free web hosting | free website | Web Hosting | Free Website Submission | shopping cart | php hosting

HI! Welcome to my AKAI REEL TO REEL'S Photo's Page...

>>>>>> Suggestions and Comments are Welcome.. <<<<<<


The Akai 4000 Series

Next came the 4000 Series, which used the familiar two knob mechanical control operation block ( some of the GX-2xx series also did ).

Basically, the 4000 Series is the low end single motor deck. The GX-4000D was one of the last Akai's made, and is the only Series 4000 unit which has the GX Heads. These sets use a single speed motor. To go to the slower speed or the faster speed, on those sets, it is done manually and mechanically.

If the rotating capstan has a knurled cap in place, it is retaining the thin metal CAPSTAN SLEEVE, and the set is then operating at 7 1/2 ips which is the faster speed. These items must be manually removed to change from the faster 7 1/2 ips speed to the slower 3 3/4 ips speed. If the set is running at the slower speed, the capstan will show a small hole in its center (to be used by the knurled retaining cap after you put the capstan sleeve on first).

The Capstan Sleeve must be taken and placed onto the capstan and retained using the Knurled Cap ( which has a reverse thread ) to go to the faster speed. Speed change is easily done when the set is turned off, or the takeup tension arm is relaxed into the down position, causing the motor to stop. To switch to the slower speed, unscrew the knurled cap - do so counter-clockwise. Then lift and remove the capstan metal part, and then place this capstan sleeve on the hitching post, which is present either above the headcover ( as on the 4000DS or 4000DB ) or under the head cover ( as on the GX-4000D, the head cover pulls straight off, and the hitching post is next to the black erase head ). The hitching post is also threaded so the knurled cap will attach to keep the sleeve in place. Don't lose either piece! These capstan sleeves and caps are impossible to duplicate or machine up, so far, at least, no-one has been able to do it. The EQ Switch should be then set to change the playback amplifier equalization to match the speed you have chosen to use.

Sets in the M series and 1700 series also use capstan sleeves to initiate a speed change, but they are mechanically somewhat different parts and are NOT interchangeable, and those other sets don't use the retaining cap, and so they also don't have a hole in the center of the capstan. Within the 4000 Series, a number of sets are mechanically very similar, all with the two- knob mechanical operation block. There were various electrical differences, some had different motors, some had permalloy heads, while later sets had the GX Crystal Ferrite type, some had large VU meters, all 4000 series sets were transistor, only the early M Series or 1700 / 1800 series sets had vacuum tube electronics.

Here is a picture of a vintage 4000DB unit:


Here is another picture of a vintage 4000DB unit:


Here is a picture of a vintage 4000DS unit:

( maybe you can tell, this one has the capstan sleeve removed from the capstan and placed on the hitching post above the headcover )

Here is a picture of a vintage 4000DS MKII unit:


Here is a picture of a vintage 4400D unit:


Here is another picture of a vintage 4400D unit:


Here is a picture of a vintage 4000DS MKII unit:


Here is are a couple of pictures of the vintage GX-4000D unit:


Here is a picture of a vintage GX-4000DB unit:


Go to the next Akai Vintage Photo Page The GX Series Page

Go to the prior Akai Vintage Photo Page 1700/1800/1900 Series Page

This page is under construction ( Like software, the job is never done!....)
Prior Update - 1-23-2003 7:00 PM.
Current Revision - November 2nd, 2010 @ 8:09 PM.


Comments/Suggestions/Critiques/Questions to:
Email to:abcr100k@yahoo.com

Alternate Email to:abcr100k@hotmail.com


This page, and all contents, are Copyright(C) 1997 ... 2010 by:
Steven L. Bender

Return to Steven L. Bender's HOME PAGE
Return to Top of Page