Newbie question on cheap amp kits - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 4th August 2002, 03:49 PM   #11
diyAudio Member
 
Join Date: Aug 2002
Location: Austin, TX
Dave,

I like your idea, but I don't think I have the experience to select the right components to match the existing iron in the amp I buy.

I really don't think I will need a push-pull amp. I did a test with me sound level meter in my room and I think SE amps could give me what I want.

I originally created my budget of $500 because i saw kits for $600-700, and I thought I could make one cheaper if I did it myself. After studying it more closely, I realize my budget may be too low. For instance, I found this simple 300B schematic:

http://indigo.ie/~walton/300b.html

Doing an estimation on the cost of all the components recommended would be over $900, and this is for a simple setup. Now all of the components recommended seem top quality, maybe I can reduce the cost by going for cheaper components and then upgrading the amp later.

Andrew
  Reply With Quote
Old 8th August 2002, 05:27 AM   #12
dice45 is offline dice45  Germany
diyAudio Member
 
Join Date: Jan 2002
Location: Munich, Bavaria
Andrew,
1st,
Bottlehead kits have such a long waiting list because they offer an extremely good bang for the buck.

2nd,
one of our member's, Gabevee, offers an amplifier kit right in your budget. to me it seems from what he write on his website he is knowing well what he is doing.
And, i would be glad, selfish me, to have some 1st hand experience report.
If i would be you and could live with a power amp alone, i would definitely go with the tube-rectified version. And i would not hesitate to order the kit with Magnequest transformers. (I am not happy with the Mike the Magnequest guy but his trannies are extraordinarily good; Gabe certainly knows why he is offering them). I would spend those $175.

The amp i am meaning is here

But Gabevee also has two single ended designs which cost slightly more. The reason why i recommend the pushpull amp is because it gives you a wider range of speakers the amp is happy with.

On my open baffle speaker i prefer a Manfred Huber's 2.5W PP amp to any SE amp so far. Better control. The amp has Magnequest nickel trannies BTW.
Dave, you hear me, i am not kidding.
__________________
Greets,
Bernhard
  Reply With Quote
Old 8th August 2002, 05:45 AM   #13
frugal-phile(tm)
diyAudio Moderator
 
planet10's Avatar
 
Join Date: Oct 2001
Location: Victoria, BC, NA, Sol III
Blog Entries: 5
Quote:
Originally posted by dice45
On my open baffle speaker i prefer a Manfred Huber's 2.5W PP amp to any SE amp so far. Better control. The amp has Magnequest nickel trannies BTW.
Dave, you hear me, i am not kidding. [/B]
I hear you. Next task is fixing the roof, then it can start raining and i can get in the lab and get some amps built -- i have the raw material for the EL84 PP sitting where i have to look at itnevery day as i walk past.

Have i "seen" Manfred's little amp?

dave
__________________
community sites t-linespeakers.org, frugal-horn.com, frugal-phile.com ........ commercial site planet10-HiFi
p10-hifi forum here at diyA
  Reply With Quote
Old 8th August 2002, 06:14 AM   #14
diyAudio Member
 
Join Date: Aug 2002
Location: Austin, TX
Just wanted to inform everybody that I have ordered a PP kit from Gabevee. I did go with the tube rectifiers and got it without a chassis so I can make my own. Thanks for all the input.

Andrew
  Reply With Quote
Old 8th August 2002, 04:45 PM   #15
diyAudio Member
 
Thatch_Ear's Avatar
 
Join Date: Nov 2001
Location: Dallas,Tx
Andrew,
There is a Texas Bottlehead group on Yahoo. Find it and join. There are a number of DIY tube guys in Austin that belong to this group and having gone to a meeting the gear is not just stuff from Doc Bottlehead by any means. You need to get the email for a member whose handle is Twystd or something simular to that. He is or was a dealer of TJ 300Bs. I am sure he would let you listen to his rig.
Not knowing what your speakers are if they are towers with 4 way crossovers of 24db slopes and zobels etc a SE will not work as the cross would suck all the power before it even got to the drivers.
Watts and SPLs can be very misleading. I listened to the new TOTL KEFs yesterday and even though the factory specs rate them at 91 db I don't know that they would sound good on my 300B because of the complex crossover network.
Synergy is all.
__________________
Thatch
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Newbie: Kits better than my XR-57? wushuliu Class D 0 20th November 2008 08:42 PM
newbie question - all-in-one d-class amp kits ? steamPunk Class D 19 26th October 2008 02:37 PM
Looking for cheap SPDIF DAC kits? theAnonymous1 Digital Source 1 9th June 2006 05:59 PM
Any Cheap Tube-amp kits out there PaulHilgeman Tubes / Valves 6 23rd October 2003 06:28 PM


New To Site? Need Help?

All times are GMT. The time now is 03:29 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2