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FAQ'S
What kind of on/off switches do you recommend?
What's the best way to do a power on/off light?
Are there any special or student discounts?
What pot do you recommend for volume control?
What guarantees come with Aspen Amps products?
If the Aspen Amps products are so good and so simple to build, why don't
you yourself manufacture them, even on a small scale?
Is it possible to buy PCB's alone, without components, since I have
ready access to most of the parts locally to me?
How difficult will I find the actual construction process, I wonder?
Why is the AKSA so good?
Is the AKSA design mature?
Does the kitset include the schematic for the entire circuit frompower
supply to speaker? Is this schematic easy to read and understand?
Can the power supply be built in the same box as the two amps?
What heatsink is supplied?
What size in inches is the heat sink? Since I intend to build these
on separate chassis, are there two smaller heatsinks I could get from
you?
Can I use six channels of the AKSA for a home theatre system?
I would like to use the AKSA as the bass amplifier in a tri-amped, active
crossover. What are my options?
How does the AKSA perform in bridge mode? What output can you expect?
How has the gain of the AKSA been set?
How is output stage bias level set in the AKSA?
Can the AKSA modules work with a mix of speaker driver impedances, in
my intended active crossover driven system?
Is this amp ever in Class A, and for how many Watts?
How many stages are there in the AKSA topology and are they direct coupled?
Which output transistors do you use in the AKSA?
What is the output impedance of the 100W AKSA, and what is the effect
of damping factor on bass?
Would the Onsemi MJL3281A and MJL1302A be a drop in match, to replace
a Toshiba 2SC3281/2SA1302 original pair?
What resistor type changes would peak the AKSA’s performance?
I want to try changing the feedback capacitor, C2, to a polypropylene.
Does the value need to remain the same?
C1 according to your "cut down instructions" on your website
is a 10É F. The value is changed to 0.47É F?
Would it offer a small sonic improvement to change the Evox Rifa 470nF
MMK capacitor on the input to a metallised polypropylene capacitor, such
as the Arco or Musicap brand?
You mention possible component upgrades but note that the improvements
are subtle and pricey. What are these component changes? Is there a 'premium
parts upgrade'? I’m looking for the 'edge'.
I read the Douglas Self "Distortion In Power Amplifiers".
How do you regard Doug’s analysis and approach?
What is the TLP?
Does the TLP have any voltage gain?
Why would you ever use a unity gain tube stage between a CD/DVD player
and a power amp?
Can the TLP drive long cables without sonic penalty?
How big is the TLP, and where can I mount it?
What sort of power supply is required for the TLP?
What benefits does the Nirvana upgrade bring to the TLP?
Is the TLP a genuine two channel, stereo design?
Can I get replacements of the tube?
How difficult is the TLP to make?
Presently we are working on an update to the AKSONICS speakers which
will be released in the next three months. This will enable present owners
to take this brilliant, innovative design to levels of sonic presentation
which surpass many speakers in the $US3000 and up category. Watch this
space!!
What sort of power supply is recommended for the AKSA?
Why do you recommend UG10DCT, BYQ28E or SBYV28-200 diodes for the power
supply?
I will have separate rectifiers for each channel, but can I use just one
transformer?
Will my 28-0-28 transformer produce too high a rail voltage for the AKSA?
Could you help me understand the trade-offs regarding transformers?
I am going to use two 300VA Plitron transformers. Are these too
large?
How would improving power supply regulation by using say 300VA toroidal
transformers and larger filtering capacitors suit the AKSA?
What brands of power supply filter capacitors do you recommend?
I'm trying to decide between two approaches to the power supply. Which
is best?
In your power supply instructions, you state that C1 must be "X2".
What does "X2" mean? What brand do you recommend for that?
The 100 Ohm resistor in series with C1 in the power supply, should have
what Wattage rating, and what tolerance?
I have some air-cored chokes that could be used in a pi filter. Could
they be used with perhaps a couple of high quality 1,000u F capacitors
to any benefit?
Do you have any hum issues with the AKSA?
Could I use circuit breakers instead of fuses for the power supply?
Can the power supply be built in the same box as the two amps?
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