Ampeg B-18N Portaflex Amp VINTAGE 60s!! Start Price USD 1,200.00 Current Price USD 1,200.00 Time Left - Bid Count 2 Buy It Now Price - Reserve Price - Start Time Sunday, November 30, 2008 End Time Sunday, December 07, 2008 Location Memphis, Tennessee See more about 'Ampeg B-18N Portaflex Amp VINTAGE 60s!!' Description  AMPEGB-18N Portaflex Bass AmplifierVintage! 1963-1967In late 1963, Ampeg seized an opportunity to capitalize on the popularity of the B-15N by introducing a larger, more powerful portaflex bass amp - the B-18N. As its name implies, the B-18N had an 18 inch speaker and shared the B-15N's preamp circuit. At 60 watts, the B-18N had twice the power of the B-15N. Though it never attained the popularity of the B-15N, it did last until the end of 1967. It also had a brilliant design feature that was used on all portaflexes through the 1960s. The speaker was connected to the amp via a cable hardwired to the chassis. Instead of using a ¼ inch phone jack as most manufacturers did, Ampeg used a 4-pin XLR plug. The multi-pin connection employed the use of four pins and the speaker cable used four conductors. Two conductors carried the "hot and cold" leads for the speaker signal. The other two were an extension "loop" of the standby circuit. By bridging two of the pins in the speaker cabinet, the connector acted as a second standby switch. When unplugged, the circuit was open and the amp remained in the Standby mode. If a player forgot to connect the speaker jack to the cabinet, the amp could not be switched out of standby. Therefore, this feature was a failsafe mechanism which was used to ensure that a player wouldn't send the power tubes into runaway mode, resulting in a fried output transformer or worse. Power Amp: Tube; 2 x 7027A, 60 watts RMS @ 8 ohms Preamp: Tube; 2 x 6SL7, 1 x 7199 Rectifier: Tube; 1 x 5AR4 Speakers: 1 x 18" Cleveland (ceramic magnet) Channels: 2; 2 inputs for Channel 1 (Guitar, Bass), 1 input for Channel 2 (Instrument) Effects: None Controls: Bass, treble, volume for each channel Dimensions: 24 H x 24 W x 18 D inches Weight: 83 lbs.The jack on this amplifier has been upgraded from a 4-pin XLR to a quarter-inch connection. This was a common upgrade to these amps, as 4-pin XLR connections are very rarely ever seen.PAYMENT OPTIONS: I will work with you on your payment. Paypal, Cashiers Check/Money Order, and Credit Card are preferred. But Like I said, I will work with you on this one.  If you have any more questions please call us at 901-937-8484. Ask for CJ or Chuck. Thanks.         SHIPPING INFO: Buyer pays shipping. I will work with you. If you live in a 90mi. radius of our store in Memphis, TN we will ship it for free. If you live outside that area we ship via FedEx Ground. FINANCING AVAILABLE: We offer 90 days same as cash with approved credit through our store.  PLEASE EMAIL ME WITH ANY QUESTIONS YOU HAVE ABOUT THIS PRODUCT AT: MEMPHISMUSICGUITAR@HOTMAIL.COM THE NAME OF OUR STORE IS MEMPHIS MUSIC. CHECK OUT OUR EBAY STORE. PAYMENT ACCEPTED: PAYPAL, CASH, CHECK (HELD UNTIL CLEAR) CASHIERS CHECK, MONEY ORDER, OR CREDIT CARD BY PHONE Shipping & Handling : CONTINENTAL US ONLY!  Please don't bid on this guitar if you live outside the continental US. Sales tax of 9.25% will be added to the top bid if you are a tennessee resident... Sorry Good Luck!!! Place a Bid!