SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                  _____________


                                  SCHEDULE 13G

             INFORMATION STATEMENT PURSUANT TO RULES 13d-1 AND 13d-2
                    UNDER THE SECURITIES EXCHANGE ACT OF 1934
                               



                                PLANTRONICS, INC.
                                (Name of Issuer)


                                  COMMON STOCK
                         (Title of Class of Securities)


                                    727493108
                                 (CUSIP Number)


 









                           
* The remainder of this cover page shall be filled out for a reporting  person's
initial filing on this form with respect to the subject class of securities, and
for any  subsequent  amendment  containing  information  which  would  alter the
disclosures  provided  in a prior cover page.  The  information  required in the
remainder  of this cover page shall not be deemed to be filed  for the purpose
of Section 18 of the  Securities  and  Exchange  Act of 1934 (Act) or  otherwise
subject to the  liabilities  of that  section of the Act but shall be subject to
all other provisions of the Act (however, see the Notes.)


CUSIP No.              13G                      Page          of        Pages
727493108

     1       NAME OF REPORTING PERSONS                      Lord, Abbett & Co.
              I.R.S. IDENTIFICATION NO. OF ABOVE PERSONS   13-5620131
             (entities only)
     2       CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP*  (a)   x
                                                                (b) __
     3       SEC USE ONLY
     4       CITIZENSHIP OR PLACE OF ORGANIZATION   NEW YORK

         NUMBER OF             5     SOLE VOTING POWER       964,200
          SHARES
       BENEFICIALLY
       OWNED BY EACH
         REPORTING
        PERSON WITH
                   6         SHARED VOTING POWER      0
                   7         SOLE DISPOSITIVE POWER   964,200
                   8         SHARED DISPOSITIVE POWER  0
     9       AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH
             REPORTING PERSON                                964,200
    10       CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES    
             CERTAIN SHARES*              N/A
    11       PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)    5.82%

    12       TYPE OF REPORTING PERSON*
             IA:PN





Item 1.

     (a)      See Front Cover Page
     (b)      337 Encinal Street
              P.O. Box 1802
              Santa Cruz, CA  95061

Item 2.

     (a)      Lord Abbett & Co.
     (b)      767 Fifth Avenue
              New York, New York 10153

     (c)      New York

     (d)      See Front Cover Page

     (e)      See Front Cover Page

Item 3. If this statement is filed pursuant to Rule 13d-1(b), or 13d-2(b), check
whether the person filing is a:

(e) Investment  Advisor  registered under section 203 of the Investment  Company
Act of 1940

Item 4.       Ownership

     (a)      See No. 9
     (b)      See No. 11

     (c)
              (i)    See No. 5
              (ii)   See No. 6
              (iii)  See No. 7
              (iv)   See No. 8

Item 5.       Owner of Five Percent or Less of a Class

              N/A

Item 6.       Ownership of More than Five Percent on Behalf of Another Person

              N/A

Item 7.  Identification  and Classification of the Subsidiary Which Acquired the
Security Being Reported on By the Parent Holding Company

              N/A

Item 8.       Identification and Classification of Members of the Group

              N/A


Item 9.       Notice of Dissolution of Group

              N/A

Item 10.      Certification

By signing below I certify  that,  to the best of my knowledge  and belief,  the
securities  referred to above were  acquired in the ordinary  course of business
and were not  acquired for the purpose of and do not have the effect of changing
or  influencing  the  control  of the  issuer  of such  securities  and were not
acquired in connection with or as a participant in any  transaction  having such
purpose or effect.

                                                     SIGNATURE

After  reasonable  inquiry and to the best of my knowledge and belief, I certify
that the information set forth
in this statement is true, complete and correct.

                                                              February 13, 1998
                                                             
                                                              Date

                                                             /s/ Thomas F. Konop
                                                              Signature         

                                                       Assistant General Counsel
                                                              
                                                              Name/Title