Bottleneck Push-Pull Salvage Amplifier Competition

RayP · 6528

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Offline RayP

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on: April 03, 2014, 01:29:15 AM
At our recent Mid Atlantic Bottleneck meet we decided to hold our next competition at our meet on October 18. It will be for a push-pull amp to drive a pair of high efficiency speakers. To lower the cost, we have specified that you you use or reuse items from your stash. Details at

http://bottlenecksaudio.blogspot.com/2014/04/push-pull-salvage-amplifier-competion.html

As the rules state, we only allow entries that are carried in through the front door by the builder. However, there is nothing to stop you from planning what you would build if you lived in the DC area.

In past competitions we have specified that the container should come from Ikea (6V6 competitiion) and Target (line stage). This time, in line with the salvage principle, we ask that the amp be housed in or incorporate some piece of old audio or electrical gear such as an old receiver.

Ladies and gentlemen, start your soldering irons.

ray


Ray Perry

Offline debk

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Reply #1 on: April 03, 2014, 02:55:48 AM
Can they be monoblocks or must it all be on the same chassis

Debra

Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline JamieMcC

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Reply #2 on: April 03, 2014, 05:13:28 AM
Interesting I don't suppose there is a page which has a some pics posted of previous competition entries? I would love to see some of the ideas you guys have come up with in past competitions. The idea sounds intriguing even though I havn't a clue what a push pull amp is...

Edit just found them on the blog page  :D
« Last Edit: April 03, 2014, 05:26:05 AM by JamieMcC »

Shoot for the moon if you miss you will still be amongst the stars!

Offline debk

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Reply #3 on: April 03, 2014, 06:18:53 AM
It is a lot of fun.  I did their line stage conestest and had a blast.  Though it is a 7 hour drive for me, I am seriously thinking about building somehting for this contest.
A good way to use some of the parts I have accumulated over the years  :)

Debra

Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline Paul Joppa

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Reply #4 on: April 03, 2014, 07:02:51 AM
I happened to be on the East Coast at the right time, and attended the same meeting that Deb did. Had a great time, lots of excellent sound, and the creativity expressed in the various products was simply glorious! Both electronic and visual design elements were impressive.

Paul Joppa

Offline dbishopbliss

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Reply #5 on: April 03, 2014, 10:33:14 AM
The more the merrier.

Paul, will you be coming to Richmond this summer?  I'm sure there are a lot of people who would enjoy meeting you again.

David B Bliss
Bottlehead: Foreplay I, Foreplay III, Paramour I w/Iron Upgrade, S.E.X. w/Iron Upgrade
Speakers: FE127E Metronomes, Jim Griffin Jordan/Aurum Cantus Monitors, ART Arrays
Other: Lightspeed Attenuator, "My Ref" Rev C Amps, Lampucera DAC

Offline RayP

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Reply #6 on: April 03, 2014, 12:25:58 PM
Monoblocks would be fine.

ray

Ray Perry

Offline Paul Joppa

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Reply #7 on: April 06, 2014, 11:42:53 AM
Quote from: dbishopbliss on April 03, 2014, 10:33:14 AM
The more the merrier.

Paul, will you be coming to Richmond this summer?  I'm sure there are a lot of people who would enjoy meeting you again.
I expect to be in Richmond June 15-21 and could add a day or two on either end, i.e. Saturday 14th or Sunday 22nd. But the competition is a long time later!

Paul Joppa

Offline debk

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Reply #8 on: April 22, 2014, 03:31:50 AM
As much as I want to build something and enter the competition, I can't make it that date.  It is the same date as the American Academy of Ophthalmology meeting.
I have spent a bit of time looking  at diffrent ideas, I think I will build something anyways and see how it sounds.
Just what I need another amp  :)

Debra

Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline RayP

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Reply #9 on: April 23, 2014, 04:10:30 PM
That's a pity your can't come. Closer to the time of the competition, perhaps you could let us know what you finished up building.

I've started to build my entry. It's a challenge to work out how to get it all to fit into the shell of an old receiver and at the same time flexible enough to effectively bread-board the circuitry. It's already much heavier than the original receiver.

ray

Ray Perry

Offline RayP

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Reply #10 on: August 18, 2014, 01:23:48 AM
Just a reminder that there are two months before the competition on October 18.

I'm actually working on two amplifiers in the hope that one of them actually works. I should have one cpmpleted by the end of August.

ray

Ray Perry

Offline debk

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Reply #11 on: August 18, 2014, 11:23:26 AM
I have all the parts and just have to put it together.  Maybe I will have time near the end of the  month, first I need to finsh the rocket project I am flying next month in the Blackrock desert.

Again I wish I could make it to the competition, but I will let you know what I came up with

Deb

Debra K

Eros 2Phono amp
BeePre2, Psvane ACME 300b
Kaiju, Linlai Elite  300b
Monamour 2a3 amps various tubes
Sota Sapphire, Pete Riggle Woody Tonearm, Kiseki Purpleheart Cartridge
Rega P6 Ania Pro cartridge
Roon Nucleus
MHDT Labs Orchid DAC
Jager speakers

Offline RayP

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Reply #12 on: September 18, 2014, 10:04:15 AM
One month to go.

I'm hoping to start powering up an amp in the next day or so.

ray

Ray Perry

Offline dbishopbliss

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Reply #13 on: September 23, 2014, 08:28:13 AM
Unfortunately, I don't think I will have an entry - I have the parts, but not the time.  I can bring a Dynaco ST70 or a Marshall 9004 (meant for guitar, but its a stereo amp) if there are not enough entries.

David B Bliss
Bottlehead: Foreplay I, Foreplay III, Paramour I w/Iron Upgrade, S.E.X. w/Iron Upgrade
Speakers: FE127E Metronomes, Jim Griffin Jordan/Aurum Cantus Monitors, ART Arrays
Other: Lightspeed Attenuator, "My Ref" Rev C Amps, Lampucera DAC

Offline RayP

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Reply #14 on: September 24, 2014, 12:00:24 PM
Is anybody other than myself actually building anything?

I'm hoping to fire up one of my amps tomorrow.

ray

Ray Perry

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