Archive for October, 2011

An Afternoon of Speaker Comparisons

October 24, 2011

In this week’s blog we get together with some members of the Sydney Shadows Club, ie guitar playing enthusiasts who love the guitar instrumental music popularised by the Shadows (UK) and many others, in the late 1950’s/early to mid 1960’s.

The local NSW Central Coast enthusiasts get together for an all day jam session every 2nd Thursday by invitation only at a private residence on a small acreage (so no complaints from neighbours !).

I make a point of attending this jam session whenever possible, at least for an hour or so. You will notice there are always a couple of Expressionist series amps from the Richards Amplifier Company – Australia in attendance.

On this particular day, I turned up with a newly completed 1×12 tone cabinet, which was a custom order for Chet Romero, an Aussie slide guitar specialist, loaded with the Weber 30W Blue Dog speaker. We have supplied this specific Weber model on previous occasions with our Expressionist amps, always with great results.

Part of the afternoon was devoted to conducting comparison tests between the Weber loaded 1×12 cab and a well played in 1×12 cab loaded with the mighty Celestion 15W Blue Alnico model. The cabs are of identical proportions, athough the older Celestion loaded cab was a TV front style, and had a brown basketweave grille, as distinct from the checkerboard grille of the (red) Weber loaded cab. The different grilles do have an impact on tone. We will explore this issue in a forthcoming blog.

Well, both speakers sounded great in their own right, but there were unexpected differences. In all comparisons, a 1963 Fender Strat in original condition was played through a 7.5W Richards Studio Expressionist amp.

This amp was designed from the ground up for home studios and/or home jamming, and sounds just as good as the 15W and 30W models, its just that it breaks up earlier. The ’63 Strat played through such an amp easily replicates the classic Hank Marvin tones from the Shadows golden era.

The majority opinion after numerous Shadows instrumentals was that the Celestion Blue was a bit brighter (but not in a bad way) and quite noticeably louder, and broke up later ! The Weber lacked the characteristic growl in the lower midrange of the Celestion, in fact if anything it was the more refined of the two.

However, we all agreed the Weber sounded great, in spite of the earlier break up. We were intrigued by the fact that the Weber imparted this delicious kind of midrange gronking quality on the wound strings of the Strat. Actually, I don’t have the appropriate words to describe it, but it was definitely there !

The chrome plated stand you see in some photos was one of a number custom made for members of the Sydney Shadows Club by an enterprising fellow. These stands replicate the look of the original stands used by groups such as The Shadows and The Beatles with their Vox amps back in the day.

The Shadows, and Hank Marvin in particular, had their own signature model Burns guitars back in the day. Some of these models have been reissued by Burns of London in recent years, although no longer made in the UK. They do capture the tone from that period quite convincingly, and the well-engineered tremolo (vibrato) design works well for this style of music (but probably not for dive-bombing styles).

In our final two photos we have the ’63 Strat with the 7.5W Studio Expressionist amp and 1×12 tone cabinet loaded with the Celestion Blue, as used in our comparisons. On top of the amp is a Rich Switch A/B to switch between the two distinct channels, and a tape-echo simulator that probably very few of you have seen – the Amtech Age One.

The Amtech is manufactured by a small Swedish company I believe, possibly their main products are in the medical equipment industry. But whatever it is they do, they are obviously serious Hank Marvin fans, as they designed a completely analogue circuitry tape-echo simulator, built in a 1RU high rack-mount enclosure, that comes closer to anything else I’ve ever heard to specifically reproducing the tape-echoes that played such a major role in recording the Shadows sound.

The other cool characteristic of the Amtech is that the preamp sounds very good on its own, with the echoes bypassed. A very warm and musical analogue sound. The pictured amp was one of the very first in our Expressionist series of models. These amps, as per all our current range, were designed and built directly as a result of customer requests and/or suggestions. This example is the Studio Expressionist model, meaning that the output stage can be switched from a pair of EL84 output valves, operating in class-A/push-pull, to a pair of 6V6 output valves operating under similar conditions, but with different bias conditions. In either mode the amp is self-biasing. The unused pair of output valves remains at full temperature for instant operation, but is only drawing a trickle of current, extending valve life.

In EL84 mode, naturally the amp sounds distinctly British, with either CH-1 (EF86 pentode), or CH-2 (12AX7 “top boost”), although Hank Marvin enthusiasts would automatically choose CH-1 for the most authentic tones possible from any amps we’ve heard thus far. In 6V6 mode with either channel, the amp delivers tones that would only be possible from some of the more obscure 50’s/60’s USA manufactured amps. For example, the combination of CH-1’s pentode preamp with cathode-biased 6V6’s would suggest vintage Gibson amp tones. Perfect for rock-a-billy, jazz, swing, blues, rhythm&blues, etc. CH-1 and CH-2 can be patched together in-phase (or combined with an A/B/Y pedal) for a huge tone.

Well – thanks to the Shadows enthusiasts for their input into this week’s blog. Please see earlier blogs describing how the Expressionist series amps have been used for recording and performing by very demanding contemporary guitar stylists. For those who might be interested, I believe that Amtech have an Australian distributor. Please tune in again next week !   Regards – Ivan.

Chet Romero takes delivery of his new 1X12 tone cabinet in red tolex with checkerboard grille

October 16, 2011

Chet Romero is pictured here proudly displaying his brand new 1×12 tone cabinet in stunning red tolex & checkerboard grille, built by the Richards Amplifier Company – Australia. This tone cabinet is loaded with the Weber Blue Dog 30W alnico instrument speaker, specifically intended to be matched with Chet’s most recent amp acquisition – the Orange Tiny Terror 15W head. As you may have read in previous blogs, we have been servicing Orange amps for many years now, for the musicians of Central Coast NSW, and also for Bondi Intermusic of Sydney.

You can see that our standard Richards Amplifier Company logo is missing from this cab, instead Chet has supplied us with his own personal logo which is basically a truckers symbol of a very shapely and unclad female reclining on the bonnet of a truck. We are happy to indulge our customers requirements and personalise our cabs in this way, so bring it on ! Easy to see that Chet is a staunch St George supporter, by the way.

 

 

 

Having played with Men at Work, the Foreday Riders, and many more, plus composed music for film, television and live theatre productions, Australia’s wildest blues guitarist is about to launch his latest band Chomp Incorporated in November 2011, so watch out for more news about that ! Chet played that delicious little slide guitar solo on Men at Work‘s last single, Everything I Need (from the Two Hearts album).

This Weber-loaded tone cabinet sounded phenomenal either with the Tiny Terror or our own Richards Expressionist Series amps. In next week’s blog we get together with some members of the Sydney Shadows Club and compare the Weber against the Celestion 15W alnico Blue speaker. They both sounded great, but there were unexpected differences ! Thanks to Chet Romero for his news and his continued interest in our products and services. Regards – Ivan.

A pair of problem solving pedals

October 7, 2011

Hello ! In this week’s blog we’ll draw attention to a pair of problem solving pedals hand-wired by Ivan Richards Audio fx right here in Gosford, New South Wales. These pedals don’t have the glamour and appeal of distortion and/or modulation models, that’s for sure, and we don’t build them in large numbers either, but for a number of performing musicians out there this type of pedal can make life a lot easier.

Our first example, in the photo above, is called the Double A/B Pedal, and is one of our ongoing Rich Switch series of signal routing pedals. This design is a passive, bi-directional, 100% hand-wired selector intended to switch two pairs of instruments. Four LED status indicators alert the player as to which instruments have been selected. The true hard-wired bypass design prevents signal loss or colouration, plus prevents phase problems being introduced. 9V battery or pedalboard power supply operation is required for the LED status indication only. This pedal is not intended to be used on powered speaker connections.

This unique pedal was originally created a few years back when we were contacted by Australia’s Mark Lizotte, who was at the time preparing to go on tour with two pairs of instruments, one pair of electrics and one pair of acoustic guitars. The intention was to use wireless transmitter/receivers for mobility, so this would have resulted in four wireless packs. By introducing the Double A/B Pedal, the number of wireless packs could be halved, and the whole rig streamlined. This is why the two pairs of A/B are labelled electric and acoustic, however customers can label the top panel in any way they find appropriate to their individual circumstances. Dymo labelling works fine in this situation, and can be removed without damage.

To prevent an earth loop being introduced (a.k.a. ground loop in the USA), the signal earths for the electric instruments selector and the acoustic instruments selector are isolated from each other. The Hammond die-cast aluminium enclosure is earthed via the electric instruments circuit. The electric instruments output jack also switches on the internal 9V battery, when installed.

Our second example, pictured to the right, is called (as you might expect) the FX Looper pedal. Guitarists who use stompboxes (and who doesn’t ?) often have to resort to costly loop-switching systems to solve signal-degradation problems introduced when bypassed fx are not switched completely out of the signal chain. The reason for this is that most fx devices do not provide a true, hard-wired bypass when the effect is switched out (even in some cases where the manufacturer implies the device is true bypass). When this happens, your clean guitar signal can lose definition and clarity due to the bypassed device’s tone-sucking circuitry. The more pedals/devices you string together, the worse the problem becomes.

The FX Looper pedal allows you to place a preset combination of fx pedals or devices in each of its two loops, and switch the chain in or out of the signal path with the loop bypass footswitch. Because it’s a true hard-wired bypass, your clean signal remains obsolutely free of stompbox interaction and/or signal degradation. In other words, the FX Looper gives you the purest possible connection between your guitar and your amp when in bypass mode of operation.

Our V1.3 Looper offers two independent loops which are wired for series operation (ie, loop #1 output feeds loop #2 input), and each loop has its own dedicated LED status indicator. The input jack is placed on the right-hand side of the enclosure, as per accepted tradition, but the output jack is parallel-wired to both the left hand and right hand side of the enclosure, facilitating placement in different positions on a pedalboard, for example. 9V battery or pedalboard power supply operation is required for LED status indication only.

So, to summarise, there are many advantages to using an FX Looper in your setup. There is no additional active circuitry in the signal path, ie the Looper adds no noise. There is no load on the guitar pickups when in bypass mode, ie no tone-sucking. The high-impedance send to fx pedals provides correct interaction with vintage stompbox input circuitry. To some extent the Looper is able to mute switching pops and clicks – this minimises a typical vintage fx pedal design problem.

Please join us again next week for another (hopefully) informative and entertaining blog. In coming blogs we will look at a new tone cabinet in stunning red tolex for Aussie slide-guitar specialist Phil B Colson. Philby played that delicious little slide solo on the last Men At Work single, back in the 80’s. We will also conduct a speaker comparison with some older guys from the Sydney Shadows club. We also hope to check in with Ilya, the guitarist with Continental Robert Susz, and Marcus from NSW band Sparrows.

Approved service centre for Orange amplifiers

October 3, 2011

Hello everybody ! Welcome to this week’s blog. It’s been a busy October long weekend 2011, with gigs for the 5-piece band plus the duo, so this will be one of the less detailed blogs, but hopefully still of interest.

Actually, we have been repairing Orange Amplifiers for years, but not the warranty claims. Bondi Intermusic (Sydney) have sent us quite a few over the years for servicing. With the possible exception of the made-in-China Tiny Terror series, the Orange amps have been consistently well made and have presented very few servicing issues. The modern Orange amp has a particular sound, which is quite different to the original amps from the 60’s/70’s, which had a huge clean sound, and baxandall EQ, which is not everybody’s cup-of-tea. The recent amps have more conventional passive/interactive EQ and a contemporary “British” sound that is more appropriate for grungier styles ( to our ears anyway).

If you are the lucky owner of an original Orange or Matamp from the 60’s/70’s (and most definitely the current Matamps, which are an excellent boutique-grade amp from the UK), and you want your amp serviced/overhauled/restored by someone who knows what they’re doing and has a genuine passion for this kind of work, then please contact Ivan Richards Audio.

Orange amplifiers are distributed in Australia by the same people who distribute Gibson & Epiphone guitars. If you have a warranty service claim there is a procedure to be followed. First thing is to contact the dealer who sold you the product. They will book it in with the distributor. A repairer to resolve the warranty claim will be nominated by the distributor on the basis of both competency and geographical location.

The AD30TC 2×12 combo amplifier in the photos belongs to a regular customer of ours, a working muso (with a day gig), based on the Central Coast of NSW. The almost brand new amp just “stopped”, and the warranty repair was referred to us via Turramurra Music (Sydney). The reason soon became clear after removing the chassis from the cab (not a quick job, by the way) – one of the internal fuses was “blown”. The fuse protecting the 6.3V AC heater supply to the valves (tubes), to be precise. However, in this case the blown fuse was not indicative of a bigger problem, it was just one of those things that happen, usually at the most inconvenient time. We replaced the fuse and subjected the chassis to a power output test, burn-in test, electrical safety test, and final play test/functionality test. All OK !

In the final photo, it may not be very clear from our crap photography in workshop lighting conditions – but we are observing a sine wave on the oscilloscope, as part of the power output test for this amp. This is one procedure for checking for abnormal amplifier behavior under load and also accurately measuring the audio power actually delivered to a nominated load, for example – 8 ohms.

By the way, just a suggestion – if you have a bad back – don’t invest in one of these 2×12 combo’s ! They are seriously heavy. More next week – Ivan R.