Two Rock Classic

Overdrive Special, Steel String Singer, Dumbleland, Odyssey, Winterland, etc. -
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novosibir
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Two Rock Classic

Post by novosibir »

The Classic Series introduces a new era at K&M Analog Designs. With our deepest gratitude to artists Steve Kimock and John Mayer, among others, we’re reinventing our 2 channel platform, adding more tone shaping features, yet maintaining the utter simplicity and uncluttered signal path that creates our signature tone and feel.
Although we admit to being influenced by the myriad of famous (and not so famous) guitarists of exceptional talent who have guided our path thus far, we’ve discovered some very common ground among guitarists. Shimmering cleans, harmonically rich overdrive, chime, and just the right amount of sag coupled with articulation are featured on every guitarist’s list. By offering a few variations in levels of compression, power level and tube configuration, we can now offer guitar amplifiers that are so versatile, and so musical, that these subtle variations in execution can easily create the perfect amp for each guitarist. That’s a bold statement, for sure, but as the Classic Series unfolds, players around the globe will be hearing their true voice through a Two-Rock amplifier.
The Classic Type 1 speaks with authority. All equalization, tone shaping, sag, and other parameters were chosen by us personally. With strong elements of the Kimock Signature present, seasoned Two-Rock veterans will be fondly remembering the original K&M Custom and Emerald Pro, among others. Even more proprietary components have been added to the list of parts made exclusively for us to continually improve our amps. The lead channel features an externally adjustable input gain trim control, allowing the player to select smooth overdriven tones or add more attack and bite if desired. The presence control has been eliminated and a contour control has been added. At the twelve o’clock position, the amp’s frequency response is flat. Rotating the knob counter-clockwise, will decrease the highs and increase the lows, and vice-versa for clockwise movement. This is ideal for switching between single coils and humbuckers without touching other controls or compensating for different speaker cabinets. It’s also a great way to compensate for room acoustics without changing your entire preamp EQ.
The Classic features Preamp Out and Power Amp In jacks, and does not have an internal buffered loop. Additional tone shaping features include a footswitchable FET preamp stage, 3 way preamp (negative) feedback switch, and 3 way output section (negative) feedback switch. The preamp switch offers zero feedback, CR feedback level, and ultra hi feedback levels for high output or active pickup optimization. In addition, the output stage can be tailored via a 3 way feedback switch to make the power stage tighter, looser, or more open and responsive.
Quick Facts:
2 channel, cascading, SS Rectifier, 2 X 6L6, 50 watts or 4 X 6L6, 100 watts.
Footswitchable FET preamp stage with level control, treble, middle, bass, bright, mid, deep, dual EQ settings, boost, gain and master each channel, contour control. 4, 8, 16 ohm output
Dual function LED footswitch for clean/lead and tone bypass.
3 way preamp(negative) feedback switch, and 3 way output section(negative) feedback switch
Dimensions: 20 ¾” L x 10 ¾” D x 12” H / Weight: 40 Lbs for 50 watt and 48 Lbs for 100 watt.
No goo, but... :(

And a street price of 5,990.00 EUR here in Germany :shock: There must somebody have very deep pockets in his pants, ha?

Larry
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novosibir
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Re: Two Rock Classic

Post by novosibir »

Oh yes, sorry! Forgot the amp's back.

Larry
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heisthl
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Re: Two Rock Classic

Post by heisthl »

Is that a bypass cap on the PI tail resistor?
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novosibir
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Re: Two Rock Classic

Post by novosibir »

heisthl wrote:Is that a bypass cap on the PI tail resistor?
Yes it is! Means, that the actually presence internal is fixed at '10'.

The Contour control is similar to the VOX cut control operating between the PI's plates - the small 'Orange' below one of the 'Big Blue', what's presumably a 2200p going to a 250K log. pot as the Contour.

Larry
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jelle
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Re: Two Rock Classic

Post by jelle »

Could be a .0047 uf too.... I always liked the AC30 cut control!

I also see that the Presence knob is internally set at 10 and the pre OD trimmer is located on the back. A three way switch for NFB resistor or to change speaker tab selection. Probably the last one...

Inventive how they place the caps and resistors under the board.....goo is not popular these days.

Must be a cool amp! Cool direction for the powerstage Presence stuff!Thanks for the report Larry! 8)
Jelle
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jelle
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Re: Two Rock Classic

Post by jelle »

What is that black thing between those two radial caps?
Jelle
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Bob-I
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Re: Two Rock Classic

Post by Bob-I »

jelle wrote:What is that black thing between those two radial caps?
Jelle
Looks like a bridge rectifier, most likely for the relay supply.
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jelle
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Re: Two Rock Classic

Post by jelle »

Thanks!
Jelle
Sven
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Re: Two Rock Classic

Post by Sven »

Greetings,

Just curious, what brand are those blue caps (PI section)?

Sven
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novosibir
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Re: Two Rock Classic

Post by novosibir »

Sven wrote:Just curious, what brand are those blue caps (PI section)?
They are SBE's, but for K&M dimped into blue coating instead of orange - to make it somehow 'special' and to confuse us :lol:

They're also printed w/ "K&M"

No problem in these days, to get such stuff in the paint colour and silkscreening by your demands - you only have to order 500 pcs. of each value, sometimes it starts already at only 100 pcs. of each value, i.e. F&T electrolytics.

Larry
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Darkbluemurder
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Re: Two Rock Classic

Post by Darkbluemurder »

jelle wrote:Could be a .0047 uf too.... I always liked the AC30 cut control!

I also see that the Presence knob is internally set at 10 and the pre OD trimmer is located on the back. A three way switch for NFB resistor or to change speaker tab selection. Probably the last one...

Inventive how they place the caps and resistors under the board.....goo is not popular these days.

Must be a cool amp! Cool direction for the powerstage Presence stuff!Thanks for the report Larry! 8)
Jelle
Me, too! The cut control is one of my favorite modifications to my favorite Marshall. I haven't tried it on a *umble or F*nder design though for the fear that it would take the chime away from the clean tones. Of course setting the presence to full with the bypass cap gives a different starting point. I probably didn't think of that since usually I don't like the sound with the presence cranked. On the other hand I always thought that the presence control in my D-style amps sucked - too shrill on 10, good on 9 and no significant change between 0 and 9 (with a 5kB pot - never had a 2kB). But going with the bypass cap and the cut control is definitely worth trying.
v00d00blues79
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Re: Two Rock Classic

Post by v00d00blues79 »

this is a new take on hiding the preamp... put it on the under side of the board... :roll:


Andy
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Re: Two Rock Classic

Post by snider »

[quote="v00d00blues79"]this is a new take on hiding the preamp... put it on the under side of the board... :roll:


Nice sounding amp.
Last edited by snider on Thu Sep 13, 2007 3:15 pm, edited 4 times in total.
v00d00blues79
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Re: Two Rock Classic

Post by v00d00blues79 »

Heh... :grin:

Andy
drz400
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Re: Two Rock Classic

Post by drz400 »

v00d00blues79 wrote:this is a new take on hiding the preamp... put it on the under side of the board... :roll:


Andy
I think I would rather see the silicone on the top since flipped over will make it impossible to service, especially tweak. I just do not understand someone buying an amp so hard to service or tweak.
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