OT old amp questions
xnoel
Posted 2006-06-29 10:37 AM (#249016)
Subject: OT old amp questions


Joined:
September 2003
Posts: 782

Location: Waurika OK
I posted in another thread about an amp that I was probably going to buy back.
A friend of mine bought it used in about 74,75. I later bought it from him then traded it in on my first ovation. Another friend bought it from the store. It is now sitting back in my "music room".
It is an Alamo Fury bass amp. Not a full tube amp, but has 2 7868 and 1 12ax7 tubes.

It is fully enclosed. I took the back off to look at the speaker (15 inch). No name on it just some numbers:
15 LA 20 and 67 7331.
Can anyone ID the speaker mfg and the date from these numbers?

Also the speaker enclosure had fiberglass insulation on the sides and covering the speaker, looks like factory installed. (I know it was fiberglass because my arms are itching) Was this standard practice?

It is very solidly built (5/8's plywood)and in very good condition. I had it retubed and worked on about three years ago, so it should be good for another 30 years.

By the way my elite T sounds good through it, big open sound. I guess that 15 inch speaker helps.
thanks
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Hobie
Posted 2006-06-29 3:33 PM (#249017 - in reply to #249016)
Subject: Re: OT old amp questions


Joined:
April 2006
Posts: 103

Location: Townsville, Australia
I know little about speakers, but an old set of stereo speakers (for hi fi, not live music) I have had for 33 years finally reached their used by date and when i took them apart they had fibreglass in them.

As I recall from my hi fi days this was common practice to stop the bass reverbing in a sealed box. I think this was before they used ports etc on speakers to allow them more space for the bass.
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Sleepy Eyes McGee
Posted 2006-06-30 4:20 PM (#249018 - in reply to #249016)
Subject: Re: OT old amp questions


Joined:
June 2005
Posts: 231

Location: N.J.
Back in the 80's it was pretty common with alot of guys I knew that had Marshall cabs. If they werent happy with the bottom end the 1st thing they would do is open them up and start stapling fiberglass insulation on the inside.I never saw a cabinet come from the factory with it,but it may be possible.
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