Discussion:
Marshall AVT275
(too old to reply)
Roland
2005-10-16 14:21:19 UTC
Permalink
Hi,

I would like to know how I can connect an extension cabinet to the AVT275.

Thx
Greg Cisko
2005-10-16 15:20:03 UTC
Permalink
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
***@hotmail.com
Roland
2005-10-16 17:01:22 UTC
Permalink
With 'cabinet' I mean a 'speaker cabinet' or 'cabs'.

So the question is how to connect speaker cabs to the Marshall

http://www.marshallamps.com/product.asp?productCode=AVT275

Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
TD Madden
2005-10-16 18:05:53 UTC
Permalink
Post by Roland
With 'cabinet' I mean a 'speaker cabinet' or 'cabs'.
So the question is how to connect speaker cabs to the Marshall
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
According to the online manual, it has "loudspeaker jack sockets"...but
it only mentions connecting the internal speakers. No word of
additional jacks. Think it's an either/or choice.
Roland
2005-10-16 18:48:03 UTC
Permalink
Post by Roland
So the question is how to connect speaker cabs to the Marshall
...
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
According to the online manual, it has "loudspeaker jack sockets"...but it
only mentions connecting the internal speakers. No word of additional
jacks. Think it's an either/or choice.
Well that's what puzzling me, it has 2 speaker jacks each 8 Ohms. It also
has 2x12 speakers.

So I wonder could I continue using 1 of the internal speakers and connect
the other the the cab?

The manual is extremely vague on what to do with the speaker jacks...

thx
winnard
2005-10-16 21:37:24 UTC
Permalink
Post by Roland
Post by Roland
So the question is how to connect speaker cabs to the Marshall
...
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
According to the online manual, it has "loudspeaker jack sockets"...but it
only mentions connecting the internal speakers. No word of additional
jacks. Think it's an either/or choice.
Well that's what puzzling me, it has 2 speaker jacks each 8 Ohms. It also
has 2x12 speakers.
So I wonder could I continue using 1 of the internal speakers and connect
the other the the cab?
The manual is extremely vague on what to do with the speaker jacks...
When I had mine, I unplugged both of them and hooked one into a cabinet,
but then you lose the stereo effect. It wasn't that much louder,
unfortunately. The AVT's sound worse with louder volumes opposed to a tube
amp sounding better. The AVT sounds really good at low volumes, and that
makes it a pretty good bedroom amp.


winnard
Greg Cisko
2005-10-17 06:12:07 UTC
Permalink
Post by Roland
With 'cabinet' I mean a 'speaker cabinet' or 'cabs'.
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Roland
2005-10-17 06:25:45 UTC
Permalink
It has indeed 2 outputs, labeled as "Right (min 8 Ohms)" and "Left (min 8
Ohms)", I also have an 8 ohms cab.

This is all that's in the manual on the speaker jacks
"Loudspeaker Jack Sockets

These connect the internal loudspeakers to the stereo power amplifier
outputs.

WARNING: Always provide both with a load equal to, or greater than 8 Ohms."

So I'm thinking I could unplug one of the intrenal speakers and connect the
cab, yet leaving the other internal speaker plugged in. SO instead of using
two internals, use one internal and the cab.

Thx
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Greg Cisko
2005-10-17 06:46:27 UTC
Permalink
Post by Roland
So I'm thinking I could unplug one of the intrenal speakers and connect
the cab, yet leaving the other internal speaker plugged in. SO instead of
using two internals, use one internal and the cab.
Your 2 realistic options are to leave it as it is with no additional
speaker cab additions or get a head. Why is it you think you
need the additional speaker(s)?
--
Post by Roland
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Roland
2005-10-17 16:17:19 UTC
Permalink
Well, I have ordered a cab and a head. Cab will be delivered this week, for
the head I have to wait (mayby 2 months).

So I was looking for a way to try out the cab connected to the Marshall,
before I got the head. That's why the question:-)

So it's not because I think the Marshall needs a cab.

Thx
Post by Greg Cisko
Post by Roland
So I'm thinking I could unplug one of the intrenal speakers and connect
the cab, yet leaving the other internal speaker plugged in. SO instead of
using two internals, use one internal and the cab.
Your 2 realistic options are to leave it as it is with no additional
speaker cab additions or get a head. Why is it you think you
need the additional speaker(s)?
--
Post by Roland
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Greg Cisko
2005-10-18 03:39:11 UTC
Permalink
What kind of head? And what cab? Sorry if you mentioned it already.
--
Post by Roland
Well, I have ordered a cab and a head. Cab will be delivered this week,
for the head I have to wait (mayby 2 months).
So I was looking for a way to try out the cab connected to the Marshall,
before I got the head. That's why the question:-)
So it's not because I think the Marshall needs a cab.
Thx
Post by Greg Cisko
Post by Roland
So I'm thinking I could unplug one of the intrenal speakers and connect
the cab, yet leaving the other internal speaker plugged in. SO instead
of using two internals, use one internal and the cab.
Your 2 realistic options are to leave it as it is with no additional
speaker cab additions or get a head. Why is it you think you
need the additional speaker(s)?
--
Post by Roland
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Roland
2005-10-18 19:13:30 UTC
Permalink
I'm planning to get a Matamp minimat and 212 cab also from Matamp

http://www.matamp.co.uk/amps.htm

Roland
Post by Greg Cisko
What kind of head? And what cab? Sorry if you mentioned it already.
--
Post by Roland
Well, I have ordered a cab and a head. Cab will be delivered this week,
for the head I have to wait (mayby 2 months).
So I was looking for a way to try out the cab connected to the Marshall,
before I got the head. That's why the question:-)
So it's not because I think the Marshall needs a cab.
Thx
Post by Greg Cisko
Post by Roland
So I'm thinking I could unplug one of the intrenal speakers and connect
the cab, yet leaving the other internal speaker plugged in. SO instead
of using two internals, use one internal and the cab.
Your 2 realistic options are to leave it as it is with no additional
speaker cab additions or get a head. Why is it you think you
need the additional speaker(s)?
--
Post by Roland
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Greg Cisko
2005-10-18 22:22:39 UTC
Permalink
2 watts should certainly melt the paint. Good luck with that ;-)
--
Post by Roland
I'm planning to get a Matamp minimat and 212 cab also from Matamp
http://www.matamp.co.uk/amps.htm
Roland
Post by Greg Cisko
What kind of head? And what cab? Sorry if you mentioned it already.
--
Post by Roland
Well, I have ordered a cab and a head. Cab will be delivered this week,
for the head I have to wait (mayby 2 months).
So I was looking for a way to try out the cab connected to the Marshall,
before I got the head. That's why the question:-)
So it's not because I think the Marshall needs a cab.
Thx
Post by Greg Cisko
Post by Roland
So I'm thinking I could unplug one of the intrenal speakers and
connect the cab, yet leaving the other internal speaker plugged in. SO
instead of using two internals, use one internal and the cab.
Your 2 realistic options are to leave it as it is with no additional
speaker cab additions or get a head. Why is it you think you
need the additional speaker(s)?
--
Post by Roland
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Is this some kind of joke or something?
--
Roland
2005-10-19 05:58:16 UTC
Permalink
Aha the debate on how loud is 2 Watt:-)

Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...

Roland
Post by Greg Cisko
2 watts should certainly melt the paint. Good luck with that ;-)
--
Post by Roland
I'm planning to get a Matamp minimat and 212 cab also from Matamp
http://www.matamp.co.uk/amps.htm
Roland
Post by Greg Cisko
What kind of head? And what cab? Sorry if you mentioned it already.
--
Post by Roland
Well, I have ordered a cab and a head. Cab will be delivered this week,
for the head I have to wait (mayby 2 months).
So I was looking for a way to try out the cab connected to the
Marshall, before I got the head. That's why the question:-)
So it's not because I think the Marshall needs a cab.
Thx
Post by Greg Cisko
Post by Roland
So I'm thinking I could unplug one of the intrenal speakers and
connect the cab, yet leaving the other internal speaker plugged in.
SO instead of using two internals, use one internal and the cab.
Your 2 realistic options are to leave it as it is with no additional
speaker cab additions or get a head. Why is it you think you
need the additional speaker(s)?
--
Post by Roland
Post by Greg Cisko
Post by Roland
So the question is how to connect speaker cabs to the Marshall
It has 2 outputs right? Are the already connected to the 2 internal
speakers? If the answer is yes, you can unplug the internal speakers
and plug in a cab. But as others have cautioned, you must ensure that
you have appropriate impedance. Perhaps if you post what kind of cab
and the ohms along with how the amp is setup, it would help.
--
Post by Roland
http://www.marshallamps.com/product.asp?productCode=AVT275
Thx
Post by Greg Cisko
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to
the AVT275.
Is this some kind of joke or something?
--
jh
2005-10-19 12:28:39 UTC
Permalink
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp
does not know whether the speaker is "internal" or "external". It seems
that the min load impedance of the AVT275 power amp is 8ohms.

regards

Jochen
Greg Cisko
2005-10-19 20:30:48 UTC
Permalink
Post by jh
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp does
not know whether the speaker is "internal" or "external". It seems that
the min load impedance of the AVT275 power amp is 8ohms.
Roland, here is your confirmation.

2 watts... haha..
--
***@hotmail.com
jh
2005-10-19 20:55:00 UTC
Permalink
Post by Greg Cisko
Post by jh
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp does
not know whether the speaker is "internal" or "external". It seems that
the min load impedance of the AVT275 power amp is 8ohms.
Roland, here is your confirmation.
2 watts... haha..
--
ouch
Roland
2005-10-20 16:42:17 UTC
Permalink
Did you notice that this 2 watt tube head even has a attenuator because it
can be too loud!

Cheers;-)
Post by Greg Cisko
Post by jh
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp does
not know whether the speaker is "internal" or "external". It seems that
the min load impedance of the AVT275 power amp is 8ohms.
Roland, here is your confirmation.
2 watts... haha..
--
ouch
jh
2005-10-20 17:59:31 UTC
Permalink
Post by Roland
Did you notice that this 2 watt tube head even has a attenuator because it
can be too loud!
Cheers;-)
Post by Greg Cisko
Post by jh
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp does
not know whether the speaker is "internal" or "external". It seems that
the min load impedance of the AVT275 power amp is 8ohms.
Roland, here is your confirmation.
2 watts... haha..
--
ouch
Roland,
I´ve gota H&K Cream Machine, I know how loud one simple watt can be...

Have fun with it

Jochen
Greg Cisko
2005-10-20 18:28:20 UTC
Permalink
Post by Roland
Did you notice that this 2 watt tube head even has a attenuator because it
can be too loud!
Hey cool. Looks like you are all set...
--
Post by Roland
Cheers;-)
Post by Greg Cisko
Post by jh
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp does
not know whether the speaker is "internal" or "external". It seems that
the min load impedance of the AVT275 power amp is 8ohms.
Roland, here is your confirmation.
2 watts... haha..
--
ouch
Roland
2005-10-20 19:19:14 UTC
Permalink
Thanks all for the replies,

Roland
Post by Greg Cisko
Post by Roland
Did you notice that this 2 watt tube head even has a attenuator because
it can be too loud!
Hey cool. Looks like you are all set...
--
Post by Roland
Cheers;-)
Post by Greg Cisko
Post by jh
Post by Roland
Aha the debate on how loud is 2 Watt:-)
Don't seem to get a confirmation on if I can simply unplug 1 internal
speaker and connect it to the cab...
Roland
Hi Roland
If the external speaker is an 8 ohm, then there should be no problem if
you disconnect the built in speaker and connect another one. The amp does
not know whether the speaker is "internal" or "external". It seems that
the min load impedance of the AVT275 power amp is 8ohms.
Roland, here is your confirmation.
2 watts... haha..
--
ouch
winnard
2005-10-16 15:54:28 UTC
Permalink
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Thx
Hire a plumber.


winnard
PMG
2005-10-16 18:40:53 UTC
Permalink
On Sun, 16 Oct 2005 16:21:19 +0200, "Roland"
Post by Roland
Hi,
I would like to know how I can connect an extension cabinet to the AVT275.
Thx
With solid state amps, find out what the amp's minimum ohms rating is.
Don't go below that.

If that amp's minimum ohms is 4ohms, and it now has 8ohms connected,
you could add another 8ohm cabinet, and you'd be at the 4ohms minimum
then.

And obviously... make sure the speakers in your extension cabinet can
handle enough watts.

Pete

--
I once battled a giant 50 foot ant.
Thing like that changes a man. --Space Ghost
VMI
2005-10-21 18:52:13 UTC
Permalink
Hi Roland,
Do not connect a cab or speaker or whatever to this amp if it's under 8
Ohms.
The amplifier in this AVT275 is a chip amp (TDA7293).
You'll blow the amp.
I have them fairly regular in repair because of exactly these
manipulations; connecting a 4 Ohm cabinet.
It's a dual amp combo and it needs both outputs to be loaded with
minimum 8 Ohms. (if you want sound from both amps off course...)

I found that it's one of the very few amps that can allmost reproduce
the sound of the Spotniks, a swedish guitar group from the sixties.
Try to play Johny Guitar on it.

Cheers and a lot of fun.

Zilog

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