Guide to buying tube amps

idealassets

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I just obtained a used Fender Acoustasonic DSP 40 watt per channel stereo amp at a good price. I will be trying it out over the next few days. It is not among the elite electronics that has been covered here so far.

I will be using it through the PA at small gigs and open mic's. -everyone has to start somewhere. It is made in Mexico, at least not a rice burner. I like the retro look of the tweed. Does anyone else have any experience or helpful suggestions for this amp?

Thanks,
Craig
 

capnjuan

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hideglue said:
... I remember drooling over the Vandersteens! And the inspiration for the purchase of the Alon 1s (center) years later... before my neurosis led me to electrostatics ...
I was able to pull myself away from the brink ... you have it bad ... Maggies? Got pics?

I once got a headache trying to understand how electrostatics work.
 

hideglue

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capnjuan said:
hideglue said:
... I remember drooling over the Vandersteens! And the inspiration for the purchase of the Alon 1s (center) years later... before my neurosis led me to electrostatics ...
I was able to pull myself away from the brink ... you have it bad ... Maggies? Got pics?

I once got a headache trying to understand how electrostatics work.

Not the legendary Magneplanars, but Sound Lab DynaStats (hybrid for the low-end).
And no pictures here at work, so yet another from the web....
1645085.jpg


At the time I would have sold my left (insert any appendage here) for Martin Logan CLS'.
I'm much better now.
 

capnjuan

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idealassets said:
... used Fender Acoustasonic DSP 40 watt per channel stereo amp ... not among the elite electronics that has been covered here so far ... made in Mexico, at least not a rice burner. I like the retro look of the tweed. Does anyone else have any experience or helpful suggestions for this amp?
Hi Craig; don't beat yourself up over the amp ... it's a solution; reasonable tone, lots of built-in features in a manageable package, and at a moderate price. I don't know how easy it is to get the chassis in and out but keeping the controls clean as well as the reverb cable jacks and plugs will save you some nuisance. If you get to where you really like, you might think about new speakers for it; 10"?
 

capnjuan

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hideglue said:
1645085.jpg


Caramba ... those tubes in the amplifiers :shock: :shock:
At the time I would have sold my left (insert any appendage here) for Martin Logan CLS'. I'm much better now.
Yours sounds like a serious case.
 

Jeff Haddad

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Beautiful rigs! I used to have a pair of the small Magnaplanars - best speakers I ever heard!

I definitely feel the spark to get the hifi project started. Add the 3 prong, cap job, and whatever else. I have a small set of Infinity bookshelf speakers I picked up at a guitar show a couple years ago, and I think my old turntable is around somewhere. I'll have to get a CD player. Is it blasphemous to play an iPod through it?

I'll have to start stockpiling wheat pennies...
 

capnjuan

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Jeff Haddad said:
Is it blasphemous to play an iPod through it? I'll have to start stockpiling wheat pennies...
It is in some states ....

Clean the pennies with a #2 pencil's eraser ... better focus in the mids.
 

Jeff Haddad

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Dug it out enough to get a look at it. It's a Fisher X100 (fitting for LTG!). More corrosion on the faceplate than I remember but looks good overall. It looks like this one (stock photo, not mine):

thefisherx100.jpg


I found a manual/schematic CD on eBay for $5 I may get for when I'm ready to tackle the project.
 

idealassets

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capnjuan,
Thanks for the helpful suggestions. I will have to get up to speed on all the maintenance aspects of an amp. Mine will get a workout when used live in a few days. It plays well, and is really too loud for practicing in the house above a volume of "2".

At a recent weekend music fest I noticed a definate lack of any effects being used by the bands, either hard rock, or acoustic. Perhaps this is a good area for a musician to explore, even on an acoustic.

The amp came without the factory footswitch, so I am getting ready to obtain a multi-effect footswitch from Fender. Previuosly when I was on drums, amps didn't matter; either somone just plain sounded good, or not. But now guitar amp knowledge is about to become an avocation for me.

Craig
 

capnjuan

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idealassets said:
... It plays well, and is really too loud for practicing in the house above a volume of "2". At a recent weekend music fest I noticed a definate lack of any effects being used by the bands, either hard rock, or acoustic. Perhaps this is a good area for a musician to explore, even on an acoustic. The amp came without the factory footswitch, so I am getting ready to obtain a multi-effect footswitch from Fender.
Hi Craig: the amp's write-up from Fender's webpage:

"The Acoustasonic™ Junior DSP is ... designed for natural-sounding reproduction of electric-acoustic guitar and vocals. Its two 40-watt power sections (not sure what this means: two 'sections' .. separate amps?) drive two 8” drivers and a high-frequency tweeter; Eq for both channels ... Patented String Dynamics™ control (that's a mouthful right there :wink: ) tames harsh treble notes, and feedback notch control solves most feedback problems ... DSP effects include reverb, delay, chorus, Vibratone ... and optional two-button footswitch that allows effects switching for each channel. "

The amp is similar in features to the (built-by-Roland?) Guild Aspen; twin 8" speakers, full EQ, reverb, chorus and so on. I guess it's what people play that governs the use of effects; it's hard to imagine anybody scratching out Blowin' in the Wind on their small-body acoustic using Chorus but not so hard to imagine the dude providing the entertainment on a Saturday afternoon at the Tiki Hut in Riviera Beach resorting to effects to recapture the audience's attention as he belches out Margaritaville for the 768,934th time .... :

oneband.jpg



Apparently the FS was an option; probably an expensive option ... effects-switching FSs usually have LEDs to tell the player what's 'on'. If I read the description right, there's one switch for each channel. So, depending on how many effects are switchable and since there are a number of effects, the player may need to hit one of the buttons several times to arrive at the desired effect.

The only editorial comment I have about 'acoustic' amps is that their 'quality of life' is inversely proportional to the extent of their features and gadgets. For example, instead of a stand-by switch as found on most tube-driven guitar amps with solid state rectifiers, many of these amps use time-delay relays in the speaker circuit to disconnect them when the power is turned on and, as member beinhard pointed out, the power supply filter caps charge up. The relays protect the speakers from spikes, pops, and noises .......... well ... so would a stand-by switch.

Member jazzdj's Guild Aspen was maybe 16-17 years old when his relays burned up. As it turned out, the relays in the Aspen are, by current industry standards, obsolete and the replacement has a different package size and pinouts ... it wouldn't drop in. So; since somebody thought it was a good idea ... either from an economic or 'design' point of view, to get rid of a stinky old low-tech toggle switch, the lack of a $4 part doomed his amp.

In short, it's okay to like your amp but you may not want to get too attached to it. :( :)

Recent LTG Guild Aspen thread. (pack a lunch ... it's a long thread :wink: )
 

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okay, I'll admit it. I'm an ex-audiophile. There!! I admitted it.

I still have the Martin-Logan reQuests.... Krell KPS-20i cd player, Audio Research Reference One preamp, Z-Systems RDP-1, Llano A-300 monoblocks, Tice Power Block III and more invested in cables than most folks have in a complete system.

The Llano's do have wood feet for de-coupling. ;-)

The really sad thing is? that is just one of 5 systems in the house! Two of those are A/V 5.1 surround sound systems though.

:lol:
 

capnjuan

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DKB said:
okay, I'll admit it. I'm an ex-audiophile. There!! I admitted it.
With 5 systems, please don't get angry if I say I'm not sure you've reached the 'ex' stage yet. :wink:

I didn't find pics of the Llanos ... 700 watts or so :shock: ? But I am convinced that 'boutique' gear produces better mids ... good luck with your obsession!
 

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capnjuan said:
DKB said:
okay, I'll admit it. I'm an ex-audiophile. There!! I admitted it.
With 5 systems, please don't get angry if I say I'm not sure you've reached the 'ex' stage yet. :wink:

I didn't find pics of the Llanos ... 700 watts or so :shock: ? But I am convinced that 'boutique' gear produces better mids ... good luck with your obsession!

well, I think I'm an "ex-" because I haven't bought any true high end gear in 10 yrs. The Llano's were true low production boutique. Yes, mine were 716W per channel from 20Hz-20KHz into 4 ohms, which is the average impedance of the reQuests. I do not run them that hard but the electrostats are a very difficult load for an amplifier to drive and you need an amp with a really good power supply and the ability to handle 2 ohm loads. Someday I may try to find a good used Krell FPB600 as those are incredibly good amps.

I run a PA system in the man-cave. It's a cd player into a Mackie 1604VLZ mixer and out to a Mackie 1801 sub and then to a pair of EV Sx300a's. Then there is the home theater system down there which is a rather blah Denon A/V receiver powering a Boston Acoustics 5.1 set. Then upstairs is the Yamaha A/V receiver driving a NHT 5.1 setup. And last but not least, is the studio setup with Adam A7x's driven from the PC and the RME FireFace 800.
 

capnjuan

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DKB said:
capnjuan said:
DKB said:
okay, I'll admit it. I'm an ex-audiophile. There!! I admitted it.
With 5 systems, please don't get angry if I say I'm not sure you've reached the 'ex' stage yet. :wink: I didn't find pics of the Llanos ... 700 watts or so :shock: ? But I am convinced that 'boutique' gear produces better mids ... good luck with your obsession!
well, I think I'm an "ex-" because I haven't bought any true high end gear in 10 yrs.
'Ex' it is.
 

idealassets

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capnjuan,
The Fender Acoustasonic is like 2 seperate amps at 30,40, or 80 watts per amp, depending on the model that you get. It appears the mostpractical use would be a guitar and vocals at home for recording. When playing live both could be used as a amonitor (if I don't like the house monitors).

I will most likely use this amp for effects, such as chorus when I play a lead. Without another guitar the leads can often sound a bit empty.

I chose this amp due to the availability. There is always one sitting for sale at a pawn or music shop within 20 miles.

I don't know if anyone has had the feeling of lets say, its Saturday night, you have a gig, and suddenly in practice your bass drum foot pedal breaks (or amplifier gives out). Its nice to be able to get one that is universally in use, and readily available so you can still make your gig on time.

-Just a thought.
 

capnjuan

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Jeff Haddad said:
Dug it out enough to get a look at it. It's a Fisher X100 (fitting for LTG!). More corrosion on the faceplate than I remember but looks good overall. It looks like this one (stock photo, not mine):
Hi Jeff: I looked all over for the X100 schematic ... found one for the X100A and later versions. Some good discussion in this AudioKarma thread about the X100/A/B/C series. I don't know how much signal strength the iPod puts out and whether it's strong enough to drive the line stage but it would be pretty cool if it did.
 

capnjuan

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idealassets said:
... It appears the most practical use would be a guitar and vocals at home for recording ... Its nice to be able to get one that is universally in use, and readily available so you can still make your gig on time.
Hi Craig; I agree with your assessment - good for home instrument and voice recording and as a grab-and-go amplifier. Fender sold a ton of them; there has to be a lot to like there. :)
 

idealassets

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Friends & fellow LTG'ers. Now the ticket will be to obtain a Fender tweed "Blues Deville" for electric guitar & Fender tweed "Bassman" for bass. I'll take black also, but like the tweed.

If I can find them for a decent buy price, we'll see if I can get them. These are all sold widely, however in my area of norther MI I have'nt seen many of these in use.

It appears the majority of players are either in a loud rock/blues mode, or a placid "unplugged" mode. I am setting out to find a nitch in between.

Thank you,
craig
 
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