Magna Audio's custom-made counterweight balance and armboard service!

[Magna Audio]

I had a request to fit a Pioneer PL-71 tonearm to a Technics SK-1210 mk2.

This is something I had done myself many, many moons ago.
The customer read about it.
The arm was good fathers. The Pioneer deck sadly no longer around.

The Acos made PL-71 tonearm Requires a very low mounting point.
Twice as low as a standard Jelco!

No problem, I have very thick solid Ebony blocks.
Lots of dishing required.

Here is my PL-71 arm fitted to my test mule deck.

Off to Norway.

[Magna Audio]

Another TW Acustic Armboard.
This time in solid African Blackwood.

Super dense and hard. Only topped by Lignum Vitae for that.

Drilled for a Grace arm fitting.
With a recess machined in underside to allow the arm securing nut to thread on a bit more than the standard TW Acustic metal arm plate allows

Bound for the USA.



Looks a bit purple in this shot, but it isn't really.

[Magna Audio]

Busy in the workshop.
Several larger projects

The largest!
A pair of 1.9m high bass horns.
These will reach down to 50Hz and up to 400Hz

They will be the rythm section of a multi horn system and bound for Germany when finished.

Designed using computer modelling and using the classic horn loading friendly Eminence Kappa 12 driver.







Much work still to be done.

[Magna Audio]

African Blackwood record deck platform.

2.5cm thick, circa 50cm x 40cm

Bound for Singapore.

[Magna Audio]

Here's an ebony armboard for the Nottingham Analogue Dais turntable.

Fitted for a Dynavector DV507 tonearm.

[Magna Audio]

Solid ebony armboard for a new Technics SL-1210 GR deck.
Custom extra thick crafted to fit the Audiomods series 6 tonearm with VTA adjuster mechanism.

This one features bolts from above mounting, and my non-invasive fitting kit.
The customer wants to be able to move the arm to other decks without the hassle of taking the turntable apart every time.
Simple to just remove the armboard and remove the arm locking nut.

Ebony, the perfect balance of dampening and tonal resonance.
Less dense than aluminium etc, but still a very dense natural wood. It absorbs the very low frequency tonearm oscillations -
No ringing metal! No outer ring and thinner centre plate held together with bolts!



And on test deck with bolts

[Magna Audio]

And here's another ebony armboard but for a Technics SL-1210 G deck.

Again for Audiomods series 5/6 tonearm, but without the VTA adjuster.

This one features non-invasive mounting from below / flush top surface.

Ebony, the perfect balance of dampening and tonal resonance.
Less dense than aluminium etc, but still a very dense natural wood. It absorbs the very low frequency tonearm oscillations -
No ringing metal! No outer ring and thinner centre plate held together with bolts!



Also 3 custom made solid ebony spacers.
2mm / 3mm / 4mm

[Magna Audio]

The solid Ebony Armboard I made for a Nottingham Analogue Dais turntable and Dynavector DV507 tonearm is now installed.
Looking and sounding good.











Many thanks to the customer for the great pictures.

[Magna Audio]

The big downward firing bass horns!
Coming along nicely. The stands are done.
Time for a photo op.

These are 1.7m long (horn path) exponential bass horns.
Will cover 50Hz to 400Hz, using 12" horn loading friendly Eminence drivers.

Backboxes are from 21mm birch plywood.
Platforms and support yolks for the smaller horns to go.










Bound for a fellow 5 way horn enthusiast in Germany

[Magna Audio]

Another TW Acustic Armboard.
This time in solid ebony.
For a Ikeda 12" tonearm.

UK for this one.