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    As filed with the Securities and Exchange Commission on January 6, 1999

                                               Registration No. 333- ___________

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                             ______________________
                                        
                                    FORM S-8
                             REGISTRATION STATEMENT
                                     UNDER
                           THE SECURITIES ACT OF 1933
                                        
                                SPX CORPORATION
             (Exact name of registrant as specified in its charter)

          DELAWARE                                            38-1016240
(State or other jurisdiction                                (I.R.S. Employer
of incorporation or organization)                           Identification No.)

                            700 Terrace Point Drive
                         Muskegon, Michigan 49443-3301
                           Telephone: (616) 724-5000
    (Address, including zip code, telephone number, including area code, of
                   registrant's principal executive offices)
                                        
          SPX CORPORATION RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN
                            (Full title of the plan)
                                        
                             Christopher J. Kearney
                 Vice President, Secretary and General Counsel
                                SPX Corporation
                            700 Terrace Point Drive
                         Muskegon, Michigan 49443-3301
                           Telephone: (616) 724-5000
 (Name, address, including zip code, and telephone number, including area code,
                             of agent for service)

                                   Copies to:
                             George C. McKann, Esq.
                           Gardner, Carton & Douglas
                       321 North Clark Street, Suite 3200
                            Chicago, Illinois 60610
                                        
                        CALCULATION OF REGISTRATION FEE

Title of Securities Amount to be Proposed Maximum Proposed Maximum Amount of to be Registered Registered(1)(2) Offering Price Per Share Aggregate Offering Price Registration Fee ---------------- ---------------- ------------------------ ------------------------ --------------- Common Stock, par value $10 per share (3)(4) 1,000,000 $65.75 $ 65,750,000 $18,279
(1) In addition, pursuant to Rule 416(c) under the Securities Act of 1933, as amended, this Registration Statement also covers an indeterminate amount of interests to be offered or sold pursuant to the employee benefit plan described herein. (2) Together with an indeterminable number of additional securities in order to adjust the number of securities reserved for issuance pursuant to the plan as the result of a stock split, stock dividend or similar transaction affecting the Common Stock, pursuant to 17 C.F.R. Section 230.416. (3) Includes associated rights ("Rights") to purchase Series A Junior Participating Preferred Stock of the Registrant that will not be exercisable or evidenced separately from the Common Stock of the Registrant prior to the occurrence of certain events. (4) Estimated in accordance with Rule 457(c) and (h)(1), the proposed maximum offering price per share, proposed maximum aggregate offering price and the amount of the registration fee are based upon the average of the high and low prices reported on the New York Stock Exchange on January 4, 1999. 2 SPX CORPORATION REGISTRATION STATEMENT ON FORM S-8 INCORPORATION BY REFERENCE OF EARLIER REGISTRATION STATEMENT ON FORM S-8 SPX Corporation ("Registrant" or the "Company") has earlier filed a registration statement on Form S-8 (File No. 333-29843) relating to the SPX Corporation Retirement Savings and Stock Ownership Plan (the "Earlier Registration Statement"). This Registration Statement registers additional shares and plan interests for offering pursuant to such plan. Subject to Item 3 of Part II of this Registration Statement, the contents of the Earlier Registration Statement are incorporated herein by reference. PART II ITEM 3. INCORPORATION OF DOCUMENTS BY REFERENCE. There are hereby incorporated by reference in to this Registration Statement the following documents and information heretofore filed with the Securities and Exchange Commission (the "Commission") by the Registrant or the SPX Corporation Retirement Savings and Stock Ownership Plan (the "Plan"): 1. The Registrant's Annual Report on Form 10-K for the fiscal year ended December 31, 1997; 2. The Registrant's Quarterly Reports on Form 10-Q for the quarters ended March 31, June 30 and September 30, 1998; 3. The Registrant's Current Reports on Form 8-K dated July 20, 1998 (as amended September 9, 1998); August 14, 1998; October 5, 1998; October 9, 1998 (as amended November 5, 1998) and January 6, 1999; 4. The description of Registrant's capital stock contained in the Company's Registration Statements pursuant to Section 12 of the Exchange Act and any amendments or reports filed for the purpose of updating any such descriptions; and 5. The Plan's Annual Report on Form 11-K for the year ended December 31, 1997. In addition, each document filed by the Registrant or the Plan pursuant to Sections 13(a), 13(c), 14 and 15(d) of the Exchange Act after the date hereof, and prior to the filing of a post-effective amendment which indicates that all securities offered hereunder have been sold or which deregisters all securities then remaining unsold under this registration statement, shall be deemed to be incorporated by reference herein and to be part hereof from the date of filing of such documents. ITEM 5. INTERESTS OF NAMED EXPERTS AND COUNSEL. Peter H. Merlin, who is a director of the Company and a partner of Gardner, Carton & Douglas, which is delivering the opinion filed as Exhibit 5.1 to this Registration Statement, beneficially owned 13,336 shares of the Company's Common Stock as of March 16, 1998. ITEM 8. INDEX TO EXHIBITS. Exhibit Number Description of Document -------------- ----------------------- 4.1 Rights Agreement dated as of June 25, 1996 between the Company and The Bank of New York, as Rights Agents, relating to Rights to purchase Preferred Stock under certain II-1 3 circumstances, incorporated herein by reference from the Company's Registration Statement on Form 8-A filed on June 26, 1996. 4.2 Amendment No. 1 to Rights Agreement, effective October 22, 1997, between the Company and The Bank of New York, incorporated herein by reference from the Company's Registration Statement on Form 8-A/A filed on January 9, 1998. 23(i) Consent of Arthur Andersen LLP 23(ii) Consent of Ernst & Young LLP 24.1 Powers of Attorney (included on signature page) The Registrant hereby undertakes to submit the Plan and any amendment thereto to the Internal Revenue Service ("IRS") in a timely manner and to make all changes required by the IRS in order to qualify the Plan under Section 401(a) of the Internal Revenue Code of 1986, as amended. II-2 4 SIGNATURES Pursuant to the requirements of the Securities Act of 1933, as amended, the Registrant certifies that it has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Muskegon, State of Michigan, on this 16th day of December 1998. SPX CORPORATION By: /s/ Patrick J. O'Leary -------------------------------- Patrick J. O'Leary Vice President Finance, Treasurer and Chief Financial and Accounting Officer POWER OF ATTORNEY KNOW ALL PERSONS BY THESE PRESENTS, that each person whose signature appears below constitutes and appoints John B. Blystone, Christopher J. Kearney or Patrick J. O'Leary, and each of them, his true and lawful attorneys-in-fact and agents, with full power of substitution and resubstitution for him and in his name, place and stead, in any and all capacities, to sign, execute and file this Registration Statement and any or all amendments (including, without limitation, post-effective amendments) to this Registration Statement, and to file the same, with all exhibits thereto and all documents required to be filed with respect therewith, with the Securities and Exchange Commission or any regulatory authority, granting unto such attorneys-in-fact and agents full power and authority to do and perform each and every act and thing requisite and necessary to be done in connection therewith and about the premises in order to effectuate the same as fully to all intents and purposes as he might or could do if personally present, hereby ratifying and confirming all that such attorneys-in-fact and agents or his or their substitute or substitutes, may lawfully do or cause to be done. Pursuant to the requirements of the Securities Act of 1933, as amended, this Registration Statement has been signed by the following persons in the capacities indicated on this 16th day of December 1998. /s/ John B. Blystone /s/ Patrick J. O'Leary - ------------------------------- ------------------------------- John B. Blystone Patrick J. O'Leary Chairman, President and Vice President Finance Chief Executive Officer Treasurer and Chief Financial Director Officer and Accounting Officer /s/ J. Kermit Campbell /s/ Sarah R. Coffin - ------------------------------- ------------------------------- J. Kermit Campbell Sarah R. Coffin Director Director /s/ Frank A. Ehmann /s/ Charles E. Johnson II - ------------------------------- ------------------------------- Frank A. Ehmann Charles E. Johnson Director Director /s/ Ronald L. Kerber /s/ Peter H. Merlin - ------------------------------- ------------------------------- Ronald L. Kerber Peter H. Merlin Director Director /s/ David P. Williams - ------------------------------- David P. Williams Director S-1 5 Pursuant to the requirements of the Securities Act of 1933, as amended, the SPX Administrative Committee, which administers the Plan, has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the city of Muskegon, state of Michigan, on this 16th day of December 1998. SPX CORPORATION RETIREMENT SAVINGS AND STOCK OWNERSHIP PLAN By: /s/ Christopher J. Kearney --------------------------- Name: Christopher J. Kearney Title: Vice President, Secretary, General Counsel & Member of the SPX Administrative Committee S-2 6 INDEX TO EXHIBITS Exhibit Number Description of Document - -------------- ----------------------- 4.1 Rights Agreement dated as of June 25, 1996 between the Company and The Bank of New York, as Rights Agents, relating to Rights to purchase Preferred Stock under certain circumstances, incorporated herein by reference from the Company's Registration Statement on Form 8-A filed on June 26, 1996. 4.2 Amendment No. 1 to Rights Agreement, effective October 22, 1997, between the Company and The Bank of New York, incorporated herein by reference from the Company's Registration Statement on Form 8-A/A filed on January 9, 1998. 23(i) Consent of Arthur Andersen LLP 23(ii) Consent of Ernst & Young LLP 24.1 Powers of Attorney (included on signature page)
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                                                                EXHIBIT 23.(i)

                   CONSENT OF INDEPENDENT PUBLIC ACCOUNTANTS


As independent public accountants, we hereby consent to the incorporation by
reference in this registration statement of our report dated February 5, 1998
(except with respect to the matter discussed in Note 17, as to which the date
is February 17, 1998) included in SPX Corporation's Form 10-K for the year 
ended December 31, 1997, and to all references to our firm included in or 
made a part of this registration statement.

                                                  ARTHUR ANDERSEN LLP


Chicago, Illinois
January 5, 1999


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                                                                  EXHIBIT 23(ii)

                        CONSENT OF INDEPENDENT AUDITORS

     We consent to the incorporation by reference in the SPX Corporation
Registration Statement on Form S-8 pertaining to the SPX Corporation Retirement
Savings and Stock Ownership Plan of our report dated January 23, 1998 with
respect to the financial statements  and schedule of General Signal Corporation
and consolidated subsidiaries included in the General Signal Corporation Annual
Report (Form 10-K) for the year ended December 31, 1997 filed with the
Securities and Exchange Commission and incorporated by reference in the current
report filed by SPX Corporation on Form 8-K/A dated November 5, 1998.


                                                       ERNST & YOUNG LLP


Stamford, Connecticut

January 5, 1999