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Amplifiers

Posted: Wed Jan 25, 2023 10:49 am
by Indeterminacy

Re: Amplifiers

Posted: Wed Jan 25, 2023 11:25 am
by crochambeau
AB1100a.JPG
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AB International Precedent 1100a
https://en.audiofanzine.com/dual-channe ... r_reviews/

Re: Amplifiers

Posted: Wed Jan 25, 2023 7:12 pm
by FLORIDA MAN
Image

Re: Amplifiers

Posted: Thu Jan 26, 2023 3:30 pm
by Indeterminacy

Re: Amplifiers

Posted: Thu Jan 26, 2023 3:37 pm
by Indeterminacy
Boogie MKII-B Colesium 180watts. 15" Electro Voice.
This model is the loudest guitar amp I ever played through.

Boogie mkiib coliseum edit.jpg
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Re: Amplifiers

Posted: Fri Jan 27, 2023 3:32 pm
by Indeterminacy
crochambeau wrote: Wed Jan 25, 2023 11:25 am Image
Nice flex with the Eventide.

Back on track.


Altec Lansing 1270
altec 1270 edit.jpg
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Re: Amplifiers

Posted: Fri Jan 27, 2023 3:50 pm
by crochambeau
I figured the choice between a powered up and operational amplifier that is not glamorous or a cool amp that is presently an inoperable project demanded function over form.

I do need to move the Eventide into a more convenient to use place.

Here are some dusty tube public address amps:
dustyamps.JPG
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Bogen H30
Bogen M60A
Allied Knight KN3050
Harmon Kardon DA100

Funny, I'm watching an old public service nuclear film (The Day Called X) that starts with a horn like the one you've got in you avatar.

Re: Amplifiers

Posted: Sun Jan 29, 2023 12:08 am
by Indeterminacy
Altec 1568A power amp.
https://reverb.com/item/33374624-1960-s ... -amplifier
Altec tube amp.jpg
Altec tube power amp.jpg
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Re: Amplifiers

Posted: Sun Jan 29, 2023 3:08 pm
by Indeterminacy
OTOMON Laboratory 300B SE tube pre amplifier for planar magnetic headphone

http://soundgate.net/product/MTM4OQ...highend
Response frequency 16Hz ~ 85KHz (-1db) 1W
Hum level : 0.03mV(16ohm)
THD: 0.1% 1W
Output impedance: 8~32 ohm
Output power: 5-6W (16ohm)
Input voltage 100V,117,230V.
Input impedance is 600ohm or 20K, output is 8~16 ohm

It can be used as preamp or buffer amp for power transformer.
300se headphone amp with headphones.jpg
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300se headphone amp.jpg
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300se headphone amp gut shot.jpg
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Re: Amplifiers

Posted: Sun Jan 29, 2023 4:39 pm
by crochambeau
Looks a little rich for my blood.

Here's an old single ended 6BQ5 amp that could drive a set of cans, assuming the impedances were low enough.
MonarchSA614.JPG
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Poor old Amperex. I need to freshen this one up, no gutshot today.
MonarchSA614inside.JPG
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