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Polytechnic Student Account Page 1 POLYTECHNICAL STUDENT ACOUNT, MYMENSINGH SL NO ACCOUNT NO ACCOUNT NAME ROLL NO 1 159939 2 934339 3 372509 4 368968 5 159284 6 924895 7 232768 8 232896 9 159232 10 932476 11 369004 12 932684 13 373340 14 932151 15 369367 16 932153 17 982715 18 932470 19 932499 20 100689 21 867666 22 369383 23 368992 24 932652 25 932467 26 932549 27 932291 28 369193 29 369319 30 332634 31 932491 32 159070 33 368943 34 343273 35 369021 36 368980 37 369008 38 368347 1561050234038 MD. ARIF HOSSEN 1561050234059 MD. ARIFUL ISLAM EMON 1561050234064 RAFIQUL ISLAM 1561050234073 SHAKHAWAT HOSEN SHAKIL 1561050234085 MOUJ UDDIN 1561050234090 MD. ATIKUL ISLAM 1561050234108 RAKIB HASAN 1561050234113 MD. SAYEM HOSSAIN 1561050234129 SUBORNA KHATUN 1561050234134 MD. SIDRATUL ISLAM SHIHAB 1561050234147 NAZMUL HASAN 1561050234155 SHOZIB 1561050234160 MEHEDI HASAN IFAT 1561050234176 JANNATUL FERDOUS MIM 1561050234181 UMAR FARUK 1561050234197 MD. MAIDUL ISLAM 1561050234204 MD. SOMRAT MIA 1561050234214 MD. AKRAMUL ISLAM 1561050234230 MD. RASEL HOSEN 1561050234251 SHAHRIA ALAM 1561050234267 NILOY CHANDRA DEBNATH 1561050234272 DURJOY CHANDRA GHOSE 1561050234288 AMIRUL HAQUE 1561050234293 SHAKIL AHMED 1561050234300 DIDAR AHMED 1561050234316 MUHAMMAD SOMRAT TALUKDER 1561050234321 MD. MUKADDAS AHMED 1561050234337 MD. RAKIBUL HASAN 1561050234342 SHADMAN RAFI 1561050234358 MOST. SHURAIYA SHARMIN 1561050234363 MD. NAEEM HOSEN 1561050234379 MD. SABBIR AHMED 1561050234398 ARIFUL ISLAM 1561050234407 MD. SHAMIM 1561050234412 MD. MAHIR UDDIN 1561050234428 SABBIR AHAMMED 1561050234433 RAFIQUL ISLAM 1561050234449 JAKARIA HOSSAIN

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Page 1: ENVIRONMENTAL CHANGES BUZZING REEDScdn3.volusion.com/zwejl.pxlad/v/vspfiles/files/pdf/Harmonium-Guide.pdfeliminate the buzz. If that does not work you may have to open the harmonium

ENVIRONMENTAL CHANGES – It is important not to expose your harmonium to extreme temperatures or moisture. The wooden parts of the harmonium can react to changes in moisture and temperature and may cause the reeds to buzz, or parts to stick, jam, or worse.

BUZZING REEDS – Sometimes simply playing a reed over and over will eliminate the buzz. If that does not work you may have to open the harmonium to view the reeds. On the front of the Harmonium, under the keyboard, is a hinge. The entire top of the harmonium will lift up to reveal the reeds and air chambers. Again each harmonium is different so do not force the top up, look for hinges, screws or levers that may need to be opened before the top can be lifted or slid off.

With the harmonium opened, find the offending reed and loosen the screws on the reed. You do not need to remove the reed, just loosen it. Reeds stick to the wood and if the wood expanded or contracted, the reed may be experiencing torque. Loosen and lift the reed slightly, then retighten it. Also look for any small bit of debris. Any small bit of wood dust in a reed will cause it to buzz. Clean them carefully, reeds can be easily bent and then they may not work.

FALLEN OR STICKING KEYS - Under the Cover you will see the back of the keys, which are held in place by a wire arm. The wire acts as a spring to push the key up after you depress it. During transport these wires can slide off. If your key has fallen and can’t get up, move the spring back into place.

If the wire spring is in place and your key sticks or stays down, the wood may have expanded. If this happens slide a piece of sand paper back and forth between the keys, just enough for the keys to operate freely.

STUCK PULL KNOBS - Do not force a stuck knob. Open the top of the harmonium to look into the air chamber. Each knob is attached to a block of wood that slides between two wooden rails. If the block swells the knob will stick. There is a graphite powder, available at hardware stores, which acts as a form of dry lubrication. Use it sparingly. If that fails you may need to take the block out from between the rails and then very lightly sand the sides. You do not want the block to wiggle between the rails. The block slides over a hole to close off air flow. If the block is loose in the rails you may have an air leak.

Harmonium

AccessoriesAccessories are available at www.mid-east.com

– Owner’s Guide –

www.mid-east.com © Copyright 2015. Mid-East Mfg. Inc.Harmonium

Page 2: ENVIRONMENTAL CHANGES BUZZING REEDScdn3.volusion.com/zwejl.pxlad/v/vspfiles/files/pdf/Harmonium-Guide.pdfeliminate the buzz. If that does not work you may have to open the harmonium

Harmonium

Harmonium

Parts of the HarmoniumREEDS - The brass reeds are thin tongues mounted in the openings of thick rectangular bases.The reed vibrates when air passes through the opening in the base. Short narrow reeds have a higher pitch than long wide reeds.

BELLOWS – Pumping the pleated paper bellows moves air into the chambers. Usually the bellows can accommodate left or right handed players. If you don’t hear music, stop pumping! NEVER pump unless air flows through the reeds.

PULL KNOBS - The knobs on the front are called Stops and Drones. Stops control the airflow to the reed chambers. Multiple Stops for one chamber provides a more powerful sound. Stops may also control special functions, such as tremolo. Drone knobs control the airflow through fixed reeds that have no keys associated with them. Pulling the Drone knob opens the air flow to a drone reed and provides harmony to the keyboard music.

KEYS- Each key represents a reed. With a Stop pulled, depressing one key activates one reed. Pull two Stops from different chambers and one key can activate two reeds; one reed in each chamber.

MECHANICAL DEVICES – Mechanical devices provide greater flexibility and variations in sound. These devices can include the Mechanical Coupler and the Scale Changer. They are not available on all models.

The COUPLER is an ingenious device that physically connects, or couples, two keys. The result is, playing one key simultaneously engages two reeds that are one octave apart. The coupler may be engaged or disengaged by the user.

The SCALE CHANGER is a tool that repositions the keyboard in relation to the reeds. It adjusts in half step increments. Moving to the left lowers the pitch, moving it to the right will raise it.

Playing the Harmonium Place the harmonium on the floor and sit cross-legged in front of it. Play the keys with your dominant hand while your other hand works the bellows. You can also place the harmonium on a table while you play. Find a comfortable pose. Practice your scales as you would with an organ or piano.

Tuning Harmoniums are meant to accompany vocals. They are not meant to be played in concert with other instruments. Therefore, they are rarely tuned to concert pitch. The reeds will sound good when played together, but not necessarily when played with other instruments. It is important that the sound compliments the vocals, the raga and the temperament one is trying to achieve.

Care and CautionBODY STYLES –If it is not Fixed, it may be a Suitcase with a removable lid, or Traveler with a hinged top. To raise a Suitcase, remove the lid and locate the handles on each side. Each handle has a metal release trigger, hold ABOVE the trigger and lift until the supports pop out. To lower, lift up on the release triggers, until the supports pop in, and then lower the body. For the Traveler, open the hinged top and fold it to the back, lift the body until the supports engage, then latch the top to the sides for a snug seal. To store the Traveler, unlatch the top, holding the sides, lift enough to remove the tension on the supports and push them in while lowering the body, close and latch the top.

ALWAYS make sure all the Pull Knobs are pushed in BEFORE closing your harmonium. Go slowly, take some time to get to know your harmonium, and NEVER force anything.

BELLOWS & AIR CHAMBERS - The harmonium has a number of delicate parts that are made of cloth, leather and wood. These maintain the air within the chambers and the bellows. NEVER pump the bellows with all the Pull Knobs pushed in; this will cause greater pressure in the chambers than the delicate parts can handle and may lead to leaks. If you don’t hear the music, stop pumping!

Be very careful around curious children as there are a number of vents that are perfect for small fingers, pencils, etc. Any holes in the bellows, or cloth vent covers will cause air leaks in the chambers and your harmonium will need repair.

Bellows

Handle

KeysCover

BodyStops

Drones