audio gear treating you? Must be good if you are wanting to elevate the speakers performance though I figured you would sooner or later.

The new PS Audio gear is great. The old PS Audio gear was very good but moving up the line has made a profound difference. I'm also going from the BG Neo3 PDR to the GR Neo3 tweeters.
Title: Re: New Copper Caps and introductory pricing
Post by: Sonicjoy on 28 Jun 2020, 04:27 pm
Very cool! I would think that should make a noticeable improvement.  Keep us posted.
Title: Re: New Copper Caps and introductory pricing
Post by: TexE4D on 9 Jul 2020, 10:12 pm
Received my Copper Caps today from GR Research, 12uF, 12uF, 9uF to replace my Mundorf MCap Classic aluminized PP film 33uF.
Build quality is solid and the weight is hefty, especially compared to the MCap.
Gonna have to get creative on the available real estate of my bi-wire crossover bases.

(https://www.audiocircle.com/image.php?id=211631)

(https://www.audiocircle.com/image.php?id=211632)

(https://www.audiocircle.com/image.php?id=211634)

Title: Re: New Copper Caps and introductory pricing
Post by: JOATMON on 28 Jul 2020, 05:19 am
Received my Copper Caps today from GR Research, 12uF, 12uF, 9uF to replace my Mundorf MCap Classic aluminized PP film 33uF.
Build quality is solid and the weight is hefty, especially compared to the MCap.
Gonna have to get creative on the available real estate of my bi-wire crossover bases.

(https://www.audiocircle.com/image.php?id=211631)

(https://www.audiocircle.com/image.php?id=211632)

(https://www.audiocircle.com/image.php?id=211634)

Hi there! I was wondering how you like these new copper caps? I do know that they take some time to burn-in. Thanks!
Title: Re: New Copper Caps and introductory pricing
Post by: TexE4D on 29 Jul 2020, 12:54 am
I haven't yet incorporated the new Copper Caps.
Title: Re: New Copper Caps and introductory pricing
Post by: MokhaMark on 11 Aug 2020, 04:14 pm
Hi Richie,

I just finished my XL-S Encore build, my first ever, and I am ecstatic. I cannot believe the sound coming out of these little boxes.

I learned a lot in the process and I am sure my next crossover will go together more cleanly. I have a friend already interested in buying my first pair so thinking to buy another kit and do it again!

Do you think these new copper caps are over kill for the Encore tweeter?

If I understand correctly, I could build a new cross over (or change existing if there is room) with a 9.0 uF and 12 uF copper cap?

If you do not think it is over kill, and I buy a new Encore kit with these copper caps instead of the Sonicaps, what would the net cost be by deducting the cost of the Sonicaps?

If you prefer I call you, please let me know and I will.

Thank you again for all of your guidance to us newbies. I am really happy with my speakers.

Mark

Title: Re: New Copper Caps and introductory pricing
Post by: MokhaMark on 11 Aug 2020, 04:16 pm
Sorry Danny, I meant to write Danny, not Richie!
Title: Re: New Copper Caps and introductory pricing
Post by: Zitoun on 8 Sep 2020, 12:29 pm
Is the 50% sales over ?
Title: Re: New Copper Caps and introductory pricing
Post by: Danny Richie on 8 Sep 2020, 02:25 pm
I think before I went that far on the X-LS Encore, I would step up to the NX Studio Monitor and take those the extra mile.

And we have still been honoring the sale price.