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First One - mosFET amplifier module

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A

AP2

Banned
Joined 2009
Strange LC not notice this.
This happens only with a DPS-500. therefore, we need an attenuator.
Ab test of what we talk? same old story?

this is recording of output voltage on load with music.
You think maybe is not udible the spl difference?

is unacceptable, your behavior (Esperado), and LC.
this is the reason that I want to run away from this thread.
 

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H

HiroPro

Member
Joined 2009
Just to clarify I also want black. BTW is there a picture of this chassis?

jaggel said:
I also changed my chassis to black...:)

luca 4
danny_66 2
woofertester 4
rainerco 2
pinnocchio 2
jokari69 2
mksung 2
ZZoran 2
Edgar 2
Eric06 2
kimon 2
maxidcx 2 (chassis black)
edbk 2 (chassis)
metallicus69 2
scoutOne 4
quan 2
Greg Stewart 2
colesey 2 (chassis)
analogsa 4
Theodosis O. 2
chunek 2
CaféNoir 4 (chassis)
Nikitas 2 (chassis)
meanman1964 2
jeremysk 2
Dane 2
mikvous 2 (chassis)
PreSapian 2
coolewater 2
edionysus 2 (chassis)
jaggel 2 (chassis black)
fredlock 2
HiroPro 2 (chassis black)
Turbon 2 (chassis)
r8833 2
androa76 2
JethroTull 2
stonehome 2 (chassis)
commstech 2
we417 2
hcbonfim 2
stormsonic 2 (chassis)
fishball79 4
Catal 2
Overkill Audio 7
touchdown 2
sebbyp 2
a333bt 2
flyboi 4
rellum 2
huibert34 2 (chassis)
tjencks 2
back 4
gusto142 2 (chassis)
julcat 2 (chassis)
taccodude 2
glt 2
Click to expand...
 
K

kimon

Member
Joined 2011
Dear LC I read your message today and thank you for your good work.I want to mention some points of interest that might be useful to the GB members: 1)Payment methode;Paypal's 5% fee on 500-600 euros order is a considerable amount of money.Is it possible,alternatively, to have payment send to your bank account ? (like in the VSSA GB). 2)I am interested also in the FO chassis;I didn't order it with the modules, because it was too early.Maybe I am wrong,but I thought that every GB member would receive informations about GB offers, i.e.modules,chassis and postages for both.Should I change my order or place a new one?If some delay occurs because of that, it's okay with me.
 
Lazy Cat

Lazy Cat

Member
Joined 2007
shanachai said:
Hello LC,

My goal is to build an integrated amplifier.
What else do I need besides the two FO modules, the SMPS and the chassis?

Greetings from Greece
Shanachai
Click to expand...

Please read post #634 ;)

gusto142 said:
Hi LC,

Were the capacitors from the SPMS's also burned in?
Perhaps a good idea to repeat the listening tests next week (for confirmation) before comparing single and dual SMPS operation.

regards,
John
Click to expand...
Yes, more than 30 hours of burn-in period for all SMPS-s in the test.


MartinQ said:
How closely were the output levels matched during the AB (ABX?) testing?

Did you match by voltage or by audio level?
Click to expand...

All First One amps have the same gain. Volume control set on the same level for each track played.

HiroPro said:
Just to clarify I also want black. BTW is there a picture of this chassis?
Click to expand...

Yes, post #533. Black is the same design and will be posted later when prepared. ;)

kimon said:
Dear LC I read your message today and thank you for your good work.I want to mention some points of interest that might be useful to the GB members: 1)Payment methode;Paypal's 5% fee on 500-600 euros order is a considerable amount of money.Is it possible,alternatively, to have payment send to your bank account ? (like in the VSSA GB). 2)I am interested also in the FO chassis;I didn't order it with the modules, because it was too early.Maybe I am wrong,but I thought that every GB member would receive informations about GB offers, i.e.modules,chassis and postages for both.Should I change my order or place a new one?If some delay occurs because of that, it's okay with me.
Click to expand...

I apologize for any inconvenience but for this GB payments via PayPal only.

You can order modules first, chassis after or wait and order both of them later, no problem. Send me PM and I'll prepare you an offer.
 
Lazy Cat

Lazy Cat

Member
Joined 2007
First One GB list update

Hi GB members :wave2:

Thanks for the payments, some of you are faster than lightning. :D

Today the offers for GB members who's ordered chassis will be send out. ;)

Chassis will be completely prepared for SMPS1200A400, Hypex, power supply. :cool:



luca 4
danny_66 2
woofertester 4
rainerco 2
pinnocchio 2
jokari69 2
mksung 2
ZZoran 2
Edgar 2
Eric06 2
kimon 2
maxidcx 2 (chassis black)
edbk 2 (chassis)
metallicus69 2
scoutOne 4
quan 2
Greg Stewart 2
colesey 2 (chassis)
analogsa 4
Theodosis O. 2
chunek 2
CaféNoir 4 (chassis)
Nikitas 2 (chassis)
meanman1964 2
jeremysk 2
Dane 2
mikvous 2 (chassis)
PreSapian 2
coolewater 2
edionysus 2 (chassis)
jaggel 2 (chassis black)
fredlock 2
HiroPro 2 (chassis)
Turbon 2 (chassis)
r8833 2
androa76 2
JethroTull 2
stonehome 2 (chassis)
commstech 2
we417 2
hcbonfim 2
stormsonic 2 (chassis black)
fishball79 4
Catal 2
Overkill Audio 7
touchdown 2
sebbyp 2
a333bt 2
flyboi 4
rellum 2
huibert34 2 (chassis)
tjencks 2
back 4
gusto142 2 (chassis)
julcat 2 (chassis)
taccodude 2
glt 2
 

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S

shanachai

Member
Joined 2014
Lazy Cat said:
Thanks for kind words shanachai

First One is power amplifier module with input impedance 10 kOhm and 1,5 Vrms input sensitivity for full power output.

Preamplifier is needed to switch between the inputs - input selector and to have at least output buffer - volume control. It can have 0 dB or + 10 dB voltage gain too, depending to your source's output level.

My suggestion: RelaiXedSMD -- DIY balanced pre-amplifier ;)
Click to expand...

LC, many thanks for the answer and apologies for the double post (page 64 was not being displayed).
 
BYRTT

BYRTT

Member
Joined 2009
taccodude said:
This Site doesn`t won`t show the last posts and Pages above 61 don`t open.
Click to expand...
irribeo said:
..........reg. page 61 jumping? works ok here with google chrome, maybe clearing browser history solves problem??
Click to expand...
shanachai said:
LC, many thanks for the answer and apologies for the double post (page 64 was not being displayed).
Click to expand...
For others who have trouble with displaying certain pages, try as irribeo suggested "clearing your browser history cache". It worked for me and I'm on Win7 and IE11. The problem started when moderator cleaned thread for some post's.
 
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