| Question from eBay member on 12 February 2006 =
IS THIS YOUR AUCTION 5865913747 ?
|
| Answer = No, it is fake. It has NOT been modified by us. |
The seller has 0 feedback.
If you want to buy expensive items from sellers with 0 feedback, that
is your choice. |
| We have listed the ORIGINAL CHINESE VERSION at GBP £500. |
| The MODIFIED IN ENGLAND version is GBP £1150. |
|
Affordable Valve Company
High End "EL34 Triode Connection"
Lim Aik Leong Signature
EASILY beat GBP £3,000 valve amplifiers or MONEY
BACK ( less GBP £60 or £30, within 30 days )
WARNING =
Beware of '"amplifier wreckers" in Internet Forums.
"Amplifier wreckers" are dealers in Internet Forums (disguised as innocent
members of the public)
asking you to replace our BEST RELIABLE valves
(with 1 year guarantee for the basic GBP £250 model and 2 years
guarantee for the more expensive models)
with their 'not so reliable' valves (with a disappointing 90 days guarantee.) |
How can these dealers claim their their valves are better when
our BEST RELIABLE valves are guaranteed for 4 times or 8 times longer
than their 'not so reliable' valves. |
NO MONEY REFUNDED, NO REPAIRS UNDER GUARANTEE IF YOU BREAK THE 'ANTI
TAMPER' SEAL
ON THE SAFETY CAGE. |
|
Will your valve / tube amplifier
drive
"difficult' Electrostatic speakers
?
Question from eBay member on 13 October 2005 about our GBP £250
VR-70E valve
amplifier = ................. Also, has this amp been
tried with Quad ESL 57's? Thanks. |
Answer = ALL of our valve amplifiers works well with our Quad
ESL 57
(one of our many speakers bought for Research and Development.) |
We sell audio equipment on a 1 month home trial basis,
so I would ask customers to have
REASONABLE EXPECTATION that our valve amplifiers will perform a MINOR
MIRACLE,
but our amplifier cannot change the Laws of Physics. |
The Laws of Physic that tells us that,
if we want bass down to 20 Hertz,
we need an electrostatic panel that is 14 feet by 14 feet
(which is one quarter wavelength of 56 feet long 20 Hertz sound wave.) |
Our 3 feet Quad ESL 57 are far too small.
You will get SLIGHTLY more bass from our valve amplifier with LARGISH
output transformer,
but ......... |
The bass from our eBay listing of our GBP £800 High End speakers
with 10 inch woofer in a HUGE box
is 100 times better than our Quad ESL 57. |
|
The Laws of Physic tell us that
you need TINY 1 inch tweeter to get up to 20 kilohertz with good dispersion
/ polar response.
The HUGE 2 feet tall midrange / treble unit is is much too big for
treble,
and treble falls off around 10 kiloHertz
(unless you are a reviewer who received a specially selected reviewer's
sample.
Please read old copy of Studio Sound magazine) |
The Laws of Physic tell us that
you need TINY 1 inch tweeter to get up to 20 kilohertz with good dispersion
/ polar response.
The HUGE 2 feet tall midrange / treble unit is is much too big for
treble,
and treble falls off around 10 kiloHertz
(unless you are a reviewer who received a specially selected sample.
Please read old copy of Studio Sound magazine) |
Cymbals disappear into the background, and you can barely hear the
cymbals.
I do not want harsh treble, but I do want the CORRECT AMOUNT (HIgh
FIdelity) of treble. |
NO AMPLIFIER WITH A FLAT FREQUENCY RESPONSE
AND A GOOD SQUARE WAVE RESPONSE CAN CORRECT THIS PROBLEM. |
The treble from our eBay listing of our GBP £800 High End speakers
with
1 and half inch tweeter is 10 times better than our Quad ESL 57. |
The treble from our eBay listing of our GBP £2900 High End speakers
with
1 and half inch tweeter + 8 millimetres wide RIBBON SUPER TWEETER
is 100 times better than our Quad ESL 57. |
|
|
Please consider the difference between |
| 1. The treble is NOT irritating, because there is NO treble |
|
versus |
2. The treble is NOT irritating, because the frequency response is
ruler flat,
no huge resonance peaks, good dispersion / polar response,
good water fall curves (cumulative spectral decay) showing rapid
decay of treble,
without any lingering resonances. |
|
Will your valve / tube amplifier
drive
5 inch speakers ?
Question from eBay member on 19 November 2005 = I realise you
have your own speakers
for sale, but wondered of others, which you are able to say would work
well with the VR-70E?
Newer ones like Quad 11L Older ones Rogers? Thanks for any opinions! |
| Answer = Thank you for your interest in our amplifiers. |
| I apologise for being blunt. |
There has been so much Hi Fi magazine hype about small speakers,
that you will misunderstand what I write,
if I tried to be overly polite, and beat around the bush |
|
SMALL 5 inch speaker are
TOO SMALL to imitate / reproduce HUGE 22 inch kick bass drum or HUGE
32 inch timpani
EVEN IF YOU USE 500 WATTS TRANSISTOR AMPLIFIERS |
|
SMALL 5 inch speaker are
TOO SMALL to fill 20 feet room with loud music or loud deep bass,
EVEN IF YOU USE 500 WATTS TRANSISTOR AMPLIFIERS |
|
5 inch speakers (3% efficiency) have to MOVE A MASSIVE 57 MILLIMETRES
FOR 7 WATTS of 30 Hertz bass from the amplifier.
( Page 834 of F Langford-Smith Radio Designer's Handbook latest
edition )
|
Our LARGE OUTPUT TRANSFORMERS can easily produce 7 watts at 30 Hertz.
Many competitors cannot. |
5 inch, 6 inch and 8 inch speaker will typically move + - 3 millimetres
before distorting VERY BADLY.
DOMESTIC SPEAKERS CANNOT MOVE 57 MILLIMETRES
and CANNOT COPE WITH 7 WATTS OF 30 HERTZ BASS. |
Please ignore the silly absurd claims that
speaker can move by 12 millimetres (if you prod the cone with your
finger !) |
|
|
If you try to force 5 inch cones to produce 30 hertz,
you will hear HUGE AMOUNT OF HARMONIC DISTORTION
at 60 Hertz, 90 Hertz, 120 Hertz, etc. , with a tiny bit
of 30 Hertz |
|
|
OUR AMPLIFIERS WILL WORK FINE WITH 5 INCH SPEAKERS (like Quad 11L)
and old Roger speakers (5 inch to 8 inch) just as long as you keep
the volume down,
BECAUSE THE SMALL SPEAKERS CANNOT COPE WITH 7 WATTS OF BASS POWER |
| Our amplifiers will work fine with old Rogers speakers. |
Old Rogers speakers usually use plastic cones, like Bextrene,
which will hide TINY MICROSCOPIC details. |
When there is a TINY sound,
the plastic NEAR THE VOICE COIL compresses and bends,
so the cone do NOT move,
so there is NEGLIGIBLE sound. |
WELL DESIGNED coated paper cones have much less of this problem
and will reveal MUCH MORE TINY DETAILS. |
|
Will your valve / tube amplifier
drive
2 pieces of 6 inch speakers + tweeter
|
|
Question from eBay member on 1 January 2006 about 2 SILVER MICA
+ Audio Institute VR-110 valve amplifier
(eBay item 5848618286) = Hello how well will these work with Epos
M22s? |
| Answer = Thank you for your interest in our amplifier. |
MONEY BACK GUARANTEE (less GBP £60 or £30, within
30 days) that
most people (with standard taste) ,
except for Hi Fi reviewers (with non standard taste) ,
except for dealers in Internet Forum (disguised as innocent members
of the public) that
our valve / tube amplifiers can produce
much sweeter treble, less irritating treble,
less sibilance (when a woman say 'his' , it sound like
'hissssssk'),
MUCH MORE OBVIOUS regional accent of the singer,
MUCH MORE OBVIOUS accentuation of words by the singer,
MUCH MORE REALISTIC human voices
(the most important
sound on a CD of your favourite singer is the voice of the favourite singer),
usually SLIGHTLY better bass (unbelievable, until you
look at the size of our HUGE POWERFUL TRANSFORMER),
LARGER DYNAMIC RANGE (unbelievable, until you look
at the size of HUGE POWERFUL TRANSFORMERS working together
with the ink black silent of class A amplifier) ,
inky black silence between the musical notes ,
makes you want to listen to the next CD , and the next
CD and the next CD and the next . |
|
|
Any of our amplifier will work well with any WELL
DESIGNED speakers,
and you will be shocked at the improvement, but ..... |
I appreciate that the speakers retail for GBP £950,
but there is no such thing as a 100% perfect speaker
and ALL speakers have limitations,
that no amplifier (valve or transistor) can fix. |
| I have listed 4 main limitations below. |
|
|
You have to take the HUGE power handling capacity
CLAIMED by loudspeaker manufacturer, with a large pinch of salt ! |
I am concerned that
our 40 watts + 40 watts valve amplifier might be too
powerful for your GBP £950 speakers,
because your GBP 950 speakers does NOT seem to have features
to help it handle power. |
Your GBP 950 speakers might be better off with
our lower powered 20 watts + 20 watts" Triode connection" valve amplifiers
( eBay listings from GBP £408 to GBP £1,400 ) |
|
|
No amplifier (valve or transistor) can make SMALL 6 inch speakers imitate
/ reproduce
HUGE 22 inch kick bass drums or HUGE 32 inch Kettle drums or HUGE 32
feet organ pipes,
Our eBay listings for GBP £200 to GBP £2,900 speakers
has BIGGER , MORE POWERFUL 10 inch or 12 inch speakers. |
No amplifier (valve or transistor) can make SMALL 6 inch speakers
fill HUGE 20 feet room with LOUD MUSIC (unless you sit 6 feet from
the speakers) |
|
|
| I downloaded the instruction manual for your speakers. |
Your GBP £950 speakers are "2.5 Way" speakers,
(the bass come out of both the six inch speakers)
and not a "3 Way" speaker, as described in many websites. |
HUGE 22 inch kick bass drums or HUGE 32 inch kettle drums
will EASILY overload the SMALL 6 inch speakers. |
If you have a human voice,
when the SMALL six inch speakers are overloaded,
the human voice will be blurred, muddled, congested (like a person
with a blocked up nose) |
WELL-DESIGNED (that need not be expensive) "3 way" speakers
with second-order (12 dB per octave) or steeper cross over
and "notch filter tuned to the system frequency of the midrange"
or "L Pad turned down" or .......
will keep the bass out of the SMALL six inch (or smaller) mid range
speaker,
so the SMALL six inch (or smaller) mid range speakers are NOT overloaded
by loud bass notes,
and human voices should remain crystal clear, without harshness.
Please see our eBay listings for
GBP £650 to GBP £2,900 WELL-DESIGNED "3 way" speakers ) |
|
|
|
Your GBP 950 speakers have a 6 dB per octave crossover for the tweeter.
The graph on page 254 in Mr Martin Colloms excellent book
'High Performance Loudspeakers' 5th edition explains
why a simple one capacitor 6 dB per octave crossover can cause problem.
It also explain how to use notch filter and zobel network to solve
the problem. |
|
Speakers with second-order (12 dB per octave) or steeper cross over
and "notch filter tuned to the resonance frequency of the tweeter"
or "L Pad turned down"
will keep one kilohertz (typical resonance frequency of tweeters)
out of TINY 1 inch tweeters
so TINY 1 inch tweeters are NOT overloaded by loud mid range,
and tweeters should be able to go louder, without becoming harsh.
Please see our eBay listings for GBP £650 to GBP £2,900
speakers,
with "British notch filter tuned to the resonance frequency of the
tweeter" |
|
Limitations of Ferro Fluid
|
When you turn up the volume,
the voice coil and ferro fluid (thick viscous oil + iron filings)
will get hot,
the ferro fluid (thick viscous oil + iron filings) will become thin
and runny,
the dampening effect reduces,
and the impedance peak (might be 20 ohms) at the resonance frequency
reappears. |
So, the 8 ohm crossover does not work very well,
allows the midrange to reach the tweeter,
and overload the tweeter,
and the tweeter becomes harsh. |
|
|
|
Will your valve / tube amplifier
drive
15 inch speakers + horn loaded
tweeter
( There is isn't a medium size speaker to produce human voices )
|
|
Question from Latvia on 5 January 2006 =
Thank you for reply. I am afraid that there is no much sense to
buy just
an amplifier without proper speakers. So I must think of something
about
speakers. I know that the prices are quite high, but how much it
could
be? Maybe it’s worth to consider. Could you please find out? |
I have a possibility to get a pair of ..... loudspeaker with 15
inch + horn loaded tweeter .......
or a pair of ... loudspeaker with 15 inch speaker + horn loaded
tweeter ...........
Are these good speakers for your amplifiers? |
|
| Answer = I apologise for the high price of sending big speakers
to Latvia. |
When I send heavy items to Western Europe, my courier will offer me
2 different services.
'VERY EXPENSIVE and very quick courier service' or
'MUCH CHEAPER but slow (only takes a few days) courier service'. |
| I usually use the slow and reliable service to save a lot of money
to send heavy items to Western Europe. |
Unfortunately, my courier do NOT offer a cheap slow service to
Latvia,
so I have the use the VERY EXPENSIVE fast service. |
The VERY EXPENSIVE fast service to Latvia is a crazy GBP 531.28
because the speakers and cardboard boxes weigh a total of 108 kilogram. |
I apologise for the weight,
but all SERIOUS loudspeaker with EXCELLENT BASS are big and heavy. |
It is impossible to make a SMALL 6 inch speaker imitate / reproduce
HUGE 22 inch kick bass drums or HUGE 32 inch timpani. |
|
|
Our amplifier will work well with these speakers, but ......
These are very old designs, from 30 or 40 years ago.
30 or 40 years ago, there were amongst the best speakers in the world.
But things have changed a lot in 40 years. |
| It is true that the 15 inch speaker will give you very good bass, but
........ |
|
The most important sound on the CD of your favourite singer
is the voice of your favourite singer. |
Most audio engineer will agree that
the best way of imitating / reproducing the voice the of your favourite
singer
is to use 3 inch dome or or 4 inch speaker or 5 inch speakers or 6
inch speakers. |
Most audio engineer will agree that 10 inch or 12 inch or 15 inch speakers
are too big to imitate / reproduce the voice the of your favourite
singer.
YOU MUST LISTEN TO HUMAN VOICES ON THESE SPEAKERS,
AND ASK YOURSELF A QUESTION ,"Is my favourite singer in the same room
?" |
So, our eBay listing of our GBP 650 or GBP 850 speakers,
with 10 inch woofer + 6 inch midrange will produce much more realistic
human voices.
The bass of these 10 inch speakers is very good. |
Our eBay listing of ULTRA HIGH END GBP £450 speakers
+ any of our cheapest valve amplifier will EASILY trick you into believing
that
your favourite singer is in your room for most 'live recording'
and about 30% to 50% of studio recording (or your money refunded)
But, these are small speakers,
and it is useless comparing the bass of SMALL speakers versus BIG speakers.
BIG WELL DESIGNED (that need not be expensive) speakers will always
win for bass ! |
|
|
The second problem is that
many modern Hi Fi Enthusiast insist that
treble must go up to 20,000 cycles per second (Hertz) |
'DVD Audio' enthusiasts even want
the treble to up to 40,000 cycles a second (Hertz) |
| The 2 inch dome tweeter is horn loaded, and does NOT reach 20 kiloHertz. |
Our GBP £2,900 speakers with
modern 1.5 inch domes midrange (WITHOUT HORN, no horn resonance, so
better)
+ RIBBON SUPER TWEETER
will be much better. |
Our GBP £450 speakers with ULTRA HIGH END 1 inch dome tweeter
will be much better (but cannot go as loud as the horn loaded tweeter).
(as you probably realize, it is very difficult to make a 100% perfect
speaker.) |
So, what I am saying is excellent bass,
but "no so good" midrange (for human voices)
and "no so good" treble (for cymbals) |
I am sorry that I am so fussy about loudspeaker.
I was so fed up with the loudspeaker sold in shops,
that is why I am selling my own brand of speakers.
Many people sell their own brand of speakers,
but I probably have better technical knowledge
and 'golden ears' ! |
|
|
You also have to be careful that
the loudspeaker manufacturer made some of these 15 inch speakers
using foam for a 'cone surround'. |
The foam only last a few years,
so the foam 'cone surround' would be broken (perished) by now.
If the 'cone surround' has been replace,
please make sure there are receipts from a professional repair man. |
|
Speakers with 3 pieces of 6
inch speakers
| Question from eBay member on 31 January 2006 = I wonder if you could
advise. This amp can, I understand, power Monitor Audio Studio 20SE speakers
very well. However can it drive the larger Studio 50s? These have three
6.5 inch drivers and the technical spec says they need an amp producing
35–300 watts. It seems to me though that the power output of valve amps
does not relate very clearly to the ratings for non-valve amps. Your answer
will be much appreciated. Thanks |
Answer = All of our PUSH PULL amplifiers have BIG or HUGE output
transformers
and will EASILY drive the Monitor Audio Studio 50 loudspeakers.. |
The loudest sounds on your CD or record are usually the bass drums
or bass instruments.
How well will your speaker cope with LOUD DEEP bass ? |
Although the Monitor Audio Studio 50 has 3 pieces of six inches speakers,
one of the 6 inch speakers rolls off below 120 hertz, and is 10 decibels
down at 40 hertz. |
When we are talking about deep bass around 40 or 50 hertz,
only 2 of the 6 inch speakers are doing most of the work. |
|
|
| 2 pieces of 6 inch speakers are NOT as big as 1 piece of 12 inch speakers. |
| 2 pieces of 6 inch speakers (stacked vertically) are as TALL as 1 piece
of 12 inch speaker. |
| However, 1 piece of 12 inch speaker is TWICE AS WIDE as 2 pieces of
6 inch speakers (stacked vertically). |
1 PIECE OF 12 INCH SPEAKER IS AS BIG AS 4 PIECES OF 6.5 INCH SPEAKERS
(when you calculate the moving area, without the 'useless' metal frame
or part of the 'useless' cone surround.) |
2 PIECE OF 6 INCH SPEAKER ARE SLIGHTLY BIGGER THAN
1 PIECE OF 8 INCH SPEAKERS
(when you calculate the moving area, without the 'useless' metal frame
or part of the 'useless' cone surround.) |
|
|
2 pieces of SMALL 6 inch drive
units
(which is slightly bigger than
1 piece of old fashioned 8 inch speaker)
are TOO SMALL to imitate / reproduce
HUGE 22 inch kick bass drum or
HUGE 32 inch kettle drums or HUGE 32 feet organ pipes
EVEN IF YOU USE 500 WATTS TRANSISTOR
AMPLIFIER. |
2 pieces of SMALL 6 inch speakers
(which is slightly bigger than
1 piece of old fashioned 8 inch speaker)
are too small to fill 20 feet room
with LOUD DEEP BASS,
EVEN IF YOU USE 500 WATTS TRANSISTOR
AMPLIFIER. |
Please do NOT believe the nonsensical hype that the 'typical' modern
6 inch speaker
can handle huge amount of BASS power.
The 'typical' modern 6 inch speaker can only move forward and backwards
by + - 3 millimetres.
The 'typical' old fashioned eight inch speaker (e.g. Kef B200 which
are made by the thousands)
can also move forward and backwards by + - 3 millimetres.
The progress in 40 years is extremely
disappointing !
Since the old fashioned 8 inch speaker is ALMOST TWICE THE SIZE of
the modern 6 inch speakers,
the typical old fashioned 'high end' 8 inch speakers are MUCH MORE
POWERFUL than the typical modern 6 inch speakers.
Some of our speakers uses ULTRA HIGH END modern EUROPEAN 6 inch speakers
that can move forward and backwards by more than + - 5 millimetres,
and should be as powerful as old fashioned 'HIGH END' 8 inch speakers
that can only move forward and backward by 3 millimetres. |
Unless the manufacturer is boosting about
how many millimetres their 6 inch speakers can move forward and backwards,
it is unlikely to be much better than the 'typical' + - 3 millimetres. |
Please be warned that some manufacturers likes to confuse the issue,
by quoting 6 millimetres instead of + - 3 millimetres. |
|
|
|
|
| According to a review, the 2 pieces of six inch woofers are in a sealed
cabinet, and has well dampen bass. |
However, there is a 3 decibels peak at 65 hertz,
followed IMMEDIATELY (very unusual) by 12 decibels per octave roll
off. |
I would have preferred larger magnets or larger cabinets,
which should dampen / remove the 3 decibels resonance peak at 65 hertz,
with a much more gentle bass roll off (much less than 12 decibels per
octave) around 40 hertz to 65 hertz. |
Our ULTRA HIGH END Yamaha NS-1000M studio monitor has
12 inch woofers with HUGE magnets in a HUGE sealed cabinet.
There are NO resonant peak around 65 hertz.
The frequency response falls away VERY VERY GENTLY,
and does not reach the 12 decibels per octave roll off for quite sometime.
This indicate an 'over dampen' bass, produced by the HUGE magnet and
HUGE sealed cabinet. |
Needless to say, the bass of our Yamaha NS-1000M 12 inch speakers
will be TOTALLY DIFFERENT
to the bass of the smaller 6 inch speakers. |
|
|
| According to a review, the review sample of the Studio 50 had the tweeters
connected the wrong way around. |
This created a 10 decibels dip in the frequency response around 2000
hertz.
This is very audible, and you should check if the tweeters at connected
the right way around or not. |
The cross over will alter the phase,
and you MIGHT have to connected the tweeter THE WRONG WAY AROUND to
get the correct results ! |
To make matters more complicated, sometimes, some manufacturers of
drive units make mistakes,
and mark the polarity of the connections WRONGLY. |
THAT IS WHY WE MEASURE THE FREQUENCY RESPONSE
OF OUR 'MODIFIED IN ENGLAND (BEWARE OF FAKES)' SPEAKERS.
That takes time and expensive equipment,
and that is another reason why our modified in England speakers are
so expensive. |
|
|
It is very difficult to control 6.5 inch metal, Kevlar, carbon fibre,
glass fibre
cone break up / resonance / peaks
in the frequency response around 5000 hertz to 8000 hertz. |
Measurements in the review showed that the 6 1/2 inch metal cone has
about 10 decibels peak (which should be audible) around 5500 hertz. |
| Obviously, no amplifier in the world (not even our marvellous amplifiers)
can cure this problem. |
However, our MODIFIED IN ENGLAND (BEWARE OF FAKES) valve amplifiers
have been designed NOT to aggravate
our ultrahigh end 3.5 inch EXOTIC BERYLLIUM METAL DOME MID RANGE
+ ultrahigh end one inch EXOTIC BERYLLIUM METAL DOME TWEETER
(BERYLLIUM METAL DOMES are seldom seen in speakers below GBP £10,000),
and it should help to reduce any problems that you might hear like
sibilance (when a woman say 'hiss', it sounds like 'hissssssk').
Some people do NOT notice how irritating sibilance is.
If you find sibilance irritating, BUY OUR AMPLIFIER ON A 1 MONTH HOME
TRIAL ! |
Money back guarantee (less GBP £30 + GBP £30 shipping cost,
restocking fee etc) that
our MODIFIED IN ENGLAND (BEWARE OF FAKES) valve amplifier will GREATLY
reduce and control sibilance
(when a woman say his, it sounds like hissssssk)
and reduce slightly bright tone caused by the 6.5 inch mid range 10
decibels peak around 5500 hertz. |
|
|
Your tweeter has a 15 decibels peak around ultrasonic 27,000 hertz.
Some DVD audio enthusiast claims that ultrasonic frequency affect the
sound quality,
and they want a 'flat frequency response' to 40,0000 Hertz. |
| The output of your tweeter falls off after 10,000 hertz and is about
3 decibels down at 20,000 hertz. |
I expect the loss in high frequency will tame the harshness
of some bright (too much treble) CD player + some bright (too much
treble) transistor amplifier. |
But, it is very difficult to predict how any amplifier will sound with
your tweeter
(which does not have a flat frequency response),
so you will have to find out for yourself with our one-month home trial. |
|
|
The review sample had
3 decibels peak (which should be audible) at 65 hertz
+ 10 decibels peak (which should be audible) at 5500 hertz for the
6 inch metal cone
+ about 15 decibels peak at an ultrasonic 27,000 hertz (which might
or might not be audible. Some DVD audio enthusiast are suggesting
that speakers should have a flat frequency response to 40,000 hertz.)
+ treble falling off after 10,000 hertz (which should be audible)
+ treble is about 3 decibels down at 20,000 hertz (which should be
audible)
+ the tweeter was connected in such a way
to give a 10 decibels dip in the frequency response
around 2000 hertz (which should be audible)
Please check that your tweeter is connected correctly. |
I appreciate that your British loudspeaker are VERY expensive,
and has received rave review, even though there seems to be a number
of problems. |
Please could you keep an open mind and auditioned our eBay listing
for
hilariously priced GBP £650 MODIFIED IN ENGLAND BY AFFORDABLE
VALVE COMPANY speakers
with 10 inch woofers (about three times the size of six inch speakers)
+ five inch or six inch sophisticated coated paper cones, with lossy
rubbery roll surrounds
+ tweeter with BRITISH NOTCH FILTER TUNED TO THE RESONANT FREQUENCY
OF THE TWEETER (allows the tweeter to go much louder, without overloading,
without becoming harsh). |
I have to apologise that the plastic finish is NOT beauty contest material,
but if you have a limited budget,
it would been better to NOT to waste your limited budget
on EXPENSIVE wood veneer or EXPENSIVE piano finish. |
But I do NOT have to make any excuses for the EXCELLENT ULTRA HIGH
END SOUND,
with superb powerful bass slam, 100% boom free,
superb midrange that tricks you into believing that your favorite singer
is in your room
(when using our eBay listing for our Modified in England Triode Connection
amplifier. BEWARE OF FAKES)
and sweet treble, that is NOT harsh, even at very loud volume,
of our GBP £650 speakers. |
|
Question from eBay member in March 2007 =
What specific speaker impedances do your amplifier designs typically
cater for?
Do you offer taps on the output transformer at say 4, 8 and 15 ohms? |
Answer = All of our valve amplifiers have
loudspeaker connections for 4 ohms and 8 ohms speaker,
and
will EASILY EASILY EASILY drive 3 ohms , 4 ohms , 6 ohms , 8 ohms
,
10 ohms , 12 ohms , 15 ohms , 20 ohms speaker
with better drive and SLIGHTLY BETTER BASS than most transistor
amplifier
or MONEY REFUNDED (less shipping cost. equipment returned during
1 month home trial.) |
Please do NOT get too worried
about impedance of loudspeaker,
because most loudspeaker manufacturers
do NOT care about impedance !
|
You will find modern speaker
that CLAIMS to be '8 ohms'
with resistance / impedance that
fluctuate wildly from 3 ohms to
20 ohms (at different frequency) !
|
If you are trying to match
the resistance / impedance accurately,
you are wasting your time.
|
|
|
Ignoring a few silly speaker design with silly absurd 1 ohm impedance,
speaker impedance is irrelevant
for our SERIOUS MODERN valve amplifiers with HUGE output transformers |
'Push Pull' operation (much much much better bass than most 'Single
ended' valve amplifiers)
+ Triode Connection (can give better bass than 'ultra linear' connection,
depending on PERSONAL TASTE)
+ SIZE OF THE OUTPUT TRANSFORMERS
+ FIXED BIAS (superior to 'automatic bias')
+ a bit of negative feedback
are much more important ! |
If you look at figure 7 at
http://www.stereophile.com/integratedamps/205prima/index3.html
you will find that our competitor valve amplifier
that claims to produce 35 watts
can only produce
about 3 watt at 2 percent distortion into 8 ohms for 20 hertz bass
note.
( about 3 watts = 5 volts times 5 volts divided by 8 ohms )
so, our competitors amplifier will struggle to drive
the 'LOUD bass line' of big powerful speaker,
EVEN IF YOU MATCH THE IMPEDANCE PERFECTLY ! |
JUST COMPARE THE SIZE OF OUR COMPETITORS OUTPUT TRANSFORMER
WITH OUR HUGE OUTPUT TRANSFORMER.
THAT IS MUCH MORE IMPORTANT THAN MATCHING IMPEDANCE
(in most sane cases, ignore some bizarre absurd cases, that seldom
happens in real life.) |
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Before anybody tell me about the nonsensical Hi
Fi Myth
that British valve amplifiers are better ..................
Ha , Ha , very funny !
Many British amplifiers are even worse !
|
Like the VERY expensive British monoblocks
that had a 'Recommended Award' in Hi Fi Choice magazines,
that claims to produce 7.5 watt stereo power amplifier (?maybe 15 watts?
monoblocks)
selling for an astonishing GBP £1999 (which was a huge amount
of money in 1988)
produces 4 watts in the midrange,
and about HALF A WATT , 0.66 watts (or 0,66 watts to our European customers)
at 20 Hertz into 8 ohms.
and about QUARTER OF A WATT , 0.22 watts (or 0,66 watts to our European
customers)
at 20 Hertz into 4 ohms.
(More details on Page 109 of Hi Fi Choice October 1988) |
This VERY EXPENSIVE British valve monoblock (or cheaper valve power
amplifier)
is NOT going to drive the 'LOUD bass line' of ANY speaker
(ignoring horn speaker with HUGE 37 foot mouth,
and not the typical
TINY inadequate 1 foot mouth)
EVEN IF YOU MATCH THE IMPEDANCE PERFECTLY ! |
JUST COMPARE THE SIZE OF OUR COMPETITORS OUTPUT TRANSFORMER
WITH OUR HUGE OUTPUT TRANSFORMER.
THAT IS MUCH MORE IMPORTANT THAN MATCHING IMPEDANCE
(in most sane cases, ignore some bizarre absurd cases, that seldom
happens in real life.) |
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How about the 'Best Buy' award in Hi Fi Choice magazine.
This British valve amplifier produces about 7 to 8 watts in the midrange,
but
only a bit more than 1 watt, 1.34 watts (or 1,34 watts to our European
customers)
at 20 Hertz into 8 ohms
only a bit more than 3 watt, 3.2 watts (or 3,2 watts to our European
customers)
at 20 Hertz into 4 ohms
(More details on Page 107 of Hi Fi Choice October 1988) |
This 'Best Buy award' British valve amplifier
is NOT going to drive the 'LOUD bass line' of ANY speaker
(ignoring horn speaker with HUGE 37 foot mouth,
and not the typical TINY inadequate 1 foot mouth)
EVEN IF YOU MATCH THE IMPEDANCE PERFECTLY ! |
JUST COMPARE THE SIZE OF OUR COMPETITORS OUTPUT TRANSFORMER
WITH OUR HUGE OUTPUT TRANSFORMER.
THAT IS MUCH MORE IMPORTANT THAN MATCHING IMPEDANCE
(in most sane cases, ignore some bizarre absurd cases, that seldom
happens in real life.) |
|
|
How about the ANOTHER 'Best Buy' award in Hi Fi Choice magazine.
This British valve amplifier produces about 9 to 10 watts in the midrange,
but produces
only half a watt, 0.5 watt (or 0,5 watt to our European customers)
at 20 Hertz into 8 ohms
less than half a watt, 0.4 watts (or 0,4 watts to our European customers)
at 20 Hertz into 4 ohms
(More details on Page 105 of Hi Fi Choice October 1988) |
This 'Best Buy award' British valve amplifier
is NOT going to drive the 'LOUD bass line' of ANY speaker
(ignoring horn speaker with HUGE 37 foot mouth,
and not the
typical TINY inadequate 1 foot mouth)
EVEN IF YOU MATCH THE IMPEDANCE PERFECTLY ! |
JUST COMPARE THE SIZE OF OUR COMPETITORS OUTPUT TRANSFORMER
WITH OUR HUGE OUTPUT TRANSFORMER.
THAT IS MUCH MORE IMPORTANT THAN MATCHING IMPEDANCE
(in most sane cases, ignore some bizarre absurd cases, that seldom
happens in real life.) |
|
|
You mentioned 15 ohms speaker.
Probably the only 15 ohms speaker that is SLIGHTLY / VAGUELY
?popular? nowadays
is the '15 ohm' version of the BBC designed LS3/5a |
| Before anybody spread nonsensical Hi Fi Myths about 15 ohms speaker
........ |
ALL of our valve amplifiers is TOO POWERFUL for the TINY 5 inch drive
units of the LS3/5a
( regardless of whether it is 15 ohms or not ! )
Many years ago Hi Fi Choice dared NOT take a frequency response curve
of the BBC designed LS3/5a at
96 dB (which is about 4 watts to 8 watts into a modern speaker ),
because they were worried that it will overload / damage the TINY 5
inch drive units
of the BBC designed LS3/5a. |
Please remember that BBC designed the LS3/5a as a
'Grade 2 monitor' for a mobile recording van.
Meaning. it is designed to check human voices
(e.g. for ancient broadcast of football matches, horse races, etc )
in a SMALL mobile recording van (and NOT a 20 foot room). |
It is NOT designed for 20 foot rooms.
'Grade 2 monitors' are NOT designed for 'full range' music reproduction.
The TINY 5 inch is NOT designed to imitate / reproduce
HUGE 22 inch Kick bass drums or HUGE
32 inch kettle drums !
The TINY 5 inch is CANNOT imitate / reproduce
HUGE 22 inch Kick bass drums or HUGE
32 inch kettle drums ! |
So, if you are trying to get TINY 5 inch (or SMALL 6 inch) speaker
to
imitate / reproduce HUGE 22 inch kick bass drum or HUGE 32 inch kettle
drum
you are wasting your time,
EVEN IF YOU USE 500 WATT TRANSISTOR AMPLIFIERS. |
So, if you are trying to get TINY 5 inch (or SMALL 6 inch) speaker
to
fill HUGE 20 feet room with LOUD PARTY MUSIC,
you are wasting your time,
EVEN IF YOU USE 500 WATT TRANSISTOR AMPLIFIERS. |
MONEY BACK GUARANTEE (less shipping cost. equipment returned during
1 month home trial) that
our eBay listing for
GBP £650 speaker with 8 inch bass speaker + superb 5 inch coated
paper midrange
+ 1 inch dome tweeter
will sound 10 time to 100 times better (depending
on how fussy you are)
than BBC designs like LS3/5a and 'offshoots'
like Spendor BC1
for better controlled bass, MUCH more realistic
human voice, better (or match) treble
at a REALISTIC LIFE SIZE VOLUME
WHEN USED WITH ANY AMPLIFIER (transistor or valve) ! |
If you think that your 40 year old speaker can compete with our modern
superb speakers,
MONEY BACK GUARANTEE (less shipping cost. equipment returned during
1 month home trial) that
any of our eBay listing for 'Triode Connection' amplifier, from GBP
£408 to GBP £1450
will make your 40 year old speaker sound |
much much much much better than any transistor amplifier, hybrid valve
/ transistor amplifier,
digital amplifier , class D amplifier, current dumping amplifier, etc
(regardless of nonsensical hype in Hi Fi magazines and internet forums
and absurd price from GBP £100 to GBP £10000000) |
| better than 'ultra linear' valve amplifier |
| better than '300B Single Ended' valve amplifier (usually, not enough
bass) |
better than competitors 'triode connection' valve amplifier with smaller
output transformers
or designers that do not have
COMBINED KNOWLEDGE of the Chinese designer (living in China)
and Lim Aik Leong (living in England) |
|
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