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GB for Hiraga Le Monstre 2024

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EUVL

EUVL

Member
Joined 2003
xen-audio.com
#1
We have quite some PMs asking for PCBs and kits.
Although we are not quite ready yet, we'll open a GB thread so as not to have to answer individually.
So this thread is for preliminary subscriptions.
We shall only confirm GB and call for payment when we are ready to ship.

First and foremost that we want to offer is a set of quad JFETs matched at operating point.
They are all GR grade, no Idss cherry picking.
Anyone can get them unmatched at eBay.
But matching yield is going to be low unless the matching pool is large (>100 pairs).
Or get matched complementary quads at a premium, if available.

JFETs alone would mean postage would cost an additional ~50%
So we offer our PCBs in addition, as there is little or no additional postage charge.
Again, the alternative is to use the Gerber we published of the original design.
Or get one of the many other designs being offered on the internet.

We want to offer a complete set of PCBs for building a pair of power amps.
For the power supply, we decided in the end against multiple LT3045 in parallel.
There are reports around that paralleling them is not without problems.
On top of that, they add 120USD easily to the overall cost, which we consider excessive.
If you believe the PSU to be critical, build the original with CRC and large caps.
Easier to do P2P wiring and no need for any PCBs.
For normal transformer based PSU, we settle on the LT3081, which is very simple to use.
And we shall test before offering (waiting for PCBs right now).
For best results, we shall use a 15V 1.5A pre-reg, such as L7815, to take out most of the 50Hz ripples.
We intend to use a 4700µF 25V Elcap upstream, and a 1µF MKS02 directly at the IC Pins, all direct P2P solder.
There are much larger caps at the input of the dual LT3081 PSU board.

We always use speaker protection.
The Improved PMA Protection circuit used in the F5Pi is unfortunately not suitable for +/-12V rails.
We already successfully tested a new circuit (XEN SSP3) designed specifically for the purpose.

So the entire standard package will include :
1x matched quad 2SK170GR / 2SJ74GR
2x amplifier PCBs
2x Dual LT3081 PSU PCBs
2x XEN SSP3 PCBs
4x TO220 Rectifier PCBs

100€ incl. EU VAT, excl. Postage

Fran wants to make life easier for those with less experience / equipment.
So we offer a limited number of full Q-sets.

The full package will then include all the above, plus
1x matched quad KSA992 / KSC1845
1x matched quad SS8050 / SS8550 -- preferred for the drivers
1x matched quad TTC5200 / TTA1943
4x TO92 heatsinks for Q3,4 black anodised -- for the drivers

140€ incl. EU VAT, excl. postage
Limited to 10 sets

Those interested please help us to keep a running list by updating yourselves.


Thank you for your interest,
Patrick
 
  • Like
Reactions: twitchie
#2
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
.....


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
.....


.
 
#3
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
.....
 
  • Like
Reactions: dieter12
#4
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
.....


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
.....


.
 
#5
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
.....


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
.....
 
#6
uptownsquash said:
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
carolus, Belgium


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
.....


.
Click to expand...
 
#7
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
carolus, Belgium


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
.....


.
 
#9
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
carolus, Belgium
Freebee, Netherlands


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
...
 
#11
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
carolus, Belgium
Freebee, Netherlands


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
...
 
#12
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
carolus, Belgium
Freebee, Netherlands
Arthur, HK


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
...
 
  • Like
Reactions: maximax77
#14
Last edited:
#15
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
carolus, Belgium
Freebee, Netherlands
Arthur, HK
Oracle1, Greece

Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
 
#16
Subscription List :

Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)

DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
carolus, Belgium
Freebee, Netherlands
Arthur, HK
Oracle1, Greece
daanve, Netherlands


Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :

DIYA Nickname, country
 
#17
Subscription List :
Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)
DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
carolus, Belgium
Freebee, Netherlands
Arthur, HK
Oracle1, Greece
daanve, Netherlands
lohk, Austria

Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :
DIYA Nickname, country
 
#18
Subscription List :
Full Set, including all active devices for the amplifier, full PCB set, BoM & instructions, excluding passives and postage :
(limited to 10 sets)
DIYA Nickname, country
HelmutHolz; Germany
UptownSquash, USA
maximax77, UK
carolus, Belgium
Freebee, Netherlands
Arthur, HK
Oracle1, Greece
daanve, Netherlands
lohk, Austria
caffleck, US

Full Set, including JFETS for the amplifier, full PCB set, BoM & instructions, excluding postage :
DIYA Nickname, countr
 
#19
All 10 full sets have been subscribed for.

Fran has agreed to consider extending the quota to 20 sets.
We have limited amount of those specially black anodised heatsinks.
So maybe not providing those for the next sets.

I'll update the lists below.


Thank you for your interest,
Patrick

.
 

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