MATRIXSYNTH: ARP 2600 2601 v1.0 with 3620 keyboard


Friday, February 04, 2011

ARP 2600 2601 v1.0 with 3620 keyboard


via this auction

"The “orange and black” 2601 is the last 2600 version produced by ARP. It is the most reliable version, an update to the more common grey version. None of the modules are set in epoxy, making it more serviceable in the long run...

Here are a list of the specific repairs:
4 slider tips were repaired with identical replacements.
NOS power connector was re-fitted (comes with original cable)
NOS handle was fitted (quasi-identical)
NOS keyboard connector was fitted
Some Polyfusion-specific internal normalization was removed
Polyfusion front panel gate input removed and capped
2 Polyfusion connection inputs removed from the left side and patched
(one tiny hole on upper right panel left (see pics)
new orange LED in the power indicator
New capacitors on the power supply
Tolex on both cases was cleaned and refinished.

Additionally, my tech performed some great modifications :

Filter upgrade :
the 4072 filter was upgraded to correct the “error” causing the filter to open to a maximum of around 12k, now it's nice and bright when fully open (28k apparently). The filter kept its original character, just with extended range. The upgraded 4072 is a very nice sounding filter, just as good and useful as the previous moog-like filter Arp used, but a bit more unique and exclusive!

Reverb upgrade :
The reverb tank was changed top a looong type 9 NOS replacement. The first 2600s' had this type of tank and are known for their longer, fuller reverb.

The original reverb tanks were made by Hammond, their reverb division then took the name Accutronics. Thankfully I was able to purchase a remaining american made Accutronics tank (now made in Korea). The original small tank is included in the auction as well. My tech also performed a modification to lower the noise floor, and made the connections balanced using good quality cables (Canare). I am a fan of spring reverb and own a few and was very pleased with how this one sounded! The tank has been mounted vertically to avoid interference with the speakers at max volume but can still occur if you try hard. These mods, along with new caps on the power supply and proper calibration, greatly improve the 2600's signal-to-noise ratio." Additional pics here.





4 comments:

  1. Well apart from being 'fixed' what make him think this standard 2600 is worth THREE TIMES the going rate for the the same bloody machine ! ! ?

    A total scam joke !

    ReplyDelete
  2. Hi!
    I'm the owner. This auction is real and I'm an honest seller and took the time to describe everything in detail. I'm confident I got all my facts right, you however have not.

    It's not just fixed, it's upgraded as I'm sure you read, or maybe you didn't.
    The going rate for a functional ARP 2600 with keyboard goes from 4500 to 9500 depending on the model, condition, etc,
    This is based on eBay auctions in the last year and a half. I set my price in comparison to these sales.

    ReplyDelete
  3. too expensive in non original condition

    ReplyDelete
  4. I own an ARP 2601 for 31 years that will be on e-bay this week so take a look. Supply and demand set the price. I'm looking to replace it with something else that I can enjoy more during this time of my life. It will be hard to part with, but for the right price to me will be someone's dream come true.

    ReplyDelete

To reduce spam, comments for posts older than one week are not displayed until approved, usually same day. Do not insult people. For items for sale, do not ask if it is still available. Check the auction link and search for the item. Auctions are from various sellers and expire over time. Posts remain for the pics and historical purposes. This site is meant to be a daily snapshot of some of what was out there in the world of synths.

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