|
|||||||
| Home | Forums | Rules | Articles | Store | Gallery | Blogs | Register | Donations | FAQ | Calendar | Search | Today's Posts | Mark Forums Read | Search |
| Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum |
| diyAudio Sponsor | ||
|
||
 |
|
|
Thread Tools | Search this Thread |
3rd November 2006, 08:48 AM
|
#1 |
|
diyAudio Member
Join Date: Oct 2006
|
World' smallest GM-70 set
I just finished my mighty little amp using GM-70 last week,am a newbie in this forum,any comment pls advice.
|
|
|
3rd November 2006, 11:40 AM
|
#3 |
|
diyAudio Member
Join Date: Oct 2006
|
Hi.Tweaker
I do not have a link to my project,i use 12HG7 as a driver thru 100H. choke load and feed thru GM70,the chassis size is 12x19 inch.,i 'll post some photo. Arth. |
|
|
|
3rd November 2006, 12:23 PM
|
#4 |
|
diyAudio Member
Join Date: Oct 2006
|
The look inside my amp
|
|
|
|
3rd November 2006, 05:33 PM
|
#5 |
|
diyAudio Moderator
|
Looks very nice. How about a little more description and some schematics?
__________________
www.kta-hifi.net |
|
|
|
3rd November 2006, 05:52 PM
|
#6 | |
|
diyAudio Member
Join Date: Jun 2004
Location: Cool end of a soldering iron NW of Toronto
|
Re: World' smallest GM-70 set
Quote:
Really nice job there! What output xfmers did you use? What is the plate load Z? You are using ultralinear G2 connection to OPT yes?
__________________
I.Q.Test. Have you ever purchased a recreational snowmobile? |
|
|
|
|
3rd November 2006, 06:04 PM
|
#7 |
|
diyAudio Moderator
|
Hi rcavictim,
The GM70 is a triode so he obviously won't be running it in UL as there is no screen grid.. I've included the data sheet as an attachment. I'm actually thinking about getting a pair of these at some point to design and build an amplifier around. I have heard a lot about a supposedly better sounding copper plate version of this tube. Standard plate afaik is graphite. Anyone have any thoughts on this? Triod Lover which version of GM70 do you use?
__________________
www.kta-hifi.net |
|
|
|
3rd November 2006, 06:13 PM
|
#8 | |
|
diyAudio Member
Join Date: Aug 2006
Location: Taxland, New Jersey
|
Very nice construction and wiring job. I like the combination of wood and metal for the chassis too.
Quote:
Victor PS, yup, Kevin confirmed it. If I didn't have as many tubes as I do, I'd buy a few of these too. They sure look cool. |
|
|
|
|
3rd November 2006, 07:27 PM
|
#9 |
|
diyAudio Member
Join Date: Oct 2006
|
Hi..RCAVICTIM,KEVINKR,HOLLOWSTATE
Thank you all for the compliments,GM-70 is a very stable and tough like a tank it is a pure triode no G2,the output is the Electra-print load impedance is 5k.,the sound is very sweet and has a very good bass,the sound stage is just like watching the concert!!!,anyhow,i just burn-in for two weeks i think this tube will need another week or so to get it ready to rock n roll.One con about my amp is it so hot,especially living in Thailand that the temperature quite hot all year!!.I wish i lived in U.S.A or CANADA to get my amp as the heater as well. |
|
|
|
3rd November 2006, 07:27 PM
|
#10 |
|
diyAudio Member
Join Date: Oct 2006
|
Hi...Kevinkr
The GM70 that i used is a copper plate,i test both graphite and copper plate and prefer copper plate much more!!! it has a better tonal balance for me(my opinion anyway). |
|
|
|
| Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
| Thread Tools | Search this Thread |
|
|
Similar Threads
|
||||
| Thread | Thread Starter | Forum | Replies | Last Post |
| Projects for next hollidays (the world smallest VBITNGC??) | Franz G | Chip Amps | 187 | 29th July 2008 09:45 PM |
| Oki Electric Industry intros "world's smallest MP3 chip" | Nordic | Parts | 1 | 16th September 2006 11:21 AM |
| The smallest horns | squalor | Full Range | 1 | 30th July 2005 11:42 PM |
| New To Site? | Need Help? |
| Page generated in 0.13133 seconds (69.45% PHP - 30.55% MySQL) with 11 queries |
