Welcome, Guest. Please Login or Register
Decware Audio Forums
11/28/14 at 20:49:19


Pages: 1
Send Topic Print
Sorry, have to share (Read 1581 times)
Lyndon
Verified Member
**




Posts: 4
Sorry, have to share
12/02/09 at 21:27:45
 
Thanks for clicking.  I just finished two Decware kits, a Zen headphone amp kit and an SE84C kit.  I'm not new to kit-building, but this is my first experience with a true headphone amp, and it's my first SET amp also.  The solder joints are still warm, and the SE84C is handcuffed by a pair of 89db bookshelf speakers (Vienna Acoustic Hayden), but both amps still sound TREMENDOUS.  I'm blown away.  I can't wait to hear what they sound like with a few hours on them.

I'll post more detailed impressions a little later.  And don't worry, more efficient speakers are in the planning stages.

Pic in my next post...
Back to top
 
 
  IP Logged
Lyndon
Verified Member
**




Posts: 4
Re: Sorry, have to share
Reply #1 - 12/02/09 at 21:30:10
 
Pic:
Back to top
 

dec_amps.jpg
  IP Logged
Lon
Seasoned Member
****


"Love without
guts is
worthless!"
Philip K. D*ck

Posts: 7827
Re: Sorry, have to share
Reply #2 - 12/02/09 at 21:41:02
 
Congrats!  Nice looking work.
Back to top
 
 

Decware:ERR,HR-1,ZP3,CSP2+,Torii Mk III,PS Audio PWT+DS,PowerBases,PPP,AC-12 pcs, Denon DVD-A1UDCI, Rega RP3 +TTPSU,white belt+Exact2, VooDoo Cable:Stradivarius, Ultra Linear+Evo ICs, Iso-Pods,Mapleshade:Double Heiix Plus,Samsonv2+v3 +4" platforms,Herbie's Iso-Cup
  IP Logged
Doorman
Seasoned Member
****


"pouring from
the empty into the
void"

Posts: 427
Re: Sorry, have to share
Reply #3 - 12/02/09 at 23:13:35
 
Yes, well done!
The "industrial"(?) look is very nice!
Best, Don
Back to top
 
 

Decware SE34I w/ CCE mod, ZCD, Heybrook/Linn/Clearaudio, Hagerman,
Goertz/Wireworld/cat-5/MarkAudio Alpair 10.2 drivers
(eN) in DIY Mar-Ken cabs
  IP Logged
dank
Seasoned Member
****


pair of dual 18
Imperials

Posts: 275
Re: Sorry, have to share
Reply #4 - 12/03/09 at 00:55:14
 
Lyndon

Be sure that pin 6 of each output tube (shown as a n/c on the schematic) connects to pin 3 directly (normal) or through a .1 uf 400v capacitor (CCE mod).   Some output tubes have this connection internally and some don't (6p15p).  I think some boards have the connection (so it must be drilled to install the CCE mod) and some boards don't.  If you have a board w/o the connection and you are using 6p15p tubes you only get about 1/2 watt output before it starts to distort (but it sounds great up to that 1/2 watt).

Also check the forum Zkit1 support section if you are getting hum thats louder than you think it should be.

DanK
Back to top
 
 
  IP Logged
Lyndon
Verified Member
**




Posts: 4
Re: Sorry, have to share
Reply #5 - 12/03/09 at 04:58:59
 
Thanks for the comments guys!  "Industrial" hits it on the head.  Lean and mean.

I performed the CCE mod as you suggested dank.  The pcb came with a trace connecting pins 3 & 6 of the output tubes, so I cut it and soldered in a cap.  I thought about waiting to do the mod until I'd heard the unaltered amp, but finally decided to do it from the get-go.

I don't hear any hum, even right next to the speaker (my speakers aren't very sensitive though).
Back to top
 
 
  IP Logged
Pages: 1
Send Topic Print